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cmd/natc: send TCP keepalives to upstreams

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Idle connections may silently close, detect those closures with TCP
keeliave.

Updates tailscale/corp#25169

Signed-off-by: James Tucker <james@tailscale.com>
This commit is contained in:
James Tucker 2025-01-21 13:17:21 -08:00
parent 51adaec35a
commit 900b64403d
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1 changed files with 2 additions and 1 deletions
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cmd/natc/natc.go
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@ -476,6 +476,7 @@ func proxyTCPConn(c net.Conn, dest string) {
} }
p.AddRoute(addrPortStr, &tcpproxy.DialProxy{ p.AddRoute(addrPortStr, &tcpproxy.DialProxy{
Addr: fmt.Sprintf("%s:%s", dest, port), Addr: fmt.Sprintf("%s:%s", dest, port),
KeepAlivePeriod: time.Second,
}) })
p.Start() p.Start()
} }