diff options
| -rw-r--r-- | tun/netstack/tun.go | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tun/netstack/tun.go b/tun/netstack/tun.go index 6efa45f..7a3f4f6 100644 --- a/tun/netstack/tun.go +++ b/tun/netstack/tun.go @@ -589,6 +589,7 @@ func (tnet *Net) tryOneName(ctx context.Context, name string, qtype dnsmessage.T func (tnet *Net) LookupContextHost(ctx context.Context, host string) ([]string, error) { if host == "" || (!tnet.hasV6 && !tnet.hasV4) { + fmt.Printf("LookupContextHost: ", host, tnet.hasV4, tnet.hasV6) return nil, &net.DNSError{Err: errNoSuchHost.Error(), Name: host, IsNotFound: true} } zlen := len(host) @@ -602,6 +603,7 @@ func (tnet *Net) LookupContextHost(ctx context.Context, host string) ([]string, } if !isDomainName(host) { + fmt.Printf("LookupContextHost !isDomainName", host[:zlen]) return nil, &net.DNSError{Err: errNoSuchHost.Error(), Name: host, IsNotFound: true} } type result struct { @@ -730,6 +732,7 @@ 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.Printf("tun_net.DialContext: ", network, address) if ctx == nil { panic("nil context") } @@ -742,23 +745,28 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. acceptV6 = network[3] == '6' } if !acceptV4 && !acceptV6 { + fmt.Printf("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.Printf("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.Printf("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.Printf("DialContext failed port", sport, err) return nil, &net.OpError{Op: "dial", Err: errNumericPort} } allAddr, err := tnet.LookupContextHost(ctx, host) if err != nil { + fmt.Printf("LookupContextHost failed: ", host, err) return nil, &net.OpError{Op: "dial", Err: err} } var addrs []net.IP @@ -770,6 +778,7 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. } } if len(addrs) == 0 && len(allAddr) != 0 { + fmt.Printf("DialContext failed no addr") return nil, &net.OpError{Op: "dial", Err: errNoSuitableAddress} } @@ -783,6 +792,7 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. } else if err == context.DeadlineExceeded { err = errTimeout } + fmt.Printf("DialContext failed context done", err) return nil, &net.OpError{Op: "dial", Err: err} default: } @@ -810,6 +820,7 @@ 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.Printf("DialContext success") return c, nil } if firstErr == nil { @@ -819,6 +830,7 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net. if firstErr == nil { firstErr = &net.OpError{Op: "dial", Err: errMissingAddress} } + fmt.Printf("DialContext failed", firstErr) return nil, firstErr } |