sockoptip4_bsdvar.mx raw

   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.
   4  
   5  //go:build aix || darwin || dragonfly || freebsd || netbsd || openbsd || solaris
   6  
   7  package net
   8  
   9  import (
  10  	"runtime"
  11  	"syscall"
  12  )
  13  
  14  func setIPv4MulticastInterface(fd *netFD, ifi *Interface) error {
  15  	ip, err := interfaceToIPv4Addr(ifi)
  16  	if err != nil {
  17  		return wrapSyscallError("setsockopt", err)
  18  	}
  19  	var a [4]byte
  20  	copy(a[:], ip.To4())
  21  	err = fd.pfd.SetsockoptInet4Addr(syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, a)
  22  	runtime.KeepAlive(fd)
  23  	return wrapSyscallError("setsockopt", err)
  24  }
  25  
  26  func setIPv4MulticastLoopback(fd *netFD, v bool) error {
  27  	err := fd.pfd.SetsockoptByte(syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, byte(boolint(v)))
  28  	runtime.KeepAlive(fd)
  29  	return wrapSyscallError("setsockopt", err)
  30  }
  31