From b6206a6dfebe92bf6689e03983e77a42e7c2ad10 Mon Sep 17 00:00:00 2001
From: kavore <161734431+kavore@users.noreply.github.com>
Date: Mon, 16 Mar 2026 20:40:10 +0300
Subject: [PATCH 1/4] feat: make max_connections configurable via [server]
 section

The concurrent connection limit was hardcoded to 10,000.
Add server.max_connections config option (default: 10000, 0 = unlimited).
---
 src/config/defaults.rs | 4 ++++
 src/config/types.rs    | 6 ++++++
 src/maestro/mod.rs     | 9 +++++++--
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/config/defaults.rs b/src/config/defaults.rs
index 82ec0b3..ea9250d 100644
--- a/src/config/defaults.rs
+++ b/src/config/defaults.rs
@@ -147,6 +147,10 @@ pub(crate) fn default_proxy_protocol_header_timeout_ms() -> u64 {
     500
 }
 
+pub(crate) fn default_server_max_connections() -> u32 {
+    10_000
+}
+
 pub(crate) fn default_prefer_4() -> u8 {
     4
 }
diff --git a/src/config/types.rs b/src/config/types.rs
index 04a22ce..f676f54 100644
--- a/src/config/types.rs
+++ b/src/config/types.rs
@@ -1167,6 +1167,11 @@ pub struct ServerConfig {
 
     #[serde(default)]
     pub listeners: Vec<ListenerConfig>,
+
+    /// Maximum number of concurrent client connections.
+    /// 0 means unlimited.
+    #[serde(default = "default_server_max_connections")]
+    pub max_connections: u32,
 }
 
 impl Default for ServerConfig {
@@ -1184,6 +1189,7 @@ impl Default for ServerConfig {
             metrics_whitelist: default_metrics_whitelist(),
             api: ApiConfig::default(),
             listeners: Vec::new(),
+            max_connections: default_server_max_connections(),
         }
     }
 }
diff --git a/src/maestro/mod.rs b/src/maestro/mod.rs
index 047c204..da00b40 100644
--- a/src/maestro/mod.rs
+++ b/src/maestro/mod.rs
@@ -349,8 +349,13 @@ pub async fn run() -> std::result::Result<(), Box<dyn std::error::Error>> {
     let beobachten = Arc::new(BeobachtenStore::new());
     let rng = Arc::new(SecureRandom::new());
 
-    // Connection concurrency limit
-    let max_connections = Arc::new(Semaphore::new(10_000));
+    // Connection concurrency limit (0 = unlimited)
+    let max_connections_limit = if config.server.max_connections == 0 {
+        Semaphore::MAX_PERMITS
+    } else {
+        config.server.max_connections as usize
+    };
+    let max_connections = Arc::new(Semaphore::new(max_connections_limit));
 
     let me2dc_fallback = config.general.me2dc_fallback;
     let me_init_retry_attempts = config.general.me_init_retry_attempts;

From 2c10560795c4c25c8f8d235a439a927488f0f57c Mon Sep 17 00:00:00 2001
From: Alexey <247128645+axkurcom@users.noreply.github.com>
Date: Mon, 16 Mar 2026 21:25:14 +0300
Subject: [PATCH 2/4] Update Cargo.toml

---
 Cargo.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index ac529af..9374924 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "telemt"
-version = "3.3.18"
+version = "3.3.19"
 edition = "2024"
 
 [dependencies]

From ee4d15fed64c56b12c8b06155b0894493961e7f5 Mon Sep 17 00:00:00 2001
From: Dimasssss <Dimasssss2000@gmail.com>
Date: Mon, 16 Mar 2026 22:02:55 +0300
Subject: [PATCH 3/4] Update FAQ.ru.md

---
 docs/FAQ.ru.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/FAQ.ru.md b/docs/FAQ.ru.md
index cb5db7f..4353e98 100644
--- a/docs/FAQ.ru.md
+++ b/docs/FAQ.ru.md
@@ -83,6 +83,13 @@ metrics_whitelist = ["127.0.0.1/32", "::1/128", "0.0.0.0/0"]
 public_host = "proxy.example.com"
 ```
 
+### Общий лимит подключений к серверу
+Ограничивает общее число открытых подключений к серверу:
+```toml
+[server]
+max_connections = 10000    # 0 - unlimited, 10000 - default
+```
+
 ### Upstream Manager
 Чтобы указать апстрим, добавьте в секцию `[[upstreams]]` файла config.toml:
 #### Привязка к IP
@@ -113,3 +120,4 @@ password = "pass"          # Password for Auth on SOCKS-server
 weight = 1                 # Set Weight for Scenarios
 enabled = true
 ```
+

From e1ef192c1096a34945464017dc03eef62a110ad5 Mon Sep 17 00:00:00 2001
From: Dimasssss <Dimasssss2000@gmail.com>
Date: Mon, 16 Mar 2026 22:03:28 +0300
Subject: [PATCH 4/4] Update FAQ.en.md

---
 docs/FAQ.en.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/docs/FAQ.en.md b/docs/FAQ.en.md
index e3a6519..25522ad 100644
--- a/docs/FAQ.en.md
+++ b/docs/FAQ.en.md
@@ -83,6 +83,13 @@ To specify a domain in the links, add to the `[general.links]` section of the co
 public_host = "proxy.example.com"
 ```
 
+### Server connection limit
+Limits the total number of open connections to the server:
+```toml
+[server]
+max_connections = 10000    # 0 - unlimited, 10000 - default
+```
+
 ### Upstream Manager
 To specify an upstream, add to the `[[upstreams]]` section of the config.toml file:
 #### Binding to IP