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67 lines
2.1 KiB
67 lines
2.1 KiB
// Copyright 2014 The Go Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file. |
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package ipv4 |
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import ( |
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"golang.org/x/net/internal/iana" |
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"golang.org/x/net/internal/socket" |
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) |
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const ( |
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// See ws2tcpip.h. |
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sysIP_OPTIONS = 0x1 |
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sysIP_HDRINCL = 0x2 |
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sysIP_TOS = 0x3 |
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sysIP_TTL = 0x4 |
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sysIP_MULTICAST_IF = 0x9 |
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sysIP_MULTICAST_TTL = 0xa |
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sysIP_MULTICAST_LOOP = 0xb |
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sysIP_ADD_MEMBERSHIP = 0xc |
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sysIP_DROP_MEMBERSHIP = 0xd |
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sysIP_DONTFRAGMENT = 0xe |
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sysIP_ADD_SOURCE_MEMBERSHIP = 0xf |
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sysIP_DROP_SOURCE_MEMBERSHIP = 0x10 |
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sysIP_PKTINFO = 0x13 |
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sizeofInetPktinfo = 0x8 |
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sizeofIPMreq = 0x8 |
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sizeofIPMreqSource = 0xc |
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) |
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type inetPktinfo struct { |
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Addr [4]byte |
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Ifindex int32 |
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} |
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type ipMreq struct { |
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Multiaddr [4]byte |
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Interface [4]byte |
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} |
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type ipMreqSource struct { |
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Multiaddr [4]byte |
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Sourceaddr [4]byte |
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Interface [4]byte |
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} |
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// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms738586(v=vs.85).aspx |
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var ( |
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ctlOpts = [ctlMax]ctlOpt{} |
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sockOpts = map[int]*sockOpt{ |
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ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}}, |
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ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}}, |
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ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 4}}, |
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ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: 4}}, |
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ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 4}}, |
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ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}}, |
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ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq}, |
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ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq}, |
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} |
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) |
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func (pi *inetPktinfo) setIfindex(i int) { |
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pi.Ifindex = int32(i) |
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}
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