Merge 062464175e into f230f2ce0e

Create CODE_OF_CONDUCT.md

.dockerignore

@@ -0,0 +1,8 @@
+.git
+.github
+target
+.kilocode
+cache
+tlsfront
+*.tar
+*.tar.gz

CODE_OF_CONDUCT.md

@@ -0,0 +1,163 @@
+# TELEMT Code of Conduct
+
+## 1. Purpose
+
+Telemt exists to solve technical problems.
+
+It is not a platform for ideology, politics, or personal agendas.
+
+All interaction here is defined by systems, constraints, and outcomes.
+
+Technology has consequences.
+Responsibility is inherent.
+
+> **Zweck bestimmt die Form.**
+> Purpose defines form.
+
+---
+
+## 2. Principles
+
+* **Technical over emotional**
+  Arguments are grounded in data, logs, reproducible cases, or clear reasoning.
+
+* **Clarity over noise**
+  Communication is structured, concise, and relevant.
+
+* **Independence**
+  Telemt does not represent any state, ideology, or organization.
+
+* **Open participation**
+  Access is open. Standards are not.
+
+* **Responsibility over capability**
+  Capability does not justify careless use.
+
+* **Cooperation over friction**
+  Progress is achieved through coordination and mutual support.
+
+> **Fakten sind nicht verhandelbar.**
+> Facts are not negotiable.
+
+---
+
+## 3. Expected Behavior
+
+Participants are expected to:
+
+* Communicate directly and respectfully
+* Support claims with evidence
+* Stay within technical scope
+* Accept critique and provide it constructively
+* Reduce noise, duplication, and ambiguity
+* Help others reach correct and reproducible outcomes
+* Act in a way that improves the system as a whole
+
+> **Wer behauptet, belegt.**
+> Whoever claims, proves.
+
+---
+
+## 4. Unacceptable Behavior
+
+The following is not allowed:
+
+* Personal attacks, insults, harassment, intimidation
+* Political discourse, propaganda, ideological conflict
+* Off-topic or disruptive discussion
+* Spam, flooding, or repeated low-quality input
+* Misinformation presented as fact
+* Attempts to degrade or destabilize Telemt
+* Use of Telemt or its space to enable harm
+
+> **Störung ist kein Beitrag.**
+> Disruption is not contribution.
+
+---
+
+## 5. Security and Misuse
+
+Telemt is intended for lawful and responsible use.
+
+* Do not use it to plan, coordinate, or execute harm
+* Do not publish vulnerabilities without responsible disclosure
+* Report security issues privately where possible
+
+Security is both technical and behavioral.
+
+> **Verantwortung endet nicht am Code.**
+> Responsibility does not end at the code.
+
+---
+
+## 6. Scope
+
+This Code of Conduct applies to all official spaces:
+
+* Source repositories (issues, pull requests, discussions)
+* Documentation
+* Communication channels associated with Telemt
+
+---
+
+## 7. Enforcement
+
+Maintainers may act to preserve the integrity of Telemt:
+
+* Remove content
+* Lock discussions
+* Reject contributions
+* Restrict or ban participants
+
+Actions are taken to maintain function, continuity, and signal quality.
+
+> **Ordnung ist Voraussetzung der Funktion.**
+> Order is the precondition of function.
+
+---
+
+## 8. Maintainer Authority
+
+Maintainers have final authority in interpretation and enforcement.
+
+Authority exists to ensure continuity, consistency, and technical direction.
+
+---
+
+## 9. Final
+
+Telemt is built on discipline, structure, and shared intent.
+
+Signal over noise.
+Facts over opinion.
+Systems over rhetoric.
+
+Work here is collective.
+Outcomes are shared.
+Responsibility is distributed.
+
+> **Ordnung ist Voraussetzung der Freiheit.**
+
+If you contribute — contribute with precision.
+If you speak — speak with substance.
+If you engage — engage constructively.
+
+---
+
+## 10. After All
+
+Systems outlive intentions.
+
+What is built will be used.
+What is released will propagate.
+What is maintained will define the future state.
+
+There is no neutral infrastructure.
+
+> **Jedes System trägt Verantwortung.**
+> Every system carries responsibility.
+
+Stability requires discipline.
+Freedom requires structure.
+
+In the end, the system reflects its contributors.

Cargo.lock

@@ -2,6 +2,16 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "aead"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d122413f284cf2d62fb1b7db97e02edb8cda96d769b16e443a4f6195e35662b0"
+dependencies = [
+ "crypto-common",
+ "generic-array",
+]
+
 [[package]]
 name = "aes"
 version = "0.8.4"
@@ -13,6 +23,20 @@ dependencies = [
  "cpufeatures",
 ]
 
+[[package]]
+name = "aes-gcm"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "831010a0f742e1209b3bcea8fab6a8e149051ba6099432c8cb2cc117dec3ead1"
+dependencies = [
+ "aead",
+ "aes",
+ "cipher",
+ "ctr",
+ "ghash",
+ "subtle",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.4"
@@ -55,6 +79,27 @@ version = "1.0.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f0e0fee31ef5ed1ba1316088939cea399010ed7731dba877ed44aeb407a75ea"
 
+[[package]]
+name = "arc-swap"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9f3647c145568cec02c42054e07bdf9a5a698e15b466fb2341bfc393cd24aa5"
+dependencies = [
+ "rustversion",
+]
+
+[[package]]
+name = "arrayref"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76a2e8124351fda1ef8aaaa3bbd7ebbcb486bbcd4225aca0aa0d84bb2db8fecb"
+
+[[package]]
+name = "arrayvec"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
+
 [[package]]
 name = "asn1-rs"
 version = "0.5.2"
@@ -94,6 +139,17 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "async-trait"
+version = "0.1.89"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9035ad2d096bed7955a320ee7e2230574d28fd3c3a0f186cbea1ff3c7eed5dbb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
 [[package]]
 name = "atomic-waker"
 version = "1.1.2"
@@ -112,6 +168,12 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
+[[package]]
+name = "base64ct"
+version = "1.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2af50177e190e07a26ab74f8b1efbfe2ef87da2116221318cb1c2e82baf7de06"
+
 [[package]]
 name = "bit-set"
 version = "0.8.0"
@@ -139,6 +201,20 @@ version = "2.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
 
+[[package]]
+name = "blake3"
+version = "1.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2468ef7d57b3fb7e16b576e8377cdbde2320c60e1491e961d11da40fc4f02a2d"
+dependencies = [
+ "arrayref",
+ "arrayvec",
+ "cc",
+ "cfg-if",
+ "constant_time_eq",
+ "cpufeatures",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.10.4"
@@ -163,6 +239,12 @@ version = "3.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dd9dc738b7a8311c7ade152424974d8115f2cdad61e8dab8dac9f2362298510"
 
+[[package]]
+name = "byte_string"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11aade7a05aa8c3a351cedc44c3fc45806430543382fcc4743a9b757a2a0b4ed"
+
 [[package]]
 name = "bytes"
 version = "1.11.1"
@@ -212,6 +294,30 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
 
+[[package]]
+name = "chacha20"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3613f74bd2eac03dad61bd53dbe620703d4371614fe0bc3b9f04dd36fe4e818"
+dependencies = [
+ "cfg-if",
+ "cipher",
+ "cpufeatures",
+]
+
+[[package]]
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+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10cd79432192d1c0f4e1a0fef9527696cc039165d729fb41b3f4f4f354c2dc35"
+dependencies = [
+ "aead",
+ "chacha20",
+ "cipher",
+ "poly1305",
+ "zeroize",
+]
+
 [[package]]
 name = "chrono"
 version = "0.4.43"
@@ -261,6 +367,7 @@ checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
 dependencies = [
  "crypto-common",
  "inout",
+ "zeroize",
 ]
 
 [[package]]
@@ -288,6 +395,18 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a822ea5bc7590f9d40f1ba12c0dc3c2760f3482c6984db1573ad11031420831"
 
+[[package]]
+name = "const-oid"
+version = "0.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
+
+[[package]]
+name = "constant_time_eq"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d52eff69cd5e647efe296129160853a42795992097e8af39800e1060caeea9b"
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -357,6 +476,12 @@ dependencies = [
  "itertools",
 ]
 
+[[package]]
+name = "critical-section"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
+
 [[package]]
 name = "crossbeam-channel"
 version = "0.5.15"
@@ -413,6 +538,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
 dependencies = [
  "generic-array",
+ "rand_core 0.6.4",
  "typenum",
 ]
 
@@ -444,6 +570,16 @@ version = "2.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d7a1e2f27636f116493b8b860f5546edb47c8d8f8ea73e1d2a20be88e28d1fea"
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7c1832837b905bbfb5101e07cc24c8deddf52f93225eee6ead5f4d63d53ddcb"
+dependencies = [
+ "const-oid",
+ "zeroize",
+]
+
 [[package]]
 name = "der-parser"
 version = "8.2.0"
@@ -489,12 +625,54 @@ dependencies = [
  "syn 2.0.114",
 ]
 
+[[package]]
+name = "dynosaur"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a12303417f378f29ba12cb12fc78a9df0d8e16ccb1ad94abf04d48d96bdda532"
+dependencies = [
+ "dynosaur_derive",
+]
+
+[[package]]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
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+dependencies = [
+ "pkcs8",
+ "signature",
+]
+
 [[package]]
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+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
 [[package]]
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@@ -709,6 +887,16 @@ dependencies = [
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 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0d8a4362ccb29cb0b265253fb0a2728f592895ee6854fd9bc13f2ffda266ff1"
+dependencies = [
+ "opaque-debug",
+ "polyval",
+]
+
 [[package]]
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@@ -783,6 +971,61 @@ version = "0.4.3"
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+dependencies = [
+ "async-trait",
+ "cfg-if",
+ "data-encoding",
+ "enum-as-inner",
+ "futures-channel",
+ "futures-io",
+ "futures-util",
+ "idna",
+ "ipnet",
+ "once_cell",
+ "rand",
+ "ring",
+ "thiserror 2.0.18",
+ "tinyvec",
+ "tokio",
+ "tracing",
+ "url",
+]
+
+[[package]]
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+checksum = "dc62a9a99b0bfb44d2ab95a7208ac952d31060efc16241c87eaf36406fecf87a"
+dependencies = [
+ "cfg-if",
+ "futures-util",
+ "hickory-proto",
+ "ipconfig",
+ "moka",
+ "once_cell",
+ "parking_lot",
+ "rand",
+ "resolv-conf",
+ "smallvec",
+ "thiserror 2.0.18",
+ "tokio",
+ "tracing",
+]
+
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+dependencies = [
+ "hmac",
+]
+
 [[package]]
 name = "hmac"
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@@ -1055,6 +1298,17 @@ dependencies = [
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 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd5b3eaf1a28b758ac0faa5a4254e8ab2705605496f1b1f3fbbc3988ad73d199"
+dependencies = [
+ "bitflags 2.10.0",
+ "inotify-sys",
+ "libc",
+]
+
 [[package]]
 name = "inotify-sys"
 version = "0.1.5"
@@ -1074,6 +1328,18 @@ dependencies = [
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 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
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+ "widestring",
+ "windows-sys 0.48.0",
+ "winreg",
+]
+
 [[package]]
 name = "ipnet"
 version = "2.11.0"
@@ -1226,6 +1492,12 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"
 
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+checksum = "9106e1d747ffd48e6be5bb2d97fa706ed25b144fbee4d5c02eae110cd8d6badd"
+
 [[package]]
 name = "matchers"
 version = "0.2.0"
@@ -1285,10 +1557,28 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a69bcab0ad47271a0234d9422b131806bf3968021e5dc9328caf2d4cd58557fc"
 dependencies = [
  "libc",
+ "log",
  "wasi",
  "windows-sys 0.61.2",
 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85f8024e1c8e71c778968af91d43700ce1d11b219d127d79fb2934153b82b42b"
+dependencies = [
+ "crossbeam-channel",
+ "crossbeam-epoch",
+ "crossbeam-utils",
+ "equivalent",
+ "parking_lot",
+ "portable-atomic",
+ "smallvec",
+ "tagptr",
+ "uuid",
+]
+
 [[package]]
 name = "nix"
 version = "0.28.0"
@@ -1322,7 +1612,7 @@ dependencies = [
  "crossbeam-channel",
  "filetime",
  "fsevent-sys",
- "inotify",
+ "inotify 0.9.6",
  "kqueue",
  "libc",
  "log",
@@ -1331,6 +1621,33 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
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+version = "8.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d3d07927151ff8575b7087f245456e549fea62edf0ec4e565a5ee50c8402bc3"
+dependencies = [
+ "bitflags 2.10.0",
+ "fsevent-sys",
+ "inotify 0.11.1",
+ "kqueue",
+ "libc",
+ "log",
+ "mio 1.1.1",
+ "notify-types",
+ "walkdir",
+ "windows-sys 0.60.2",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42b8cfee0e339a0337359f3c88165702ac6e600dc01c0cc9579a92d62b08477a"
+dependencies = [
+ "bitflags 2.10.0",
+]
+
 [[package]]
 name = "nu-ansi-term"
 version = "0.50.3"
@@ -1388,6 +1705,10 @@ name = "once_cell"
 version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+dependencies = [
+ "critical-section",
+ "portable-atomic",
+]
 
 [[package]]
 name = "oorandom"
@@ -1395,6 +1716,12 @@ version = "11.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6790f58c7ff633d8771f42965289203411a5e5c68388703c06e14f24770b41e"
 
+[[package]]
+name = "opaque-debug"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c08d65885ee38876c4f86fa503fb49d7b507c2b62552df7c70b2fce627e06381"
+
 [[package]]
 name = "parking_lot"
 version = "0.12.5"
@@ -1424,6 +1751,26 @@ version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
+[[package]]
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+version = "1.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1749c7ed4bcaf4c3d0a3efc28538844fb29bcdd7d2b67b2be7e20ba861ff517"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b20ed30f105399776b9c883e68e536ef602a16ae6f596d2c473591d6ad64c6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.16"
@@ -1436,6 +1783,16 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
+[[package]]
+name = "pkcs8"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f950b2377845cebe5cf8b5165cb3cc1a5e0fa5cfa3e1f7f55707d8fd82e0a7b7"
+dependencies = [
+ "der",
+ "spki",
+]
+
 [[package]]
 name = "plotters"
 version = "0.3.7"
@@ -1464,6 +1821,35 @@ dependencies = [
  "plotters-backend",
 ]
 
+[[package]]
+name = "poly1305"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8159bd90725d2df49889a078b54f4f79e87f1f8a8444194cdca81d38f5393abf"
+dependencies = [
+ "cpufeatures",
+ "opaque-debug",
+ "universal-hash",
+]
+
+[[package]]
+name = "polyval"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d1fe60d06143b2430aa532c94cfe9e29783047f06c0d7fd359a9a51b729fa25"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "opaque-debug",
+ "universal-hash",
+]
+
+[[package]]
+name = "portable-atomic"
+version = "1.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c33a9471896f1c69cecef8d20cbe2f7accd12527ce60845ff44c153bb2a21b49"
+
 [[package]]
 name = "potential_utf"
 version = "0.1.4"
@@ -1609,7 +1995,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
 dependencies = [
  "rand_chacha",
- "rand_core",
+ "rand_core 0.9.5",
 ]
 
 [[package]]
@@ -1619,7 +2005,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.9.5",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom 0.2.17",
 ]
 
 [[package]]
@@ -1637,7 +2032,7 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "513962919efc330f829edb2535844d1b912b0fbe2ca165d613e4e8788bb05a5a"
 dependencies = [
- "rand_core",
+ "rand_core 0.9.5",
 ]
 
 [[package]]
@@ -1745,6 +2140,12 @@ dependencies = [
  "webpki-roots 1.0.6",
 ]
 
+[[package]]
+name = "resolv-conf"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e061d1b48cb8d38042de4ae0a7a6401009d6143dc80d2e2d6f31f0bdd6470c7"
+
 [[package]]
 name = "ring"
 version = "0.17.14"
@@ -1759,6 +2160,19 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "ring-compat"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccce7bae150b815f0811db41b8312fcb74bffa4cab9cee5429ee00f356dd5bd4"
+dependencies = [
+ "aead",
+ "ed25519",
+ "generic-array",
+ "pkcs8",
+ "ring",
+]
+
 [[package]]
 name = "rustc-hash"
 version = "2.1.1"
@@ -1870,12 +2284,33 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
+[[package]]
+name = "sealed"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22f968c5ea23d555e670b449c1c5e7b2fc399fdaec1d304a17cd48e288abc107"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
 [[package]]
 name = "semver"
 version = "1.0.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
 
+[[package]]
+name = "sendfd"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b183bfd5b1bc64ab0c1ef3ee06b008a9ef1b68a7d3a99ba566fbfe7a7c6d745b"
+dependencies = [
+ "libc",
+ "tokio",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.228"
@@ -1962,6 +2397,64 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "shadowsocks"
+version = "1.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "482831bf9d55acf3c98e211b6c852c3dfdf1d1b0d23fdf1d887c5a4b2acad4e4"
+dependencies = [
+ "aes",
+ "arc-swap",
+ "base64",
+ "blake3",
+ "byte_string",
+ "bytes",
+ "cfg-if",
+ "dynosaur",
+ "futures",
+ "hickory-resolver",
+ "libc",
+ "log",
+ "lru_time_cache",
+ "notify 8.2.0",
+ "percent-encoding",
+ "pin-project",
+ "rand",
+ "sealed",
+ "sendfd",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "shadowsocks-crypto",
+ "socket2 0.6.2",
+ "spin",
+ "thiserror 2.0.18",
+ "tokio",
+ "tokio-tfo",
+ "trait-variant",
+ "url",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "shadowsocks-crypto"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d038a3d17586f1c1ab3c1c3b9e4d5ef8fba98fb3890ad740c8487038b2e2ca5"
+dependencies = [
+ "aes",
+ "aes-gcm",
+ "blake3",
+ "bytes",
+ "cfg-if",
+ "chacha20poly1305",
+ "hkdf",
+ "md-5",
+ "rand",
+ "ring-compat",
+ "sha1",
+]
+
 [[package]]
 name = "sharded-slab"
 version = "0.1.7"
@@ -1987,6 +2480,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "signature"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
+
 [[package]]
 name = "slab"
 version = "0.4.12"
@@ -2019,6 +2518,25 @@ dependencies = [
  "windows-sys 0.60.2",
 ]
 
+[[package]]
+name = "spin"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5fe4ccb98d9c292d56fec89a5e07da7fc4cf0dc11e156b41793132775d3e591"
+dependencies = [
+ "lock_api",
+]
+
+[[package]]
+name = "spki"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d91ed6c858b01f942cd56b37a94b3e0a1798290327d1236e4d9cf4eaca44d29d"
+dependencies = [
+ "base64ct",
+ "der",
+]
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.1"
@@ -2085,9 +2603,15 @@ dependencies = [
  "syn 2.0.114",
 ]
 
+[[package]]
+name = "tagptr"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b2093cf4c8eb1e67749a6762251bc9cd836b6fc171623bd0a9d324d37af2417"
+
 [[package]]
 name = "telemt"
-version = "3.3.19"
+version = "3.3.20"
 dependencies = [
  "aes",
  "anyhow",
@@ -2113,7 +2637,7 @@ dependencies = [
  "lru",
  "md-5",
  "nix",
- "notify",
+ "notify 6.1.1",
  "num-bigint",
  "num-traits",
  "parking_lot",
@@ -2126,6 +2650,7 @@ dependencies = [
  "serde_json",
  "sha1",
  "sha2",
+ "shadowsocks",
  "socket2 0.5.10",
  "thiserror 2.0.18",
  "tokio",
@@ -2330,6 +2855,23 @@ dependencies = [
  "tokio-stream",
 ]
 
+[[package]]
+name = "tokio-tfo"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6ad2c3b3bb958ad992354a7ebc468fc0f7cdc9af4997bf4d3fd3cb28bad36dc"
+dependencies = [
+ "cfg-if",
+ "futures",
+ "libc",
+ "log",
+ "once_cell",
+ "pin-project",
+ "socket2 0.6.2",
+ "tokio",
+ "windows-sys 0.60.2",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.7.18"
@@ -2494,6 +3036,17 @@ dependencies = [
  "tracing-log",
 ]
 
+[[package]]
+name = "trait-variant"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70977707304198400eb4835a78f6a9f928bf41bba420deb8fdb175cd965d77a7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
 [[package]]
 name = "try-lock"
 version = "0.2.5"
@@ -2524,6 +3077,16 @@ version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
 
+[[package]]
+name = "universal-hash"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc1de2c688dc15305988b563c3854064043356019f97a4b46276fe734c4f07ea"
+dependencies = [
+ "crypto-common",
+ "subtle",
+]
+
 [[package]]
 name = "untrusted"
 version = "0.9.0"
@@ -2548,6 +3111,17 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "uuid"
+version = "1.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a68d3c8f01c0cfa54a75291d83601161799e4a89a39e0929f4b0354d88757a37"
+dependencies = [
+ "getrandom 0.4.1",
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "valuable"
 version = "0.1.1"
@@ -2743,6 +3317,12 @@ dependencies = [
  "rustls-pki-types",
 ]
 
+[[package]]
+name = "widestring"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72069c3113ab32ab29e5584db3c6ec55d416895e60715417b5b883a357c3e471"
+
 [[package]]
 name = "winapi-util"
 version = "0.1.11"
@@ -3042,6 +3622,16 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "winreg"
+version = "0.50.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "524e57b2c537c0f9b1e69f1965311ec12182b4122e45035b1508cd24d2adadb1"
+dependencies = [
+ "cfg-if",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "wit-bindgen"
 version = "0.51.0"

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "telemt"
-version = "3.3.21"
+version = "3.3.23"
 edition = "2024"
 
 [dependencies]
@@ -26,6 +26,7 @@ zeroize = { version = "1.8", features = ["derive"] }
 # Network
 socket2 = { version = "0.5", features = ["all"] }
 nix = { version = "0.28", default-features = false, features = ["net"] }
+shadowsocks = { version = "1.24", features = ["aead-cipher-2022"] }
 
 # Serialization
 serde = { version = "1.0", features = ["derive"] }

docs/API.md

@@ -497,13 +497,14 @@ Note: the request contract is defined, but the corresponding route currently ret
 | `direct_total` | `usize` | Direct-route upstream entries. |
 | `socks4_total` | `usize` | SOCKS4 upstream entries. |
 | `socks5_total` | `usize` | SOCKS5 upstream entries. |
+| `shadowsocks_total` | `usize` | Shadowsocks upstream entries. |
 
 #### `RuntimeUpstreamQualityUpstreamData`
 | Field | Type | Description |
 | --- | --- | --- |
 | `upstream_id` | `usize` | Runtime upstream index. |
-| `route_kind` | `string` | `direct`, `socks4`, `socks5`. |
-| `address` | `string` | Upstream address (`direct` literal for direct route kind). |
+| `route_kind` | `string` | `direct`, `socks4`, `socks5`, `shadowsocks`. |
+| `address` | `string` | Upstream address (`direct` literal for direct route kind, `host:port` only for proxied upstreams). |
 | `weight` | `u16` | Selection weight. |
 | `scopes` | `string` | Configured scope selector. |
 | `healthy` | `bool` | Current health flag. |
@@ -757,13 +758,14 @@ Note: the request contract is defined, but the corresponding route currently ret
 | `direct_total` | `usize` | Number of direct upstream entries. |
 | `socks4_total` | `usize` | Number of SOCKS4 upstream entries. |
 | `socks5_total` | `usize` | Number of SOCKS5 upstream entries. |
+| `shadowsocks_total` | `usize` | Number of Shadowsocks upstream entries. |
 
 #### `UpstreamStatus`
 | Field | Type | Description |
 | --- | --- | --- |
 | `upstream_id` | `usize` | Runtime upstream index. |
-| `route_kind` | `string` | Upstream route kind: `direct`, `socks4`, `socks5`. |
-| `address` | `string` | Upstream address (`direct` for direct route kind). Authentication fields are intentionally omitted. |
+| `route_kind` | `string` | Upstream route kind: `direct`, `socks4`, `socks5`, `shadowsocks`. |
+| `address` | `string` | Upstream address (`direct` for direct route kind, `host:port` for Shadowsocks). Authentication fields are intentionally omitted. |
 | `weight` | `u16` | Selection weight. |
 | `scopes` | `string` | Configured scope selector string. |
 | `healthy` | `bool` | Current health flag. |

docs/CONFIG_PARAMS.en.md

@@ -8,282 +8,287 @@ This document lists all configuration keys accepted by `config.toml`.
 
 ## Top-level keys
 
-| Parameter | Type | Description |
-|---|---|---|
-| include | `String` (special directive) | Includes another TOML file with `include = "relative/or/absolute/path.toml"`; includes are processed recursively before parsing. |
-| show_link | `"*" \| String[]` | Legacy top-level link visibility selector (`"*"` for all users or explicit usernames list). |
-| dc_overrides | `Map<String, String[]>` | Overrides DC endpoints for non-standard DCs; key is DC id string, value is `ip:port` list. |
-| default_dc | `u8` | Default DC index used for unmapped non-standard DCs. |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| include | `String` (special directive) | `null` | — | Includes another TOML file with `include = "relative/or/absolute/path.toml"`; includes are processed recursively before parsing. |
+| show_link | `"*" \| String[]` | `[]` (`ShowLink::None`) | — | Legacy top-level link visibility selector (`"*"` for all users or explicit usernames list). |
+| dc_overrides | `Map<String, String[]>` | `{}` | — | Overrides DC endpoints for non-standard DCs; key is DC id string, value is `ip:port` list. |
+| default_dc | `u8 \| null` | `null` (effective fallback: `2` in ME routing) | — | Default DC index used for unmapped non-standard DCs. |
 
 ## [general]
 
-| Parameter | Type | Description |
-|---|---|---|
-| data_path | `String` | Optional runtime data directory path. |
-| prefer_ipv6 | `bool` | Prefer IPv6 where applicable in runtime logic. |
-| fast_mode | `bool` | Enables fast-path optimizations for traffic processing. |
-| use_middle_proxy | `bool` | Enables Middle Proxy mode. |
-| proxy_secret_path | `String` | Path to proxy secret binary; can be auto-downloaded if absent. |
-| proxy_config_v4_cache_path | `String` | Optional cache path for raw `getProxyConfig` (IPv4) snapshot. |
-| proxy_config_v6_cache_path | `String` | Optional cache path for raw `getProxyConfigV6` (IPv6) snapshot. |
-| ad_tag | `String` | Global fallback ad tag (32 hex characters). |
-| middle_proxy_nat_ip | `IpAddr` | Explicit public IP override for NAT environments. |
-| middle_proxy_nat_probe | `bool` | Enables NAT probing for Middle Proxy KDF/public address discovery. |
-| middle_proxy_nat_stun | `String` | Deprecated legacy single STUN server for NAT probing. |
-| middle_proxy_nat_stun_servers | `String[]` | Deprecated legacy STUN list for NAT probing fallback. |
-| stun_nat_probe_concurrency | `usize` | Maximum concurrent STUN probes during NAT detection. |
-| middle_proxy_pool_size | `usize` | Target size of active Middle Proxy writer pool. |
-| middle_proxy_warm_standby | `usize` | Number of warm standby Middle-End connections. |
-| me_init_retry_attempts | `u32` | Startup retries for ME pool initialization (`0` means unlimited). |
-| me2dc_fallback | `bool` | Allows fallback from ME mode to direct DC when ME startup fails. |
-| me_keepalive_enabled | `bool` | Enables ME keepalive padding frames. |
-| me_keepalive_interval_secs | `u64` | Keepalive interval in seconds. |
-| me_keepalive_jitter_secs | `u64` | Keepalive jitter in seconds. |
-| me_keepalive_payload_random | `bool` | Randomizes keepalive payload bytes instead of zero payload. |
-| rpc_proxy_req_every | `u64` | Interval for service `RPC_PROXY_REQ` activity signals (`0` disables). |
-| me_writer_cmd_channel_capacity | `usize` | Capacity of per-writer command channel. |
-| me_route_channel_capacity | `usize` | Capacity of per-connection ME response route channel. |
-| me_c2me_channel_capacity | `usize` | Capacity of per-client command queue (client reader -> ME sender). |
-| me_reader_route_data_wait_ms | `u64` | Bounded wait for routing ME DATA to per-connection queue (`0` = no wait). |
-| me_d2c_flush_batch_max_frames | `usize` | Max ME->client frames coalesced before flush. |
-| me_d2c_flush_batch_max_bytes | `usize` | Max ME->client payload bytes coalesced before flush. |
-| me_d2c_flush_batch_max_delay_us | `u64` | Max microsecond wait for coalescing more ME->client frames (`0` disables timed coalescing). |
-| me_d2c_ack_flush_immediate | `bool` | Flushes client writer immediately after quick-ack write. |
-| direct_relay_copy_buf_c2s_bytes | `usize` | Copy buffer size for client->DC direction in direct relay. |
-| direct_relay_copy_buf_s2c_bytes | `usize` | Copy buffer size for DC->client direction in direct relay. |
-| crypto_pending_buffer | `usize` | Max pending ciphertext buffer per client writer (bytes). |
-| max_client_frame | `usize` | Maximum allowed client MTProto frame size (bytes). |
-| desync_all_full | `bool` | Emits full crypto-desync forensic logs for every event. |
-| beobachten | `bool` | Enables per-IP forensic observation buckets. |
-| beobachten_minutes | `u64` | Retention window (minutes) for per-IP observation buckets. |
-| beobachten_flush_secs | `u64` | Snapshot flush interval (seconds) for observation output file. |
-| beobachten_file | `String` | Observation snapshot output file path. |
-| hardswap | `bool` | Enables hard-swap generation switching for ME pool updates. |
-| me_warmup_stagger_enabled | `bool` | Enables staggered warmup for extra ME writers. |
-| me_warmup_step_delay_ms | `u64` | Base delay between warmup connections (ms). |
-| me_warmup_step_jitter_ms | `u64` | Jitter for warmup delay (ms). |
-| me_reconnect_max_concurrent_per_dc | `u32` | Max concurrent reconnect attempts per DC. |
-| me_reconnect_backoff_base_ms | `u64` | Base reconnect backoff in ms. |
-| me_reconnect_backoff_cap_ms | `u64` | Cap reconnect backoff in ms. |
-| me_reconnect_fast_retry_count | `u32` | Number of fast retry attempts before backoff. |
-| me_single_endpoint_shadow_writers | `u8` | Additional reserve writers for one-endpoint DC groups. |
-| me_single_endpoint_outage_mode_enabled | `bool` | Enables aggressive outage recovery for one-endpoint DC groups. |
-| me_single_endpoint_outage_disable_quarantine | `bool` | Ignores endpoint quarantine in one-endpoint outage mode. |
-| me_single_endpoint_outage_backoff_min_ms | `u64` | Minimum reconnect backoff in outage mode (ms). |
-| me_single_endpoint_outage_backoff_max_ms | `u64` | Maximum reconnect backoff in outage mode (ms). |
-| me_single_endpoint_shadow_rotate_every_secs | `u64` | Periodic shadow writer rotation interval (`0` disables). |
-| me_floor_mode | `"static" \| "adaptive"` | Writer floor policy mode. |
-| me_adaptive_floor_idle_secs | `u64` | Idle time before adaptive floor may reduce one-endpoint target. |
-| me_adaptive_floor_min_writers_single_endpoint | `u8` | Minimum adaptive writer target for one-endpoint DC groups. |
-| me_adaptive_floor_min_writers_multi_endpoint | `u8` | Minimum adaptive writer target for multi-endpoint DC groups. |
-| me_adaptive_floor_recover_grace_secs | `u64` | Grace period to hold static floor after activity. |
-| me_adaptive_floor_writers_per_core_total | `u16` | Global writer budget per logical CPU core in adaptive mode. |
-| me_adaptive_floor_cpu_cores_override | `u16` | Manual CPU core count override (`0` uses auto-detection). |
-| me_adaptive_floor_max_extra_writers_single_per_core | `u16` | Per-core max extra writers above base floor for one-endpoint DCs. |
-| me_adaptive_floor_max_extra_writers_multi_per_core | `u16` | Per-core max extra writers above base floor for multi-endpoint DCs. |
-| me_adaptive_floor_max_active_writers_per_core | `u16` | Hard cap for active ME writers per logical CPU core. |
-| me_adaptive_floor_max_warm_writers_per_core | `u16` | Hard cap for warm ME writers per logical CPU core. |
-| me_adaptive_floor_max_active_writers_global | `u32` | Hard global cap for active ME writers. |
-| me_adaptive_floor_max_warm_writers_global | `u32` | Hard global cap for warm ME writers. |
-| upstream_connect_retry_attempts | `u32` | Connect attempts for selected upstream before error/fallback. |
-| upstream_connect_retry_backoff_ms | `u64` | Delay between upstream connect attempts (ms). |
-| upstream_connect_budget_ms | `u64` | Total wall-clock budget for one upstream connect request (ms). |
-| upstream_unhealthy_fail_threshold | `u32` | Consecutive failed requests before upstream is marked unhealthy. |
-| upstream_connect_failfast_hard_errors | `bool` | Skips additional retries for hard non-transient connect errors. |
-| stun_iface_mismatch_ignore | `bool` | Ignores STUN/interface mismatch and keeps Middle Proxy mode. |
-| unknown_dc_log_path | `String` | File path for unknown-DC request logging (`null` disables file path). |
-| unknown_dc_file_log_enabled | `bool` | Enables unknown-DC file logging. |
-| log_level | `"debug" \| "verbose" \| "normal" \| "silent"` | Runtime logging verbosity. |
-| disable_colors | `bool` | Disables ANSI colors in logs. |
-| me_socks_kdf_policy | `"strict" \| "compat"` | SOCKS-bound KDF fallback policy for ME handshake. |
-| me_route_backpressure_base_timeout_ms | `u64` | Base backpressure timeout for route-channel send (ms). |
-| me_route_backpressure_high_timeout_ms | `u64` | High backpressure timeout when queue occupancy exceeds watermark (ms). |
-| me_route_backpressure_high_watermark_pct | `u8` | Queue occupancy threshold (%) for high timeout mode. |
-| me_health_interval_ms_unhealthy | `u64` | Health monitor interval while writer coverage is degraded (ms). |
-| me_health_interval_ms_healthy | `u64` | Health monitor interval while writer coverage is healthy (ms). |
-| me_admission_poll_ms | `u64` | Poll interval for conditional-admission checks (ms). |
-| me_warn_rate_limit_ms | `u64` | Cooldown for repetitive ME warning logs (ms). |
-| me_route_no_writer_mode | `"async_recovery_failfast" \| "inline_recovery_legacy" \| "hybrid_async_persistent"` | Route behavior when no writer is immediately available. |
-| me_route_no_writer_wait_ms | `u64` | Max wait in async-recovery failfast mode (ms). |
-| me_route_inline_recovery_attempts | `u32` | Inline recovery attempts in legacy mode. |
-| me_route_inline_recovery_wait_ms | `u64` | Max inline recovery wait in legacy mode (ms). |
-| fast_mode_min_tls_record | `usize` | Minimum TLS record size when fast-mode coalescing is enabled (`0` disables). |
-| update_every | `u64` | Unified interval for config/secret updater tasks. |
-| me_reinit_every_secs | `u64` | Periodic ME pool reinitialization interval (seconds). |
-| me_hardswap_warmup_delay_min_ms | `u64` | Minimum delay between hardswap warmup connects (ms). |
-| me_hardswap_warmup_delay_max_ms | `u64` | Maximum delay between hardswap warmup connects (ms). |
-| me_hardswap_warmup_extra_passes | `u8` | Additional warmup passes per hardswap cycle. |
-| me_hardswap_warmup_pass_backoff_base_ms | `u64` | Base backoff between hardswap warmup passes (ms). |
-| me_config_stable_snapshots | `u8` | Number of identical config snapshots required before apply. |
-| me_config_apply_cooldown_secs | `u64` | Cooldown between applied ME map updates (seconds). |
-| me_snapshot_require_http_2xx | `bool` | Requires 2xx HTTP responses for applying config snapshots. |
-| me_snapshot_reject_empty_map | `bool` | Rejects empty config snapshots. |
-| me_snapshot_min_proxy_for_lines | `u32` | Minimum parsed `proxy_for` rows required to accept snapshot. |
-| proxy_secret_stable_snapshots | `u8` | Number of identical secret snapshots required before runtime rotation. |
-| proxy_secret_rotate_runtime | `bool` | Enables runtime proxy-secret rotation from remote source. |
-| me_secret_atomic_snapshot | `bool` | Keeps selector and secret bytes from the same snapshot atomically. |
-| proxy_secret_len_max | `usize` | Maximum allowed proxy-secret length (bytes). |
-| me_pool_drain_ttl_secs | `u64` | Drain TTL for stale ME writers after endpoint-map changes (seconds). |
-| me_pool_drain_threshold | `u64` | Max draining stale writers before batch force-close (`0` disables threshold cleanup). |
-| me_bind_stale_mode | `"never" \| "ttl" \| "always"` | Policy for new binds on stale draining writers. |
-| me_bind_stale_ttl_secs | `u64` | TTL for stale bind allowance when stale mode is `ttl`. |
-| me_pool_min_fresh_ratio | `f32` | Minimum desired-DC fresh coverage ratio before draining stale writers. |
-| me_reinit_drain_timeout_secs | `u64` | Force-close timeout for stale writers after endpoint-map changes (`0` disables force-close). |
-| proxy_secret_auto_reload_secs | `u64` | Deprecated legacy secret reload interval (fallback when `update_every` is not set). |
-| proxy_config_auto_reload_secs | `u64` | Deprecated legacy config reload interval (fallback when `update_every` is not set). |
-| me_reinit_singleflight | `bool` | Serializes ME reinit cycles across trigger sources. |
-| me_reinit_trigger_channel | `usize` | Trigger queue capacity for reinit scheduler. |
-| me_reinit_coalesce_window_ms | `u64` | Trigger coalescing window before starting reinit (ms). |
-| me_deterministic_writer_sort | `bool` | Enables deterministic candidate sort for writer binding path. |
-| me_writer_pick_mode | `"sorted_rr" \| "p2c"` | Writer selection mode for route bind path. |
-| me_writer_pick_sample_size | `u8` | Number of candidates sampled by picker in `p2c` mode. |
-| ntp_check | `bool` | Enables NTP drift check at startup. |
-| ntp_servers | `String[]` | NTP servers used for drift check. |
-| auto_degradation_enabled | `bool` | Enables automatic degradation from ME to direct DC. |
-| degradation_min_unavailable_dc_groups | `u8` | Minimum unavailable ME DC groups required before degrading. |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| data_path | `String \| null` | `null` | — | Optional runtime data directory path. |
+| prefer_ipv6 | `bool` | `false` | — | Prefer IPv6 where applicable in runtime logic. |
+| fast_mode | `bool` | `true` | — | Enables fast-path optimizations for traffic processing. |
+| use_middle_proxy | `bool` | `true` | none | Enables ME transport mode; if `false`, runtime falls back to direct DC routing. |
+| proxy_secret_path | `String \| null` | `"proxy-secret"` | Path may be `null`. | Path to Telegram infrastructure proxy-secret file used by ME handshake logic. |
+| proxy_config_v4_cache_path | `String \| null` | `"cache/proxy-config-v4.txt"` | — | Optional cache path for raw `getProxyConfig` (IPv4) snapshot. |
+| proxy_config_v6_cache_path | `String \| null` | `"cache/proxy-config-v6.txt"` | — | Optional cache path for raw `getProxyConfigV6` (IPv6) snapshot. |
+| ad_tag | `String \| null` | `null` | — | Global fallback ad tag (32 hex characters). |
+| middle_proxy_nat_ip | `IpAddr \| null` | `null` | Must be a valid IP when set. | Manual public NAT IP override used as ME address material when set. |
+| middle_proxy_nat_probe | `bool` | `true` | Auto-forced to `true` when `use_middle_proxy = true`. | Enables ME NAT probing; runtime may force it on when ME mode is active. |
+| middle_proxy_nat_stun | `String \| null` | `null` | Deprecated. Use `network.stun_servers`. | Deprecated legacy single STUN server for NAT probing. |
+| middle_proxy_nat_stun_servers | `String[]` | `[]` | Deprecated. Use `network.stun_servers`. | Deprecated legacy STUN list for NAT probing fallback. |
+| stun_nat_probe_concurrency | `usize` | `8` | Must be `> 0`. | Maximum number of parallel STUN probes during NAT/public endpoint discovery. |
+| middle_proxy_pool_size | `usize` | `8` | none | Target size of active ME writer pool. |
+| middle_proxy_warm_standby | `usize` | `16` | none | Reserved compatibility field in current runtime revision. |
+| me_init_retry_attempts | `u32` | `0` | `0..=1_000_000`. | Startup retries for ME pool initialization (`0` means unlimited). |
+| me2dc_fallback | `bool` | `true` | — | Allows fallback from ME mode to direct DC when ME startup fails. |
+| me_keepalive_enabled | `bool` | `true` | none | Enables periodic ME keepalive/ping traffic. |
+| me_keepalive_interval_secs | `u64` | `8` | none | Base ME keepalive interval in seconds. |
+| me_keepalive_jitter_secs | `u64` | `2` | none | Keepalive jitter in seconds to reduce synchronized bursts. |
+| me_keepalive_payload_random | `bool` | `true` | none | Randomizes keepalive payload bytes instead of fixed zero payload. |
+| rpc_proxy_req_every | `u64` | `0` | `0` or `10..=300`. | Interval for service `RPC_PROXY_REQ` activity signals (`0` disables). |
+| me_writer_cmd_channel_capacity | `usize` | `4096` | Must be `> 0`. | Capacity of per-writer command channel. |
+| me_route_channel_capacity | `usize` | `768` | Must be `> 0`. | Capacity of per-connection ME response route channel. |
+| me_c2me_channel_capacity | `usize` | `1024` | Must be `> 0`. | Capacity of per-client command queue (client reader -> ME sender). |
+| me_reader_route_data_wait_ms | `u64` | `2` | `0..=20`. | Bounded wait for routing ME DATA to per-connection queue (`0` = no wait). |
+| me_d2c_flush_batch_max_frames | `usize` | `32` | `1..=512`. | Max ME->client frames coalesced before flush. |
+| me_d2c_flush_batch_max_bytes | `usize` | `131072` | `4096..=2_097_152`. | Max ME->client payload bytes coalesced before flush. |
+| me_d2c_flush_batch_max_delay_us | `u64` | `500` | `0..=5000`. | Max microsecond wait for coalescing more ME->client frames (`0` disables timed coalescing). |
+| me_d2c_ack_flush_immediate | `bool` | `true` | — | Flushes client writer immediately after quick-ack write. |
+| direct_relay_copy_buf_c2s_bytes | `usize` | `65536` | `4096..=1_048_576`. | Copy buffer size for client->DC direction in direct relay. |
+| direct_relay_copy_buf_s2c_bytes | `usize` | `262144` | `8192..=2_097_152`. | Copy buffer size for DC->client direction in direct relay. |
+| crypto_pending_buffer | `usize` | `262144` | — | Max pending ciphertext buffer per client writer (bytes). |
+| max_client_frame | `usize` | `16777216` | — | Maximum allowed client MTProto frame size (bytes). |
+| desync_all_full | `bool` | `false` | — | Emits full crypto-desync forensic logs for every event. |
+| beobachten | `bool` | `true` | — | Enables per-IP forensic observation buckets. |
+| beobachten_minutes | `u64` | `10` | Must be `> 0`. | Retention window (minutes) for per-IP observation buckets. |
+| beobachten_flush_secs | `u64` | `15` | Must be `> 0`. | Snapshot flush interval (seconds) for observation output file. |
+| beobachten_file | `String` | `"cache/beobachten.txt"` | — | Observation snapshot output file path. |
+| hardswap | `bool` | `true` | none | Enables generation-based ME hardswap strategy. |
+| me_warmup_stagger_enabled | `bool` | `true` | none | Staggers extra ME warmup dials to avoid connection spikes. |
+| me_warmup_step_delay_ms | `u64` | `500` | none | Base delay in milliseconds between warmup dial steps. |
+| me_warmup_step_jitter_ms | `u64` | `300` | none | Additional random delay in milliseconds for warmup steps. |
+| me_reconnect_max_concurrent_per_dc | `u32` | `8` | none | Limits concurrent reconnect workers per DC during health recovery. |
+| me_reconnect_backoff_base_ms | `u64` | `500` | none | Initial reconnect backoff in milliseconds. |
+| me_reconnect_backoff_cap_ms | `u64` | `30000` | none | Maximum reconnect backoff cap in milliseconds. |
+| me_reconnect_fast_retry_count | `u32` | `16` | none | Immediate retry budget before long backoff behavior applies. |
+| me_single_endpoint_shadow_writers | `u8` | `2` | `0..=32`. | Additional reserve writers for one-endpoint DC groups. |
+| me_single_endpoint_outage_mode_enabled | `bool` | `true` | — | Enables aggressive outage recovery for one-endpoint DC groups. |
+| me_single_endpoint_outage_disable_quarantine | `bool` | `true` | — | Ignores endpoint quarantine in one-endpoint outage mode. |
+| me_single_endpoint_outage_backoff_min_ms | `u64` | `250` | Must be `> 0`; also `<= me_single_endpoint_outage_backoff_max_ms`. | Minimum reconnect backoff in outage mode (ms). |
+| me_single_endpoint_outage_backoff_max_ms | `u64` | `3000` | Must be `> 0`; also `>= me_single_endpoint_outage_backoff_min_ms`. | Maximum reconnect backoff in outage mode (ms). |
+| me_single_endpoint_shadow_rotate_every_secs | `u64` | `900` | — | Periodic shadow writer rotation interval (`0` disables). |
+| me_floor_mode | `"static" \| "adaptive"` | `"adaptive"` | — | Writer floor policy mode. |
+| me_adaptive_floor_idle_secs | `u64` | `90` | — | Idle time before adaptive floor may reduce one-endpoint target. |
+| me_adaptive_floor_min_writers_single_endpoint | `u8` | `1` | `1..=32`. | Minimum adaptive writer target for one-endpoint DC groups. |
+| me_adaptive_floor_min_writers_multi_endpoint | `u8` | `1` | `1..=32`. | Minimum adaptive writer target for multi-endpoint DC groups. |
+| me_adaptive_floor_recover_grace_secs | `u64` | `180` | — | Grace period to hold static floor after activity. |
+| me_adaptive_floor_writers_per_core_total | `u16` | `48` | Must be `> 0`. | Global writer budget per logical CPU core in adaptive mode. |
+| me_adaptive_floor_cpu_cores_override | `u16` | `0` | — | Manual CPU core count override (`0` uses auto-detection). |
+| me_adaptive_floor_max_extra_writers_single_per_core | `u16` | `1` | — | Per-core max extra writers above base floor for one-endpoint DCs. |
+| me_adaptive_floor_max_extra_writers_multi_per_core | `u16` | `2` | — | Per-core max extra writers above base floor for multi-endpoint DCs. |
+| me_adaptive_floor_max_active_writers_per_core | `u16` | `64` | Must be `> 0`. | Hard cap for active ME writers per logical CPU core. |
+| me_adaptive_floor_max_warm_writers_per_core | `u16` | `64` | Must be `> 0`. | Hard cap for warm ME writers per logical CPU core. |
+| me_adaptive_floor_max_active_writers_global | `u32` | `256` | Must be `> 0`. | Hard global cap for active ME writers. |
+| me_adaptive_floor_max_warm_writers_global | `u32` | `256` | Must be `> 0`. | Hard global cap for warm ME writers. |
+| upstream_connect_retry_attempts | `u32` | `2` | Must be `> 0`. | Connect attempts for selected upstream before error/fallback. |
+| upstream_connect_retry_backoff_ms | `u64` | `100` | — | Delay between upstream connect attempts (ms). |
+| upstream_connect_budget_ms | `u64` | `3000` | Must be `> 0`. | Total wall-clock budget for one upstream connect request (ms). |
+| upstream_unhealthy_fail_threshold | `u32` | `5` | Must be `> 0`. | Consecutive failed requests before upstream is marked unhealthy. |
+| upstream_connect_failfast_hard_errors | `bool` | `false` | — | Skips additional retries for hard non-transient connect errors. |
+| stun_iface_mismatch_ignore | `bool` | `false` | none | Reserved compatibility flag in current runtime revision. |
+| unknown_dc_log_path | `String \| null` | `"unknown-dc.txt"` | — | File path for unknown-DC request logging (`null` disables file path). |
+| unknown_dc_file_log_enabled | `bool` | `false` | — | Enables unknown-DC file logging. |
+| log_level | `"debug" \| "verbose" \| "normal" \| "silent"` | `"normal"` | — | Runtime logging verbosity. |
+| disable_colors | `bool` | `false` | — | Disables ANSI colors in logs. |
+| me_socks_kdf_policy | `"strict" \| "compat"` | `"strict"` | — | SOCKS-bound KDF fallback policy for ME handshake. |
+| me_route_backpressure_base_timeout_ms | `u64` | `25` | Must be `> 0`. | Base backpressure timeout for route-channel send (ms). |
+| me_route_backpressure_high_timeout_ms | `u64` | `120` | Must be `>= me_route_backpressure_base_timeout_ms`. | High backpressure timeout when queue occupancy exceeds watermark (ms). |
+| me_route_backpressure_high_watermark_pct | `u8` | `80` | `1..=100`. | Queue occupancy threshold (%) for high timeout mode. |
+| me_health_interval_ms_unhealthy | `u64` | `1000` | Must be `> 0`. | Health monitor interval while writer coverage is degraded (ms). |
+| me_health_interval_ms_healthy | `u64` | `3000` | Must be `> 0`. | Health monitor interval while writer coverage is healthy (ms). |
+| me_admission_poll_ms | `u64` | `1000` | Must be `> 0`. | Poll interval for conditional-admission checks (ms). |
+| me_warn_rate_limit_ms | `u64` | `5000` | Must be `> 0`. | Cooldown for repetitive ME warning logs (ms). |
+| me_route_no_writer_mode | `"async_recovery_failfast" \| "inline_recovery_legacy" \| "hybrid_async_persistent"` | `"hybrid_async_persistent"` | — | Route behavior when no writer is immediately available. |
+| me_route_no_writer_wait_ms | `u64` | `250` | `10..=5000`. | Max wait in async-recovery failfast mode (ms). |
+| me_route_inline_recovery_attempts | `u32` | `3` | Must be `> 0`. | Inline recovery attempts in legacy mode. |
+| me_route_inline_recovery_wait_ms | `u64` | `3000` | `10..=30000`. | Max inline recovery wait in legacy mode (ms). |
+| fast_mode_min_tls_record | `usize` | `0` | — | Minimum TLS record size when fast-mode coalescing is enabled (`0` disables). |
+| update_every | `u64 \| null` | `300` | If set: must be `> 0`; if `null`: legacy fallback path is used. | Unified refresh interval for ME config and proxy-secret updater tasks. |
+| me_reinit_every_secs | `u64` | `900` | Must be `> 0`. | Periodic interval for zero-downtime ME reinit cycle. |
+| me_hardswap_warmup_delay_min_ms | `u64` | `1000` | Must be `<= me_hardswap_warmup_delay_max_ms`. | Lower bound for hardswap warmup dial spacing. |
+| me_hardswap_warmup_delay_max_ms | `u64` | `2000` | Must be `> 0`. | Upper bound for hardswap warmup dial spacing. |
+| me_hardswap_warmup_extra_passes | `u8` | `3` | Must be within `[0, 10]`. | Additional warmup passes after the base pass in one hardswap cycle. |
+| me_hardswap_warmup_pass_backoff_base_ms | `u64` | `500` | Must be `> 0`. | Base backoff between extra hardswap warmup passes. |
+| me_config_stable_snapshots | `u8` | `2` | Must be `> 0`. | Number of identical ME config snapshots required before apply. |
+| me_config_apply_cooldown_secs | `u64` | `300` | none | Cooldown between applied ME endpoint-map updates. |
+| me_snapshot_require_http_2xx | `bool` | `true` | — | Requires 2xx HTTP responses for applying config snapshots. |
+| me_snapshot_reject_empty_map | `bool` | `true` | — | Rejects empty config snapshots. |
+| me_snapshot_min_proxy_for_lines | `u32` | `1` | Must be `> 0`. | Minimum parsed `proxy_for` rows required to accept snapshot. |
+| proxy_secret_stable_snapshots | `u8` | `2` | Must be `> 0`. | Number of identical proxy-secret snapshots required before rotation. |
+| proxy_secret_rotate_runtime | `bool` | `true` | none | Enables runtime proxy-secret rotation from updater snapshots. |
+| me_secret_atomic_snapshot | `bool` | `true` | — | Keeps selector and secret bytes from the same snapshot atomically. |
+| proxy_secret_len_max | `usize` | `256` | Must be within `[32, 4096]`. | Upper length limit for accepted proxy-secret bytes. |
+| me_pool_drain_ttl_secs | `u64` | `90` | none | Time window where stale writers remain fallback-eligible after map change. |
+| me_pool_drain_threshold | `u64` | `128` | — | Max draining stale writers before batch force-close (`0` disables threshold cleanup). |
+| me_pool_drain_soft_evict_enabled | `bool` | `true` | — | Enables gradual soft-eviction of stale writers during drain/reinit instead of immediate hard close. |
+| me_pool_drain_soft_evict_grace_secs | `u64` | `30` | `0..=3600`. | Grace period before stale writers become soft-evict candidates. |
+| me_pool_drain_soft_evict_per_writer | `u8` | `1` | `1..=16`. | Maximum stale routes soft-evicted per writer in one eviction pass. |
+| me_pool_drain_soft_evict_budget_per_core | `u16` | `8` | `1..=64`. | Per-core budget limiting aggregate soft-eviction work per pass. |
+| me_pool_drain_soft_evict_cooldown_ms | `u64` | `5000` | Must be `> 0`. | Cooldown between consecutive soft-eviction passes (ms). |
+| me_bind_stale_mode | `"never" \| "ttl" \| "always"` | `"ttl"` | — | Policy for new binds on stale draining writers. |
+| me_bind_stale_ttl_secs | `u64` | `90` | — | TTL for stale bind allowance when stale mode is `ttl`. |
+| me_pool_min_fresh_ratio | `f32` | `0.8` | Must be within `[0.0, 1.0]`. | Minimum fresh desired-DC coverage ratio before stale writers are drained. |
+| me_reinit_drain_timeout_secs | `u64` | `120` | `0` disables force-close; if `> 0` and `< me_pool_drain_ttl_secs`, runtime bumps it to TTL. | Force-close timeout for draining stale writers (`0` keeps indefinite draining). |
+| proxy_secret_auto_reload_secs | `u64` | `3600` | Deprecated. Use `general.update_every`. | Deprecated legacy secret reload interval (fallback when `update_every` is not set). |
+| proxy_config_auto_reload_secs | `u64` | `3600` | Deprecated. Use `general.update_every`. | Deprecated legacy config reload interval (fallback when `update_every` is not set). |
+| me_reinit_singleflight | `bool` | `true` | — | Serializes ME reinit cycles across trigger sources. |
+| me_reinit_trigger_channel | `usize` | `64` | Must be `> 0`. | Trigger queue capacity for reinit scheduler. |
+| me_reinit_coalesce_window_ms | `u64` | `200` | — | Trigger coalescing window before starting reinit (ms). |
+| me_deterministic_writer_sort | `bool` | `true` | — | Enables deterministic candidate sort for writer binding path. |
+| me_writer_pick_mode | `"sorted_rr" \| "p2c"` | `"p2c"` | — | Writer selection mode for route bind path. |
+| me_writer_pick_sample_size | `u8` | `3` | `2..=4`. | Number of candidates sampled by picker in `p2c` mode. |
+| ntp_check | `bool` | `true` | — | Enables NTP drift check at startup. |
+| ntp_servers | `String[]` | `["pool.ntp.org"]` | — | NTP servers used for drift check. |
+| auto_degradation_enabled | `bool` | `true` | none | Reserved compatibility flag in current runtime revision. |
+| degradation_min_unavailable_dc_groups | `u8` | `2` | none | Reserved compatibility threshold in current runtime revision. |
 
 ## [general.modes]
 
-| Parameter | Type | Description |
-|---|---|---|
-| classic | `bool` | Enables classic MTProxy mode. |
-| secure | `bool` | Enables secure mode. |
-| tls | `bool` | Enables TLS mode. |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| classic | `bool` | `false` | — | Enables classic MTProxy mode. |
+| secure | `bool` | `false` | — | Enables secure mode. |
+| tls | `bool` | `true` | — | Enables TLS mode. |
 
 ## [general.links]
 
-| Parameter | Type | Description |
-|---|---|---|
-| show | `"*" \| String[]` | Selects users whose tg:// links are shown at startup. |
-| public_host | `String` | Public hostname/IP override for generated tg:// links. |
-| public_port | `u16` | Public port override for generated tg:// links. |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| show | `"*" \| String[]` | `"*"` | — | Selects users whose tg:// links are shown at startup. |
+| public_host | `String \| null` | `null` | — | Public hostname/IP override for generated tg:// links. |
+| public_port | `u16 \| null` | `null` | — | Public port override for generated tg:// links. |
 
 ## [general.telemetry]
 
-| Parameter | Type | Description |
-|---|---|---|
-| core_enabled | `bool` | Enables core hot-path telemetry counters. |
-| user_enabled | `bool` | Enables per-user telemetry counters. |
-| me_level | `"silent" \| "normal" \| "debug"` | Middle-End telemetry verbosity level. |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| core_enabled | `bool` | `true` | — | Enables core hot-path telemetry counters. |
+| user_enabled | `bool` | `true` | — | Enables per-user telemetry counters. |
+| me_level | `"silent" \| "normal" \| "debug"` | `"normal"` | — | Middle-End telemetry verbosity level. |
 
 ## [network]
 
-| Parameter | Type | Description |
-|---|---|---|
-| ipv4 | `bool` | Enables IPv4 networking. |
-| ipv6 | `bool` | Enables/disables IPv6 (`null` = auto-detect availability). |
-| prefer | `u8` | Preferred IP family for selection (`4` or `6`). |
-| multipath | `bool` | Enables multipath behavior where supported. |
-| stun_use | `bool` | Global switch for STUN probing. |
-| stun_servers | `String[]` | STUN server list for public IP detection. |
-| stun_tcp_fallback | `bool` | Enables TCP STUN fallback when UDP STUN is blocked. |
-| http_ip_detect_urls | `String[]` | HTTP endpoints used as fallback public IP detectors. |
-| cache_public_ip_path | `String` | File path for caching detected public IP. |
-| dns_overrides | `String[]` | Runtime DNS overrides in `host:port:ip` format. |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| ipv4 | `bool` | `true` | — | Enables IPv4 networking. |
+| ipv6 | `bool` | `false` | — | Enables/disables IPv6 when set |
+| prefer | `u8` | `4` | Must be `4` or `6`. | Preferred IP family for selection (`4` or `6`). |
+| multipath | `bool` | `false` | — | Enables multipath behavior where supported. |
+| stun_use | `bool` | `true` | none | Global STUN switch; when `false`, STUN probing path is disabled. |
+| stun_servers | `String[]` | Built-in STUN list (13 hosts) | Deduplicated; empty values are removed. | Primary STUN server list for NAT/public endpoint discovery. |
+| stun_tcp_fallback | `bool` | `true` | none | Enables TCP fallback for STUN when UDP path is blocked. |
+| http_ip_detect_urls | `String[]` | `["https://ifconfig.me/ip", "https://api.ipify.org"]` | none | HTTP fallback endpoints for public IP detection when STUN is unavailable. |
+| cache_public_ip_path | `String` | `"cache/public_ip.txt"` | — | File path for caching detected public IP. |
+| dns_overrides | `String[]` | `[]` | Must match `host:port:ip`; IPv6 must be bracketed. | Runtime DNS overrides in `host:port:ip` format. |
 
 ## [server]
 
-| Parameter | Type | Description |
-|---|---|---|
-| port | `u16` | Main proxy listen port. |
-| listen_addr_ipv4 | `String` | IPv4 bind address for TCP listener. |
-| listen_addr_ipv6 | `String` | IPv6 bind address for TCP listener. |
-| listen_unix_sock | `String` | Unix socket path for listener. |
-| listen_unix_sock_perm | `String` | Unix socket permissions in octal string (e.g., `"0666"`). |
-| listen_tcp | `bool` | Explicit TCP listener enable/disable override. |
-| proxy_protocol | `bool` | Enables HAProxy PROXY protocol parsing on incoming client connections. |
-| proxy_protocol_header_timeout_ms | `u64` | Timeout for PROXY protocol header read/parse (ms). |
-| metrics_port | `u16` | Metrics endpoint port (enables metrics listener). |
-| metrics_listen | `String` | Full metrics bind address (`IP:PORT`), overrides `metrics_port`. |
-| metrics_whitelist | `IpNetwork[]` | CIDR whitelist for metrics endpoint access. |
-| max_connections | `u32` | Max concurrent client connections (`0` = unlimited). |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| port | `u16` | `443` | — | Main proxy listen port. |
+| listen_addr_ipv4 | `String \| null` | `"0.0.0.0"` | — | IPv4 bind address for TCP listener. |
+| listen_addr_ipv6 | `String \| null` | `"::"` | — | IPv6 bind address for TCP listener. |
+| listen_unix_sock | `String \| null` | `null` | — | Unix socket path for listener. |
+| listen_unix_sock_perm | `String \| null` | `null` | — | Unix socket permissions in octal string (e.g., `"0666"`). |
+| listen_tcp | `bool \| null` | `null` (auto) | — | Explicit TCP listener enable/disable override. |
+| proxy_protocol | `bool` | `false` | — | Enables HAProxy PROXY protocol parsing on incoming client connections. |
+| proxy_protocol_header_timeout_ms | `u64` | `500` | Must be `> 0`. | Timeout for PROXY protocol header read/parse (ms). |
+| metrics_port | `u16 \| null` | `null` | — | Metrics endpoint port (enables metrics listener). |
+| metrics_listen | `String \| null` | `null` | — | Full metrics bind address (`IP:PORT`), overrides `metrics_port`. |
+| metrics_whitelist | `IpNetwork[]` | `["127.0.0.1/32", "::1/128"]` | — | CIDR whitelist for metrics endpoint access. |
+| max_connections | `u32` | `10000` | — | Max concurrent client connections (`0` = unlimited). |
 
 ## [server.api]
 
-| Parameter | Type | Description |
-|---|---|---|
-| enabled | `bool` | Enables control-plane REST API. |
-| listen | `String` | API bind address in `IP:PORT` format. |
-| whitelist | `IpNetwork[]` | CIDR whitelist allowed to access API. |
-| auth_header | `String` | Exact expected `Authorization` header value (empty = disabled). |
-| request_body_limit_bytes | `usize` | Maximum accepted HTTP request body size. |
-| minimal_runtime_enabled | `bool` | Enables minimal runtime snapshots endpoint logic. |
-| minimal_runtime_cache_ttl_ms | `u64` | Cache TTL for minimal runtime snapshots (ms; `0` disables cache). |
-| runtime_edge_enabled | `bool` | Enables runtime edge endpoints. |
-| runtime_edge_cache_ttl_ms | `u64` | Cache TTL for runtime edge aggregation payloads (ms). |
-| runtime_edge_top_n | `usize` | Top-N size for edge connection leaderboard. |
-| runtime_edge_events_capacity | `usize` | Ring-buffer capacity for runtime edge events. |
-| read_only | `bool` | Rejects mutating API endpoints when enabled. |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| enabled | `bool` | `true` | — | Enables control-plane REST API. |
+| listen | `String` | `"0.0.0.0:9091"` | Must be valid `IP:PORT`. | API bind address in `IP:PORT` format. |
+| whitelist | `IpNetwork[]` | `["127.0.0.0/8"]` | — | CIDR whitelist allowed to access API. |
+| auth_header | `String` | `""` | — | Exact expected `Authorization` header value (empty = disabled). |
+| request_body_limit_bytes | `usize` | `65536` | Must be `> 0`. | Maximum accepted HTTP request body size. |
+| minimal_runtime_enabled | `bool` | `true` | — | Enables minimal runtime snapshots endpoint logic. |
+| minimal_runtime_cache_ttl_ms | `u64` | `1000` | `0..=60000`. | Cache TTL for minimal runtime snapshots (ms; `0` disables cache). |
+| runtime_edge_enabled | `bool` | `false` | — | Enables runtime edge endpoints. |
+| runtime_edge_cache_ttl_ms | `u64` | `1000` | `0..=60000`. | Cache TTL for runtime edge aggregation payloads (ms). |
+| runtime_edge_top_n | `usize` | `10` | `1..=1000`. | Top-N size for edge connection leaderboard. |
+| runtime_edge_events_capacity | `usize` | `256` | `16..=4096`. | Ring-buffer capacity for runtime edge events. |
+| read_only | `bool` | `false` | — | Rejects mutating API endpoints when enabled. |
 
 ## [[server.listeners]]
 
-| Parameter | Type | Description |
-|---|---|---|
-| ip | `IpAddr` | Listener bind IP. |
-| announce | `String` | Public IP/domain announced in proxy links (priority over `announce_ip`). |
-| announce_ip | `IpAddr` | Deprecated legacy announce IP (migrated to `announce` if needed). |
-| proxy_protocol | `bool` | Per-listener override for PROXY protocol enable flag. |
-| reuse_allow | `bool` | Enables `SO_REUSEPORT` for multi-instance bind sharing. |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| ip | `IpAddr` | — | — | Listener bind IP. |
+| announce | `String \| null` | — | — | Public IP/domain announced in proxy links (priority over `announce_ip`). |
+| announce_ip | `IpAddr \| null` | — | — | Deprecated legacy announce IP (migrated to `announce` if needed). |
+| proxy_protocol | `bool \| null` | `null` | — | Per-listener override for PROXY protocol enable flag. |
+| reuse_allow | `bool` | `false` | — | Enables `SO_REUSEPORT` for multi-instance bind sharing. |
 
 ## [timeouts]
 
-| Parameter | Type | Description |
-|---|---|---|
-| client_handshake | `u64` | Client handshake timeout. |
-| tg_connect | `u64` | Upstream Telegram connect timeout. |
-| client_keepalive | `u64` | Client keepalive timeout. |
-| client_ack | `u64` | Client ACK timeout. |
-| me_one_retry | `u8` | Quick ME reconnect attempts for single-address DC. |
-| me_one_timeout_ms | `u64` | Timeout per quick attempt for single-address DC (ms). |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| client_handshake | `u64` | `30` | — | Client handshake timeout. |
+| tg_connect | `u64` | `10` | — | Upstream Telegram connect timeout. |
+| client_keepalive | `u64` | `15` | — | Client keepalive timeout. |
+| client_ack | `u64` | `90` | — | Client ACK timeout. |
+| me_one_retry | `u8` | `12` | none | Fast reconnect attempts budget for single-endpoint DC scenarios. |
+| me_one_timeout_ms | `u64` | `1200` | none | Timeout in milliseconds for each quick single-endpoint reconnect attempt. |
 
 ## [censorship]
 
-| Parameter | Type | Description |
-|---|---|---|
-| tls_domain | `String` | Primary TLS domain used in fake TLS handshake profile. |
-| tls_domains | `String[]` | Additional TLS domains for generating multiple links. |
-| mask | `bool` | Enables masking/fronting relay mode. |
-| mask_host | `String` | Upstream mask host for TLS fronting relay. |
-| mask_port | `u16` | Upstream mask port for TLS fronting relay. |
-| mask_unix_sock | `String` | Unix socket path for mask backend instead of TCP host/port. |
-| fake_cert_len | `usize` | Length of synthetic certificate payload when emulation data is unavailable. |
-| tls_emulation | `bool` | Enables certificate/TLS behavior emulation from cached real fronts. |
-| tls_front_dir | `String` | Directory path for TLS front cache storage. |
-| server_hello_delay_min_ms | `u64` | Minimum server_hello delay for anti-fingerprint behavior (ms). |
-| server_hello_delay_max_ms | `u64` | Maximum server_hello delay for anti-fingerprint behavior (ms). |
-| tls_new_session_tickets | `u8` | Number of `NewSessionTicket` messages to emit after handshake. |
-| tls_full_cert_ttl_secs | `u64` | TTL for sending full cert payload per (domain, client IP) tuple. |
-| alpn_enforce | `bool` | Enforces ALPN echo behavior based on client preference. |
-| mask_proxy_protocol | `u8` | PROXY protocol mode for mask backend (`0` disabled, `1` v1, `2` v2). |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| tls_domain | `String` | `"petrovich.ru"` | — | Primary TLS domain used in fake TLS handshake profile. |
+| tls_domains | `String[]` | `[]` | — | Additional TLS domains for generating multiple links. |
+| mask | `bool` | `true` | — | Enables masking/fronting relay mode. |
+| mask_host | `String \| null` | `null` | — | Upstream mask host for TLS fronting relay. |
+| mask_port | `u16` | `443` | — | Upstream mask port for TLS fronting relay. |
+| mask_unix_sock | `String \| null` | `null` | — | Unix socket path for mask backend instead of TCP host/port. |
+| fake_cert_len | `usize` | `2048` | — | Length of synthetic certificate payload when emulation data is unavailable. |
+| tls_emulation | `bool` | `true` | — | Enables certificate/TLS behavior emulation from cached real fronts. |
+| tls_front_dir | `String` | `"tlsfront"` | — | Directory path for TLS front cache storage. |
+| server_hello_delay_min_ms | `u64` | `0` | — | Minimum server_hello delay for anti-fingerprint behavior (ms). |
+| server_hello_delay_max_ms | `u64` | `0` | — | Maximum server_hello delay for anti-fingerprint behavior (ms). |
+| tls_new_session_tickets | `u8` | `0` | — | Number of `NewSessionTicket` messages to emit after handshake. |
+| tls_full_cert_ttl_secs | `u64` | `90` | — | TTL for sending full cert payload per (domain, client IP) tuple. |
+| alpn_enforce | `bool` | `true` | — | Enforces ALPN echo behavior based on client preference. |
+| mask_proxy_protocol | `u8` | `0` | — | PROXY protocol mode for mask backend (`0` disabled, `1` v1, `2` v2). |
 
 ## [access]
 
-| Parameter | Type | Description |
-|---|---|---|
-| users | `Map<String, String>` | Username -> 32-hex secret mapping. |
-| user_ad_tags | `Map<String, String>` | Per-user ad tags (32 hex chars). |
-| user_max_tcp_conns | `Map<String, usize>` | Per-user maximum concurrent TCP connections. |
-| user_expirations | `Map<String, DateTime<Utc>>` | Per-user account expiration timestamps. |
-| user_data_quota | `Map<String, u64>` | Per-user data quota limits. |
-| user_max_unique_ips | `Map<String, usize>` | Per-user unique source IP limits. |
-| user_max_unique_ips_global_each | `usize` | Global fallback per-user unique IP limit when no per-user override exists. |
-| user_max_unique_ips_mode | `"active_window" \| "time_window" \| "combined"` | Unique source IP limit accounting mode. |
-| user_max_unique_ips_window_secs | `u64` | Recent-window size for unique IP accounting (seconds). |
-| replay_check_len | `usize` | Replay check storage length. |
-| replay_window_secs | `u64` | Replay protection time window in seconds. |
-| ignore_time_skew | `bool` | Ignores client/server timestamp skew in replay validation. |
+| Parameter | Type | Default | Constraints / validation | TOML shape example | Description |
+|---|---|---|---|---|---|
+| users | `Map<String, String>` | `{"default": "000…000"}` | Secret must be 32 hex characters. | `[access.users]`<br>`user = "32-hex secret"`<br>`user2 = "32-hex secret"` | User credentials map used for client authentication. |
+| user_ad_tags | `Map<String, String>` | `{}` | Every value must be exactly 32 hex characters. | `[access.user_ad_tags]`<br>`user = "32-hex ad_tag"` | Per-user ad tags used as override over `general.ad_tag`. |
+| user_max_tcp_conns | `Map<String, usize>` | `{}` | — | `[access.user_max_tcp_conns]`<br>`user = 500` | Per-user maximum concurrent TCP connections. |
+| user_expirations | `Map<String, DateTime<Utc>>` | `{}` | Timestamp must be valid RFC3339/ISO-8601 datetime. | `[access.user_expirations]`<br>`user = "2026-12-31T23:59:59Z"` | Per-user account expiration timestamps. |
+| user_data_quota | `Map<String, u64>` | `{}` | — | `[access.user_data_quota]`<br>`user = 1073741824` | Per-user traffic quota in bytes. |
+| user_max_unique_ips | `Map<String, usize>` | `{}` | — | `[access.user_max_unique_ips]`<br>`user = 16` | Per-user unique source IP limits. |
+| user_max_unique_ips_global_each | `usize` | `0` | — | `user_max_unique_ips_global_each = 0` | Global fallback used when `[access.user_max_unique_ips]` has no per-user override. |
+| user_max_unique_ips_mode | `"active_window" \| "time_window" \| "combined"` | `"active_window"` | — | `user_max_unique_ips_mode = "active_window"` | Unique source IP limit accounting mode. |
+| user_max_unique_ips_window_secs | `u64` | `30` | Must be `> 0`. | `user_max_unique_ips_window_secs = 30` | Window size (seconds) used by unique-IP accounting modes that use time windows. |
+| replay_check_len | `usize` | `65536` | — | `replay_check_len = 65536` | Replay-protection storage length. |
+| replay_window_secs | `u64` | `1800` | — | `replay_window_secs = 1800` | Replay-protection window in seconds. |
+| ignore_time_skew | `bool` | `false` | — | `ignore_time_skew = false` | Disables client/server timestamp skew checks in replay validation when enabled. |
 
 ## [[upstreams]]
 
-| Parameter | Type | Description |
-|---|---|---|
-| type | `"direct" \| "socks4" \| "socks5"` | Upstream transport type selector. |
-| weight | `u16` | Weighted selection coefficient for this upstream. |
-| enabled | `bool` | Enables/disables this upstream entry. |
-| scopes | `String` | Comma-separated scope tags for routing. |
-| interface | `String` | Optional outgoing interface name (`direct`, `socks4`, `socks5`). |
-| bind_addresses | `String[]` | Optional source bind addresses for `direct` upstream. |
-| address | `String` | Upstream proxy address (`host:port`) for SOCKS upstreams. |
-| user_id | `String` | SOCKS4 user ID (only for `type = "socks4"`). |
-| username | `String` | SOCKS5 username (only for `type = "socks5"`). |
-| password | `String` | SOCKS5 password (only for `type = "socks5"`). |
+| Parameter | Type | Default | Constraints / validation | Description |
+|---|---|---|---|---|
+| type | `"direct" \| "socks4" \| "socks5"` | — | Required field. | Upstream transport type selector. |
+| weight | `u16` | `1` | none | Base weight used by weighted-random upstream selection. |
+| enabled | `bool` | `true` | none | Disabled entries are excluded from upstream selection at runtime. |
+| scopes | `String` | `""` | none | Comma-separated scope tags used for request-level upstream filtering. |
+| interface | `String \| null` | `null` | Optional; type-specific runtime rules apply. | Optional outbound interface/local bind hint (supported with type-specific rules). |
+| bind_addresses | `String[] \| null` | `null` | Applies to `type = "direct"`. | Optional explicit local source bind addresses for `type = "direct"`. |
+| address | `String` | — | Required for `type = "socks4"` and `type = "socks5"`. | SOCKS server endpoint (`host:port` or `ip:port`) for SOCKS upstream types. |
+| user_id | `String \| null` | `null` | Only for `type = "socks4"`. | SOCKS4 CONNECT user ID (`type = "socks4"` only). |
+| username | `String \| null` | `null` | Only for `type = "socks5"`. | SOCKS5 username (`type = "socks5"` only). |
+| password | `String \| null` | `null` | Only for `type = "socks5"`. | SOCKS5 password (`type = "socks5"` only). |

docs/FAQ.en.md

@@ -120,3 +120,17 @@ password = "pass"          # Password for Auth on SOCKS-server
 weight = 1                 # Set Weight for Scenarios
 enabled = true
 ```
+
+#### Shadowsocks as Upstream
+Requires `use_middle_proxy = false`.
+
+```toml
+[general]
+use_middle_proxy = false
+
+[[upstreams]]
+type = "shadowsocks"
+url = "ss://2022-blake3-aes-256-gcm:BASE64_KEY@1.2.3.4:8388"
+weight = 1
+enabled = true
+```

docs/FAQ.ru.md

@@ -121,3 +121,16 @@ weight = 1                 # Set Weight for Scenarios
 enabled = true
 ```
 
+#### Shadowsocks как Upstream
+Требует `use_middle_proxy = false`.
+
+```toml
+[general]
+use_middle_proxy = false
+
+[[upstreams]]
+type = "shadowsocks"
+url = "ss://2022-blake3-aes-256-gcm:BASE64_KEY@1.2.3.4:8388"
+weight = 1
+enabled = true
+```

docs/TUNING.de.md

@@ -82,7 +82,7 @@ Die unten angegebenen `Default`-Werte sind Code-Defaults (bei fehlendem Schlüss
 
 | Feld | Gilt für | Typ | Pflicht | Default | Bedeutung |
 |---|---|---|---|---|---|
-| `[[upstreams]].type` | alle Upstreams | `"direct" \| "socks4" \| "socks5"` | ja | n/a | Upstream-Transporttyp. |
+| `[[upstreams]].type` | alle Upstreams | `"direct" \| "socks4" \| "socks5" \| "shadowsocks"` | ja | n/a | Upstream-Transporttyp. |
 | `[[upstreams]].weight` | alle Upstreams | `u16` | nein | `1` | Basisgewicht für weighted-random Auswahl. |
 | `[[upstreams]].enabled` | alle Upstreams | `bool` | nein | `true` | Deaktivierte Einträge werden beim Start ignoriert. |
 | `[[upstreams]].scopes` | alle Upstreams | `String` | nein | `""` | Komma-separierte Scope-Tags für Request-Routing. |
@@ -95,6 +95,8 @@ Die unten angegebenen `Default`-Werte sind Code-Defaults (bei fehlendem Schlüss
 | `interface` | `socks5` | `Option<String>` | nein | `null` | Wird nur genutzt, wenn `address` als `ip:port` angegeben ist. |
 | `username` | `socks5` | `Option<String>` | nein | `null` | SOCKS5 Benutzername. |
 | `password` | `socks5` | `Option<String>` | nein | `null` | SOCKS5 Passwort. |
+| `url` | `shadowsocks` | `String` | ja | n/a | Shadowsocks-SIP002-URL (`ss://...`). In Runtime-APIs wird nur `host:port` offengelegt. |
+| `interface` | `shadowsocks` | `Option<String>` | nein | `null` | Optionales ausgehendes Bind-Interface oder lokale Literal-IP. |
 
 ### Runtime-Regeln (wichtig)
 
@@ -115,6 +117,7 @@ Die unten angegebenen `Default`-Werte sind Code-Defaults (bei fehlendem Schlüss
 8. Im ME-Modus wird der gewählte Upstream auch für den ME-TCP-Dial-Pfad verwendet.
 9. Im ME-Modus ist bei `direct` mit bind/interface die STUN-Reflection bind-aware für KDF-Adressmaterial.
 10. Im ME-Modus werden bei SOCKS-Upstream `BND.ADDR/BND.PORT` für KDF verwendet, wenn gültig/öffentlich und gleiche IP-Familie.
+11. `shadowsocks`-Upstreams erfordern `general.use_middle_proxy = false`. Mit aktiviertem ME-Modus schlägt das Laden der Config sofort fehl.
 
 ## Upstream-Konfigurationsbeispiele
 
@@ -150,7 +153,20 @@ weight = 2
 enabled = true
 ```
 
-### Beispiel 4: Gemischte Upstreams mit Scopes
+### Beispiel 4: Shadowsocks-Upstream
+
+```toml
+[general]
+use_middle_proxy = false
+
+[[upstreams]]
+type = "shadowsocks"
+url = "ss://2022-blake3-aes-256-gcm:BASE64_KEY@198.51.100.50:8388"
+weight = 2
+enabled = true
+```
+
+### Beispiel 5: Gemischte Upstreams mit Scopes
 
 ```toml
 [[upstreams]]

docs/TUNING.en.md

@@ -82,7 +82,7 @@ Defaults below are code defaults (used when a key is omitted), not necessarily v
 
 | Field | Applies to | Type | Required | Default | Meaning |
 |---|---|---|---|---|---|
-| `[[upstreams]].type` | all upstreams | `"direct" \| "socks4" \| "socks5"` | yes | n/a | Upstream transport type. |
+| `[[upstreams]].type` | all upstreams | `"direct" \| "socks4" \| "socks5" \| "shadowsocks"` | yes | n/a | Upstream transport type. |
 | `[[upstreams]].weight` | all upstreams | `u16` | no | `1` | Base weight for weighted-random selection. |
 | `[[upstreams]].enabled` | all upstreams | `bool` | no | `true` | Disabled entries are ignored at startup. |
 | `[[upstreams]].scopes` | all upstreams | `String` | no | `""` | Comma-separated scope tags for request-level routing. |
@@ -95,6 +95,8 @@ Defaults below are code defaults (used when a key is omitted), not necessarily v
 | `interface` | `socks5` | `Option<String>` | no | `null` | Used only for SOCKS server `ip:port` dial path. |
 | `username` | `socks5` | `Option<String>` | no | `null` | SOCKS5 username auth. |
 | `password` | `socks5` | `Option<String>` | no | `null` | SOCKS5 password auth. |
+| `url` | `shadowsocks` | `String` | yes | n/a | Shadowsocks SIP002 URL (`ss://...`). Only `host:port` is exposed in runtime APIs. |
+| `interface` | `shadowsocks` | `Option<String>` | no | `null` | Optional outgoing bind interface or literal local IP. |
 
 ### Runtime rules (important)
 
@@ -115,6 +117,7 @@ Defaults below are code defaults (used when a key is omitted), not necessarily v
 8. In ME mode, the selected upstream is also used for ME TCP dial path.
 9. In ME mode for `direct` upstream with bind/interface, STUN reflection logic is bind-aware for KDF source material.
 10. In ME mode for SOCKS upstream, SOCKS `BND.ADDR/BND.PORT` is used for KDF when it is valid/public for the same family.
+11. `shadowsocks` upstreams require `general.use_middle_proxy = false`. Config load fails fast if ME mode is enabled.
 
 ## Upstream Configuration Examples
 
@@ -150,7 +153,20 @@ weight = 2
 enabled = true
 ```
 
-### Example 4: Mixed upstreams with scopes
+### Example 4: Shadowsocks upstream
+
+```toml
+[general]
+use_middle_proxy = false
+
+[[upstreams]]
+type = "shadowsocks"
+url = "ss://2022-blake3-aes-256-gcm:BASE64_KEY@198.51.100.50:8388"
+weight = 2
+enabled = true
+```
+
+### Example 5: Mixed upstreams with scopes
 
 ```toml
 [[upstreams]]

docs/TUNING.ru.md

@@ -82,7 +82,7 @@
 
 | Поле | Применимость | Тип | Обязательно | Default | Назначение |
 |---|---|---|---|---|---|
-| `[[upstreams]].type` | все upstream | `"direct" \| "socks4" \| "socks5"` | да | n/a | Тип upstream транспорта. |
+| `[[upstreams]].type` | все upstream | `"direct" \| "socks4" \| "socks5" \| "shadowsocks"` | да | n/a | Тип upstream транспорта. |
 | `[[upstreams]].weight` | все upstream | `u16` | нет | `1` | Базовый вес в weighted-random выборе. |
 | `[[upstreams]].enabled` | все upstream | `bool` | нет | `true` | Выключенные записи игнорируются на старте. |
 | `[[upstreams]].scopes` | все upstream | `String` | нет | `""` | Список scope-токенов через запятую для маршрутизации. |
@@ -95,6 +95,8 @@
 | `interface` | `socks5` | `Option<String>` | нет | `null` | Используется только если `address` задан как `ip:port`. |
 | `username` | `socks5` | `Option<String>` | нет | `null` | Логин SOCKS5 auth. |
 | `password` | `socks5` | `Option<String>` | нет | `null` | Пароль SOCKS5 auth. |
+| `url` | `shadowsocks` | `String` | да | n/a | Shadowsocks SIP002 URL (`ss://...`). В runtime API раскрывается только `host:port`. |
+| `interface` | `shadowsocks` | `Option<String>` | нет | `null` | Необязательный исходящий bind-интерфейс или literal локальный IP. |
 
 ### Runtime-правила
 
@@ -115,6 +117,7 @@
 8. В ME-режиме выбранный upstream также используется для ME TCP dial path.
 9. В ME-режиме для `direct` upstream с bind/interface STUN-рефлексия выполняется bind-aware для KDF материала.
 10. В ME-режиме для SOCKS upstream используются `BND.ADDR/BND.PORT` для KDF, если адрес валиден/публичен и соответствует IP family.
+11. `shadowsocks` upstream требует `general.use_middle_proxy = false`. При включенном ME-режиме конфиг отклоняется при загрузке.
 
 ## Примеры конфигурации Upstreams
 
@@ -150,7 +153,20 @@ weight = 2
 enabled = true
 ```
 
-### Пример 4: смешанные upstream с scopes
+### Пример 4: Shadowsocks upstream
+
+```toml
+[general]
+use_middle_proxy = false
+
+[[upstreams]]
+type = "shadowsocks"
+url = "ss://2022-blake3-aes-256-gcm:BASE64_KEY@198.51.100.50:8388"
+weight = 2
+enabled = true
+```
+
+### Пример 5: смешанные upstream с scopes
 
 ```toml
 [[upstreams]]

install.sh

@@ -1,115 +1,525 @@
 #!/bin/sh
 set -eu
 
+# --- Global Configurations ---
 REPO="${REPO:-telemt/telemt}"
 BIN_NAME="${BIN_NAME:-telemt}"
-VERSION="${1:-${VERSION:-latest}}"
-INSTALL_DIR="${INSTALL_DIR:-/usr/local/bin}"
+INSTALL_DIR="${INSTALL_DIR:-/bin}"
+CONFIG_DIR="${CONFIG_DIR:-/etc/telemt}"
+CONFIG_FILE="${CONFIG_FILE:-${CONFIG_DIR}/telemt.toml}"
+WORK_DIR="${WORK_DIR:-/opt/telemt}"
+SERVICE_NAME="telemt"
+TEMP_DIR=""
+SUDO=""
 
-say() {
-    printf '%s\n' "$*"
-}
+# --- Argument Parsing ---
+ACTION="install"
+TARGET_VERSION="${VERSION:-latest}"
 
-die() {
-    printf 'Error: %s\n' "$*" >&2
-    exit 1
-}
-
-need_cmd() {
-    command -v "$1" >/dev/null 2>&1 || die "required command not found: $1"
-}
-
-detect_os() {
-    os="$(uname -s)"
-    case "$os" in
-        Linux) printf 'linux\n' ;;
-        OpenBSD) printf 'openbsd\n' ;;
-        *) printf '%s\n' "$os" ;;
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -h|--help)
+            ACTION="help"
+            shift
+            ;;
+        uninstall|--uninstall)
+            [ "$ACTION" != "purge" ] && ACTION="uninstall"
+            shift
+            ;;
+        --purge)
+            ACTION="purge"
+            shift
+            ;;
+        install|--install)
+            ACTION="install"
+            shift
+            ;;
+        -*)
+            printf '[ERROR] Unknown option: %s\n' "$1" >&2
+            exit 1
+            ;;
+        *)
+            if [ "$ACTION" = "install" ]; then
+                TARGET_VERSION="$1"
+            fi
+            shift
+            ;;
     esac
+done
+
+# --- Core Functions ---
+say() { printf '[INFO] %s\n' "$*"; }
+die() { printf '[ERROR] %s\n' "$*" >&2; exit 1; }
+
+cleanup() {
+    if [ -n "${TEMP_DIR:-}" ] && [ -d "$TEMP_DIR" ]; then
+        rm -rf -- "$TEMP_DIR"
+    fi
+}
+
+trap cleanup EXIT INT TERM
+
+show_help() {
+    say "Usage: $0 [version | install | uninstall | --purge | --help]"
+    say "  version      Install specific version (e.g. 1.0.0, default: latest)"
+    say "  uninstall    Remove the binary and service (keeps config)"
+    say "  --purge      Remove everything including configuration"
+    exit 0
+}
+
+user_exists() {
+    if command -v getent >/dev/null 2>&1; then
+        getent passwd "$1" >/dev/null 2>&1
+    else
+        grep -q "^${1}:" /etc/passwd 2>/dev/null
+    fi
+}
+
+group_exists() {
+    if command -v getent >/dev/null 2>&1; then
+        getent group "$1" >/dev/null 2>&1
+    else
+        grep -q "^${1}:" /etc/group 2>/dev/null
+    fi
+}
+
+verify_common() {
+    [ -z "$BIN_NAME" ] && die "BIN_NAME cannot be empty."
+    [ -z "$INSTALL_DIR" ] && die "INSTALL_DIR cannot be empty."
+    [ -z "$CONFIG_DIR" ] && die "CONFIG_DIR cannot be empty."
+
+    if [ "$(id -u)" -eq 0 ]; then
+        SUDO=""
+    else
+        if ! command -v sudo >/dev/null 2>&1; then
+            die "This script requires root or sudo. Neither found."
+        fi
+        SUDO="sudo"
+        say "sudo is available. Caching credentials..."
+        if ! sudo -v; then
+            die "Failed to cache sudo credentials"
+        fi
+    fi
+
+    case "${INSTALL_DIR}${CONFIG_DIR}${WORK_DIR}" in
+        *[!a-zA-Z0-9_./-]*)
+            die "Invalid characters in path variables. Only alphanumeric, _, ., -, and / are allowed."
+            ;;
+    esac
+
+    case "$BIN_NAME" in
+        *[!a-zA-Z0-9_-]*) die "Invalid characters in BIN_NAME: $BIN_NAME" ;;
+    esac
+
+    for path in "$CONFIG_DIR" "$WORK_DIR"; do
+        check_path="$path"
+
+        while [ "$check_path" != "/" ] && [ "${check_path%"/"}" != "$check_path" ]; do
+            check_path="${check_path%"/"}"
+        done
+        [ -z "$check_path" ] && check_path="/"
+
+        case "$check_path" in
+            /|/bin|/sbin|/usr|/usr/bin|/usr/local|/etc|/opt|/var|/home|/root|/tmp)
+                die "Safety check failed: '$path' is a critical system directory."
+                ;;
+        esac
+    done
+
+    for cmd in uname grep find rm chown chmod mv head mktemp; do
+        command -v "$cmd" >/dev/null 2>&1 || die "Required command not found: $cmd"
+    done
+}
+
+verify_install_deps() {
+    if ! command -v curl >/dev/null 2>&1 && ! command -v wget >/dev/null 2>&1; then
+        die "Neither curl nor wget is installed."
+    fi
+    command -v tar >/dev/null 2>&1 || die "Required command not found: tar"
+    command -v gzip >/dev/null 2>&1 || die "Required command not found: gzip"
+    command -v cp >/dev/null 2>&1 || command -v install >/dev/null 2>&1 || die "Need cp or install"
+
+    if ! command -v setcap >/dev/null 2>&1; then
+        say "setcap is missing. Installing required capability tools..."
+        if command -v apk >/dev/null 2>&1; then
+            $SUDO apk add --no-cache libcap || die "Failed to install libcap"
+        elif command -v apt-get >/dev/null 2>&1; then
+            $SUDO apt-get update -qq && $SUDO apt-get install -y -qq libcap2-bin || die "Failed to install libcap2-bin"
+        elif command -v dnf >/dev/null 2>&1 || command -v yum >/dev/null 2>&1; then
+            $SUDO ${YUM_CMD:-yum} install -y -q libcap || die "Failed to install libcap"
+        else
+            die "Cannot install 'setcap'. Package manager not found. Please install libcap manually."
+        fi
+    fi
 }
 
 detect_arch() {
-    arch="$(uname -m)"
-    case "$arch" in
-        x86_64|amd64) printf 'x86_64\n' ;;
-        aarch64|arm64) printf 'aarch64\n' ;;
-        *) die "unsupported architecture: $arch" ;;
+    sys_arch="$(uname -m)"
+    case "$sys_arch" in
+        x86_64|amd64) echo "x86_64" ;;
+        aarch64|arm64) echo "aarch64" ;;
+        *) die "Unsupported architecture: $sys_arch" ;;
     esac
 }
 
 detect_libc() {
-    case "$(ldd --version 2>&1 || true)" in
-        *musl*) printf 'musl\n' ;;
-        *) printf 'gnu\n' ;;
-    esac
+    if command -v ldd >/dev/null 2>&1 && ldd --version 2>&1 | grep -qi musl; then
+        echo "musl"; return 0
+    fi
+
+    if grep -q '^ID=alpine' /etc/os-release 2>/dev/null || grep -q '^ID="alpine"' /etc/os-release 2>/dev/null; then
+        echo "musl"; return 0
+    fi
+    for f in /lib/ld-musl-*.so.* /lib64/ld-musl-*.so.*; do
+        if [ -e "$f" ]; then
+            echo "musl"; return 0
+        fi
+    done
+    echo "gnu"
 }
 
-fetch_to_stdout() {
-    url="$1"
+fetch_file() {
+    fetch_url="$1"
+    fetch_out="$2"
+
     if command -v curl >/dev/null 2>&1; then
-        curl -fsSL "$url"
+        curl -fsSL "$fetch_url" -o "$fetch_out" || return 1
     elif command -v wget >/dev/null 2>&1; then
-        wget -qO- "$url"
+        wget -qO "$fetch_out" "$fetch_url" || return 1
     else
-        die "neither curl nor wget is installed"
+        die "curl or wget required"
+    fi
+}
+
+ensure_user_group() {
+    nologin_bin="/bin/false"
+
+    cmd_nologin="$(command -v nologin 2>/dev/null || true)"
+    if [ -n "$cmd_nologin" ] && [ -x "$cmd_nologin" ]; then
+        nologin_bin="$cmd_nologin"
+    else
+        for bin in /sbin/nologin /usr/sbin/nologin; do
+            if [ -x "$bin" ]; then
+                nologin_bin="$bin"
+                break
+            fi
+        done
+    fi
+
+    if ! group_exists telemt; then
+        if command -v groupadd >/dev/null 2>&1; then
+            $SUDO groupadd -r telemt || die "Failed to create group via groupadd"
+        elif command -v addgroup >/dev/null 2>&1; then
+            $SUDO addgroup -S telemt || die "Failed to create group via addgroup"
+        else
+            die "Cannot create group: neither groupadd nor addgroup found"
+        fi
+    fi
+
+    if ! user_exists telemt; then
+        if command -v useradd >/dev/null 2>&1; then
+            $SUDO useradd -r -g telemt -d "$WORK_DIR" -s "$nologin_bin" -c "Telemt Proxy" telemt || die "Failed to create user via useradd"
+        elif command -v adduser >/dev/null 2>&1; then
+            $SUDO adduser -S -D -H -h "$WORK_DIR" -s "$nologin_bin" -G telemt telemt || die "Failed to create user via adduser"
+        else
+            die "Cannot create user: neither useradd nor adduser found"
+        fi
+    fi
+}
+
+setup_dirs() {
+    say "Setting up directories..."
+    $SUDO mkdir -p "$WORK_DIR" "$CONFIG_DIR" || die "Failed to create directories"
+    $SUDO chown telemt:telemt "$WORK_DIR" || die "Failed to set owner on WORK_DIR"
+    $SUDO chmod 750 "$WORK_DIR" || die "Failed to set permissions on WORK_DIR"
+}
+
+stop_service() {
+    say "Stopping service if running..."
+    if command -v systemctl >/dev/null 2>&1 && [ -d /run/systemd/system ]; then
+        $SUDO systemctl stop "$SERVICE_NAME" 2>/dev/null || true
+    elif command -v rc-service >/dev/null 2>&1; then
+        $SUDO rc-service "$SERVICE_NAME" stop 2>/dev/null || true
     fi
 }
 
 install_binary() {
-    src="$1"
-    dst="$2"
+    bin_src="$1"
+    bin_dst="$2"
 
-    if [ -w "$INSTALL_DIR" ] || { [ ! -e "$INSTALL_DIR" ] && [ -w "$(dirname "$INSTALL_DIR")" ]; }; then
-        mkdir -p "$INSTALL_DIR"
-        install -m 0755 "$src" "$dst"
-    elif command -v sudo >/dev/null 2>&1; then
-        sudo mkdir -p "$INSTALL_DIR"
-        sudo install -m 0755 "$src" "$dst"
+    $SUDO mkdir -p "$INSTALL_DIR" || die "Failed to create install directory"
+    if command -v install >/dev/null 2>&1; then
+        $SUDO install -m 0755 "$bin_src" "$bin_dst" || die "Failed to install binary"
     else
-        die "cannot write to $INSTALL_DIR and sudo is not available"
+        $SUDO rm -f "$bin_dst"
+        $SUDO cp "$bin_src" "$bin_dst" || die "Failed to copy binary"
+        $SUDO chmod 0755 "$bin_dst" || die "Failed to set permissions"
+    fi
+
+    if [ ! -x "$bin_dst" ]; then
+        die "Failed to install binary or it is not executable: $bin_dst"
+    fi
+
+    say "Granting network bind capabilities to bind port 443..."
+    if ! $SUDO setcap cap_net_bind_service=+ep "$bin_dst" 2>/dev/null; then
+        say "[WARNING] Failed to apply setcap. The service will NOT be able to open port 443!"
+        say "[WARNING] This usually happens inside unprivileged Docker/LXC containers."
     fi
 }
 
-need_cmd uname
-need_cmd tar
-need_cmd mktemp
-need_cmd grep
-need_cmd install
+generate_secret() {
+    if command -v openssl >/dev/null 2>&1; then
+        secret="$(openssl rand -hex 16 2>/dev/null)" && [ -n "$secret" ] && { echo "$secret"; return 0; }
+    fi
+    if command -v xxd >/dev/null 2>&1; then
+        secret="$(dd if=/dev/urandom bs=1 count=16 2>/dev/null | xxd -p | tr -d '\n')" && [ -n "$secret" ] && { echo "$secret"; return 0; }
+    fi
+    secret="$(dd if=/dev/urandom bs=1 count=16 2>/dev/null | od -An -tx1 | tr -d ' \n')" && [ -n "$secret" ] && { echo "$secret"; return 0; }
+    return 1
+}
 
-ARCH="$(detect_arch)"
-OS="$(detect_os)"
+generate_config_content() {
+    cat <<EOF
+[general]
+use_middle_proxy = false
 
-if [ "$OS" != "linux" ]; then
-    case "$OS" in
-        openbsd)
-            die "install.sh installs only Linux release artifacts. On OpenBSD, build from source (see docs/OPENBSD.en.md)."
-            ;;
-        *)
-            die "unsupported operating system for install.sh: $OS"
-            ;;
-    esac
-fi
+[general.modes]
+classic = false
+secure = false
+tls = true
 
-LIBC="$(detect_libc)"
+[server]
+port = 443
 
-case "$VERSION" in
-    latest)
-        URL="https://github.com/$REPO/releases/latest/download/${BIN_NAME}-${ARCH}-linux-${LIBC}.tar.gz"
+[server.api]
+enabled = true
+listen = "127.0.0.1:9091"
+whitelist = ["127.0.0.1/32"]
+
+[censorship]
+tls_domain = "petrovich.ru"
+
+[access.users]
+hello = "$1"
+EOF
+}
+
+install_config() {
+    config_exists=0
+
+    if [ -n "$SUDO" ]; then
+        $SUDO sh -c "[ -f '$CONFIG_FILE' ]" 2>/dev/null && config_exists=1 || true
+    else
+        [ -f "$CONFIG_FILE" ] && config_exists=1 || true
+    fi
+
+    if [ "$config_exists" -eq 1 ]; then
+        say "Config already exists, skipping generation."
+        return 0
+    fi
+
+    toml_secret="$(generate_secret)" || die "Failed to generate secret"
+    say "Creating config at $CONFIG_FILE..."
+
+    tmp_conf="$(mktemp "${TEMP_DIR:-/tmp}/telemt_conf.XXXXXX")" || die "Failed to create temp config"
+    generate_config_content "$toml_secret" > "$tmp_conf" || die "Failed to write temp config"
+
+    $SUDO mv "$tmp_conf" "$CONFIG_FILE" || die "Failed to install config file"
+    $SUDO chown root:telemt "$CONFIG_FILE" || die "Failed to set owner"
+    $SUDO chmod 640 "$CONFIG_FILE" || die "Failed to set config permissions"
+
+    say "Secret for user 'hello': $toml_secret"
+}
+
+generate_systemd_content() {
+    cat <<EOF
+[Unit]
+Description=Telemt Proxy Service
+After=network-online.target
+
+[Service]
+Type=simple
+User=telemt
+Group=telemt
+WorkingDirectory=$WORK_DIR
+ExecStart=${INSTALL_DIR}/${BIN_NAME} ${CONFIG_FILE}
+Restart=on-failure
+LimitNOFILE=65536
+AmbientCapabilities=CAP_NET_BIND_SERVICE
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE
+
+[Install]
+WantedBy=multi-user.target
+EOF
+}
+
+generate_openrc_content() {
+    cat <<EOF
+#!/sbin/openrc-run
+name="$SERVICE_NAME"
+description="Telemt Proxy Service"
+command="${INSTALL_DIR}/${BIN_NAME}"
+command_args="${CONFIG_FILE}"
+command_background=true
+command_user="telemt:telemt"
+pidfile="/run/\${RC_SVCNAME}.pid"
+directory="${WORK_DIR}"
+rc_ulimit="-n 65536"
+depend() { need net; use logger; }
+EOF
+}
+
+install_service() {
+    if command -v systemctl >/dev/null 2>&1 && [ -d /run/systemd/system ]; then
+        say "Installing systemd service..."
+        tmp_svc="$(mktemp "${TEMP_DIR:-/tmp}/${SERVICE_NAME}.service.XXXXXX")" || die "Failed to create temp service"
+        generate_systemd_content > "$tmp_svc" || die "Failed to generate service content"
+
+        $SUDO mv "$tmp_svc" "/etc/systemd/system/${SERVICE_NAME}.service" || die "Failed to move service file"
+        $SUDO chown root:root "/etc/systemd/system/${SERVICE_NAME}.service"
+        $SUDO chmod 644 "/etc/systemd/system/${SERVICE_NAME}.service"
+
+        $SUDO systemctl daemon-reload || die "Failed to reload systemd"
+        $SUDO systemctl enable "$SERVICE_NAME" || die "Failed to enable service"
+        $SUDO systemctl start "$SERVICE_NAME" || die "Failed to start service"
+
+    elif command -v rc-update >/dev/null 2>&1; then
+        say "Installing OpenRC service..."
+        tmp_svc="$(mktemp "${TEMP_DIR:-/tmp}/${SERVICE_NAME}.init.XXXXXX")" || die "Failed to create temp file"
+        generate_openrc_content > "$tmp_svc" || die "Failed to generate init content"
+
+        $SUDO mv "$tmp_svc" "/etc/init.d/${SERVICE_NAME}" || die "Failed to move service file"
+        $SUDO chown root:root "/etc/init.d/${SERVICE_NAME}"
+        $SUDO chmod 0755 "/etc/init.d/${SERVICE_NAME}"
+
+        $SUDO rc-update add "$SERVICE_NAME" default 2>/dev/null || die "Failed to register service"
+        $SUDO rc-service "$SERVICE_NAME" start 2>/dev/null || die "Failed to start OpenRC service"
+    else
+        say "No service manager found. You can start it manually with:"
+        if [ -n "$SUDO" ]; then
+            say "  sudo -u telemt ${INSTALL_DIR}/${BIN_NAME} ${CONFIG_FILE}"
+        else
+            say "  su -s /bin/sh telemt -c '${INSTALL_DIR}/${BIN_NAME} ${CONFIG_FILE}'"
+        fi
+    fi
+}
+
+kill_user_procs() {
+    say "Ensuring $BIN_NAME processes are killed..."
+
+    if pkill_cmd="$(command -v pkill 2>/dev/null)"; then
+        $SUDO "$pkill_cmd" -u telemt "$BIN_NAME" 2>/dev/null || true
+        sleep 1
+        $SUDO "$pkill_cmd" -9 -u telemt "$BIN_NAME" 2>/dev/null || true
+    elif killall_cmd="$(command -v killall 2>/dev/null)"; then
+        $SUDO "$killall_cmd" "$BIN_NAME" 2>/dev/null || true
+        sleep 1
+        $SUDO "$killall_cmd" -9 "$BIN_NAME" 2>/dev/null || true
+    fi
+}
+
+uninstall() {
+    purge_data=0
+    [ "$ACTION" = "purge" ] && purge_data=1
+
+    say "Uninstalling $BIN_NAME..."
+    stop_service
+
+    if command -v systemctl >/dev/null 2>&1 && [ -d /run/systemd/system ]; then
+        $SUDO systemctl disable "$SERVICE_NAME" 2>/dev/null || true
+        $SUDO rm -f "/etc/systemd/system/${SERVICE_NAME}.service"
+        $SUDO systemctl daemon-reload || true
+    elif command -v rc-update >/dev/null 2>&1; then
+        $SUDO rc-update del "$SERVICE_NAME" 2>/dev/null || true
+        $SUDO rm -f "/etc/init.d/${SERVICE_NAME}"
+    fi
+
+    kill_user_procs
+
+    $SUDO rm -f "${INSTALL_DIR}/${BIN_NAME}"
+
+    $SUDO userdel telemt 2>/dev/null || $SUDO deluser telemt 2>/dev/null || true
+    $SUDO groupdel telemt 2>/dev/null || $SUDO delgroup telemt 2>/dev/null || true
+
+    if [ "$purge_data" -eq 1 ]; then
+        say "Purging configuration and data..."
+        $SUDO rm -rf "$CONFIG_DIR" "$WORK_DIR"
+    else
+        say "Note: Configuration in $CONFIG_DIR was kept. Run with '--purge' to remove it."
+    fi
+
+    say "Uninstallation complete."
+    exit 0
+}
+
+# ============================================================================
+# Main Entry Point
+# ============================================================================
+
+case "$ACTION" in
+    help)
+        show_help
         ;;
-    *)
-        URL="https://github.com/$REPO/releases/download/${VERSION}/${BIN_NAME}-${ARCH}-linux-${LIBC}.tar.gz"
+    uninstall|purge)
+        verify_common
+        uninstall
+        ;;
+    install)
+        say "Starting installation..."
+        verify_common
+        verify_install_deps
+
+        ARCH="$(detect_arch)"
+        LIBC="$(detect_libc)"
+        say "Detected system: $ARCH-linux-$LIBC"
+
+        FILE_NAME="${BIN_NAME}-${ARCH}-linux-${LIBC}.tar.gz"
+        FILE_NAME="$(printf '%s' "$FILE_NAME" | tr -d ' \t\n\r')"
+
+        if [ "$TARGET_VERSION" = "latest" ]; then
+            DL_URL="https://github.com/${REPO}/releases/latest/download/${FILE_NAME}"
+        else
+            DL_URL="https://github.com/${REPO}/releases/download/${TARGET_VERSION}/${FILE_NAME}"
+        fi
+
+        TEMP_DIR="$(mktemp -d)" || die "Failed to create temp directory"
+        if [ -z "$TEMP_DIR" ] || [ ! -d "$TEMP_DIR" ]; then
+            die "Temp directory creation failed"
+        fi
+
+        say "Downloading from $DL_URL..."
+        fetch_file "$DL_URL" "${TEMP_DIR}/archive.tar.gz" || die "Download failed (check version or network)"
+
+        gzip -dc "${TEMP_DIR}/archive.tar.gz" | tar -xf - -C "$TEMP_DIR" || die "Extraction failed"
+
+        EXTRACTED_BIN="$(find "$TEMP_DIR" -type f -name "$BIN_NAME" -print 2>/dev/null | head -n 1)"
+        [ -z "$EXTRACTED_BIN" ] && die "Binary '$BIN_NAME' not found in archive"
+
+        ensure_user_group
+        setup_dirs
+        stop_service
+
+        say "Installing binary..."
+        install_binary "$EXTRACTED_BIN" "${INSTALL_DIR}/${BIN_NAME}"
+
+        install_config
+        install_service
+
+        say ""
+        say "============================================="
+        say "Installation complete!"
+        say "============================================="
+        if command -v systemctl >/dev/null 2>&1 && [ -d /run/systemd/system ]; then
+            say "To check the logs, run:"
+            say "  journalctl -u $SERVICE_NAME -f"
+            say ""
+        fi
+        say "To get user connection links, run:"
+        if command -v jq >/dev/null 2>&1; then
+            say "  curl -s http://127.0.0.1:9091/v1/users | jq -r '.data[] | \"User: \\(.username)\\n\\(.links.tls[0] // empty)\"'"
+        else
+            say "  curl -s http://127.0.0.1:9091/v1/users"
+            say "  (Note: Install 'jq' package to see the links nicely formatted)"
+        fi
         ;;
 esac
-
-TMPDIR="$(mktemp -d)"
-trap 'rm -rf "$TMPDIR"' EXIT INT TERM
-
-say "Installing $BIN_NAME ($VERSION) for $ARCH-linux-$LIBC..."
-fetch_to_stdout "$URL" | tar -xzf - -C "$TMPDIR"
-
-[ -f "$TMPDIR/$BIN_NAME" ] || die "archive did not contain $BIN_NAME"
-
-install_binary "$TMPDIR/$BIN_NAME" "$INSTALL_DIR/$BIN_NAME"
-
-say "Installed: $INSTALL_DIR/$BIN_NAME"
-"$INSTALL_DIR/$BIN_NAME" --version 2>/dev/null || true

src/api/model.rs

@@ -134,6 +134,7 @@ pub(super) struct UpstreamSummaryData {
     pub(super) direct_total: usize,
     pub(super) socks4_total: usize,
     pub(super) socks5_total: usize,
+    pub(super) shadowsocks_total: usize,
 }
 
 #[derive(Serialize, Clone)]

src/api/runtime_min.rs

@@ -159,6 +159,7 @@ pub(super) struct RuntimeUpstreamQualitySummaryData {
     pub(super) direct_total: usize,
     pub(super) socks4_total: usize,
     pub(super) socks5_total: usize,
+    pub(super) shadowsocks_total: usize,
 }
 
 #[derive(Serialize)]
@@ -406,7 +407,9 @@ pub(super) async fn build_runtime_upstream_quality_data(
         connect_attempt_total: shared.stats.get_upstream_connect_attempt_total(),
         connect_success_total: shared.stats.get_upstream_connect_success_total(),
         connect_fail_total: shared.stats.get_upstream_connect_fail_total(),
-        connect_failfast_hard_error_total: shared.stats.get_upstream_connect_failfast_hard_error_total(),
+        connect_failfast_hard_error_total: shared
+            .stats
+            .get_upstream_connect_failfast_hard_error_total(),
     };
 
     let Some(snapshot) = shared.upstream_manager.try_api_snapshot() else {
@@ -446,6 +449,7 @@ pub(super) async fn build_runtime_upstream_quality_data(
             direct_total: snapshot.summary.direct_total,
             socks4_total: snapshot.summary.socks4_total,
             socks5_total: snapshot.summary.socks5_total,
+            shadowsocks_total: snapshot.summary.shadowsocks_total,
         }),
         upstreams: Some(
             snapshot
@@ -457,6 +461,7 @@ pub(super) async fn build_runtime_upstream_quality_data(
                         crate::transport::UpstreamRouteKind::Direct => "direct",
                         crate::transport::UpstreamRouteKind::Socks4 => "socks4",
                         crate::transport::UpstreamRouteKind::Socks5 => "socks5",
+                        crate::transport::UpstreamRouteKind::Shadowsocks => "shadowsocks",
                     },
                     address: upstream.address,
                     weight: upstream.weight,
@@ -476,7 +481,9 @@ pub(super) async fn build_runtime_upstream_quality_data(
                                 crate::transport::upstream::IpPreference::PreferV6 => "prefer_v6",
                                 crate::transport::upstream::IpPreference::PreferV4 => "prefer_v4",
                                 crate::transport::upstream::IpPreference::BothWork => "both_work",
-                                crate::transport::upstream::IpPreference::Unavailable => "unavailable",
+                                crate::transport::upstream::IpPreference::Unavailable => {
+                                    "unavailable"
+                                }
                             },
                         })
                         .collect(),
@@ -514,14 +521,18 @@ pub(super) async fn build_runtime_nat_stun_data(shared: &ApiShared) -> RuntimeNa
                 live_total: snapshot.live_servers.len(),
             },
             reflection: RuntimeNatStunReflectionBlockData {
-                v4: snapshot.reflection_v4.map(|entry| RuntimeNatStunReflectionData {
-                    addr: entry.addr.to_string(),
-                    age_secs: entry.age_secs,
-                }),
-                v6: snapshot.reflection_v6.map(|entry| RuntimeNatStunReflectionData {
-                    addr: entry.addr.to_string(),
-                    age_secs: entry.age_secs,
-                }),
+                v4: snapshot
+                    .reflection_v4
+                    .map(|entry| RuntimeNatStunReflectionData {
+                        addr: entry.addr.to_string(),
+                        age_secs: entry.age_secs,
+                    }),
+                v6: snapshot
+                    .reflection_v6
+                    .map(|entry| RuntimeNatStunReflectionData {
+                        addr: entry.addr.to_string(),
+                        age_secs: entry.age_secs,
+                    }),
             },
             stun_backoff_remaining_ms: snapshot.stun_backoff_remaining_ms,
         }),

src/api/runtime_selftest.rs

@@ -1,5 +1,5 @@
-use std::net::IpAddr;
 use std::collections::HashMap;
+use std::net::IpAddr;
 use std::sync::{Mutex, OnceLock};
 use std::time::{SystemTime, UNIX_EPOCH};
 
@@ -7,8 +7,8 @@ use serde::Serialize;
 
 use crate::config::{ProxyConfig, UpstreamType};
 use crate::network::probe::{detect_interface_ipv4, detect_interface_ipv6, is_bogon};
-use crate::transport::middle_proxy::{bnd_snapshot, timeskew_snapshot, upstream_bnd_snapshots};
 use crate::transport::UpstreamRouteKind;
+use crate::transport::middle_proxy::{bnd_snapshot, timeskew_snapshot, upstream_bnd_snapshots};
 
 use super::ApiShared;
 
@@ -262,8 +262,8 @@ fn update_kdf_ewma(now_epoch_secs: u64, total_errors: u64) -> f64 {
     let delta_errors = total_errors.saturating_sub(guard.last_total_errors);
     let instant_rate_per_min = (delta_errors as f64) * 60.0 / (dt_secs as f64);
     let alpha = 1.0 - f64::exp(-(dt_secs as f64) / KDF_EWMA_TAU_SECS);
-    guard.ewma_errors_per_min = guard.ewma_errors_per_min
-        + alpha * (instant_rate_per_min - guard.ewma_errors_per_min);
+    guard.ewma_errors_per_min =
+        guard.ewma_errors_per_min + alpha * (instant_rate_per_min - guard.ewma_errors_per_min);
     guard.last_epoch_secs = now_epoch_secs;
     guard.last_total_errors = total_errors;
     guard.ewma_errors_per_min
@@ -284,6 +284,7 @@ fn map_route_kind(value: UpstreamRouteKind) -> &'static str {
         UpstreamRouteKind::Direct => "direct",
         UpstreamRouteKind::Socks4 => "socks4",
         UpstreamRouteKind::Socks5 => "socks5",
+        UpstreamRouteKind::Shadowsocks => "shadowsocks",
     }
 }
 

src/api/runtime_stats.rs

@@ -2,8 +2,8 @@ use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
 
 use crate::config::ApiConfig;
 use crate::stats::Stats;
-use crate::transport::upstream::IpPreference;
 use crate::transport::UpstreamRouteKind;
+use crate::transport::upstream::IpPreference;
 
 use super::ApiShared;
 use super::model::{
@@ -138,7 +138,8 @@ fn build_zero_upstream_data(stats: &Stats) -> ZeroUpstreamData {
             .get_upstream_connect_duration_success_bucket_501_1000ms(),
         connect_duration_success_bucket_gt_1000ms: stats
             .get_upstream_connect_duration_success_bucket_gt_1000ms(),
-        connect_duration_fail_bucket_le_100ms: stats.get_upstream_connect_duration_fail_bucket_le_100ms(),
+        connect_duration_fail_bucket_le_100ms: stats
+            .get_upstream_connect_duration_fail_bucket_le_100ms(),
         connect_duration_fail_bucket_101_500ms: stats
             .get_upstream_connect_duration_fail_bucket_101_500ms(),
         connect_duration_fail_bucket_501_1000ms: stats
@@ -180,6 +181,7 @@ pub(super) fn build_upstreams_data(shared: &ApiShared, api_cfg: &ApiConfig) -> U
         direct_total: snapshot.summary.direct_total,
         socks4_total: snapshot.summary.socks4_total,
         socks5_total: snapshot.summary.socks5_total,
+        shadowsocks_total: snapshot.summary.shadowsocks_total,
     };
     let upstreams = snapshot
         .upstreams
@@ -395,8 +397,7 @@ async fn get_minimal_payload_cached(
         adaptive_floor_min_writers_multi_endpoint: runtime
             .adaptive_floor_min_writers_multi_endpoint,
         adaptive_floor_recover_grace_secs: runtime.adaptive_floor_recover_grace_secs,
-        adaptive_floor_writers_per_core_total: runtime
-            .adaptive_floor_writers_per_core_total,
+        adaptive_floor_writers_per_core_total: runtime.adaptive_floor_writers_per_core_total,
         adaptive_floor_cpu_cores_override: runtime.adaptive_floor_cpu_cores_override,
         adaptive_floor_max_extra_writers_single_per_core: runtime
             .adaptive_floor_max_extra_writers_single_per_core,
@@ -404,12 +405,9 @@ async fn get_minimal_payload_cached(
             .adaptive_floor_max_extra_writers_multi_per_core,
         adaptive_floor_max_active_writers_per_core: runtime
             .adaptive_floor_max_active_writers_per_core,
-        adaptive_floor_max_warm_writers_per_core: runtime
-            .adaptive_floor_max_warm_writers_per_core,
-        adaptive_floor_max_active_writers_global: runtime
-            .adaptive_floor_max_active_writers_global,
-        adaptive_floor_max_warm_writers_global: runtime
-            .adaptive_floor_max_warm_writers_global,
+        adaptive_floor_max_warm_writers_per_core: runtime.adaptive_floor_max_warm_writers_per_core,
+        adaptive_floor_max_active_writers_global: runtime.adaptive_floor_max_active_writers_global,
+        adaptive_floor_max_warm_writers_global: runtime.adaptive_floor_max_warm_writers_global,
         adaptive_floor_cpu_cores_detected: runtime.adaptive_floor_cpu_cores_detected,
         adaptive_floor_cpu_cores_effective: runtime.adaptive_floor_cpu_cores_effective,
         adaptive_floor_global_cap_raw: runtime.adaptive_floor_global_cap_raw,
@@ -527,6 +525,7 @@ fn map_route_kind(value: UpstreamRouteKind) -> &'static str {
         UpstreamRouteKind::Direct => "direct",
         UpstreamRouteKind::Socks4 => "socks4",
         UpstreamRouteKind::Socks5 => "socks5",
+        UpstreamRouteKind::Shadowsocks => "shadowsocks",
     }
 }
 

src/config/defaults.rs

@@ -36,12 +36,16 @@ const DEFAULT_ME_HEALTH_INTERVAL_MS_UNHEALTHY: u64 = 1000;
 const DEFAULT_ME_HEALTH_INTERVAL_MS_HEALTHY: u64 = 3000;
 const DEFAULT_ME_ADMISSION_POLL_MS: u64 = 1000;
 const DEFAULT_ME_WARN_RATE_LIMIT_MS: u64 = 5000;
+const DEFAULT_ME_ROUTE_HYBRID_MAX_WAIT_MS: u64 = 3000;
+const DEFAULT_ME_ROUTE_BLOCKING_SEND_TIMEOUT_MS: u64 = 250;
+const DEFAULT_ME_C2ME_SEND_TIMEOUT_MS: u64 = 4000;
 const DEFAULT_ME_POOL_DRAIN_SOFT_EVICT_ENABLED: bool = true;
 const DEFAULT_ME_POOL_DRAIN_SOFT_EVICT_GRACE_SECS: u64 = 30;
 const DEFAULT_ME_POOL_DRAIN_SOFT_EVICT_PER_WRITER: u8 = 1;
 const DEFAULT_ME_POOL_DRAIN_SOFT_EVICT_BUDGET_PER_CORE: u16 = 8;
 const DEFAULT_ME_POOL_DRAIN_SOFT_EVICT_COOLDOWN_MS: u64 = 5000;
 const DEFAULT_USER_MAX_UNIQUE_IPS_WINDOW_SECS: u64 = 30;
+const DEFAULT_ACCEPT_PERMIT_TIMEOUT_MS: u64 = 250;
 const DEFAULT_UPSTREAM_CONNECT_RETRY_ATTEMPTS: u32 = 2;
 const DEFAULT_UPSTREAM_UNHEALTHY_FAIL_THRESHOLD: u32 = 5;
 const DEFAULT_UPSTREAM_CONNECT_BUDGET_MS: u64 = 3000;
@@ -156,6 +160,10 @@ pub(crate) fn default_server_max_connections() -> u32 {
     10_000
 }
 
+pub(crate) fn default_accept_permit_timeout_ms() -> u64 {
+    DEFAULT_ACCEPT_PERMIT_TIMEOUT_MS
+}
+
 pub(crate) fn default_prefer_4() -> u8 {
     4
 }
@@ -380,6 +388,18 @@ pub(crate) fn default_me_warn_rate_limit_ms() -> u64 {
     DEFAULT_ME_WARN_RATE_LIMIT_MS
 }
 
+pub(crate) fn default_me_route_hybrid_max_wait_ms() -> u64 {
+    DEFAULT_ME_ROUTE_HYBRID_MAX_WAIT_MS
+}
+
+pub(crate) fn default_me_route_blocking_send_timeout_ms() -> u64 {
+    DEFAULT_ME_ROUTE_BLOCKING_SEND_TIMEOUT_MS
+}
+
+pub(crate) fn default_me_c2me_send_timeout_ms() -> u64 {
+    DEFAULT_ME_C2ME_SEND_TIMEOUT_MS
+}
+
 pub(crate) fn default_upstream_connect_retry_attempts() -> u32 {
     DEFAULT_UPSTREAM_CONNECT_RETRY_ATTEMPTS
 }

src/config/hot_reload.rs

@@ -39,6 +39,7 @@ use super::load::{LoadedConfig, ProxyConfig};
 
 const HOT_RELOAD_STABLE_SNAPSHOTS: u8 = 2;
 const HOT_RELOAD_DEBOUNCE: Duration = Duration::from_millis(50);
+const HOT_RELOAD_STABLE_RECHECK: Duration = Duration::from_millis(75);
 
 // ── Hot fields ────────────────────────────────────────────────────────────────
 
@@ -379,6 +380,14 @@ impl ReloadState {
         self.applied_snapshot_hash = Some(hash);
         self.reset_candidate();
     }
+
+    fn pending_candidate(&self) -> Option<(u64, u8)> {
+        let hash = self.candidate_snapshot_hash?;
+        if self.candidate_hits < HOT_RELOAD_STABLE_SNAPSHOTS {
+            return Some((hash, self.candidate_hits));
+        }
+        None
+    }
 }
 
 fn normalize_watch_path(path: &Path) -> PathBuf {
@@ -603,6 +612,8 @@ fn warn_non_hot_changes(old: &ProxyConfig, new: &ProxyConfig, non_hot_changed: b
         || old.server.listen_tcp != new.server.listen_tcp
         || old.server.listen_unix_sock != new.server.listen_unix_sock
         || old.server.listen_unix_sock_perm != new.server.listen_unix_sock_perm
+        || old.server.max_connections != new.server.max_connections
+        || old.server.accept_permit_timeout_ms != new.server.accept_permit_timeout_ms
     {
         warned = true;
         warn!("config reload: server listener settings changed; restart required");
@@ -662,6 +673,9 @@ fn warn_non_hot_changes(old: &ProxyConfig, new: &ProxyConfig, non_hot_changed: b
     }
     if old.general.me_route_no_writer_mode != new.general.me_route_no_writer_mode
         || old.general.me_route_no_writer_wait_ms != new.general.me_route_no_writer_wait_ms
+        || old.general.me_route_hybrid_max_wait_ms != new.general.me_route_hybrid_max_wait_ms
+        || old.general.me_route_blocking_send_timeout_ms
+            != new.general.me_route_blocking_send_timeout_ms
         || old.general.me_route_inline_recovery_attempts
             != new.general.me_route_inline_recovery_attempts
         || old.general.me_route_inline_recovery_wait_ms
@@ -670,6 +684,10 @@ fn warn_non_hot_changes(old: &ProxyConfig, new: &ProxyConfig, non_hot_changed: b
         warned = true;
         warn!("config reload: general.me_route_no_writer_* changed; restart required");
     }
+    if old.general.me_c2me_send_timeout_ms != new.general.me_c2me_send_timeout_ms {
+        warned = true;
+        warn!("config reload: general.me_c2me_send_timeout_ms changed; restart required");
+    }
     if old.general.unknown_dc_log_path != new.general.unknown_dc_log_path
         || old.general.unknown_dc_file_log_enabled != new.general.unknown_dc_file_log_enabled
     {
@@ -1253,6 +1271,73 @@ fn reload_config(
     Some(next_manifest)
 }
 
+async fn reload_with_internal_stable_rechecks(
+    config_path: &PathBuf,
+    config_tx: &watch::Sender<Arc<ProxyConfig>>,
+    log_tx: &watch::Sender<LogLevel>,
+    detected_ip_v4: Option<IpAddr>,
+    detected_ip_v6: Option<IpAddr>,
+    reload_state: &mut ReloadState,
+) -> Option<WatchManifest> {
+    let mut next_manifest = reload_config(
+        config_path,
+        config_tx,
+        log_tx,
+        detected_ip_v4,
+        detected_ip_v6,
+        reload_state,
+    );
+    let mut rechecks_left = HOT_RELOAD_STABLE_SNAPSHOTS.saturating_sub(1);
+
+    while rechecks_left > 0 {
+        let Some((snapshot_hash, candidate_hits)) = reload_state.pending_candidate() else {
+            break;
+        };
+
+        info!(
+            snapshot_hash,
+            candidate_hits,
+            required_hits = HOT_RELOAD_STABLE_SNAPSHOTS,
+            rechecks_left,
+            recheck_delay_ms = HOT_RELOAD_STABLE_RECHECK.as_millis(),
+            "config reload: scheduling internal stable recheck"
+        );
+        tokio::time::sleep(HOT_RELOAD_STABLE_RECHECK).await;
+
+        let recheck_manifest = reload_config(
+            config_path,
+            config_tx,
+            log_tx,
+            detected_ip_v4,
+            detected_ip_v6,
+            reload_state,
+        );
+        if recheck_manifest.is_some() {
+            next_manifest = recheck_manifest;
+        }
+
+        if reload_state.is_applied(snapshot_hash) {
+            info!(
+                snapshot_hash,
+                "config reload: applied after internal stable recheck"
+            );
+            break;
+        }
+
+        if reload_state.pending_candidate().is_none() {
+            info!(
+                snapshot_hash,
+                "config reload: internal stable recheck aborted"
+            );
+            break;
+        }
+
+        rechecks_left = rechecks_left.saturating_sub(1);
+    }
+
+    next_manifest
+}
+
 // ── Public API ────────────────────────────────────────────────────────────────
 
 /// Spawn the hot-reload watcher task.
@@ -1376,14 +1461,16 @@ pub fn spawn_config_watcher(
             tokio::time::sleep(HOT_RELOAD_DEBOUNCE).await;
             while notify_rx.try_recv().is_ok() {}
 
-            if let Some(next_manifest) = reload_config(
+            if let Some(next_manifest) = reload_with_internal_stable_rechecks(
                 &config_path,
                 &config_tx,
                 &log_tx,
                 detected_ip_v4,
                 detected_ip_v6,
                 &mut reload_state,
-            ) {
+            )
+            .await
+            {
                 apply_watch_manifest(
                     inotify_watcher.as_mut(),
                     poll_watcher.as_mut(),
@@ -1540,6 +1627,35 @@ mod tests {
         let _ = std::fs::remove_file(path);
     }
 
+    #[tokio::test]
+    async fn reload_cycle_applies_after_single_external_event() {
+        let initial_tag = "10101010101010101010101010101010";
+        let final_tag = "20202020202020202020202020202020";
+        let path = temp_config_path("telemt_hot_reload_single_event");
+
+        write_reload_config(&path, Some(initial_tag), None);
+        let initial_cfg = Arc::new(ProxyConfig::load(&path).unwrap());
+        let initial_hash = ProxyConfig::load_with_metadata(&path).unwrap().rendered_hash;
+        let (config_tx, _config_rx) = watch::channel(initial_cfg.clone());
+        let (log_tx, _log_rx) = watch::channel(initial_cfg.general.log_level.clone());
+        let mut reload_state = ReloadState::new(Some(initial_hash));
+
+        write_reload_config(&path, Some(final_tag), None);
+        reload_with_internal_stable_rechecks(
+            &path,
+            &config_tx,
+            &log_tx,
+            None,
+            None,
+            &mut reload_state,
+        )
+        .await
+        .unwrap();
+
+        assert_eq!(config_tx.borrow().general.ad_tag.as_deref(), Some(final_tag));
+        let _ = std::fs::remove_file(path);
+    }
+
     #[test]
     fn reload_keeps_hot_apply_when_non_hot_fields_change() {
         let initial_tag = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";

src/config/load.rs

@@ -6,8 +6,9 @@ use std::net::{IpAddr, SocketAddr};
 use std::path::{Path, PathBuf};
 
 use rand::Rng;
+use serde::{Deserialize, Serialize};
+use shadowsocks::config::ServerConfig as ShadowsocksServerConfig;
 use tracing::warn;
-use serde::{Serialize, Deserialize};
 
 use crate::error::{ProxyError, Result};
 
@@ -122,13 +123,37 @@ fn sanitize_ad_tag(ad_tag: &mut Option<String>) {
     };
 
     if !is_valid_ad_tag(tag) {
-        warn!(
-            "Invalid general.ad_tag value, expected exactly 32 hex chars; ad_tag is disabled"
-        );
+        warn!("Invalid general.ad_tag value, expected exactly 32 hex chars; ad_tag is disabled");
         *ad_tag = None;
     }
 }
 
+fn validate_upstreams(config: &ProxyConfig) -> Result<()> {
+    let has_enabled_shadowsocks = config.upstreams.iter().any(|upstream| {
+        upstream.enabled && matches!(upstream.upstream_type, UpstreamType::Shadowsocks { .. })
+    });
+
+    if has_enabled_shadowsocks && config.general.use_middle_proxy {
+        return Err(ProxyError::Config(
+            "shadowsocks upstreams require general.use_middle_proxy = false".to_string(),
+        ));
+    }
+
+    for upstream in &config.upstreams {
+        if let UpstreamType::Shadowsocks { url, .. } = &upstream.upstream_type {
+            let parsed = ShadowsocksServerConfig::from_url(url)
+                .map_err(|error| ProxyError::Config(format!("invalid shadowsocks url: {error}")))?;
+            if parsed.plugin().is_some() {
+                return Err(ProxyError::Config(
+                    "shadowsocks plugins are not supported".to_string(),
+                ));
+            }
+        }
+    }
+
+    Ok(())
+}
+
 // ============= Main Config =============
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
@@ -180,7 +205,8 @@ impl ProxyConfig {
 
     pub(crate) fn load_with_metadata<P: AsRef<Path>>(path: P) -> Result<LoadedConfig> {
         let path = path.as_ref();
-        let content = std::fs::read_to_string(path).map_err(|e| ProxyError::Config(e.to_string()))?;
+        let content =
+            std::fs::read_to_string(path).map_err(|e| ProxyError::Config(e.to_string()))?;
         let base_dir = path.parent().unwrap_or(Path::new("."));
         let mut source_files = BTreeSet::new();
         source_files.insert(normalize_config_path(path));
@@ -207,15 +233,17 @@ impl ProxyConfig {
             .map(|table| table.contains_key("stun_servers"))
             .unwrap_or(false);
 
-        let mut config: ProxyConfig =
-            parsed_toml.try_into().map_err(|e| ProxyError::Config(e.to_string()))?;
+        let mut config: ProxyConfig = parsed_toml
+            .try_into()
+            .map_err(|e| ProxyError::Config(e.to_string()))?;
 
         if !update_every_is_explicit && (legacy_secret_is_explicit || legacy_config_is_explicit) {
             config.general.update_every = None;
         }
 
         let legacy_nat_stun = config.general.middle_proxy_nat_stun.take();
-        let legacy_nat_stun_servers = std::mem::take(&mut config.general.middle_proxy_nat_stun_servers);
+        let legacy_nat_stun_servers =
+            std::mem::take(&mut config.general.middle_proxy_nat_stun_servers);
         let legacy_nat_stun_used = legacy_nat_stun.is_some() || !legacy_nat_stun_servers.is_empty();
         if stun_servers_is_explicit {
             let mut explicit_stun_servers = Vec::new();
@@ -225,7 +253,9 @@ impl ProxyConfig {
             config.network.stun_servers = explicit_stun_servers;
 
             if legacy_nat_stun_used {
-                warn!("general.middle_proxy_nat_stun and general.middle_proxy_nat_stun_servers are ignored because network.stun_servers is explicitly set");
+                warn!(
+                    "general.middle_proxy_nat_stun and general.middle_proxy_nat_stun_servers are ignored because network.stun_servers is explicitly set"
+                );
             }
         } else {
             // Keep the default STUN pool unless network.stun_servers is explicitly overridden.
@@ -240,7 +270,9 @@ impl ProxyConfig {
             config.network.stun_servers = unified_stun_servers;
 
             if legacy_nat_stun_used {
-                warn!("general.middle_proxy_nat_stun and general.middle_proxy_nat_stun_servers are deprecated; use network.stun_servers");
+                warn!(
+                    "general.middle_proxy_nat_stun and general.middle_proxy_nat_stun_servers are deprecated; use network.stun_servers"
+                );
             }
         }
 
@@ -346,6 +378,12 @@ impl ProxyConfig {
             ));
         }
 
+        if config.general.me_c2me_send_timeout_ms > 60_000 {
+            return Err(ProxyError::Config(
+                "general.me_c2me_send_timeout_ms must be within [0, 60000]".to_string(),
+            ));
+        }
+
         if config.general.me_reader_route_data_wait_ms > 20 {
             return Err(ProxyError::Config(
                 "general.me_reader_route_data_wait_ms must be within [0, 20]".to_string(),
@@ -372,13 +410,15 @@ impl ProxyConfig {
 
         if !(4096..=1024 * 1024).contains(&config.general.direct_relay_copy_buf_c2s_bytes) {
             return Err(ProxyError::Config(
-                "general.direct_relay_copy_buf_c2s_bytes must be within [4096, 1048576]".to_string(),
+                "general.direct_relay_copy_buf_c2s_bytes must be within [4096, 1048576]"
+                    .to_string(),
             ));
         }
 
         if !(8192..=2 * 1024 * 1024).contains(&config.general.direct_relay_copy_buf_s2c_bytes) {
             return Err(ProxyError::Config(
-                "general.direct_relay_copy_buf_s2c_bytes must be within [8192, 2097152]".to_string(),
+                "general.direct_relay_copy_buf_s2c_bytes must be within [8192, 2097152]"
+                    .to_string(),
             ));
         }
 
@@ -617,7 +657,8 @@ impl ProxyConfig {
 
         if !(1..=100).contains(&config.general.me_route_backpressure_high_watermark_pct) {
             return Err(ProxyError::Config(
-                "general.me_route_backpressure_high_watermark_pct must be within [1, 100]".to_string(),
+                "general.me_route_backpressure_high_watermark_pct must be within [1, 100]"
+                    .to_string(),
             ));
         }
 
@@ -627,6 +668,18 @@ impl ProxyConfig {
             ));
         }
 
+        if !(50..=60_000).contains(&config.general.me_route_hybrid_max_wait_ms) {
+            return Err(ProxyError::Config(
+                "general.me_route_hybrid_max_wait_ms must be within [50, 60000]".to_string(),
+            ));
+        }
+
+        if config.general.me_route_blocking_send_timeout_ms > 5000 {
+            return Err(ProxyError::Config(
+                "general.me_route_blocking_send_timeout_ms must be within [0, 5000]".to_string(),
+            ));
+        }
+
         if !(2..=4).contains(&config.general.me_writer_pick_sample_size) {
             return Err(ProxyError::Config(
                 "general.me_writer_pick_sample_size must be within [2, 4]".to_string(),
@@ -687,6 +740,12 @@ impl ProxyConfig {
             ));
         }
 
+        if config.server.accept_permit_timeout_ms > 60_000 {
+            return Err(ProxyError::Config(
+                "server.accept_permit_timeout_ms must be within [0, 60000]".to_string(),
+            ));
+        }
+
         if config.general.effective_me_pool_force_close_secs() > 0
             && config.general.effective_me_pool_force_close_secs()
                 < config.general.me_pool_drain_ttl_secs
@@ -779,11 +838,15 @@ impl ProxyConfig {
         crate::network::dns_overrides::validate_entries(&config.network.dns_overrides)?;
 
         if config.general.use_middle_proxy && config.network.ipv6 == Some(true) {
-            warn!("IPv6 with Middle Proxy is experimental and may cause KDF address mismatch; consider disabling IPv6 or ME");
+            warn!(
+                "IPv6 with Middle Proxy is experimental and may cause KDF address mismatch; consider disabling IPv6 or ME"
+            );
         }
 
         // Random fake_cert_len only when default is in use.
-        if !config.censorship.tls_emulation && config.censorship.fake_cert_len == default_fake_cert_len() {
+        if !config.censorship.tls_emulation
+            && config.censorship.fake_cert_len == default_fake_cert_len()
+        {
             config.censorship.fake_cert_len = rand::rng().gen_range(1024..4096);
         }
 
@@ -793,8 +856,7 @@ impl ProxyConfig {
         let listen_tcp = config.server.listen_tcp.unwrap_or_else(|| {
             if config.server.listen_unix_sock.is_some() {
                 // Unix socket present: TCP only if user explicitly set addresses or listeners.
-                config.server.listen_addr_ipv4.is_some()
-                    || !config.server.listeners.is_empty()
+                config.server.listen_addr_ipv4.is_some() || !config.server.listeners.is_empty()
             } else {
                 true
             }
@@ -802,7 +864,9 @@ impl ProxyConfig {
 
         // Migration: Populate listeners if empty (skip when listen_tcp = false).
         if config.server.listeners.is_empty() && listen_tcp {
-            let ipv4_str = config.server.listen_addr_ipv4
+            let ipv4_str = config
+                .server
+                .listen_addr_ipv4
                 .as_deref()
                 .unwrap_or("0.0.0.0");
             if let Ok(ipv4) = ipv4_str.parse::<IpAddr>() {
@@ -844,7 +908,10 @@ impl ProxyConfig {
         // Migration: Populate upstreams if empty (Default Direct).
         if config.upstreams.is_empty() {
             config.upstreams.push(UpstreamConfig {
-                upstream_type: UpstreamType::Direct { interface: None, bind_addresses: None },
+                upstream_type: UpstreamType::Direct {
+                    interface: None,
+                    bind_addresses: None,
+                },
                 weight: 1,
                 enabled: true,
                 scopes: String::new(),
@@ -858,6 +925,8 @@ impl ProxyConfig {
             .entry("203".to_string())
             .or_insert_with(|| vec!["91.105.192.100:443".to_string()]);
 
+        validate_upstreams(&config)?;
+
         Ok(LoadedConfig {
             config,
             source_files: source_files.into_iter().collect(),
@@ -904,6 +973,9 @@ impl ProxyConfig {
 mod tests {
     use super::*;
 
+    const TEST_SHADOWSOCKS_URL: &str =
+        "ss://2022-blake3-aes-256-gcm:MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDE=@127.0.0.1:8388";
+
     #[test]
     fn serde_defaults_remain_unchanged_for_present_sections() {
         let toml = r#"
@@ -933,10 +1005,7 @@ mod tests {
             cfg.general.me_init_retry_attempts,
             default_me_init_retry_attempts()
         );
-        assert_eq!(
-            cfg.general.me2dc_fallback,
-            default_me2dc_fallback()
-        );
+        assert_eq!(cfg.general.me2dc_fallback, default_me2dc_fallback());
         assert_eq!(
             cfg.general.proxy_config_v4_cache_path,
             default_proxy_config_v4_cache_path()
@@ -1245,11 +1314,12 @@ mod tests {
         let path = dir.join("telemt_dc_override_test.toml");
         std::fs::write(&path, toml).unwrap();
         let cfg = ProxyConfig::load(&path).unwrap();
-        assert!(cfg
-            .dc_overrides
-            .get("203")
-            .map(|v| v.contains(&"91.105.192.100:443".to_string()))
-            .unwrap_or(false));
+        assert!(
+            cfg.dc_overrides
+                .get("203")
+                .map(|v| v.contains(&"91.105.192.100:443".to_string()))
+                .unwrap_or(false)
+        );
         let _ = std::fs::remove_file(path);
     }
 
@@ -1436,11 +1506,9 @@ mod tests {
         let path = dir.join("telemt_me_adaptive_floor_min_writers_out_of_range_test.toml");
         std::fs::write(&path, toml).unwrap();
         let err = ProxyConfig::load(&path).unwrap_err().to_string();
-        assert!(
-            err.contains(
-                "general.me_adaptive_floor_min_writers_single_endpoint must be within [1, 32]"
-            )
-        );
+        assert!(err.contains(
+            "general.me_adaptive_floor_min_writers_single_endpoint must be within [1, 32]"
+        ));
         let _ = std::fs::remove_file(path);
     }
 
@@ -2026,6 +2094,124 @@ mod tests {
         let _ = std::fs::remove_file(path);
     }
 
+    #[test]
+    fn shadowsocks_upstream_url_loads_successfully() {
+        let toml = format!(
+            r#"
+            [general]
+            use_middle_proxy = false
+
+            [censorship]
+            tls_domain = "example.com"
+
+            [access.users]
+            user = "00000000000000000000000000000000"
+
+            [[upstreams]]
+            type = "shadowsocks"
+            url = "{url}"
+            interface = "127.0.0.2"
+            "#,
+            url = TEST_SHADOWSOCKS_URL,
+        );
+        let dir = std::env::temp_dir();
+        let path = dir.join("telemt_shadowsocks_valid_test.toml");
+        std::fs::write(&path, toml).unwrap();
+        let cfg = ProxyConfig::load(&path).unwrap();
+
+        assert!(matches!(
+            &cfg.upstreams[0].upstream_type,
+            UpstreamType::Shadowsocks { url, interface }
+                if url == TEST_SHADOWSOCKS_URL && interface.as_deref() == Some("127.0.0.2")
+        ));
+
+        let _ = std::fs::remove_file(path);
+    }
+
+    #[test]
+    fn shadowsocks_requires_direct_mode() {
+        let toml = format!(
+            r#"
+            [general]
+            use_middle_proxy = true
+
+            [censorship]
+            tls_domain = "example.com"
+
+            [access.users]
+            user = "00000000000000000000000000000000"
+
+            [[upstreams]]
+            type = "shadowsocks"
+            url = "{url}"
+            "#,
+            url = TEST_SHADOWSOCKS_URL,
+        );
+        let dir = std::env::temp_dir();
+        let path = dir.join("telemt_shadowsocks_me_reject_test.toml");
+        std::fs::write(&path, toml).unwrap();
+        let err = ProxyConfig::load(&path).unwrap_err().to_string();
+
+        assert!(err.contains("shadowsocks upstreams require general.use_middle_proxy = false"));
+
+        let _ = std::fs::remove_file(path);
+    }
+
+    #[test]
+    fn invalid_shadowsocks_url_is_rejected() {
+        let toml = r#"
+            [general]
+            use_middle_proxy = false
+
+            [censorship]
+            tls_domain = "example.com"
+
+            [access.users]
+            user = "00000000000000000000000000000000"
+
+            [[upstreams]]
+            type = "shadowsocks"
+            url = "not-a-valid-ss-url"
+        "#;
+        let dir = std::env::temp_dir();
+        let path = dir.join("telemt_shadowsocks_invalid_url_test.toml");
+        std::fs::write(&path, toml).unwrap();
+        let err = ProxyConfig::load(&path).unwrap_err().to_string();
+
+        assert!(err.contains("invalid shadowsocks url"));
+
+        let _ = std::fs::remove_file(path);
+    }
+
+    #[test]
+    fn shadowsocks_plugins_are_rejected() {
+        let toml = format!(
+            r#"
+            [general]
+            use_middle_proxy = false
+
+            [censorship]
+            tls_domain = "example.com"
+
+            [access.users]
+            user = "00000000000000000000000000000000"
+
+            [[upstreams]]
+            type = "shadowsocks"
+            url = "{url}?plugin=obfs-local%3Bobfs%3Dhttp"
+            "#,
+            url = TEST_SHADOWSOCKS_URL,
+        );
+        let dir = std::env::temp_dir();
+        let path = dir.join("telemt_shadowsocks_plugin_reject_test.toml");
+        std::fs::write(&path, toml).unwrap();
+        let err = ProxyConfig::load(&path).unwrap_err().to_string();
+
+        assert!(err.contains("shadowsocks plugins are not supported"));
+
+        let _ = std::fs::remove_file(path);
+    }
+
     #[test]
     fn invalid_user_ad_tag_reports_access_user_ad_tags_key() {
         let toml = r#"

src/config/types.rs

@@ -462,6 +462,11 @@ pub struct GeneralConfig {
     #[serde(default = "default_me_c2me_channel_capacity")]
     pub me_c2me_channel_capacity: usize,
 
+    /// Maximum wait in milliseconds for enqueueing C2ME commands when the queue is full.
+    /// `0` keeps legacy unbounded wait behavior.
+    #[serde(default = "default_me_c2me_send_timeout_ms")]
+    pub me_c2me_send_timeout_ms: u64,
+
     /// Bounded wait in milliseconds for routing ME DATA to per-connection queue.
     /// `0` keeps legacy no-wait behavior.
     #[serde(default = "default_me_reader_route_data_wait_ms")]
@@ -716,6 +721,15 @@ pub struct GeneralConfig {
     #[serde(default = "default_me_route_no_writer_wait_ms")]
     pub me_route_no_writer_wait_ms: u64,
 
+    /// Maximum cumulative wait in milliseconds for hybrid no-writer mode before failfast.
+    #[serde(default = "default_me_route_hybrid_max_wait_ms")]
+    pub me_route_hybrid_max_wait_ms: u64,
+
+    /// Maximum wait in milliseconds for blocking ME writer channel send fallback.
+    /// `0` keeps legacy unbounded wait behavior.
+    #[serde(default = "default_me_route_blocking_send_timeout_ms")]
+    pub me_route_blocking_send_timeout_ms: u64,
+
     /// Number of inline recovery attempts in legacy mode.
     #[serde(default = "default_me_route_inline_recovery_attempts")]
     pub me_route_inline_recovery_attempts: u32,
@@ -921,6 +935,7 @@ impl Default for GeneralConfig {
             me_writer_cmd_channel_capacity: default_me_writer_cmd_channel_capacity(),
             me_route_channel_capacity: default_me_route_channel_capacity(),
             me_c2me_channel_capacity: default_me_c2me_channel_capacity(),
+            me_c2me_send_timeout_ms: default_me_c2me_send_timeout_ms(),
             me_reader_route_data_wait_ms: default_me_reader_route_data_wait_ms(),
             me_d2c_flush_batch_max_frames: default_me_d2c_flush_batch_max_frames(),
             me_d2c_flush_batch_max_bytes: default_me_d2c_flush_batch_max_bytes(),
@@ -936,24 +951,38 @@ impl Default for GeneralConfig {
             me_reconnect_backoff_cap_ms: default_reconnect_backoff_cap_ms(),
             me_reconnect_fast_retry_count: default_me_reconnect_fast_retry_count(),
             me_single_endpoint_shadow_writers: default_me_single_endpoint_shadow_writers(),
-            me_single_endpoint_outage_mode_enabled: default_me_single_endpoint_outage_mode_enabled(),
-            me_single_endpoint_outage_disable_quarantine: default_me_single_endpoint_outage_disable_quarantine(),
-            me_single_endpoint_outage_backoff_min_ms: default_me_single_endpoint_outage_backoff_min_ms(),
-            me_single_endpoint_outage_backoff_max_ms: default_me_single_endpoint_outage_backoff_max_ms(),
-            me_single_endpoint_shadow_rotate_every_secs: default_me_single_endpoint_shadow_rotate_every_secs(),
+            me_single_endpoint_outage_mode_enabled: default_me_single_endpoint_outage_mode_enabled(
+            ),
+            me_single_endpoint_outage_disable_quarantine:
+                default_me_single_endpoint_outage_disable_quarantine(),
+            me_single_endpoint_outage_backoff_min_ms:
+                default_me_single_endpoint_outage_backoff_min_ms(),
+            me_single_endpoint_outage_backoff_max_ms:
+                default_me_single_endpoint_outage_backoff_max_ms(),
+            me_single_endpoint_shadow_rotate_every_secs:
+                default_me_single_endpoint_shadow_rotate_every_secs(),
             me_floor_mode: MeFloorMode::default(),
             me_adaptive_floor_idle_secs: default_me_adaptive_floor_idle_secs(),
-            me_adaptive_floor_min_writers_single_endpoint: default_me_adaptive_floor_min_writers_single_endpoint(),
-            me_adaptive_floor_min_writers_multi_endpoint: default_me_adaptive_floor_min_writers_multi_endpoint(),
+            me_adaptive_floor_min_writers_single_endpoint:
+                default_me_adaptive_floor_min_writers_single_endpoint(),
+            me_adaptive_floor_min_writers_multi_endpoint:
+                default_me_adaptive_floor_min_writers_multi_endpoint(),
             me_adaptive_floor_recover_grace_secs: default_me_adaptive_floor_recover_grace_secs(),
-            me_adaptive_floor_writers_per_core_total: default_me_adaptive_floor_writers_per_core_total(),
+            me_adaptive_floor_writers_per_core_total:
+                default_me_adaptive_floor_writers_per_core_total(),
             me_adaptive_floor_cpu_cores_override: default_me_adaptive_floor_cpu_cores_override(),
-            me_adaptive_floor_max_extra_writers_single_per_core: default_me_adaptive_floor_max_extra_writers_single_per_core(),
-            me_adaptive_floor_max_extra_writers_multi_per_core: default_me_adaptive_floor_max_extra_writers_multi_per_core(),
-            me_adaptive_floor_max_active_writers_per_core: default_me_adaptive_floor_max_active_writers_per_core(),
-            me_adaptive_floor_max_warm_writers_per_core: default_me_adaptive_floor_max_warm_writers_per_core(),
-            me_adaptive_floor_max_active_writers_global: default_me_adaptive_floor_max_active_writers_global(),
-            me_adaptive_floor_max_warm_writers_global: default_me_adaptive_floor_max_warm_writers_global(),
+            me_adaptive_floor_max_extra_writers_single_per_core:
+                default_me_adaptive_floor_max_extra_writers_single_per_core(),
+            me_adaptive_floor_max_extra_writers_multi_per_core:
+                default_me_adaptive_floor_max_extra_writers_multi_per_core(),
+            me_adaptive_floor_max_active_writers_per_core:
+                default_me_adaptive_floor_max_active_writers_per_core(),
+            me_adaptive_floor_max_warm_writers_per_core:
+                default_me_adaptive_floor_max_warm_writers_per_core(),
+            me_adaptive_floor_max_active_writers_global:
+                default_me_adaptive_floor_max_active_writers_global(),
+            me_adaptive_floor_max_warm_writers_global:
+                default_me_adaptive_floor_max_warm_writers_global(),
             upstream_connect_retry_attempts: default_upstream_connect_retry_attempts(),
             upstream_connect_retry_backoff_ms: default_upstream_connect_retry_backoff_ms(),
             upstream_connect_budget_ms: default_upstream_connect_budget_ms(),
@@ -968,13 +997,16 @@ impl Default for GeneralConfig {
             me_socks_kdf_policy: MeSocksKdfPolicy::Strict,
             me_route_backpressure_base_timeout_ms: default_me_route_backpressure_base_timeout_ms(),
             me_route_backpressure_high_timeout_ms: default_me_route_backpressure_high_timeout_ms(),
-            me_route_backpressure_high_watermark_pct: default_me_route_backpressure_high_watermark_pct(),
+            me_route_backpressure_high_watermark_pct:
+                default_me_route_backpressure_high_watermark_pct(),
             me_health_interval_ms_unhealthy: default_me_health_interval_ms_unhealthy(),
             me_health_interval_ms_healthy: default_me_health_interval_ms_healthy(),
             me_admission_poll_ms: default_me_admission_poll_ms(),
             me_warn_rate_limit_ms: default_me_warn_rate_limit_ms(),
             me_route_no_writer_mode: MeRouteNoWriterMode::default(),
             me_route_no_writer_wait_ms: default_me_route_no_writer_wait_ms(),
+            me_route_hybrid_max_wait_ms: default_me_route_hybrid_max_wait_ms(),
+            me_route_blocking_send_timeout_ms: default_me_route_blocking_send_timeout_ms(),
             me_route_inline_recovery_attempts: default_me_route_inline_recovery_attempts(),
             me_route_inline_recovery_wait_ms: default_me_route_inline_recovery_wait_ms(),
             links: LinksConfig::default(),
@@ -992,7 +1024,8 @@ impl Default for GeneralConfig {
             me_hardswap_warmup_delay_min_ms: default_me_hardswap_warmup_delay_min_ms(),
             me_hardswap_warmup_delay_max_ms: default_me_hardswap_warmup_delay_max_ms(),
             me_hardswap_warmup_extra_passes: default_me_hardswap_warmup_extra_passes(),
-            me_hardswap_warmup_pass_backoff_base_ms: default_me_hardswap_warmup_pass_backoff_base_ms(),
+            me_hardswap_warmup_pass_backoff_base_ms:
+                default_me_hardswap_warmup_pass_backoff_base_ms(),
             me_config_stable_snapshots: default_me_config_stable_snapshots(),
             me_config_apply_cooldown_secs: default_me_config_apply_cooldown_secs(),
             me_snapshot_require_http_2xx: default_me_snapshot_require_http_2xx(),
@@ -1035,8 +1068,10 @@ impl GeneralConfig {
     /// Resolve the active updater interval for ME infrastructure refresh tasks.
     /// `update_every` has priority, otherwise legacy proxy_*_auto_reload_secs are used.
     pub fn effective_update_every_secs(&self) -> u64 {
-        self.update_every
-            .unwrap_or_else(|| self.proxy_secret_auto_reload_secs.min(self.proxy_config_auto_reload_secs))
+        self.update_every.unwrap_or_else(|| {
+            self.proxy_secret_auto_reload_secs
+                .min(self.proxy_config_auto_reload_secs)
+        })
     }
 
     /// Resolve periodic zero-downtime reinit interval for ME writers.
@@ -1207,6 +1242,11 @@ pub struct ServerConfig {
     /// 0 means unlimited.
     #[serde(default = "default_server_max_connections")]
     pub max_connections: u32,
+
+    /// Maximum wait in milliseconds while acquiring a connection slot permit.
+    /// `0` keeps legacy unbounded wait behavior.
+    #[serde(default = "default_accept_permit_timeout_ms")]
+    pub accept_permit_timeout_ms: u64,
 }
 
 impl Default for ServerConfig {
@@ -1226,6 +1266,7 @@ impl Default for ServerConfig {
             api: ApiConfig::default(),
             listeners: Vec::new(),
             max_connections: default_server_max_connections(),
+            accept_permit_timeout_ms: default_accept_permit_timeout_ms(),
         }
     }
 }
@@ -1437,6 +1478,11 @@ pub enum UpstreamType {
         #[serde(default)]
         password: Option<String>,
     },
+    Shadowsocks {
+        url: String,
+        #[serde(default)]
+        interface: Option<String>,
+    },
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -1517,7 +1563,10 @@ impl ShowLink {
 }
 
 impl Serialize for ShowLink {
-    fn serialize<S: serde::Serializer>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error> {
+    fn serialize<S: serde::Serializer>(
+        &self,
+        serializer: S,
+    ) -> std::result::Result<S::Ok, S::Error> {
         match self {
             ShowLink::None => Vec::<String>::new().serialize(serializer),
             ShowLink::All => serializer.serialize_str("*"),
@@ -1527,7 +1576,9 @@ impl Serialize for ShowLink {
 }
 
 impl<'de> Deserialize<'de> for ShowLink {
-    fn deserialize<D: serde::Deserializer<'de>>(deserializer: D) -> std::result::Result<Self, D::Error> {
+    fn deserialize<D: serde::Deserializer<'de>>(
+        deserializer: D,
+    ) -> std::result::Result<Self, D::Error> {
         use serde::de;
 
         struct ShowLinkVisitor;
@@ -1543,14 +1594,14 @@ impl<'de> Deserialize<'de> for ShowLink {
                 if v == "*" {
                     Ok(ShowLink::All)
                 } else {
-                    Err(de::Error::invalid_value(
-                        de::Unexpected::Str(v),
-                        &r#""*""#,
-                    ))
+                    Err(de::Error::invalid_value(de::Unexpected::Str(v), &r#""*""#))
                 }
             }
 
-            fn visit_seq<A: de::SeqAccess<'de>>(self, mut seq: A) -> std::result::Result<ShowLink, A::Error> {
+            fn visit_seq<A: de::SeqAccess<'de>>(
+                self,
+                mut seq: A,
+            ) -> std::result::Result<ShowLink, A::Error> {
                 let mut names = Vec::new();
                 while let Some(name) = seq.next_element::<String>()? {
                     names.push(name);

src/maestro/helpers.rs

@@ -205,6 +205,7 @@ pub(crate) fn format_uptime(total_secs: u64) -> String {
     format!("{} / {} seconds", parts.join(", "), total_secs)
 }
 
+#[allow(dead_code)]
 pub(crate) async fn wait_until_admission_open(admission_rx: &mut watch::Receiver<bool>) -> bool {
     loop {
         if *admission_rx.borrow() {

src/maestro/listeners.rs

@@ -24,7 +24,7 @@ use crate::transport::{
     ListenOptions, UpstreamManager, create_listener, find_listener_processes,
 };
 
-use super::helpers::{is_expected_handshake_eof, print_proxy_links, wait_until_admission_open};
+use super::helpers::{is_expected_handshake_eof, print_proxy_links};
 
 pub(crate) struct BoundListeners {
     pub(crate) listeners: Vec<(TcpListener, bool)>,
@@ -195,7 +195,7 @@ pub(crate) async fn bind_listeners(
         has_unix_listener = true;
 
         let mut config_rx_unix: watch::Receiver<Arc<ProxyConfig>> = config_rx.clone();
-        let mut admission_rx_unix = admission_rx.clone();
+        let admission_rx_unix = admission_rx.clone();
         let stats = stats.clone();
         let upstream_manager = upstream_manager.clone();
         let replay_checker = replay_checker.clone();
@@ -212,17 +212,44 @@ pub(crate) async fn bind_listeners(
             let unix_conn_counter = Arc::new(std::sync::atomic::AtomicU64::new(1));
 
             loop {
-                if !wait_until_admission_open(&mut admission_rx_unix).await {
-                    warn!("Conditional-admission gate channel closed for unix listener");
-                    break;
-                }
                 match unix_listener.accept().await {
                     Ok((stream, _)) => {
-                        let permit = match max_connections_unix.clone().acquire_owned().await {
-                            Ok(permit) => permit,
-                            Err(_) => {
-                                error!("Connection limiter is closed");
-                                break;
+                        if !*admission_rx_unix.borrow() {
+                            drop(stream);
+                            continue;
+                        }
+                        let accept_permit_timeout_ms = config_rx_unix
+                            .borrow()
+                            .server
+                            .accept_permit_timeout_ms;
+                        let permit = if accept_permit_timeout_ms == 0 {
+                            match max_connections_unix.clone().acquire_owned().await {
+                                Ok(permit) => permit,
+                                Err(_) => {
+                                    error!("Connection limiter is closed");
+                                    break;
+                                }
+                            }
+                        } else {
+                            match tokio::time::timeout(
+                                Duration::from_millis(accept_permit_timeout_ms),
+                                max_connections_unix.clone().acquire_owned(),
+                            )
+                            .await
+                            {
+                                Ok(Ok(permit)) => permit,
+                                Ok(Err(_)) => {
+                                    error!("Connection limiter is closed");
+                                    break;
+                                }
+                                Err(_) => {
+                                    debug!(
+                                        timeout_ms = accept_permit_timeout_ms,
+                                        "Dropping accepted unix connection: permit wait timeout"
+                                    );
+                                    drop(stream);
+                                    continue;
+                                }
                             }
                         };
                         let conn_id =
@@ -312,7 +339,7 @@ pub(crate) fn spawn_tcp_accept_loops(
 ) {
     for (listener, listener_proxy_protocol) in listeners {
         let mut config_rx: watch::Receiver<Arc<ProxyConfig>> = config_rx.clone();
-        let mut admission_rx_tcp = admission_rx.clone();
+        let admission_rx_tcp = admission_rx.clone();
         let stats = stats.clone();
         let upstream_manager = upstream_manager.clone();
         let replay_checker = replay_checker.clone();
@@ -327,17 +354,46 @@ pub(crate) fn spawn_tcp_accept_loops(
 
         tokio::spawn(async move {
             loop {
-                if !wait_until_admission_open(&mut admission_rx_tcp).await {
-                    warn!("Conditional-admission gate channel closed for tcp listener");
-                    break;
-                }
                 match listener.accept().await {
                     Ok((stream, peer_addr)) => {
-                        let permit = match max_connections_tcp.clone().acquire_owned().await {
-                            Ok(permit) => permit,
-                            Err(_) => {
-                                error!("Connection limiter is closed");
-                                break;
+                        if !*admission_rx_tcp.borrow() {
+                            debug!(peer = %peer_addr, "Admission gate closed, dropping connection");
+                            drop(stream);
+                            continue;
+                        }
+                        let accept_permit_timeout_ms = config_rx
+                            .borrow()
+                            .server
+                            .accept_permit_timeout_ms;
+                        let permit = if accept_permit_timeout_ms == 0 {
+                            match max_connections_tcp.clone().acquire_owned().await {
+                                Ok(permit) => permit,
+                                Err(_) => {
+                                    error!("Connection limiter is closed");
+                                    break;
+                                }
+                            }
+                        } else {
+                            match tokio::time::timeout(
+                                Duration::from_millis(accept_permit_timeout_ms),
+                                max_connections_tcp.clone().acquire_owned(),
+                            )
+                            .await
+                            {
+                                Ok(Ok(permit)) => permit,
+                                Ok(Err(_)) => {
+                                    error!("Connection limiter is closed");
+                                    break;
+                                }
+                                Err(_) => {
+                                    debug!(
+                                        peer = %peer_addr,
+                                        timeout_ms = accept_permit_timeout_ms,
+                                        "Dropping accepted connection: permit wait timeout"
+                                    );
+                                    drop(stream);
+                                    continue;
+                                }
                             }
                         };
                         let config = config_rx.borrow_and_update().clone();

src/maestro/me_startup.rs

@@ -267,6 +267,8 @@ pub(crate) async fn initialize_me_pool(
                     config.general.me_warn_rate_limit_ms,
                     config.general.me_route_no_writer_mode,
                     config.general.me_route_no_writer_wait_ms,
+                    config.general.me_route_hybrid_max_wait_ms,
+                    config.general.me_route_blocking_send_timeout_ms,
                     config.general.me_route_inline_recovery_attempts,
                     config.general.me_route_inline_recovery_wait_ms,
                 );

src/proxy/direct_relay.rs

@@ -3,8 +3,7 @@ use std::io::Write;
 use std::net::SocketAddr;
 use std::sync::Arc;
 
-use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt};
-use tokio::net::TcpStream;
+use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt, ReadHalf, WriteHalf, split};
 use tokio::sync::watch;
 use tracing::{debug, info, warn};
 
@@ -15,7 +14,7 @@ use crate::protocol::constants::*;
 use crate::proxy::handshake::{HandshakeSuccess, encrypt_tg_nonce_with_ciphers, generate_tg_nonce};
 use crate::proxy::relay::relay_bidirectional;
 use crate::proxy::route_mode::{
-    RelayRouteMode, RouteCutoverState, ROUTE_SWITCH_ERROR_MSG, affected_cutover_state,
+    ROUTE_SWITCH_ERROR_MSG, RelayRouteMode, RouteCutoverState, affected_cutover_state,
     cutover_stagger_delay,
 };
 use crate::proxy::adaptive_buffers;
@@ -56,7 +55,11 @@ where
     );
 
     let tg_stream = upstream_manager
-        .connect(dc_addr, Some(success.dc_idx), user.strip_prefix("scope_").filter(|s| !s.is_empty()))
+        .connect(
+            dc_addr,
+            Some(success.dc_idx),
+            user.strip_prefix("scope_").filter(|s| !s.is_empty()),
+        )
         .await?;
 
     debug!(peer = %success.peer, dc_addr = %dc_addr, "Connected, performing TG handshake");
@@ -93,11 +96,9 @@ where
     );
     tokio::pin!(relay_result);
     let relay_result = loop {
-        if let Some(cutover) = affected_cutover_state(
-            &route_rx,
-            RelayRouteMode::Direct,
-            route_snapshot.generation,
-        ) {
+        if let Some(cutover) =
+            affected_cutover_state(&route_rx, RelayRouteMode::Direct, route_snapshot.generation)
+        {
             let delay = cutover_stagger_delay(session_id, cutover.generation);
             warn!(
                 user = %user,
@@ -148,7 +149,9 @@ fn get_dc_addr_static(dc_idx: i16, config: &ProxyConfig) -> Result<SocketAddr> {
         for addr_str in addrs {
             match addr_str.parse::<SocketAddr>() {
                 Ok(addr) => parsed.push(addr),
-                Err(_) => warn!(dc_idx = dc_idx, addr_str = %addr_str, "Invalid DC override address in config, ignoring"),
+                Err(_) => {
+                    warn!(dc_idx = dc_idx, addr_str = %addr_str, "Invalid DC override address in config, ignoring")
+                }
             }
         }
 
@@ -170,7 +173,10 @@ fn get_dc_addr_static(dc_idx: i16, config: &ProxyConfig) -> Result<SocketAddr> {
 
     // Unknown DC requested by client without override: log and fall back.
     if !config.dc_overrides.contains_key(&dc_key) {
-        warn!(dc_idx = dc_idx, "Requested non-standard DC with no override; falling back to default cluster");
+        warn!(
+            dc_idx = dc_idx,
+            "Requested non-standard DC with no override; falling back to default cluster"
+        );
         if config.general.unknown_dc_file_log_enabled
             && let Some(path) = &config.general.unknown_dc_log_path
             && let Ok(handle) = tokio::runtime::Handle::try_current()
@@ -204,15 +210,15 @@ fn get_dc_addr_static(dc_idx: i16, config: &ProxyConfig) -> Result<SocketAddr> {
     ))
 }
 
-async fn do_tg_handshake_static(
-    mut stream: TcpStream,
+async fn do_tg_handshake_static<S>(
+    mut stream: S,
     success: &HandshakeSuccess,
     config: &ProxyConfig,
     rng: &SecureRandom,
-) -> Result<(
-    CryptoReader<tokio::net::tcp::OwnedReadHalf>,
-    CryptoWriter<tokio::net::tcp::OwnedWriteHalf>,
-)> {
+) -> Result<(CryptoReader<ReadHalf<S>>, CryptoWriter<WriteHalf<S>>)>
+where
+    S: AsyncRead + AsyncWrite + Unpin,
+{
     let (nonce, _tg_enc_key, _tg_enc_iv, _tg_dec_key, _tg_dec_iv) = generate_tg_nonce(
         success.proto_tag,
         success.dc_idx,
@@ -235,7 +241,7 @@ async fn do_tg_handshake_static(
     stream.write_all(&encrypted_nonce).await?;
     stream.flush().await?;
 
-    let (read_half, write_half) = stream.into_split();
+    let (read_half, write_half) = split(stream);
 
     let max_pending = config.general.crypto_pending_buffer;
     Ok((

src/proxy/middle_relay.rs

@@ -222,6 +222,7 @@ fn should_yield_c2me_sender(sent_since_yield: usize, has_backlog: bool) -> bool
 async fn enqueue_c2me_command(
     tx: &mpsc::Sender<C2MeCommand>,
     cmd: C2MeCommand,
+    send_timeout: Duration,
 ) -> std::result::Result<(), mpsc::error::SendError<C2MeCommand>> {
     match tx.try_send(cmd) {
         Ok(()) => Ok(()),
@@ -231,7 +232,17 @@ async fn enqueue_c2me_command(
             if tx.capacity() <= C2ME_SOFT_PRESSURE_MIN_FREE_SLOTS {
                 tokio::task::yield_now().await;
             }
-            tx.send(cmd).await
+            if send_timeout.is_zero() {
+                return tx.send(cmd).await;
+            }
+            match tokio::time::timeout(send_timeout, tx.reserve()).await {
+                Ok(Ok(permit)) => {
+                    permit.send(cmd);
+                    Ok(())
+                }
+                Ok(Err(_)) => Err(mpsc::error::SendError(cmd)),
+                Err(_) => Err(mpsc::error::SendError(cmd)),
+            }
         }
     }
 }
@@ -355,6 +366,7 @@ where
         .general
         .me_c2me_channel_capacity
         .max(C2ME_CHANNEL_CAPACITY_FALLBACK);
+    let c2me_send_timeout = Duration::from_millis(config.general.me_c2me_send_timeout_ms);
     let (c2me_tx, mut c2me_rx) = mpsc::channel::<C2MeCommand>(c2me_channel_capacity);
     let me_pool_c2me = me_pool.clone();
     let effective_tag = effective_tag;
@@ -363,15 +375,42 @@ where
         while let Some(cmd) = c2me_rx.recv().await {
             match cmd {
                 C2MeCommand::Data { payload, flags } => {
-                    me_pool_c2me.send_proxy_req(
-                        conn_id,
-                        success.dc_idx,
-                        peer,
-                        translated_local_addr,
-                        payload.as_ref(),
-                        flags,
-                        effective_tag.as_deref(),
-                    ).await?;
+                    if c2me_send_timeout.is_zero() {
+                        me_pool_c2me
+                            .send_proxy_req(
+                                conn_id,
+                                success.dc_idx,
+                                peer,
+                                translated_local_addr,
+                                payload.as_ref(),
+                                flags,
+                                effective_tag.as_deref(),
+                            )
+                            .await?;
+                    } else {
+                        match tokio::time::timeout(
+                            c2me_send_timeout,
+                            me_pool_c2me.send_proxy_req(
+                                conn_id,
+                                success.dc_idx,
+                                peer,
+                                translated_local_addr,
+                                payload.as_ref(),
+                                flags,
+                                effective_tag.as_deref(),
+                            ),
+                        )
+                        .await
+                        {
+                            Ok(send_result) => send_result?,
+                            Err(_) => {
+                                return Err(ProxyError::Proxy(format!(
+                                    "ME send timeout after {}ms",
+                                    c2me_send_timeout.as_millis()
+                                )));
+                            }
+                        }
+                    }
                     sent_since_yield = sent_since_yield.saturating_add(1);
                     if should_yield_c2me_sender(sent_since_yield, !c2me_rx.is_empty()) {
                         sent_since_yield = 0;
@@ -555,7 +594,7 @@ where
     loop {
         if session_lease.is_stale() {
             stats.increment_reconnect_stale_close_total();
-            let _ = enqueue_c2me_command(&c2me_tx, C2MeCommand::Close).await;
+            let _ = enqueue_c2me_command(&c2me_tx, C2MeCommand::Close, c2me_send_timeout).await;
             main_result = Err(ProxyError::Proxy("Session evicted by reconnect".to_string()));
             break;
         }
@@ -573,7 +612,7 @@ where
                 "Cutover affected middle session, closing client connection"
             );
             tokio::time::sleep(delay).await;
-            let _ = enqueue_c2me_command(&c2me_tx, C2MeCommand::Close).await;
+            let _ = enqueue_c2me_command(&c2me_tx, C2MeCommand::Close, c2me_send_timeout).await;
             main_result = Err(ProxyError::Proxy(ROUTE_SWITCH_ERROR_MSG.to_string()));
             break;
         }
@@ -607,9 +646,13 @@ where
                             flags |= RPC_FLAG_NOT_ENCRYPTED;
                         }
                         // Keep client read loop lightweight: route heavy ME send path via a dedicated task.
-                        if enqueue_c2me_command(&c2me_tx, C2MeCommand::Data { payload, flags })
-                            .await
-                            .is_err()
+                        if enqueue_c2me_command(
+                            &c2me_tx,
+                            C2MeCommand::Data { payload, flags },
+                            c2me_send_timeout,
+                        )
+                        .await
+                        .is_err()
                         {
                             main_result = Err(ProxyError::Proxy("ME sender channel closed".into()));
                             break;
@@ -618,7 +661,12 @@ where
                     Ok(None) => {
                         debug!(conn_id, "Client EOF");
                         client_closed = true;
-                        let _ = enqueue_c2me_command(&c2me_tx, C2MeCommand::Close).await;
+                        let _ = enqueue_c2me_command(
+                            &c2me_tx,
+                            C2MeCommand::Close,
+                            c2me_send_timeout,
+                        )
+                        .await;
                         break;
                     }
                     Err(e) => {
@@ -993,6 +1041,7 @@ mod tests {
                 payload: Bytes::from_static(&[1, 2, 3]),
                 flags: 0,
             },
+            TokioDuration::from_millis(50),
         )
         .await
         .unwrap();
@@ -1028,6 +1077,7 @@ mod tests {
                     payload: Bytes::from_static(&[7, 7]),
                     flags: 7,
                 },
+                TokioDuration::from_millis(100),
             )
             .await
             .unwrap();

src/tls_front/fetcher.rs

@@ -7,33 +7,29 @@ use tokio::net::TcpStream;
 #[cfg(unix)]
 use tokio::net::UnixStream;
 use tokio::time::timeout;
-use tokio_rustls::client::TlsStream;
 use tokio_rustls::TlsConnector;
+use tokio_rustls::client::TlsStream;
 use tracing::{debug, warn};
 
-use rustls::client::danger::{HandshakeSignatureValid, ServerCertVerified, ServerCertVerifier};
 use rustls::client::ClientConfig;
+use rustls::client::danger::{HandshakeSignatureValid, ServerCertVerified, ServerCertVerifier};
 use rustls::pki_types::{CertificateDer, ServerName, UnixTime};
 use rustls::{DigitallySignedStruct, Error as RustlsError};
 
-use x509_parser::prelude::FromDer;
 use x509_parser::certificate::X509Certificate;
+use x509_parser::prelude::FromDer;
 
 use crate::crypto::SecureRandom;
 use crate::network::dns_overrides::resolve_socket_addr;
 use crate::protocol::constants::{
     TLS_RECORD_APPLICATION, TLS_RECORD_CHANGE_CIPHER, TLS_RECORD_HANDSHAKE,
 };
-use crate::transport::proxy_protocol::{ProxyProtocolV1Builder, ProxyProtocolV2Builder};
 use crate::tls_front::types::{
-    ParsedCertificateInfo,
-    ParsedServerHello,
-    TlsBehaviorProfile,
-    TlsCertPayload,
-    TlsExtension,
-    TlsFetchResult,
-    TlsProfileSource,
+    ParsedCertificateInfo, ParsedServerHello, TlsBehaviorProfile, TlsCertPayload, TlsExtension,
+    TlsFetchResult, TlsProfileSource,
 };
+use crate::transport::UpstreamStream;
+use crate::transport::proxy_protocol::{ProxyProtocolV1Builder, ProxyProtocolV2Builder};
 
 /// No-op verifier: accept any certificate (we only need lengths and metadata).
 #[derive(Debug)]
@@ -144,21 +140,27 @@ fn build_client_hello(sni: &str, rng: &SecureRandom) -> Vec<u8> {
     exts.extend_from_slice(&0x000au16.to_be_bytes());
     exts.extend_from_slice(&((2 + groups.len() * 2) as u16).to_be_bytes());
     exts.extend_from_slice(&(groups.len() as u16 * 2).to_be_bytes());
-    for g in groups { exts.extend_from_slice(&g.to_be_bytes()); }
+    for g in groups {
+        exts.extend_from_slice(&g.to_be_bytes());
+    }
 
     // signature_algorithms
     let sig_algs: [u16; 4] = [0x0804, 0x0805, 0x0403, 0x0503]; // rsa_pss_rsae_sha256/384, ecdsa_secp256r1_sha256, rsa_pkcs1_sha256
     exts.extend_from_slice(&0x000du16.to_be_bytes());
     exts.extend_from_slice(&((2 + sig_algs.len() * 2) as u16).to_be_bytes());
     exts.extend_from_slice(&(sig_algs.len() as u16 * 2).to_be_bytes());
-    for a in sig_algs { exts.extend_from_slice(&a.to_be_bytes()); }
+    for a in sig_algs {
+        exts.extend_from_slice(&a.to_be_bytes());
+    }
 
     // supported_versions (TLS1.3 + TLS1.2)
     let versions: [u16; 2] = [0x0304, 0x0303];
     exts.extend_from_slice(&0x002bu16.to_be_bytes());
     exts.extend_from_slice(&((1 + versions.len() * 2) as u16).to_be_bytes());
     exts.push((versions.len() * 2) as u8);
-    for v in versions { exts.extend_from_slice(&v.to_be_bytes()); }
+    for v in versions {
+        exts.extend_from_slice(&v.to_be_bytes());
+    }
 
     // key_share (x25519)
     let key = gen_key_share(rng);
@@ -273,7 +275,10 @@ fn parse_server_hello(body: &[u8]) -> Option<ParsedServerHello> {
         pos += 4;
         let data = body.get(pos..pos + elen)?.to_vec();
         pos += elen;
-        extensions.push(TlsExtension { ext_type: etype, data });
+        extensions.push(TlsExtension {
+            ext_type: etype,
+            data,
+        });
     }
 
     Some(ParsedServerHello {
@@ -394,7 +399,7 @@ async fn connect_tcp_with_upstream(
     port: u16,
     connect_timeout: Duration,
     upstream: Option<std::sync::Arc<crate::transport::UpstreamManager>>,
-) -> Result<TcpStream> {
+) -> Result<UpstreamStream> {
     if let Some(manager) = upstream {
         if let Some(addr) = resolve_socket_addr(host, port) {
             match manager.connect(addr, None, None).await {
@@ -408,23 +413,25 @@ async fn connect_tcp_with_upstream(
                     );
                 }
             }
-        } else if let Ok(mut addrs) = tokio::net::lookup_host((host, port)).await {
-            if let Some(addr) = addrs.find(|a| a.is_ipv4()) {
-                match manager.connect(addr, None, None).await {
-                    Ok(stream) => return Ok(stream),
-                    Err(e) => {
-                        warn!(
-                            host = %host,
-                            port = port,
-                            error = %e,
-                            "Upstream connect failed, using direct connect"
-                        );
-                    }
+        } else if let Ok(mut addrs) = tokio::net::lookup_host((host, port)).await
+            && let Some(addr) = addrs.find(|a| a.is_ipv4())
+        {
+            match manager.connect(addr, None, None).await {
+                Ok(stream) => return Ok(stream),
+                Err(e) => {
+                    warn!(
+                        host = %host,
+                        port = port,
+                        error = %e,
+                        "Upstream connect failed, using direct connect"
+                    );
                 }
             }
         }
     }
-    connect_with_dns_override(host, port, connect_timeout).await
+    Ok(UpstreamStream::Tcp(
+        connect_with_dns_override(host, port, connect_timeout).await?,
+    ))
 }
 
 fn encode_tls13_certificate_message(cert_chain_der: &[Vec<u8>]) -> Option<Vec<u8>> {
@@ -443,9 +450,7 @@ fn encode_tls13_certificate_message(cert_chain_der: &[Vec<u8>]) -> Option<Vec<u8
     }
 
     // Certificate = context_len(1) + certificate_list_len(3) + entries
-    let body_len = 1usize
-        .checked_add(3)?
-        .checked_add(certificate_list.len())?;
+    let body_len = 1usize.checked_add(3)?.checked_add(certificate_list.len())?;
 
     let mut message = Vec::with_capacity(4 + body_len);
     message.push(0x0b); // HandshakeType::certificate
@@ -549,7 +554,8 @@ async fn fetch_via_raw_tls(
                     sock = %sock_path,
                     "Raw TLS fetch using mask unix socket"
                 );
-                return fetch_via_raw_tls_stream(stream, sni, connect_timeout, proxy_protocol).await;
+                return fetch_via_raw_tls_stream(stream, sni, connect_timeout, proxy_protocol)
+                    .await;
             }
             Ok(Err(e)) => {
                 warn!(
@@ -616,12 +622,13 @@ where
         .map(|slice| slice.to_vec())
         .unwrap_or_default();
     let cert_chain_der: Vec<Vec<u8>> = certs.iter().map(|c| c.as_ref().to_vec()).collect();
-    let cert_payload = encode_tls13_certificate_message(&cert_chain_der).map(|certificate_message| {
-        TlsCertPayload {
-            cert_chain_der: cert_chain_der.clone(),
-            certificate_message,
-        }
-    });
+    let cert_payload =
+        encode_tls13_certificate_message(&cert_chain_der).map(|certificate_message| {
+            TlsCertPayload {
+                cert_chain_der: cert_chain_der.clone(),
+                certificate_message,
+            }
+        });
 
     let total_cert_len = cert_payload
         .as_ref()

src/transport/middle_proxy/health.rs

@@ -1574,6 +1574,8 @@ mod tests {
             general.me_warn_rate_limit_ms,
             MeRouteNoWriterMode::default(),
             general.me_route_no_writer_wait_ms,
+            general.me_route_hybrid_max_wait_ms,
+            general.me_route_blocking_send_timeout_ms,
             general.me_route_inline_recovery_attempts,
             general.me_route_inline_recovery_wait_ms,
         )

src/transport/middle_proxy/health_adversarial_tests.rs

@@ -111,6 +111,8 @@ async fn make_pool(
         general.me_warn_rate_limit_ms,
         MeRouteNoWriterMode::default(),
         general.me_route_no_writer_wait_ms,
+        general.me_route_hybrid_max_wait_ms,
+        general.me_route_blocking_send_timeout_ms,
         general.me_route_inline_recovery_attempts,
         general.me_route_inline_recovery_wait_ms,
     );

src/transport/middle_proxy/health_integration_tests.rs

@@ -110,6 +110,8 @@ async fn make_pool(
         general.me_warn_rate_limit_ms,
         MeRouteNoWriterMode::default(),
         general.me_route_no_writer_wait_ms,
+        general.me_route_hybrid_max_wait_ms,
+        general.me_route_blocking_send_timeout_ms,
         general.me_route_inline_recovery_attempts,
         general.me_route_inline_recovery_wait_ms,
     );

src/transport/middle_proxy/health_regression_tests.rs

@@ -103,6 +103,8 @@ async fn make_pool(me_pool_drain_threshold: u64) -> Arc<MePool> {
         general.me_warn_rate_limit_ms,
         MeRouteNoWriterMode::default(),
         general.me_route_no_writer_wait_ms,
+        general.me_route_hybrid_max_wait_ms,
+        general.me_route_blocking_send_timeout_ms,
         general.me_route_inline_recovery_attempts,
         general.me_route_inline_recovery_wait_ms,
     )

src/transport/middle_proxy/ping.rs

@@ -7,6 +7,7 @@ use tokio::net::UdpSocket;
 use crate::config::{UpstreamConfig, UpstreamType};
 use crate::crypto::SecureRandom;
 use crate::error::ProxyError;
+use crate::transport::shadowsocks::sanitize_shadowsocks_url;
 use crate::transport::{UpstreamEgressInfo, UpstreamRouteKind};
 
 use super::MePool;
@@ -40,7 +41,11 @@ pub fn format_sample_line(sample: &MePingSample) -> String {
     let sign = if sample.dc >= 0 { "+" } else { "-" };
     let addr = format!("{}:{}", sample.addr.ip(), sample.addr.port());
 
-    match (sample.connect_ms, sample.handshake_ms.as_ref(), sample.error.as_ref()) {
+    match (
+        sample.connect_ms,
+        sample.handshake_ms.as_ref(),
+        sample.error.as_ref(),
+    ) {
         (Some(conn), Some(hs), None) => format!(
             "     {sign} {addr}\tPing: {:.0} ms / RPC: {:.0} ms / OK",
             conn, hs
@@ -121,6 +126,7 @@ fn route_from_egress(egress: Option<UpstreamEgressInfo>) -> Option<String> {
                 None => route,
             })
         }
+        UpstreamRouteKind::Shadowsocks => Some("shadowsocks".to_string()),
     }
 }
 
@@ -232,6 +238,9 @@ pub async fn format_me_route(
             }
             UpstreamType::Socks4 { address, .. } => format!("socks4://{address}"),
             UpstreamType::Socks5 { address, .. } => format!("socks5://{address}"),
+            UpstreamType::Shadowsocks { url, .. } => sanitize_shadowsocks_url(url)
+                .map(|address| format!("shadowsocks://{address}"))
+                .unwrap_or_else(|_| "shadowsocks://invalid".to_string()),
         };
     }
 
@@ -254,6 +263,12 @@ pub async fn format_me_route(
     if has_socks5 {
         kinds.push("socks5");
     }
+    if enabled_upstreams
+        .iter()
+        .any(|u| matches!(u.upstream_type, UpstreamType::Shadowsocks { .. }))
+    {
+        kinds.push("shadowsocks");
+    }
     format!("mixed upstreams ({})", kinds.join(", "))
 }
 
@@ -335,7 +350,10 @@ pub async fn run_me_ping(pool: &Arc<MePool>, rng: &SecureRandom) -> Vec<MePingRe
                 Ok((stream, conn_rtt, upstream_egress)) => {
                     connect_ms = Some(conn_rtt);
                     route = route_from_egress(upstream_egress);
-                    match pool.handshake_only(stream, addr, upstream_egress, rng).await {
+                    match pool
+                        .handshake_only(stream, addr, upstream_egress, rng)
+                        .await
+                    {
                         Ok(hs) => {
                             handshake_ms = Some(hs.handshake_ms);
                             // drop halves to close

src/transport/middle_proxy/pool.rs

@@ -193,6 +193,8 @@ pub struct MePool {
     pub(super) me_reader_route_data_wait_ms: Arc<AtomicU64>,
     pub(super) me_route_no_writer_mode: AtomicU8,
     pub(super) me_route_no_writer_wait: Duration,
+    pub(super) me_route_hybrid_max_wait: Duration,
+    pub(super) me_route_blocking_send_timeout: Duration,
     pub(super) me_route_inline_recovery_attempts: u32,
     pub(super) me_route_inline_recovery_wait: Duration,
     pub(super) me_health_interval_ms_unhealthy: AtomicU64,
@@ -307,6 +309,8 @@ impl MePool {
         me_warn_rate_limit_ms: u64,
         me_route_no_writer_mode: MeRouteNoWriterMode,
         me_route_no_writer_wait_ms: u64,
+        me_route_hybrid_max_wait_ms: u64,
+        me_route_blocking_send_timeout_ms: u64,
         me_route_inline_recovery_attempts: u32,
         me_route_inline_recovery_wait_ms: u64,
     ) -> Arc<Self> {
@@ -490,6 +494,10 @@ impl MePool {
             me_reader_route_data_wait_ms: Arc::new(AtomicU64::new(me_reader_route_data_wait_ms)),
             me_route_no_writer_mode: AtomicU8::new(me_route_no_writer_mode.as_u8()),
             me_route_no_writer_wait: Duration::from_millis(me_route_no_writer_wait_ms),
+            me_route_hybrid_max_wait: Duration::from_millis(me_route_hybrid_max_wait_ms),
+            me_route_blocking_send_timeout: Duration::from_millis(
+                me_route_blocking_send_timeout_ms,
+            ),
             me_route_inline_recovery_attempts,
             me_route_inline_recovery_wait: Duration::from_millis(me_route_inline_recovery_wait_ms),
             me_health_interval_ms_unhealthy: AtomicU64::new(me_health_interval_ms_unhealthy.max(1)),

src/transport/middle_proxy/pool_writer.rs

@@ -312,41 +312,28 @@ impl MePool {
                 let mut p = Vec::with_capacity(12);
                 p.extend_from_slice(&RPC_PING_U32.to_le_bytes());
                 p.extend_from_slice(&sent_id.to_le_bytes());
-                {
-                    let mut tracker = ping_tracker_ping.lock().await;
-                    let now_epoch_ms = std::time::SystemTime::now()
-                        .duration_since(std::time::UNIX_EPOCH)
-                        .unwrap_or_default()
-                        .as_millis() as u64;
-                    let mut run_cleanup = false;
-                    if let Some(pool) = pool_ping.upgrade() {
-                        let last_cleanup_ms = pool
+                let now_epoch_ms = std::time::SystemTime::now()
+                    .duration_since(std::time::UNIX_EPOCH)
+                    .unwrap_or_default()
+                    .as_millis() as u64;
+                let mut run_cleanup = false;
+                if let Some(pool) = pool_ping.upgrade() {
+                    let last_cleanup_ms = pool
+                        .ping_tracker_last_cleanup_epoch_ms
+                        .load(Ordering::Relaxed);
+                    if now_epoch_ms.saturating_sub(last_cleanup_ms) >= 30_000
+                        && pool
                             .ping_tracker_last_cleanup_epoch_ms
-                            .load(Ordering::Relaxed);
-                        if now_epoch_ms.saturating_sub(last_cleanup_ms) >= 30_000
-                            && pool
-                                .ping_tracker_last_cleanup_epoch_ms
-                                .compare_exchange(
-                                    last_cleanup_ms,
-                                    now_epoch_ms,
-                                    Ordering::AcqRel,
-                                    Ordering::Relaxed,
-                                )
-                                .is_ok()
-                        {
-                            run_cleanup = true;
-                        }
+                            .compare_exchange(
+                                last_cleanup_ms,
+                                now_epoch_ms,
+                                Ordering::AcqRel,
+                                Ordering::Relaxed,
+                            )
+                            .is_ok()
+                    {
+                        run_cleanup = true;
                     }
-
-                    if run_cleanup {
-                        let before = tracker.len();
-                        tracker.retain(|_, (ts, _)| ts.elapsed() < Duration::from_secs(120));
-                        let expired = before.saturating_sub(tracker.len());
-                        if expired > 0 {
-                            stats_ping.increment_me_keepalive_timeout_by(expired as u64);
-                        }
-                    }
-                    tracker.insert(sent_id, (std::time::Instant::now(), writer_id));
                 }
                 ping_id = ping_id.wrapping_add(1);
                 stats_ping.increment_me_keepalive_sent();
@@ -367,6 +354,16 @@ impl MePool {
                     }
                     break;
                 }
+                let mut tracker = ping_tracker_ping.lock().await;
+                if run_cleanup {
+                    let before = tracker.len();
+                    tracker.retain(|_, (ts, _)| ts.elapsed() < Duration::from_secs(120));
+                    let expired = before.saturating_sub(tracker.len());
+                    if expired > 0 {
+                        stats_ping.increment_me_keepalive_timeout_by(expired as u64);
+                    }
+                }
+                tracker.insert(sent_id, (std::time::Instant::now(), writer_id));
             }
         });
 

src/transport/middle_proxy/send.rs

@@ -6,6 +6,7 @@ use std::sync::atomic::Ordering;
 use std::time::{Duration, Instant};
 
 use bytes::Bytes;
+use tokio::sync::mpsc;
 use tokio::sync::mpsc::error::TrySendError;
 use tracing::{debug, warn};
 
@@ -29,6 +30,29 @@ const PICK_PENALTY_DRAINING: u64 = 600;
 const PICK_PENALTY_STALE: u64 = 300;
 const PICK_PENALTY_DEGRADED: u64 = 250;
 
+enum TimedSendError<T> {
+    Closed(T),
+    Timeout(T),
+}
+
+async fn send_writer_command_with_timeout(
+    tx: &mpsc::Sender<WriterCommand>,
+    cmd: WriterCommand,
+    timeout: Duration,
+) -> std::result::Result<(), TimedSendError<WriterCommand>> {
+    if timeout.is_zero() {
+        return tx.send(cmd).await.map_err(|err| TimedSendError::Closed(err.0));
+    }
+    match tokio::time::timeout(timeout, tx.reserve()).await {
+        Ok(Ok(permit)) => {
+            permit.send(cmd);
+            Ok(())
+        }
+        Ok(Err(_)) => Err(TimedSendError::Closed(cmd)),
+        Err(_) => Err(TimedSendError::Timeout(cmd)),
+    }
+}
+
 impl MePool {
     /// Send RPC_PROXY_REQ. `tag_override`: per-user ad_tag (from access.user_ad_tags); if None, uses pool default.
     pub async fn send_proxy_req(
@@ -78,8 +102,18 @@ impl MePool {
         let mut hybrid_last_recovery_at: Option<Instant> = None;
         let hybrid_wait_step = self.me_route_no_writer_wait.max(Duration::from_millis(50));
         let mut hybrid_wait_current = hybrid_wait_step;
+        let hybrid_deadline = Instant::now() + self.me_route_hybrid_max_wait;
 
         loop {
+            if matches!(no_writer_mode, MeRouteNoWriterMode::HybridAsyncPersistent)
+                && Instant::now() >= hybrid_deadline
+            {
+                self.stats.increment_me_no_writer_failfast_total();
+                return Err(ProxyError::Proxy(
+                    "No ME writer available in hybrid wait window".into(),
+                ));
+            }
+            let mut skip_writer_id: Option<u64> = None;
             let current_meta = self
                 .registry
                 .get_meta(conn_id)
@@ -90,12 +124,30 @@ impl MePool {
                 match current.tx.try_send(WriterCommand::Data(current_payload.clone())) {
                     Ok(()) => return Ok(()),
                     Err(TrySendError::Full(cmd)) => {
-                        if current.tx.send(cmd).await.is_ok() {
-                            return Ok(());
+                        match send_writer_command_with_timeout(
+                            &current.tx,
+                            cmd,
+                            self.me_route_blocking_send_timeout,
+                        )
+                        .await
+                        {
+                            Ok(()) => return Ok(()),
+                            Err(TimedSendError::Closed(_)) => {
+                                warn!(writer_id = current.writer_id, "ME writer channel closed");
+                                self.remove_writer_and_close_clients(current.writer_id).await;
+                                continue;
+                            }
+                            Err(TimedSendError::Timeout(_)) => {
+                                debug!(
+                                    conn_id,
+                                    writer_id = current.writer_id,
+                                    timeout_ms = self.me_route_blocking_send_timeout.as_millis()
+                                        as u64,
+                                    "ME writer send timed out for bound writer, trying reroute"
+                                );
+                                skip_writer_id = Some(current.writer_id);
+                            }
                         }
-                        warn!(writer_id = current.writer_id, "ME writer channel closed");
-                        self.remove_writer_and_close_clients(current.writer_id).await;
-                        continue;
                     }
                     Err(TrySendError::Closed(_)) => {
                         warn!(writer_id = current.writer_id, "ME writer channel closed");
@@ -200,6 +252,9 @@ impl MePool {
                     .candidate_indices_for_dc(&writers_snapshot, routed_dc, true)
                     .await;
             }
+            if let Some(skip_writer_id) = skip_writer_id {
+                candidate_indices.retain(|idx| writers_snapshot[*idx].id != skip_writer_id);
+            }
             if candidate_indices.is_empty() {
                 let pick_mode = self.writer_pick_mode();
                 match no_writer_mode {
@@ -422,7 +477,13 @@ impl MePool {
             self.stats.increment_me_writer_pick_blocking_fallback_total();
             let effective_our_addr = SocketAddr::new(w.source_ip, our_addr.port());
             let (payload, meta) = build_routed_payload(effective_our_addr);
-            match w.tx.send(WriterCommand::Data(payload.clone())).await {
+            match send_writer_command_with_timeout(
+                &w.tx,
+                WriterCommand::Data(payload.clone()),
+                self.me_route_blocking_send_timeout,
+            )
+            .await
+            {
                 Ok(()) => {
                     self.stats
                         .increment_me_writer_pick_success_fallback_total(pick_mode);
@@ -439,11 +500,20 @@ impl MePool {
                     }
                     return Ok(());
                 }
-                Err(_) => {
+                Err(TimedSendError::Closed(_)) => {
                     self.stats.increment_me_writer_pick_closed_total(pick_mode);
                     warn!(writer_id = w.id, "ME writer channel closed (blocking)");
                     self.remove_writer_and_close_clients(w.id).await;
                 }
+                Err(TimedSendError::Timeout(_)) => {
+                    self.stats.increment_me_writer_pick_full_total(pick_mode);
+                    debug!(
+                        conn_id,
+                        writer_id = w.id,
+                        timeout_ms = self.me_route_blocking_send_timeout.as_millis() as u64,
+                        "ME writer blocking fallback send timed out"
+                    );
+                }
             }
         }
     }

src/transport/mod.rs

@@ -2,6 +2,7 @@
 
 pub mod pool;
 pub mod proxy_protocol;
+pub mod shadowsocks;
 pub mod socket;
 pub mod socks;
 pub mod upstream;
@@ -14,5 +15,8 @@ pub use socket::*;
 #[allow(unused_imports)]
 pub use socks::*;
 #[allow(unused_imports)]
-pub use upstream::{DcPingResult, StartupPingResult, UpstreamEgressInfo, UpstreamManager, UpstreamRouteKind};
+pub use upstream::{
+    DcPingResult, StartupPingResult, UpstreamEgressInfo, UpstreamManager, UpstreamRouteKind,
+    UpstreamStream,
+};
 pub mod middle_proxy;

src/transport/shadowsocks.rs

@@ -0,0 +1,60 @@
+use std::net::{IpAddr, SocketAddr};
+use std::time::Duration;
+
+use shadowsocks::{
+    ProxyClientStream,
+    config::{ServerConfig, ServerType},
+    context::Context,
+    net::ConnectOpts,
+};
+
+use crate::error::{ProxyError, Result};
+
+pub(crate) type ShadowsocksStream = ProxyClientStream<shadowsocks::net::TcpStream>;
+
+fn parse_server_config(url: &str, connect_timeout: Duration) -> Result<ServerConfig> {
+    let mut config = ServerConfig::from_url(url)
+        .map_err(|error| ProxyError::Config(format!("invalid shadowsocks url: {error}")))?;
+
+    if config.plugin().is_some() {
+        return Err(ProxyError::Config(
+            "shadowsocks plugins are not supported".to_string(),
+        ));
+    }
+
+    config.set_timeout(connect_timeout);
+    Ok(config)
+}
+
+pub(crate) fn sanitize_shadowsocks_url(url: &str) -> Result<String> {
+    Ok(parse_server_config(url, Duration::from_secs(1))?
+        .addr()
+        .to_string())
+}
+
+fn connect_opts_for_interface(interface: &Option<String>) -> ConnectOpts {
+    let mut opts = ConnectOpts::default();
+    if let Some(interface) = interface {
+        if let Ok(ip) = interface.parse::<IpAddr>() {
+            opts.bind_local_addr = Some(SocketAddr::new(ip, 0));
+        } else {
+            opts.bind_interface = Some(interface.clone());
+        }
+    }
+    opts
+}
+
+pub(crate) async fn connect_shadowsocks(
+    url: &str,
+    interface: &Option<String>,
+    target: SocketAddr,
+    connect_timeout: Duration,
+) -> Result<ShadowsocksStream> {
+    let config = parse_server_config(url, connect_timeout)?;
+    let context = Context::new_shared(ServerType::Local);
+    let opts = connect_opts_for_interface(interface);
+
+    ProxyClientStream::connect_with_opts(context, &config, target, &opts)
+        .await
+        .map_err(ProxyError::Io)
+}

src/transport/upstream.rs

@@ -4,22 +4,28 @@
 
 #![allow(deprecated)]
 
+use rand::Rng;
 use std::collections::{BTreeSet, HashMap};
-use std::net::{SocketAddr, IpAddr};
+use std::net::{IpAddr, SocketAddr};
+use std::pin::Pin;
 use std::sync::Arc;
 use std::sync::atomic::{AtomicU64, AtomicUsize, Ordering};
+use std::task::{Context, Poll};
 use std::time::Duration;
+use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
 use tokio::net::TcpStream;
 use tokio::sync::RwLock;
 use tokio::time::Instant;
-use rand::Rng;
-use tracing::{debug, warn, info, trace};
+use tracing::{debug, info, trace, warn};
 
 use crate::config::{UpstreamConfig, UpstreamType};
-use crate::error::{Result, ProxyError};
+use crate::error::{ProxyError, Result};
 use crate::network::dns_overrides::{resolve_socket_addr, split_host_port};
-use crate::protocol::constants::{TG_DATACENTERS_V4, TG_DATACENTERS_V6, TG_DATACENTER_PORT};
+use crate::protocol::constants::{TG_DATACENTER_PORT, TG_DATACENTERS_V4, TG_DATACENTERS_V6};
 use crate::stats::Stats;
+use crate::transport::shadowsocks::{
+    ShadowsocksStream, connect_shadowsocks, sanitize_shadowsocks_url,
+};
 use crate::transport::socket::{create_outgoing_socket_bound, resolve_interface_ip};
 use crate::transport::socks::{connect_socks4, connect_socks5};
 
@@ -47,7 +53,10 @@ struct LatencyEma {
 
 impl LatencyEma {
     const fn new(alpha: f64) -> Self {
-        Self { value_ms: None, alpha }
+        Self {
+            value_ms: None,
+            alpha,
+        }
     }
 
     fn update(&mut self, sample_ms: f64) {
@@ -131,11 +140,17 @@ impl UpstreamState {
             return Some(ms);
         }
 
-        let (sum, count) = self.dc_latency.iter()
+        let (sum, count) = self
+            .dc_latency
+            .iter()
             .filter_map(|l| l.get())
             .fold((0.0, 0u32), |(s, c), v| (s + v, c + 1));
 
-        if count > 0 { Some(sum / count as f64) } else { None }
+        if count > 0 {
+            Some(sum / count as f64)
+        } else {
+            None
+        }
     }
 }
 
@@ -158,11 +173,78 @@ pub struct StartupPingResult {
     pub both_available: bool,
 }
 
+pub enum UpstreamStream {
+    Tcp(TcpStream),
+    Shadowsocks(Box<ShadowsocksStream>),
+}
+
+impl std::fmt::Debug for UpstreamStream {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Tcp(_) => f.write_str("UpstreamStream::Tcp(..)"),
+            Self::Shadowsocks(_) => f.write_str("UpstreamStream::Shadowsocks(..)"),
+        }
+    }
+}
+
+impl UpstreamStream {
+    pub fn into_tcp(self) -> Result<TcpStream> {
+        match self {
+            Self::Tcp(stream) => Ok(stream),
+            Self::Shadowsocks(_) => Err(ProxyError::Config(
+                "shadowsocks upstreams are not supported when general.use_middle_proxy = true"
+                    .to_string(),
+            )),
+        }
+    }
+}
+
+impl AsyncRead for UpstreamStream {
+    fn poll_read(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &mut ReadBuf<'_>,
+    ) -> Poll<std::io::Result<()>> {
+        match self.get_mut() {
+            Self::Tcp(stream) => Pin::new(stream).poll_read(cx, buf),
+            Self::Shadowsocks(stream) => Pin::new(stream.as_mut()).poll_read(cx, buf),
+        }
+    }
+}
+
+impl AsyncWrite for UpstreamStream {
+    fn poll_write(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &[u8],
+    ) -> Poll<std::io::Result<usize>> {
+        match self.get_mut() {
+            Self::Tcp(stream) => Pin::new(stream).poll_write(cx, buf),
+            Self::Shadowsocks(stream) => Pin::new(stream.as_mut()).poll_write(cx, buf),
+        }
+    }
+
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<std::io::Result<()>> {
+        match self.get_mut() {
+            Self::Tcp(stream) => Pin::new(stream).poll_flush(cx),
+            Self::Shadowsocks(stream) => Pin::new(stream.as_mut()).poll_flush(cx),
+        }
+    }
+
+    fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<std::io::Result<()>> {
+        match self.get_mut() {
+            Self::Tcp(stream) => Pin::new(stream).poll_shutdown(cx),
+            Self::Shadowsocks(stream) => Pin::new(stream.as_mut()).poll_shutdown(cx),
+        }
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum UpstreamRouteKind {
     Direct,
     Socks4,
     Socks5,
+    Shadowsocks,
 }
 
 #[derive(Debug, Clone)]
@@ -194,6 +276,7 @@ pub struct UpstreamApiSummarySnapshot {
     pub direct_total: usize,
     pub socks4_total: usize,
     pub socks5_total: usize,
+    pub shadowsocks_total: usize,
 }
 
 #[derive(Debug, Clone)]
@@ -253,7 +336,8 @@ impl UpstreamManager {
         connect_failfast_hard_errors: bool,
         stats: Arc<Stats>,
     ) -> Self {
-        let states = configs.into_iter()
+        let states = configs
+            .into_iter()
             .filter(|c| c.enabled)
             .map(UpstreamState::new)
             .collect();
@@ -311,20 +395,13 @@ impl UpstreamManager {
                 summary.unhealthy_total += 1;
             }
 
-            let (route_kind, address) = match &upstream.config.upstream_type {
-                UpstreamType::Direct { .. } => {
-                    summary.direct_total += 1;
-                    (UpstreamRouteKind::Direct, "direct".to_string())
-                }
-                UpstreamType::Socks4 { address, .. } => {
-                    summary.socks4_total += 1;
-                    (UpstreamRouteKind::Socks4, address.clone())
-                }
-                UpstreamType::Socks5 { address, .. } => {
-                    summary.socks5_total += 1;
-                    (UpstreamRouteKind::Socks5, address.clone())
-                }
-            };
+            let (route_kind, address) = Self::describe_upstream(&upstream.config.upstream_type);
+            match route_kind {
+                UpstreamRouteKind::Direct => summary.direct_total += 1,
+                UpstreamRouteKind::Socks4 => summary.socks4_total += 1,
+                UpstreamRouteKind::Socks5 => summary.socks5_total += 1,
+                UpstreamRouteKind::Shadowsocks => summary.shadowsocks_total += 1,
+            }
 
             let mut dc = Vec::with_capacity(NUM_DCS);
             for dc_idx in 0..NUM_DCS {
@@ -352,6 +429,18 @@ impl UpstreamManager {
         Some(UpstreamApiSnapshot { summary, upstreams })
     }
 
+    fn describe_upstream(upstream_type: &UpstreamType) -> (UpstreamRouteKind, String) {
+        match upstream_type {
+            UpstreamType::Direct { .. } => (UpstreamRouteKind::Direct, "direct".to_string()),
+            UpstreamType::Socks4 { address, .. } => (UpstreamRouteKind::Socks4, address.clone()),
+            UpstreamType::Socks5 { address, .. } => (UpstreamRouteKind::Socks5, address.clone()),
+            UpstreamType::Shadowsocks { url, .. } => (
+                UpstreamRouteKind::Shadowsocks,
+                sanitize_shadowsocks_url(url).unwrap_or_else(|_| "invalid".to_string()),
+            ),
+        }
+    }
+
     pub fn api_policy_snapshot(&self) -> UpstreamApiPolicySnapshot {
         UpstreamApiPolicySnapshot {
             connect_retry_attempts: self.connect_retry_attempts,
@@ -539,44 +628,44 @@ impl UpstreamManager {
         // Scope filter:
         //   If scope is set: only scoped and matched items
         //   If scope is not set: only unscoped items
-        let filtered_upstreams : Vec<usize> = upstreams.iter()
+        let filtered_upstreams: Vec<usize> = upstreams
+            .iter()
             .enumerate()
             .filter(|(_, u)| {
-                scope.map_or(
-                    u.config.scopes.is_empty(),
-                    |req_scope| {
-                        u.config.scopes
-                            .split(',')
-                            .map(str::trim)
-                            .any(|s| s == req_scope)
-                    }
-                )
+                scope.map_or(u.config.scopes.is_empty(), |req_scope| {
+                    u.config
+                        .scopes
+                        .split(',')
+                        .map(str::trim)
+                        .any(|s| s == req_scope)
+                })
             })
             .map(|(i, _)| i)
             .collect();
 
         // Healthy filter
-        let healthy: Vec<usize> = filtered_upstreams.iter()
+        let healthy: Vec<usize> = filtered_upstreams
+            .iter()
             .filter(|&&i| upstreams[i].healthy)
             .copied()
             .collect();
 
         if filtered_upstreams.is_empty() {
-            if Self::should_emit_warn(
-                self.no_upstreams_warn_epoch_ms.as_ref(),
-                5_000,
-            ) {
-                warn!(scope = scope, "No upstreams available! Using first (direct?)");
+            if Self::should_emit_warn(self.no_upstreams_warn_epoch_ms.as_ref(), 5_000) {
+                warn!(
+                    scope = scope,
+                    "No upstreams available! Using first (direct?)"
+                );
             }
             return None;
         }
 
         if healthy.is_empty() {
-            if Self::should_emit_warn(
-                self.no_healthy_warn_epoch_ms.as_ref(),
-                5_000,
-            ) {
-                warn!(scope = scope, "No healthy upstreams available! Using random.");
+            if Self::should_emit_warn(self.no_healthy_warn_epoch_ms.as_ref(), 5_000) {
+                warn!(
+                    scope = scope,
+                    "No healthy upstreams available! Using random."
+                );
             }
             return Some(filtered_upstreams[rand::rng().gen_range(0..filtered_upstreams.len())]);
         }
@@ -585,14 +674,18 @@ impl UpstreamManager {
             return Some(healthy[0]);
         }
 
-        let weights: Vec<(usize, f64)> = healthy.iter().map(|&i| {
-            let base = upstreams[i].config.weight as f64;
-            let latency_factor = upstreams[i].effective_latency(dc_idx)
-                .map(|ms| if ms > 1.0 { 1000.0 / ms } else { 1000.0 })
-                .unwrap_or(1.0);
+        let weights: Vec<(usize, f64)> = healthy
+            .iter()
+            .map(|&i| {
+                let base = upstreams[i].config.weight as f64;
+                let latency_factor = upstreams[i]
+                    .effective_latency(dc_idx)
+                    .map(|ms| if ms > 1.0 { 1000.0 / ms } else { 1000.0 })
+                    .unwrap_or(1.0);
 
-            (i, base * latency_factor)
-        }).collect();
+                (i, base * latency_factor)
+            })
+            .collect();
 
         let total: f64 = weights.iter().map(|(_, w)| w).sum();
 
@@ -620,8 +713,34 @@ impl UpstreamManager {
     }
 
     /// Connect to target through a selected upstream.
-    pub async fn connect(&self, target: SocketAddr, dc_idx: Option<i16>, scope: Option<&str>) -> Result<TcpStream> {
-        let (stream, _) = self.connect_with_details(target, dc_idx, scope).await?;
+    pub async fn connect(
+        &self,
+        target: SocketAddr,
+        dc_idx: Option<i16>,
+        scope: Option<&str>,
+    ) -> Result<UpstreamStream> {
+        let idx = self
+            .select_upstream(dc_idx, scope)
+            .await
+            .ok_or_else(|| ProxyError::Config("No upstreams available".to_string()))?;
+
+        let mut upstream = {
+            let guard = self.upstreams.read().await;
+            guard[idx].config.clone()
+        };
+
+        if let Some(s) = scope {
+            upstream.selected_scope = s.to_string();
+        }
+
+        let bind_rr = {
+            let guard = self.upstreams.read().await;
+            guard.get(idx).map(|u| u.bind_rr.clone())
+        };
+
+        let (stream, _) = self
+            .connect_selected_upstream(idx, upstream, target, dc_idx, bind_rr)
+            .await?;
         Ok(stream)
     }
 
@@ -632,7 +751,9 @@ impl UpstreamManager {
         dc_idx: Option<i16>,
         scope: Option<&str>,
     ) -> Result<(TcpStream, UpstreamEgressInfo)> {
-        let idx = self.select_upstream(dc_idx, scope).await
+        let idx = self
+            .select_upstream(dc_idx, scope)
+            .await
             .ok_or_else(|| ProxyError::Config("No upstreams available".to_string()))?;
 
         let mut upstream = {
@@ -650,6 +771,20 @@ impl UpstreamManager {
             guard.get(idx).map(|u| u.bind_rr.clone())
         };
 
+        let (stream, egress) = self
+            .connect_selected_upstream(idx, upstream, target, dc_idx, bind_rr)
+            .await?;
+        Ok((stream.into_tcp()?, egress))
+    }
+
+    async fn connect_selected_upstream(
+        &self,
+        idx: usize,
+        upstream: UpstreamConfig,
+        target: SocketAddr,
+        dc_idx: Option<i16>,
+        bind_rr: Option<Arc<AtomicUsize>>,
+    ) -> Result<(UpstreamStream, UpstreamEgressInfo)> {
         let connect_started_at = Instant::now();
         let mut last_error: Option<ProxyError> = None;
         let mut attempts_used = 0u32;
@@ -662,8 +797,8 @@ impl UpstreamManager {
                 break;
             }
             let remaining_budget = self.connect_budget.saturating_sub(elapsed);
-            let attempt_timeout = Duration::from_secs(DIRECT_CONNECT_TIMEOUT_SECS)
-                .min(remaining_budget);
+            let attempt_timeout =
+                Duration::from_secs(DIRECT_CONNECT_TIMEOUT_SECS).min(remaining_budget);
             if attempt_timeout.is_zero() {
                 last_error = Some(ProxyError::ConnectionTimeout {
                     addr: target.to_string(),
@@ -786,9 +921,12 @@ impl UpstreamManager {
         target: SocketAddr,
         bind_rr: Option<Arc<AtomicUsize>>,
         connect_timeout: Duration,
-    ) -> Result<(TcpStream, UpstreamEgressInfo)> {
+    ) -> Result<(UpstreamStream, UpstreamEgressInfo)> {
         match &config.upstream_type {
-            UpstreamType::Direct { interface, bind_addresses } => {
+            UpstreamType::Direct {
+                interface,
+                bind_addresses,
+            } => {
                 let bind_ip = Self::resolve_bind_address(
                     interface,
                     bind_addresses,
@@ -796,9 +934,7 @@ impl UpstreamManager {
                     bind_rr.as_deref(),
                     true,
                 );
-                if bind_ip.is_none()
-                    && bind_addresses.as_ref().is_some_and(|v| !v.is_empty())
-                {
+                if bind_ip.is_none() && bind_addresses.as_ref().is_some_and(|v| !v.is_empty()) {
                     return Err(ProxyError::Config(format!(
                         "No valid bind_addresses for target family {target}"
                     )));
@@ -813,8 +949,10 @@ impl UpstreamManager {
 
                 socket.set_nonblocking(true)?;
                 match socket.connect(&target.into()) {
-                    Ok(()) => {},
-                    Err(err) if err.raw_os_error() == Some(libc::EINPROGRESS) || err.kind() == std::io::ErrorKind::WouldBlock => {},
+                    Ok(()) => {}
+                    Err(err)
+                        if err.raw_os_error() == Some(libc::EINPROGRESS)
+                            || err.kind() == std::io::ErrorKind::WouldBlock => {}
                     Err(err) => return Err(ProxyError::Io(err)),
                 }
 
@@ -836,7 +974,7 @@ impl UpstreamManager {
 
                 let local_addr = stream.local_addr().ok();
                 Ok((
-                    stream,
+                    UpstreamStream::Tcp(stream),
                     UpstreamEgressInfo {
                         upstream_id,
                         route_kind: UpstreamRouteKind::Direct,
@@ -846,8 +984,12 @@ impl UpstreamManager {
                         socks_proxy_addr: None,
                     },
                 ))
-            },
-            UpstreamType::Socks4 { address, interface, user_id } => {
+            }
+            UpstreamType::Socks4 {
+                address,
+                interface,
+                user_id,
+            } => {
                 // Try to parse as SocketAddr first (IP:port), otherwise treat as hostname:port
                 let mut stream = if let Ok(proxy_addr) = address.parse::<SocketAddr>() {
                     // IP:port format - use socket with optional interface binding
@@ -863,8 +1005,10 @@ impl UpstreamManager {
 
                     socket.set_nonblocking(true)?;
                     match socket.connect(&proxy_addr.into()) {
-                        Ok(()) => {},
-                        Err(err) if err.raw_os_error() == Some(libc::EINPROGRESS) || err.kind() == std::io::ErrorKind::WouldBlock => {},
+                        Ok(()) => {}
+                        Err(err)
+                            if err.raw_os_error() == Some(libc::EINPROGRESS)
+                                || err.kind() == std::io::ErrorKind::WouldBlock => {}
                         Err(err) => return Err(ProxyError::Io(err)),
                     }
 
@@ -888,14 +1032,16 @@ impl UpstreamManager {
                     // Hostname:port format - use tokio DNS resolution
                     // Note: interface binding is not supported for hostnames
                     if interface.is_some() {
-                        warn!("SOCKS4 interface binding is not supported for hostname addresses, ignoring");
+                        warn!(
+                            "SOCKS4 interface binding is not supported for hostname addresses, ignoring"
+                        );
                     }
                     Self::connect_hostname_with_dns_override(address, connect_timeout).await?
                 };
 
                 // replace socks user_id with config.selected_scope, if set
-                let scope: Option<&str> = Some(config.selected_scope.as_str())
-                    .filter(|s| !s.is_empty());
+                let scope: Option<&str> =
+                    Some(config.selected_scope.as_str()).filter(|s| !s.is_empty());
                 let _user_id: Option<&str> = scope.or(user_id.as_deref());
 
                 let bound = match tokio::time::timeout(
@@ -915,7 +1061,7 @@ impl UpstreamManager {
                 let local_addr = stream.local_addr().ok();
                 let socks_proxy_addr = stream.peer_addr().ok();
                 Ok((
-                    stream,
+                    UpstreamStream::Tcp(stream),
                     UpstreamEgressInfo {
                         upstream_id,
                         route_kind: UpstreamRouteKind::Socks4,
@@ -925,8 +1071,13 @@ impl UpstreamManager {
                         socks_proxy_addr,
                     },
                 ))
-            },
-            UpstreamType::Socks5 { address, interface, username, password } => {
+            }
+            UpstreamType::Socks5 {
+                address,
+                interface,
+                username,
+                password,
+            } => {
                 // Try to parse as SocketAddr first (IP:port), otherwise treat as hostname:port
                 let mut stream = if let Ok(proxy_addr) = address.parse::<SocketAddr>() {
                     // IP:port format - use socket with optional interface binding
@@ -942,8 +1093,10 @@ impl UpstreamManager {
 
                     socket.set_nonblocking(true)?;
                     match socket.connect(&proxy_addr.into()) {
-                        Ok(()) => {},
-                        Err(err) if err.raw_os_error() == Some(libc::EINPROGRESS) || err.kind() == std::io::ErrorKind::WouldBlock => {},
+                        Ok(()) => {}
+                        Err(err)
+                            if err.raw_os_error() == Some(libc::EINPROGRESS)
+                                || err.kind() == std::io::ErrorKind::WouldBlock => {}
                         Err(err) => return Err(ProxyError::Io(err)),
                     }
 
@@ -967,15 +1120,17 @@ impl UpstreamManager {
                     // Hostname:port format - use tokio DNS resolution
                     // Note: interface binding is not supported for hostnames
                     if interface.is_some() {
-                        warn!("SOCKS5 interface binding is not supported for hostname addresses, ignoring");
+                        warn!(
+                            "SOCKS5 interface binding is not supported for hostname addresses, ignoring"
+                        );
                     }
                     Self::connect_hostname_with_dns_override(address, connect_timeout).await?
                 };
 
                 debug!(config = ?config, "Socks5 connection");
                 // replace socks user:pass with config.selected_scope, if set
-                let scope: Option<&str> = Some(config.selected_scope.as_str())
-                    .filter(|s| !s.is_empty());
+                let scope: Option<&str> =
+                    Some(config.selected_scope.as_str()).filter(|s| !s.is_empty());
                 let _username: Option<&str> = scope.or(username.as_deref());
                 let _password: Option<&str> = scope.or(password.as_deref());
 
@@ -996,7 +1151,7 @@ impl UpstreamManager {
                 let local_addr = stream.local_addr().ok();
                 let socks_proxy_addr = stream.peer_addr().ok();
                 Ok((
-                    stream,
+                    UpstreamStream::Tcp(stream),
                     UpstreamEgressInfo {
                         upstream_id,
                         route_kind: UpstreamRouteKind::Socks5,
@@ -1006,7 +1161,22 @@ impl UpstreamManager {
                         socks_proxy_addr,
                     },
                 ))
-            },
+            }
+            UpstreamType::Shadowsocks { url, interface } => {
+                let stream = connect_shadowsocks(url, interface, target, connect_timeout).await?;
+                let local_addr = stream.get_ref().local_addr().ok();
+                    Ok((
+                        UpstreamStream::Shadowsocks(Box::new(stream)),
+                        UpstreamEgressInfo {
+                        upstream_id,
+                        route_kind: UpstreamRouteKind::Shadowsocks,
+                        local_addr,
+                        direct_bind_ip: None,
+                        socks_bound_addr: None,
+                        socks_proxy_addr: None,
+                    },
+                ))
+            }
         }
     }
 
@@ -1023,7 +1193,9 @@ impl UpstreamManager {
     ) -> Vec<StartupPingResult> {
         let upstreams: Vec<(usize, UpstreamConfig, Arc<AtomicUsize>)> = {
             let guard = self.upstreams.read().await;
-            guard.iter().enumerate()
+            guard
+                .iter()
+                .enumerate()
                 .map(|(i, u)| (i, u.config.clone(), u.bind_rr.clone()))
                 .collect()
         };
@@ -1051,6 +1223,11 @@ impl UpstreamManager {
                 }
                 UpstreamType::Socks4 { address, .. } => format!("socks4://{}", address),
                 UpstreamType::Socks5 { address, .. } => format!("socks5://{}", address),
+                UpstreamType::Shadowsocks { url, .. } => {
+                    let address =
+                        sanitize_shadowsocks_url(url).unwrap_or_else(|_| "invalid".to_string());
+                    format!("shadowsocks://{address}")
+                }
             };
 
             let mut v6_results = Vec::with_capacity(NUM_DCS);
@@ -1061,8 +1238,14 @@ impl UpstreamManager {
 
                     let result = tokio::time::timeout(
                         Duration::from_secs(DC_PING_TIMEOUT_SECS),
-                        self.ping_single_dc(*upstream_idx, upstream_config, Some(bind_rr.clone()), addr_v6)
-                    ).await;
+                        self.ping_single_dc(
+                            *upstream_idx,
+                            upstream_config,
+                            Some(bind_rr.clone()),
+                            addr_v6,
+                        ),
+                    )
+                    .await;
 
                     let ping_result = match result {
                         Ok(Ok(rtt_ms)) => {
@@ -1112,8 +1295,14 @@ impl UpstreamManager {
 
                     let result = tokio::time::timeout(
                         Duration::from_secs(DC_PING_TIMEOUT_SECS),
-                        self.ping_single_dc(*upstream_idx, upstream_config, Some(bind_rr.clone()), addr_v4)
-                    ).await;
+                        self.ping_single_dc(
+                            *upstream_idx,
+                            upstream_config,
+                            Some(bind_rr.clone()),
+                            addr_v4,
+                        ),
+                    )
+                    .await;
 
                     let ping_result = match result {
                         Ok(Ok(rtt_ms)) => {
@@ -1162,7 +1351,7 @@ impl UpstreamManager {
                     Err(_) => {
                         warn!(dc = %dc_key, "Invalid dc_overrides key, skipping");
                         continue;
-                    },
+                    }
                     _ => continue,
                 };
                 let dc_idx = dc_num as usize;
@@ -1175,8 +1364,14 @@ impl UpstreamManager {
                             }
                             let result = tokio::time::timeout(
                                 Duration::from_secs(DC_PING_TIMEOUT_SECS),
-                                self.ping_single_dc(*upstream_idx, upstream_config, Some(bind_rr.clone()), addr)
-                            ).await;
+                                self.ping_single_dc(
+                                    *upstream_idx,
+                                    upstream_config,
+                                    Some(bind_rr.clone()),
+                                    addr,
+                                ),
+                            )
+                            .await;
 
                             let ping_result = match result {
                                 Ok(Ok(rtt_ms)) => DcPingResult {
@@ -1205,7 +1400,9 @@ impl UpstreamManager {
                                 v4_results.push(ping_result);
                             }
                         }
-                        Err(_) => warn!(dc = %dc_idx, addr = %addr_str, "Invalid dc_overrides address, skipping"),
+                        Err(_) => {
+                            warn!(dc = %dc_idx, addr = %addr_str, "Invalid dc_overrides address, skipping")
+                        }
                     }
                 }
             }
@@ -1381,12 +1578,8 @@ impl UpstreamManager {
         ipv6_enabled: bool,
         dc_overrides: HashMap<String, Vec<String>>,
     ) {
-        let groups = Self::build_health_check_groups(
-            prefer_ipv6,
-            ipv4_enabled,
-            ipv6_enabled,
-            &dc_overrides,
-        );
+        let groups =
+            Self::build_health_check_groups(prefer_ipv6, ipv4_enabled, ipv6_enabled, &dc_overrides);
         let required_healthy_groups = Self::required_healthy_group_count(groups.len());
         let mut endpoint_rotation: HashMap<(usize, i16, bool), usize> = HashMap::new();
 
@@ -1416,13 +1609,16 @@ impl UpstreamManager {
                     let mut group_ok = false;
                     let mut group_rtt_ms = None;
 
-                    for (is_primary, endpoints) in [(true, &group.primary), (false, &group.fallback)] {
+                    for (is_primary, endpoints) in
+                        [(true, &group.primary), (false, &group.fallback)]
+                    {
                         if endpoints.is_empty() {
                             continue;
                         }
 
                         let rotation_key = (i, group.dc_idx, is_primary);
-                        let start_idx = *endpoint_rotation.entry(rotation_key).or_insert(0) % endpoints.len();
+                        let start_idx =
+                            *endpoint_rotation.entry(rotation_key).or_insert(0) % endpoints.len();
                         let mut next_idx = (start_idx + 1) % endpoints.len();
 
                         for step in 0..endpoints.len() {
@@ -1544,8 +1740,7 @@ impl UpstreamManager {
             return None;
         }
 
-        UpstreamState::dc_array_idx(dc_idx)
-            .map(|idx| guard[0].dc_ip_pref[idx])
+        UpstreamState::dc_array_idx(dc_idx).map(|idx| guard[0].dc_ip_pref[idx])
     }
 
     /// Get preferred DC address based on config preference
@@ -1566,6 +1761,12 @@ impl UpstreamManager {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use std::sync::Arc;
+
+    use crate::stats::Stats;
+
+    const TEST_SHADOWSOCKS_URL: &str =
+        "ss://2022-blake3-aes-256-gcm:MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDE=@127.0.0.1:8388";
 
     #[test]
     fn required_healthy_group_count_applies_three_group_threshold() {
@@ -1596,15 +1797,18 @@ mod tests {
 
         assert!(dc2.primary.iter().all(|addr| addr.is_ipv6()));
         assert!(dc2.fallback.iter().all(|addr| addr.is_ipv4()));
-        assert!(dc2
-            .primary
-            .contains(&"[2001:db8::10]:443".parse::<SocketAddr>().unwrap()));
-        assert!(dc2
-            .fallback
-            .contains(&"203.0.113.10:443".parse::<SocketAddr>().unwrap()));
-        assert!(dc2
-            .fallback
-            .contains(&"203.0.113.11:443".parse::<SocketAddr>().unwrap()));
+        assert!(
+            dc2.primary
+                .contains(&"[2001:db8::10]:443".parse::<SocketAddr>().unwrap())
+        );
+        assert!(
+            dc2.fallback
+                .contains(&"203.0.113.10:443".parse::<SocketAddr>().unwrap())
+        );
+        assert!(
+            dc2.fallback
+                .contains(&"203.0.113.11:443".parse::<SocketAddr>().unwrap())
+        );
     }
 
     #[test]
@@ -1626,12 +1830,14 @@ mod tests {
             .expect("override-only dc group must be present");
 
         assert_eq!(dc9.primary.len(), 2);
-        assert!(dc9
-            .primary
-            .contains(&"198.51.100.1:443".parse::<SocketAddr>().unwrap()));
-        assert!(dc9
-            .primary
-            .contains(&"198.51.100.2:443".parse::<SocketAddr>().unwrap()));
+        assert!(
+            dc9.primary
+                .contains(&"198.51.100.1:443".parse::<SocketAddr>().unwrap())
+        );
+        assert!(
+            dc9.primary
+                .contains(&"198.51.100.2:443".parse::<SocketAddr>().unwrap())
+        );
         assert!(dc9.fallback.is_empty());
     }
 
@@ -1678,4 +1884,36 @@ mod tests {
 
         assert_eq!(bind, None);
     }
+
+    #[test]
+    fn api_snapshot_reports_shadowsocks_as_sanitized_route() {
+        let manager = UpstreamManager::new(
+            vec![UpstreamConfig {
+                upstream_type: UpstreamType::Shadowsocks {
+                    url: TEST_SHADOWSOCKS_URL.to_string(),
+                    interface: None,
+                },
+                weight: 2,
+                enabled: true,
+                scopes: String::new(),
+                selected_scope: String::new(),
+            }],
+            1,
+            100,
+            1000,
+            1,
+            false,
+            Arc::new(Stats::new()),
+        );
+
+        let snapshot = manager.try_api_snapshot().expect("snapshot");
+        assert_eq!(snapshot.summary.configured_total, 1);
+        assert_eq!(snapshot.summary.shadowsocks_total, 1);
+        assert_eq!(snapshot.upstreams.len(), 1);
+        assert_eq!(
+            snapshot.upstreams[0].route_kind,
+            UpstreamRouteKind::Shadowsocks
+        );
+        assert_eq!(snapshot.upstreams[0].address, "127.0.0.1:8388");
+    }
 }