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// Copyright 2014 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.
package ipv4
import (
"golang.org/x/net/internal/iana"
"golang.org/x/net/internal/socket"
"golang.org/x/sys/windows"
)
const (
sizeofIPMreq = 0x8
sizeofIPMreqSource = 0xc
)
type ipMreq struct {
Multiaddr [4]byte
Interface [4]byte
}
type ipMreqSource struct {
Multiaddr [4]byte
Sourceaddr [4]byte
Interface [4]byte
}
// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms738586(v=vs.85).aspx
var (
ctlOpts = [ctlMax]ctlOpt{}
sockOpts = map[int]*sockOpt{
ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: windows.IP_TOS, Len: 4}},
ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: windows.IP_TTL, Len: 4}},
ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: windows.IP_MULTICAST_TTL, Len: 4}},
ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: windows.IP_MULTICAST_IF, Len: 4}},
ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: windows.IP_MULTICAST_LOOP, Len: 4}},
ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: windows.IP_HDRINCL, Len: 4}},
ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: windows.IP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: windows.IP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
}
)
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