syncthing/vendor/golang.org/x/net/ipv6/sockopt.go

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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 ipv6
// Sticky socket options
const (
ssoTrafficClass = iota // header field for unicast packet, RFC 3542
ssoHopLimit // header field for unicast packet, RFC 3493
ssoMulticastInterface // outbound interface for multicast packet, RFC 3493
ssoMulticastHopLimit // header field for multicast packet, RFC 3493
ssoMulticastLoopback // loopback for multicast packet, RFC 3493
ssoReceiveTrafficClass // header field on received packet, RFC 3542
ssoReceiveHopLimit // header field on received packet, RFC 2292 or 3542
ssoReceivePacketInfo // incbound or outbound packet path, RFC 2292 or 3542
ssoReceivePathMTU // path mtu, RFC 3542
ssoPathMTU // path mtu, RFC 3542
ssoChecksum // packet checksum, RFC 2292 or 3542
ssoICMPFilter // icmp filter, RFC 2292 or 3542
ssoJoinGroup // any-source multicast, RFC 3493
ssoLeaveGroup // any-source multicast, RFC 3493
ssoJoinSourceGroup // source-specific multicast
ssoLeaveSourceGroup // source-specific multicast
ssoBlockSourceGroup // any-source or source-specific multicast
ssoUnblockSourceGroup // any-source or source-specific multicast
ssoMax
)
// Sticky socket option value types
const (
ssoTypeInt = iota + 1
ssoTypeInterface
ssoTypeICMPFilter
ssoTypeMTUInfo
ssoTypeIPMreq
ssoTypeGroupReq
ssoTypeGroupSourceReq
)
// A sockOpt represents a binding for sticky socket option.
type sockOpt struct {
level int // option level
name int // option name, must be equal or greater than 1
typ int // option value type, must be equal or greater than 1
}