github.com/Andyfoo/golang/x/net@v0.0.0-20190901054642-57c1bf301704/ipv6/sys_windows.go (about)

     1  // Copyright 2013 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  package ipv6
     6  
     7  import (
     8  	"net"
     9  	"syscall"
    10  
    11  	"github.com/Andyfoo/golang/x/net/internal/iana"
    12  	"github.com/Andyfoo/golang/x/net/internal/socket"
    13  )
    14  
    15  const (
    16  	// See ws2tcpip.h.
    17  	sysIPV6_UNICAST_HOPS   = 0x4
    18  	sysIPV6_MULTICAST_IF   = 0x9
    19  	sysIPV6_MULTICAST_HOPS = 0xa
    20  	sysIPV6_MULTICAST_LOOP = 0xb
    21  	sysIPV6_JOIN_GROUP     = 0xc
    22  	sysIPV6_LEAVE_GROUP    = 0xd
    23  	sysIPV6_PKTINFO        = 0x13
    24  
    25  	sizeofSockaddrInet6 = 0x1c
    26  
    27  	sizeofIPv6Mreq     = 0x14
    28  	sizeofIPv6Mtuinfo  = 0x20
    29  	sizeofICMPv6Filter = 0
    30  )
    31  
    32  type sockaddrInet6 struct {
    33  	Family   uint16
    34  	Port     uint16
    35  	Flowinfo uint32
    36  	Addr     [16]byte /* in6_addr */
    37  	Scope_id uint32
    38  }
    39  
    40  type ipv6Mreq struct {
    41  	Multiaddr [16]byte /* in6_addr */
    42  	Interface uint32
    43  }
    44  
    45  type ipv6Mtuinfo struct {
    46  	Addr sockaddrInet6
    47  	Mtu  uint32
    48  }
    49  
    50  type icmpv6Filter struct {
    51  	// TODO(mikio): implement this
    52  }
    53  
    54  var (
    55  	ctlOpts = [ctlMax]ctlOpt{}
    56  
    57  	sockOpts = map[int]*sockOpt{
    58  		ssoHopLimit:           {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
    59  		ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
    60  		ssoMulticastHopLimit:  {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
    61  		ssoMulticastLoopback:  {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
    62  		ssoJoinGroup:          {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_JOIN_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
    63  		ssoLeaveGroup:         {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_LEAVE_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
    64  	}
    65  )
    66  
    67  func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
    68  	sa.Family = syscall.AF_INET6
    69  	copy(sa.Addr[:], ip)
    70  	sa.Scope_id = uint32(i)
    71  }
    72  
    73  func (mreq *ipv6Mreq) setIfindex(i int) {
    74  	mreq.Interface = uint32(i)
    75  }