sockoptip_bsdvar.go

Documentation: net

		 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  // +build aix darwin dragonfly freebsd netbsd openbsd solaris
		 7  
		 8  package net
		 9  
		10  import (
		11  	"runtime"
		12  	"syscall"
		13  )
		14  
		15  func setIPv4MulticastInterface(fd *netFD, ifi *Interface) error {
		16  	ip, err := interfaceToIPv4Addr(ifi)
		17  	if err != nil {
		18  		return wrapSyscallError("setsockopt", err)
		19  	}
		20  	var a [4]byte
		21  	copy(a[:], ip.To4())
		22  	err = fd.pfd.SetsockoptInet4Addr(syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, a)
		23  	runtime.KeepAlive(fd)
		24  	return wrapSyscallError("setsockopt", err)
		25  }
		26  
		27  func setIPv4MulticastLoopback(fd *netFD, v bool) error {
		28  	err := fd.pfd.SetsockoptByte(syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, byte(boolint(v)))
		29  	runtime.KeepAlive(fd)
		30  	return wrapSyscallError("setsockopt", err)
		31  }
		32
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