Drafting fixes for Apple/XNU Darwin Connectivity issues

Co-Authored-By: Aleksandr Kalashnikov <33665156+sleep3r@users.noreply.github.com>
This commit is contained in:
Alexey
2026-03-30 23:35:41 +03:00
parent 07d774a82a
commit 65da1f91ec
7 changed files with 499 additions and 50 deletions

View File

@@ -416,16 +416,68 @@ where
debug!(peer = %real_peer, "New connection (generic stream)");
let first_byte = if config.timeouts.client_first_byte_idle_secs == 0 {
None
} else {
let idle_timeout = Duration::from_secs(config.timeouts.client_first_byte_idle_secs);
let mut first_byte = [0u8; 1];
match timeout(idle_timeout, stream.read(&mut first_byte)).await {
Ok(Ok(0)) => {
debug!(peer = %real_peer, "Connection closed before first client byte");
return Ok(());
}
Ok(Ok(_)) => Some(first_byte[0]),
Ok(Err(e))
if matches!(
e.kind(),
std::io::ErrorKind::UnexpectedEof
| std::io::ErrorKind::ConnectionReset
| std::io::ErrorKind::ConnectionAborted
| std::io::ErrorKind::BrokenPipe
| std::io::ErrorKind::NotConnected
) =>
{
debug!(
peer = %real_peer,
error = %e,
"Connection closed before first client byte"
);
return Ok(());
}
Ok(Err(e)) => {
debug!(
peer = %real_peer,
error = %e,
"Failed while waiting for first client byte"
);
return Err(ProxyError::Io(e));
}
Err(_) => {
debug!(
peer = %real_peer,
idle_secs = config.timeouts.client_first_byte_idle_secs,
"Closing idle pooled connection before first client byte"
);
return Ok(());
}
}
};
let handshake_timeout = handshake_timeout_with_mask_grace(&config);
let stats_for_timeout = stats.clone();
let config_for_timeout = config.clone();
let beobachten_for_timeout = beobachten.clone();
let peer_for_timeout = real_peer.ip();
// Phase 1: handshake (with timeout)
// Phase 2: active handshake (with timeout after the first client byte)
let outcome = match timeout(handshake_timeout, async {
let mut first_bytes = [0u8; 5];
stream.read_exact(&mut first_bytes).await?;
if let Some(first_byte) = first_byte {
first_bytes[0] = first_byte;
stream.read_exact(&mut first_bytes[1..]).await?;
} else {
stream.read_exact(&mut first_bytes).await?;
}
let is_tls = tls::is_tls_handshake(&first_bytes[..3]);
debug!(peer = %real_peer, is_tls = is_tls, "Handshake type detected");
@@ -736,36 +788,9 @@ impl RunningClientHandler {
debug!(peer = %peer, error = %e, "Failed to configure client socket");
}
let handshake_timeout = handshake_timeout_with_mask_grace(&self.config);
let stats = self.stats.clone();
let config_for_timeout = self.config.clone();
let beobachten_for_timeout = self.beobachten.clone();
let peer_for_timeout = peer.ip();
// Phase 1: handshake (with timeout)
let outcome = match timeout(handshake_timeout, self.do_handshake()).await {
Ok(Ok(outcome)) => outcome,
Ok(Err(e)) => {
debug!(peer = %peer, error = %e, "Handshake failed");
record_handshake_failure_class(
&beobachten_for_timeout,
&config_for_timeout,
peer_for_timeout,
&e,
);
return Err(e);
}
Err(_) => {
stats.increment_handshake_timeouts();
debug!(peer = %peer, "Handshake timeout");
record_beobachten_class(
&beobachten_for_timeout,
&config_for_timeout,
peer_for_timeout,
"other",
);
return Err(ProxyError::TgHandshakeTimeout);
}
let outcome = match self.do_handshake().await? {
Some(outcome) => outcome,
None => return Ok(()),
};
// Phase 2: relay (WITHOUT handshake timeout — relay has its own activity timeouts)
@@ -774,7 +799,7 @@ impl RunningClientHandler {
}
}
async fn do_handshake(mut self) -> Result<HandshakeOutcome> {
async fn do_handshake(mut self) -> Result<Option<HandshakeOutcome>> {
let mut local_addr = self.stream.local_addr().map_err(ProxyError::Io)?;
if self.proxy_protocol_enabled {
@@ -849,19 +874,107 @@ impl RunningClientHandler {
}
}
let mut first_bytes = [0u8; 5];
self.stream.read_exact(&mut first_bytes).await?;
let is_tls = tls::is_tls_handshake(&first_bytes[..3]);
let peer = self.peer;
debug!(peer = %peer, is_tls = is_tls, "Handshake type detected");
if is_tls {
self.handle_tls_client(first_bytes, local_addr).await
let first_byte = if self.config.timeouts.client_first_byte_idle_secs == 0 {
None
} else {
self.handle_direct_client(first_bytes, local_addr).await
}
let idle_timeout = Duration::from_secs(self.config.timeouts.client_first_byte_idle_secs);
let mut first_byte = [0u8; 1];
match timeout(idle_timeout, self.stream.read(&mut first_byte)).await {
Ok(Ok(0)) => {
debug!(peer = %self.peer, "Connection closed before first client byte");
return Ok(None);
}
Ok(Ok(_)) => Some(first_byte[0]),
Ok(Err(e))
if matches!(
e.kind(),
std::io::ErrorKind::UnexpectedEof
| std::io::ErrorKind::ConnectionReset
| std::io::ErrorKind::ConnectionAborted
| std::io::ErrorKind::BrokenPipe
| std::io::ErrorKind::NotConnected
) =>
{
debug!(
peer = %self.peer,
error = %e,
"Connection closed before first client byte"
);
return Ok(None);
}
Ok(Err(e)) => {
debug!(
peer = %self.peer,
error = %e,
"Failed while waiting for first client byte"
);
return Err(ProxyError::Io(e));
}
Err(_) => {
debug!(
peer = %self.peer,
idle_secs = self.config.timeouts.client_first_byte_idle_secs,
"Closing idle pooled connection before first client byte"
);
return Ok(None);
}
}
};
let handshake_timeout = handshake_timeout_with_mask_grace(&self.config);
let stats = self.stats.clone();
let config_for_timeout = self.config.clone();
let beobachten_for_timeout = self.beobachten.clone();
let peer_for_timeout = self.peer.ip();
let peer_for_log = self.peer;
let outcome = match timeout(handshake_timeout, async {
let mut first_bytes = [0u8; 5];
if let Some(first_byte) = first_byte {
first_bytes[0] = first_byte;
self.stream.read_exact(&mut first_bytes[1..]).await?;
} else {
self.stream.read_exact(&mut first_bytes).await?;
}
let is_tls = tls::is_tls_handshake(&first_bytes[..3]);
let peer = self.peer;
debug!(peer = %peer, is_tls = is_tls, "Handshake type detected");
if is_tls {
self.handle_tls_client(first_bytes, local_addr).await
} else {
self.handle_direct_client(first_bytes, local_addr).await
}
})
.await
{
Ok(Ok(outcome)) => outcome,
Ok(Err(e)) => {
debug!(peer = %peer_for_log, error = %e, "Handshake failed");
record_handshake_failure_class(
&beobachten_for_timeout,
&config_for_timeout,
peer_for_timeout,
&e,
);
return Err(e);
}
Err(_) => {
stats.increment_handshake_timeouts();
debug!(peer = %peer_for_log, "Handshake timeout");
record_beobachten_class(
&beobachten_for_timeout,
&config_for_timeout,
peer_for_timeout,
"other",
);
return Err(ProxyError::TgHandshakeTimeout);
}
};
Ok(Some(outcome))
}
async fn handle_tls_client(