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// Copyright 2011 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 dragonfly freebsd netbsd openbsd
package net
import (
"os"
"syscall"
)
func setIPv4MulticastInterface(fd *netFD, ifi *Interface) error {
ip, err := interfaceToIPv4Addr(ifi)
if err != nil {
return os.NewSyscallError("setsockopt", err)
}
var a [4]byte
copy(a[:], ip.To4())
if err := fd.incref(); err != nil {
return err
}
defer fd.decref()
return os.NewSyscallError("setsockopt", syscall.SetsockoptInet4Addr(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, a))
}
func setIPv4MulticastLoopback(fd *netFD, v bool) error {
if err := fd.incref(); err != nil {
return err
}
defer fd.decref()
return os.NewSyscallError("setsockopt", syscall.SetsockoptByte(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, byte(boolint(v))))
}
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