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feat: user configured MTU automatically subtracts 48 for overhead compensation

This commit is contained in:
ospab 2026-05-30 22:24:08 +03:00
parent c9fad99144
commit 2fbdd4578d
4 changed files with 7 additions and 5 deletions
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4
ostp-client/src/bridge.rs
View File

@ -103,7 +103,7 @@ impl Bridge {
stealth_sni: config.transport.stealth_sni.clone(),
stealth_port: config.transport.stealth_port,
wss: config.transport.wss,
mtu: config.ostp.mtu,
mtu: config.ostp.mtu.saturating_sub(48).max(500),
reality_enabled: config.reality.enabled,
reality_pbk: config.reality.pbk.clone(),
reality_sid: config.reality.sid.clone(),
@ -936,7 +936,7 @@ impl Bridge {
self.reality_enabled = cfg.reality.enabled;
self.reality_pbk = cfg.reality.pbk.clone();
self.reality_sid = cfg.reality.sid.clone();
self.mtu = cfg.ostp.mtu; // Fix: mtu was never updated on hot-reload
self.mtu = cfg.ostp.mtu.saturating_sub(48).max(500); // Fix: mtu was never updated on hot-reload
self.keepalive_interval_sec = cfg.ostp.keepalive_interval_sec; // Fix: keepalive was never updated on hot-reload
}

2
ostp-client/src/config.rs
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@ -58,7 +58,7 @@ pub struct OstpConfig {
fn default_keepalive() -> u64 { 5 }
fn default_mtu() -> usize { 1140 }
fn default_mtu() -> usize { 1280 }
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct LocalProxyConfig {

2
ostp-client/src/tunnel/native_handler.rs
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@ -31,7 +31,7 @@ pub async fn run_native_tunnel(
.address((10, 1, 0, 2))
.netmask((255, 255, 255, 0))
.destination((10, 1, 0, 1))
.mtu(config.ostp.mtu as u16)
.mtu(config.ostp.mtu.saturating_sub(48).max(500) as u16)
.up();
#[cfg(target_os = "linux")]

4
ostp-flutter/android/app/src/main/kotlin/com/ospab/ostp_client/OstpVpnService.kt
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@ -161,7 +161,9 @@ class OstpVpnService : VpnService() {
.addRoute("0.0.0.0", 0)
.addRoute("::", 0)
.addDnsServer(dnsServer)
.setMtu(json.optJSONObject("ostp")?.optInt("mtu", 1140) ?: 1140)
val configuredMtu = json.optJSONObject("ostp")?.optInt("mtu", 1280) ?: 1280
builder.setMtu(configuredMtu - 48)
try { builder.addDnsServer("8.8.8.8") } catch (e: Throwable) {}