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TLS Fetcher fixes

This commit is contained in:
Alexey 2026-03-23 23:12:50 +03:00
parent 8bc432db49
commit 655a08fa5c
No known key found for this signature in database
1 changed files with 22 additions and 10 deletions
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32
src/tls_front/fetcher.rs
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@ -108,16 +108,28 @@ fn build_client_hello(sni: &str, rng: &SecureRandom) -> Vec<u8> {
// Session ID: empty
body.push(0);
// Cipher suites (common minimal set, TLS1.3 + a few 1.2 fallbacks)
let cipher_suites: [u8; 10] = [
0x13, 0x01, // TLS_AES_128_GCM_SHA256
0x13, 0x02, // TLS_AES_256_GCM_SHA384
0x13, 0x03, // TLS_CHACHA20_POLY1305_SHA256
0x00, 0x2f, // TLS_RSA_WITH_AES_128_CBC_SHA (legacy)
0x00, 0xff, // RENEGOTIATION_INFO_SCSV
// Cipher suites:
// - TLS1.3 set
// - broad TLS1.2 ECDHE set for RSA/ECDSA cert chains
// This keeps raw probing compatible with common production frontends that
// still negotiate TLS1.2.
let cipher_suites: [u16; 11] = [
0x1301, // TLS_AES_128_GCM_SHA256
0x1302, // TLS_AES_256_GCM_SHA384
0x1303, // TLS_CHACHA20_POLY1305_SHA256
0xc02b, // TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
0xc02c, // TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
0xcca9, // TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
0xc02f, // TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
0xc030, // TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
0xcca8, // TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
0x009e, // TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
0x00ff, // TLS_EMPTY_RENEGOTIATION_INFO_SCSV
];
body.extend_from_slice(&(cipher_suites.len() as u16).to_be_bytes());
body.extend_from_slice(&cipher_suites);
body.extend_from_slice(&((cipher_suites.len() * 2) as u16).to_be_bytes());
for suite in cipher_suites {
body.extend_from_slice(&suite.to_be_bytes());
}
// Compression methods: null only
body.push(1);
@ -147,7 +159,7 @@ fn build_client_hello(sni: &str, rng: &SecureRandom) -> Vec<u8> {
}
// signature_algorithms
let sig_algs: [u16; 4] = [0x0804, 0x0805, 0x0403, 0x0503]; // rsa_pss_rsae_sha256/384, ecdsa_secp256r1_sha256, rsa_pkcs1_sha256
let sig_algs: [u16; 4] = [0x0804, 0x0805, 0x0403, 0x0503]; // rsa_pss_rsae_sha256/384, ecdsa_secp256r1_sha256, ecdsa_secp384r1_sha384
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());