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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.
- //go:build aix || darwin || dragonfly || freebsd || hurd || linux || netbsd || openbsd || solaris || windows
- package net
- import (
- "runtime"
- "syscall"
- )
- func joinIPv4Group(fd *netFD, ifi *Interface, ip IP) error {
- mreq := &syscall.IPMreq{Multiaddr: [4]byte{ip[0], ip[1], ip[2], ip[3]}}
- if err := setIPv4MreqToInterface(mreq, ifi); err != nil {
- return err
- }
- err := fd.pfd.SetsockoptIPMreq(syscall.IPPROTO_IP, syscall.IP_ADD_MEMBERSHIP, mreq)
- runtime.KeepAlive(fd)
- return wrapSyscallError("setsockopt", err)
- }
- func setIPv6MulticastInterface(fd *netFD, ifi *Interface) error {
- var v int
- if ifi != nil {
- v = ifi.Index
- }
- err := fd.pfd.SetsockoptInt(syscall.IPPROTO_IPV6, syscall.IPV6_MULTICAST_IF, v)
- runtime.KeepAlive(fd)
- return wrapSyscallError("setsockopt", err)
- }
- func setIPv6MulticastLoopback(fd *netFD, v bool) error {
- err := fd.pfd.SetsockoptInt(syscall.IPPROTO_IPV6, syscall.IPV6_MULTICAST_LOOP, boolint(v))
- runtime.KeepAlive(fd)
- return wrapSyscallError("setsockopt", err)
- }
- func joinIPv6Group(fd *netFD, ifi *Interface, ip IP) error {
- mreq := &syscall.IPv6Mreq{}
- copy(mreq.Multiaddr[:], ip)
- if ifi != nil {
- mreq.Interface = uint32(ifi.Index)
- }
- err := fd.pfd.SetsockoptIPv6Mreq(syscall.IPPROTO_IPV6, syscall.IPV6_JOIN_GROUP, mreq)
- runtime.KeepAlive(fd)
- return wrapSyscallError("setsockopt", err)
- }
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