1 // Copyright 2011 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
14 func setIPv4MulticastInterface(fd *netFD, ifi *Interface) error {
15 ip, err := interfaceToIPv4Addr(ifi)
17 return os.NewSyscallError("setsockopt", err)
21 err = fd.pfd.Setsockopt(syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, (*byte)(unsafe.Pointer(&a[0])), 4)
23 return wrapSyscallError("setsockopt", err)
26 func setIPv4MulticastLoopback(fd *netFD, v bool) error {
27 err := fd.pfd.SetsockoptInt(syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, boolint(v))
29 return wrapSyscallError("setsockopt", err)