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wgengine/netstack: close forwarded TCP connections when incoming TCP dies

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Updates #4522

Change-Id: I31a430da422b1e5fab834a2a670cddf448889ee6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2022-04-26 09:00:02 -07:00
parent c6c752cf64
commit 5d4a361b4c
1 changed files with 8 additions and 4 deletions
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12
wgengine/netstack/netstack.go
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@ -734,11 +734,15 @@ func (ns *Impl) forwardTCP(client *gonet.TCPConn, clientRemoteIP netaddr.IP, wq
_, err := io.Copy(client, server)
connClosed <- err
}()
err = <-connClosed
if err != nil {
ns.logf("proxy connection closed with error: %v", err)
select {
case err := <-connClosed:
if err != nil {
ns.logf("proxy connection closed with error: %v", err)
}
ns.logf("[v2] netstack: forwarder connection to %s closed", dialAddrStr)
case <-ctx.Done():
ns.logf("[v2] netstack: context done, closing TCP forward conn to %s", dialAddrStr)
}
ns.logf("[v2] netstack: forwarder connection to %s closed", dialAddrStr)
}
func (ns *Impl) acceptUDP(r *udp.ForwarderRequest) {