|
|
|
@ -419,7 +419,7 @@ func (ns *Impl) forwardUDP(client *gonet.UDPConn, wq *waiter.Queue, clientLocalA
|
|
|
|
|
}
|
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
|
|
|
timer := time.AfterFunc(2*time.Minute, func() {
|
|
|
|
|
ns.logf("netstack: forwarder UDP connection on port %v closed", port)
|
|
|
|
|
ns.logf("netstack: UDP session between %s and %s timed out", clientRemoteAddr, backendRemoteAddr)
|
|
|
|
|
cancel()
|
|
|
|
|
client.Close()
|
|
|
|
|
backendConn.Close()
|
|
|
|
@ -427,16 +427,17 @@ func (ns *Impl) forwardUDP(client *gonet.UDPConn, wq *waiter.Queue, clientLocalA
|
|
|
|
|
extend := func() {
|
|
|
|
|
timer.Reset(2 * time.Minute)
|
|
|
|
|
}
|
|
|
|
|
startPacketCopy(ctx, client, &net.UDPAddr{
|
|
|
|
|
startPacketCopy(ctx, cancel, client, &net.UDPAddr{
|
|
|
|
|
IP: net.ParseIP(clientRemoteAddr.Addr.String()),
|
|
|
|
|
Port: int(clientRemoteAddr.Port),
|
|
|
|
|
}, backendConn, ns.logf, extend)
|
|
|
|
|
startPacketCopy(ctx, backendConn, backendRemoteAddr, client, ns.logf, extend)
|
|
|
|
|
startPacketCopy(ctx, cancel, backendConn, backendRemoteAddr, client, ns.logf, extend)
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
func startPacketCopy(ctx context.Context, dst net.PacketConn, dstAddr net.Addr, src net.PacketConn, logf logger.Logf, extend func()) {
|
|
|
|
|
func startPacketCopy(ctx context.Context, cancel context.CancelFunc, dst net.PacketConn, dstAddr net.Addr, src net.PacketConn, logf logger.Logf, extend func()) {
|
|
|
|
|
go func() {
|
|
|
|
|
defer cancel() // tear down the other direction's copy
|
|
|
|
|
pkt := make([]byte, mtu)
|
|
|
|
|
for {
|
|
|
|
|
select {
|
|
|
|
@ -457,7 +458,9 @@ func startPacketCopy(ctx context.Context, dst net.PacketConn, dstAddr net.Addr,
|
|
|
|
|
}
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
logf("[v2] wrote UDP packet %s -> %s", srcAddr, dstAddr)
|
|
|
|
|
if debugNetstack {
|
|
|
|
|
logf("[v2] wrote UDP packet %s -> %s", srcAddr, dstAddr)
|
|
|
|
|
}
|
|
|
|
|
extend()
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|