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Increase the UDP timeout #110

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Increase the UDP timeout #110

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5 changes: 4 additions & 1 deletion outline/tunnel.go
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Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,10 @@ func (t *outlinetunnel) UpdateUDPSupport() bool {
func (t *outlinetunnel) registerConnectionHandlers() {
var udpHandler core.UDPConnHandler
if t.isUDPEnabled {
udpHandler = oss.NewUDPHandler(t.client, 30*time.Second)
// Tun2socks will supposedly call udpHandler.Close() when the app socket is no longer needed.
// However, we set a timeout to be safe. A UDP NAT timeout of at least 5 minutes is recommended
// in RFC 4787 Section 4.3.
udpHandler = oss.NewUDPHandler(t.client, 5*time.Minute)
} else {
udpHandler = dnsfallback.NewUDPHandler()
}
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