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wgengine/netstack: clarify a comment

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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-08-27 11:10:56 -07:00
parent ae9b3f38d6
commit 83906abc5e
1 changed files with 8 additions and 6 deletions
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14
wgengine/netstack/netstack.go
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@ -509,12 +509,14 @@ func (ns *Impl) acceptTCP(r *tcp.ForwarderRequest) {
} }
r.Complete(false) r.Complete(false)
// Asynchronously start the TCP handshake. Note that the // The ForwarderRequest.CreateEndpoint above asynchronously
// gonet.TCPConn methods c.RemoteAddr() and c.LocalAddr() will // starts the TCP handshake. Note that the gonet.TCPConn
// return nil until the handshake actually completes. But we // methods c.RemoteAddr() and c.LocalAddr() will return nil
// have the remote address in reqDetails instead, so we don't // until the handshake actually completes. But we have the
// use RemoteAddr. The byte copies in both directions in // remote address in reqDetails instead, so we don't use
// forwardTCP will block until the TCP handshake is complete. // gonet.TCPConn.RemoteAddr. The byte copies in both
// directions to/from the gonet.TCPConn in forwardTCP will
// block until the TCP handshake is complete.
c := gonet.NewTCPConn(&wq, ep) c := gonet.NewTCPConn(&wq, ep)
if ns.ForwardTCPIn != nil { if ns.ForwardTCPIn != nil {