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feat(smart-proxy): add UDP transport support with QUIC/HTTP3 routing and datagram handler relay

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This commit is contained in:
Jürgen Kunz
2026-03-19 15:06:27 +00:00
parent cfa958cf3d
commit 4fb91cd868
34 changed files with 2978 additions and 55 deletions
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18
rust/crates/rustproxy-http/src/proxy_service.rs
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@@ -451,6 +451,7 @@ impl HttpProxyService {
headers: headers.as_ref(),
is_tls: false,
protocol: Some("http"),
transport: None,
};
let route_match = match current_rm.find_route(&ctx) {
@@ -647,6 +648,11 @@ impl HttpProxyService {
let (use_h2, needs_alpn_probe) = match backend_protocol_mode {
rustproxy_config::BackendProtocol::Http1 => (false, false),
rustproxy_config::BackendProtocol::Http2 => (true, false),
rustproxy_config::BackendProtocol::Http3 => {
// HTTP/3 (QUIC) backend connections not yet implemented — fall back to H1
warn!("backendProtocol 'http3' not yet implemented, falling back to http1");
(false, false)
}
rustproxy_config::BackendProtocol::Auto => {
if !upstream.use_tls {
// No ALPN without TLS — default to H1
@@ -660,6 +666,10 @@ impl HttpProxyService {
match self.protocol_cache.get(&cache_key) {
Some(crate::protocol_cache::DetectedProtocol::H2) => (true, false),
Some(crate::protocol_cache::DetectedProtocol::H1) => (false, false),
Some(crate::protocol_cache::DetectedProtocol::H3) => {
// H3 cached but we're on TCP — fall back to H2 probe
(false, true)
}
None => (false, true), // needs ALPN probe
}
}
@@ -673,7 +683,7 @@ impl HttpProxyService {
host: upstream.host.clone(),
port: upstream.port,
use_tls: upstream.use_tls,
h2: use_h2,
protocol: if use_h2 { crate::connection_pool::PoolProtocol::H2 } else { crate::connection_pool::PoolProtocol::H1 },
};
// H2 pool checkout — reuse pooled connections for all requests.
@@ -832,7 +842,7 @@ impl HttpProxyService {
host: upstream.host.clone(),
port: upstream.port,
use_tls: upstream.use_tls,
h2: detected_h2,
protocol: if detected_h2 { crate::connection_pool::PoolProtocol::H2 } else { crate::connection_pool::PoolProtocol::H1 },
};
let io = TokioIo::new(backend);
@@ -1298,7 +1308,7 @@ impl HttpProxyService {
host: upstream.host.clone(),
port: upstream.port,
use_tls: upstream.use_tls,
h2: false,
protocol: crate::connection_pool::PoolProtocol::H1,
};
let fallback_io = TokioIo::new(fallback_backend);
let result = self.forward_h1(
@@ -1438,7 +1448,7 @@ impl HttpProxyService {
host: upstream.host.clone(),
port: upstream.port,
use_tls: upstream.use_tls,
h2: false,
protocol: crate::connection_pool::PoolProtocol::H1,
};
let fallback_io = TokioIo::new(fallback_backend);
let result = self.forward_h1(