Imported Upstream version 1.4upstream/1.4

1 files changed, 54 insertions, 0 deletions

diff --git a/src/net/tcpsock.go b/src/net/tcpsock.go
new file mode 100644
index 000000000..f3dfbd23d
--- /dev/null
+++ b/src/net/tcpsock.go
@@ -0,0 +1,54 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package net
+
+// TCPAddr represents the address of a TCP end point.
+type TCPAddr struct {
+	IP   IP
+	Port int
+	Zone string // IPv6 scoped addressing zone
+}
+
+// Network returns the address's network name, "tcp".
+func (a *TCPAddr) Network() string { return "tcp" }
+
+func (a *TCPAddr) String() string {
+	if a == nil {
+		return "<nil>"
+	}
+	ip := ipEmptyString(a.IP)
+	if a.Zone != "" {
+		return JoinHostPort(ip+"%"+a.Zone, itoa(a.Port))
+	}
+	return JoinHostPort(ip, itoa(a.Port))
+}
+
+func (a *TCPAddr) toAddr() Addr {
+	if a == nil {
+		return nil
+	}
+	return a
+}
+
+// ResolveTCPAddr parses addr as a TCP address of the form "host:port"
+// or "[ipv6-host%zone]:port" and resolves a pair of domain name and
+// port name on the network net, which must be "tcp", "tcp4" or
+// "tcp6".  A literal address or host name for IPv6 must be enclosed
+// in square brackets, as in "[::1]:80", "[ipv6-host]:http" or
+// "[ipv6-host%zone]:80".
+func ResolveTCPAddr(net, addr string) (*TCPAddr, error) {
+	switch net {
+	case "tcp", "tcp4", "tcp6":
+	case "": // a hint wildcard for Go 1.0 undocumented behavior
+		net = "tcp"
+	default:
+		return nil, UnknownNetworkError(net)
+	}
+	a, err := resolveInternetAddr(net, addr, noDeadline)
+	if err != nil {
+		return nil, err
+	}
+	return a.toAddr().(*TCPAddr), nil
+}