Imported Upstream version 1.1~hg20130304upstream/1.1_hg20130304

1 files changed, 67 insertions, 0 deletions

diff --git a/src/pkg/net/sock_posix.go b/src/pkg/net/sock_posix.go
new file mode 100644
index 000000000..b50a892b1
--- /dev/null
+++ b/src/pkg/net/sock_posix.go
@@ -0,0 +1,67 @@
+// 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.
+
+// +build darwin freebsd linux netbsd openbsd windows
+
+package net
+
+import (
+	"syscall"
+	"time"
+)
+
+var listenerBacklog = maxListenerBacklog()
+
+// Generic POSIX socket creation.
+func socket(net string, f, t, p int, ipv6only bool, ulsa, ursa syscall.Sockaddr, deadline time.Time, toAddr func(syscall.Sockaddr) Addr) (fd *netFD, err error) {
+	s, err := sysSocket(f, t, p)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = setDefaultSockopts(s, f, t, ipv6only); err != nil {
+		closesocket(s)
+		return nil, err
+	}
+
+	if ulsa != nil {
+		// We provide a socket that listens to a wildcard
+		// address with reusable UDP port when the given ulsa
+		// is an appropriate UDP multicast address prefix.
+		// This makes it possible for a single UDP listener
+		// to join multiple different group addresses, for
+		// multiple UDP listeners that listen on the same UDP
+		// port to join the same group address.
+		if ulsa, err = listenerSockaddr(s, f, ulsa, toAddr); err != nil {
+			closesocket(s)
+			return nil, err
+		}
+		if err = syscall.Bind(s, ulsa); err != nil {
+			closesocket(s)
+			return nil, err
+		}
+	}
+
+	if fd, err = newFD(s, f, t, net); err != nil {
+		closesocket(s)
+		return nil, err
+	}
+
+	if ursa != nil {
+		fd.wdeadline.setTime(deadline)
+		if err = fd.connect(ursa); err != nil {
+			closesocket(s)
+			return nil, err
+		}
+		fd.isConnected = true
+		fd.wdeadline.set(0)
+	}
+
+	lsa, _ := syscall.Getsockname(s)
+	laddr := toAddr(lsa)
+	rsa, _ := syscall.Getpeername(s)
+	raddr := toAddr(rsa)
+	fd.setAddr(laddr, raddr)
+	return fd, nil
+}