sockopt.go (1724B)
1 // Copyright 2014 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 ipv4 6 7 import "golang.org/x/net/internal/socket" 8 9 // Sticky socket options 10 const ( 11 ssoTOS = iota // header field for unicast packet 12 ssoTTL // header field for unicast packet 13 ssoMulticastTTL // header field for multicast packet 14 ssoMulticastInterface // outbound interface for multicast packet 15 ssoMulticastLoopback // loopback for multicast packet 16 ssoReceiveTTL // header field on received packet 17 ssoReceiveDst // header field on received packet 18 ssoReceiveInterface // inbound interface on received packet 19 ssoPacketInfo // incbound or outbound packet path 20 ssoHeaderPrepend // ipv4 header prepend 21 ssoStripHeader // strip ipv4 header 22 ssoICMPFilter // icmp filter 23 ssoJoinGroup // any-source multicast 24 ssoLeaveGroup // any-source multicast 25 ssoJoinSourceGroup // source-specific multicast 26 ssoLeaveSourceGroup // source-specific multicast 27 ssoBlockSourceGroup // any-source or source-specific multicast 28 ssoUnblockSourceGroup // any-source or source-specific multicast 29 ssoAttachFilter // attach BPF for filtering inbound traffic 30 ) 31 32 // Sticky socket option value types 33 const ( 34 ssoTypeIPMreq = iota + 1 35 ssoTypeIPMreqn 36 ssoTypeGroupReq 37 ssoTypeGroupSourceReq 38 ) 39 40 // A sockOpt represents a binding for sticky socket option. 41 type sockOpt struct { 42 socket.Option 43 typ int // hint for option value type; optional 44 }