net: delete duplicate listenerSockaddr

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7299067

src/pkg/net/sock_bsd.go

@@ -4,8 +4,6 @@
 
 // +build darwin freebsd netbsd openbsd
 
-// Sockets for BSD variants
-
 package net
 
 import (
@@ -31,32 +29,3 @@ func maxListenerBacklog() int {
 	}
 	return int(n)
 }
-
-func listenerSockaddr(s, f int, la syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (syscall.Sockaddr, error) {
-	a := toAddr(la)
-	if a == nil {
-		return la, nil
-	}
-	switch v := a.(type) {
-	case *TCPAddr, *UnixAddr:
-		err := setDefaultListenerSockopts(s)
-		if err != nil {
-			return nil, err
-		}
-	case *UDPAddr:
-		if v.IP.IsMulticast() {
-			err := setDefaultMulticastSockopts(s)
-			if err != nil {
-				return nil, err
-			}
-			switch f {
-			case syscall.AF_INET:
-				v.IP = IPv4zero
-			case syscall.AF_INET6:
-				v.IP = IPv6unspecified
-			}
-			return v.sockaddr(f)
-		}
-	}
-	return la, nil
-}

src/pkg/net/sock_linux.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Sockets for Linux
-
 package net
 
 import "syscall"
@@ -25,32 +23,3 @@ func maxListenerBacklog() int {
 	}
 	return n
 }
-
-func listenerSockaddr(s, f int, la syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (syscall.Sockaddr, error) {
-	a := toAddr(la)
-	if a == nil {
-		return la, nil
-	}
-	switch v := a.(type) {
-	case *TCPAddr, *UnixAddr:
-		err := setDefaultListenerSockopts(s)
-		if err != nil {
-			return nil, err
-		}
-	case *UDPAddr:
-		if v.IP.IsMulticast() {
-			err := setDefaultMulticastSockopts(s)
-			if err != nil {
-				return nil, err
-			}
-			switch f {
-			case syscall.AF_INET:
-				v.IP = IPv4zero
-			case syscall.AF_INET6:
-				v.IP = IPv6unspecified
-			}
-			return v.sockaddr(f)
-		}
-	}
-	return la, nil
-}

src/pkg/net/sock_posix.go

@@ -4,8 +4,6 @@
 
 // +build darwin freebsd linux netbsd openbsd windows
 
-// Sockets
-
 package net
 
 import (
@@ -15,7 +13,7 @@ import (
 
 var listenerBacklog = maxListenerBacklog()
 
-// Generic socket creation.
+// 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 {

src/pkg/net/sock_unix.go

+// 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
+
+package net
+
+import "syscall"
+
+func listenerSockaddr(s, f int, la syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (syscall.Sockaddr, error) {
+	a := toAddr(la)
+	if a == nil {
+		return la, nil
+	}
+	switch a := a.(type) {
+	case *TCPAddr, *UnixAddr:
+		if err := setDefaultListenerSockopts(s); err != nil {
+			return nil, err
+		}
+	case *UDPAddr:
+		if a.IP.IsMulticast() {
+			if err := setDefaultMulticastSockopts(s); err != nil {
+				return nil, err
+			}
+			switch f {
+			case syscall.AF_INET:
+				a.IP = IPv4zero
+			case syscall.AF_INET6:
+				a.IP = IPv6unspecified
+			}
+			return a.sockaddr(f)
+		}
+	}
+	return la, nil
+}

src/pkg/net/sock_windows.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Sockets for Windows
-
 package net
 
 import "syscall"
@@ -18,25 +16,23 @@ func listenerSockaddr(s syscall.Handle, f int, la syscall.Sockaddr, toAddr func(
 	if a == nil {
 		return la, nil
 	}
-	switch v := a.(type) {
+	switch a := a.(type) {
 	case *TCPAddr, *UnixAddr:
-		err := setDefaultListenerSockopts(s)
-		if err != nil {
+		if err := setDefaultListenerSockopts(s); err != nil {
 			return nil, err
 		}
 	case *UDPAddr:
-		if v.IP.IsMulticast() {
-			err := setDefaultMulticastSockopts(s)
-			if err != nil {
+		if a.IP.IsMulticast() {
+			if err := setDefaultMulticastSockopts(s); err != nil {
 				return nil, err
 			}
 			switch f {
 			case syscall.AF_INET:
-				v.IP = IPv4zero
+				a.IP = IPv4zero
 			case syscall.AF_INET6:
-				v.IP = IPv6unspecified
+				a.IP = IPv6unspecified
 			}
-			return v.sockaddr(f)
+			return a.sockaddr(f)
 		}
 	}
 	return la, nil