bump(code.google.com/p/go.net): ca4c826193c2

third_party/code.google.com/p/go.net/ipv4/sockopt_bsd.go

@@ -0,0 +1,95 @@
+// Copyright 2012 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 netbsd openbsd
+
+package ipv4
+
+import (
+	"net"
+	"os"
+	"syscall"
+)
+
+func ipv4MulticastTTL(fd int) (int, error) {
+	v, err := syscall.GetsockoptByte(fd, ianaProtocolIP, syscall.IP_MULTICAST_TTL)
+	if err != nil {
+		return 0, os.NewSyscallError("getsockopt", err)
+	}
+	return int(v), nil
+}
+
+func setIPv4MulticastTTL(fd int, v int) error {
+	return os.NewSyscallError("setsockopt", syscall.SetsockoptByte(fd, ianaProtocolIP, syscall.IP_MULTICAST_TTL, byte(v)))
+}
+
+func ipv4ReceiveDestinationAddress(fd int) (bool, error) {
+	v, err := syscall.GetsockoptInt(fd, ianaProtocolIP, syscall.IP_RECVDSTADDR)
+	if err != nil {
+		return false, os.NewSyscallError("getsockopt", err)
+	}
+	return v == 1, nil
+}
+
+func setIPv4ReceiveDestinationAddress(fd int, v bool) error {
+	return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIP, syscall.IP_RECVDSTADDR, boolint(v)))
+}
+
+func ipv4ReceiveInterface(fd int) (bool, error) {
+	v, err := syscall.GetsockoptInt(fd, ianaProtocolIP, syscall.IP_RECVIF)
+	if err != nil {
+		return false, os.NewSyscallError("getsockopt", err)
+	}
+	return v == 1, nil
+}
+
+func setIPv4ReceiveInterface(fd int, v bool) error {
+	return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIP, syscall.IP_RECVIF, boolint(v)))
+}
+
+func ipv4MulticastInterface(fd int) (*net.Interface, error) {
+	v, err := syscall.GetsockoptInet4Addr(fd, ianaProtocolIP, syscall.IP_MULTICAST_IF)
+	if err != nil {
+		return nil, os.NewSyscallError("getsockopt", err)
+	}
+	return netIP4ToInterface(net.IPv4(v[0], v[1], v[2], v[3]))
+}
+
+func setIPv4MulticastInterface(fd int, ifi *net.Interface) error {
+	ip, err := netInterfaceToIP4(ifi)
+	if err != nil {
+		return os.NewSyscallError("setsockopt", err)
+	}
+	var v [4]byte
+	copy(v[:], ip.To4())
+	return os.NewSyscallError("setsockopt", syscall.SetsockoptInet4Addr(fd, ianaProtocolIP, syscall.IP_MULTICAST_IF, v))
+}
+
+func ipv4MulticastLoopback(fd int) (bool, error) {
+	v, err := syscall.GetsockoptByte(fd, ianaProtocolIP, syscall.IP_MULTICAST_LOOP)
+	if err != nil {
+		return false, os.NewSyscallError("getsockopt", err)
+	}
+	return v == 1, nil
+}
+
+func setIPv4MulticastLoopback(fd int, v bool) error {
+	return os.NewSyscallError("setsockopt", syscall.SetsockoptByte(fd, ianaProtocolIP, syscall.IP_MULTICAST_LOOP, byte(boolint(v))))
+}
+
+func joinIPv4Group(fd int, ifi *net.Interface, grp net.IP) error {
+	mreq := syscall.IPMreq{Multiaddr: [4]byte{grp[0], grp[1], grp[2], grp[3]}}
+	if err := setSyscallIPMreq(&mreq, ifi); err != nil {
+		return err
+	}
+	return os.NewSyscallError("setsockopt", syscall.SetsockoptIPMreq(fd, ianaProtocolIP, syscall.IP_ADD_MEMBERSHIP, &mreq))
+}
+
+func leaveIPv4Group(fd int, ifi *net.Interface, grp net.IP) error {
+	mreq := syscall.IPMreq{Multiaddr: [4]byte{grp[0], grp[1], grp[2], grp[3]}}
+	if err := setSyscallIPMreq(&mreq, ifi); err != nil {
+		return err
+	}
+	return os.NewSyscallError("setsockopt", syscall.SetsockoptIPMreq(fd, ianaProtocolIP, syscall.IP_DROP_MEMBERSHIP, &mreq))
+}