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fix(outbound): measure HTTP test delay on a warm connection

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Since the batched prober replaced the single tester, the reported delay
came from one cold request with keep-alives disabled, so it stacked the
SOCKS handshake, proxy dial, proxy TLS, target TCP and target TLS on top
of the round-trip. Users upgrading from v2.9.4 - whose tester warmed the
connection first and timed a second request - saw several times the real
connection time.

The cold request still proves reachability and supplies the HTTP status
plus the connect/TLS/TTFB breakdown; the delay is now re-measured on a
second request over the kept-alive connection, falling back to the cold
total when the warm request fails. Bodies are drained (bounded) so the
connection returns to the pool, and the batch test asserts both requests
of a probe share one connection.
This commit is contained in:
MHSanaei
2026-07-05 20:19:25 +02:00
parent b6183271da
commit b6873c7a73
4 changed files with 80 additions and 18 deletions
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internal/web/service/outbound/outbound.go
+3 -2
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@@ -111,8 +111,9 @@ func (s *OutboundService) ResetOutboundTraffic(tag string) error {
// TestOutboundResult represents the result of testing an outbound.
// Delay is in milliseconds. Endpoints is only populated for TCP-mode
// probes; HTTP mode reports the time of a real HTTP request routed
// through the outbound, with an optional timing breakdown.
// probes; HTTP mode reports the round-trip of a real HTTP request on an
// established connection through the outbound (the cold first request
// supplies the timing breakdown).
type TestOutboundResult struct {
Tag string `json:"tag,omitempty"`
Success bool `json:"success"`