diff options
| -rw-r--r-- | tun/netstack/tun.go | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tun/netstack/tun.go b/tun/netstack/tun.go index 6bdea23..50da0d7 100644 --- a/tun/netstack/tun.go +++ b/tun/netstack/tun.go @@ -721,6 +721,7 @@ func partialDeadline(now, deadline time.Time, addrsRemaining int) (time.Time, er } func (tnet *Net) DialContext(ctx context.Context, network, address string) (net.Conn, error) { + fmt.Warningf("tun_net.DialContext: ", network, address) if ctx == nil { panic("nil context") } @@ -733,23 +734,28 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. acceptV6 = network[3] == '6' } if !acceptV4 && !acceptV6 { + fmt.Warningf("DialContext no v4 v6") return nil, &net.OpError{Op: "dial", Err: net.UnknownNetworkError(network)} } if network[:3] == "udp" { useUDP = true } else if network[:3] != "tcp" { + fmt.Warningf("DialContext no udp no tcp") return nil, &net.OpError{Op: "dial", Err: net.UnknownNetworkError(network)} } host, sport, err := net.SplitHostPort(address) if err != nil { + fmt.Warningf("DialContext failed split", address, err) return nil, &net.OpError{Op: "dial", Err: err} } port, err := strconv.Atoi(sport) if err != nil || port < 0 || port > 65535 { + fmt.Warningf("DialContext failed port", sport, err) return nil, &net.OpError{Op: "dial", Err: errNumericPort} } allAddr, err := tnet.LookupContextHost(ctx, host) if err != nil { + fmt.Warningf("LookupContextHost failed: ", host, err) return nil, &net.OpError{Op: "dial", Err: err} } var addrs []net.IP @@ -761,6 +767,7 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. } } if len(addrs) == 0 && len(allAddr) != 0 { + fmt.Warningf("DialContext failed no addr") return nil, &net.OpError{Op: "dial", Err: errNoSuitableAddress} } @@ -774,6 +781,7 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. } else if err == context.DeadlineExceeded { err = errTimeout } + fmt.Warningf("DialContext failed context done", err) return nil, &net.OpError{Op: "dial", Err: err} default: } @@ -801,6 +809,7 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. c, err = tnet.DialContextTCP(dialCtx, &net.TCPAddr{IP: addr, Port: port}) } if err == nil { + fmt.Warningf("DialContext success") return c, nil } if firstErr == nil { @@ -810,6 +819,7 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. if firstErr == nil { firstErr = &net.OpError{Op: "dial", Err: errMissingAddress} } + fmt.Warningf("DialContext failed", firstErr) return nil, firstErr } |