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Source file src/net/sockoptip_bsd.go

Documentation: net

  // 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 (
  	"runtime"
  	"syscall"
  )
  
  func setIPv4MulticastInterface(fd *netFD, ifi *Interface) error {
  	ip, err := interfaceToIPv4Addr(ifi)
  	if err != nil {
  		return wrapSyscallError("setsockopt", err)
  	}
  	var a [4]byte
  	copy(a[:], ip.To4())
  	err = fd.pfd.SetsockoptInet4Addr(syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, a)
  	runtime.KeepAlive(fd)
  	return wrapSyscallError("setsockopt", err)
  }
  
  func setIPv4MulticastLoopback(fd *netFD, v bool) error {
  	err := fd.pfd.SetsockoptByte(syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, byte(boolint(v)))
  	runtime.KeepAlive(fd)
  	return wrapSyscallError("setsockopt", err)
  }
  

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