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Configure timeout for HTTP2 transport

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Otherwise, a stale TCP connection may still alive for too long, causing
unexpected failed to connect upstream error when network changed.
This commit is contained in:
Cuong Manh Le
2024-08-29 22:26:41 +07:00
committed by Cuong Manh Le
parent 70b0c4f7b9
commit 33a6db2599
1 changed files with 8 additions and 0 deletions
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8
config.go
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@@ -25,6 +25,7 @@ import (
"github.com/go-playground/validator/v10" "github.com/go-playground/validator/v10"
"github.com/miekg/dns" "github.com/miekg/dns"
"github.com/spf13/viper" "github.com/spf13/viper"
"golang.org/x/net/http2"
"golang.org/x/sync/singleflight" "golang.org/x/sync/singleflight"
"tailscale.com/logtail/backoff" "tailscale.com/logtail/backoff"
"tailscale.com/net/tsaddr" "tailscale.com/net/tsaddr"
@@ -489,6 +490,13 @@ func (uc *UpstreamConfig) newDOHTransport(addrs []string) *http.Transport {
ClientSessionCache: tls.NewLRUClientSessionCache(0), ClientSessionCache: tls.NewLRUClientSessionCache(0),
} }
// Prevent bad tcp connection hanging the requests for too long.
// See: https://github.com/golang/go/issues/36026
if t2, err := http2.ConfigureTransports(transport); err == nil {
t2.ReadIdleTimeout = 10 * time.Second
t2.PingTimeout = 5 * time.Second
}
dialerTimeoutMs := 2000 dialerTimeoutMs := 2000
if uc.Timeout > 0 && uc.Timeout < dialerTimeoutMs { if uc.Timeout > 0 && uc.Timeout < dialerTimeoutMs {
dialerTimeoutMs = uc.Timeout dialerTimeoutMs = uc.Timeout