ipproto

Documentation

Overview

Package ipproto contains IP Protocol constants.

Index

• Constants
• type Proto
  • func (p Proto) MarshalJSON() ([]byte, error)
  • func (p Proto) MarshalText() ([]byte, error)
  • func (p Proto) String() string
  • func (p *Proto) UnmarshalJSON(b []byte) error
  • func (p *Proto) UnmarshalText(b []byte) error
• type Version
  • func (p Version) String() string

Constants

const (
	Version4 = 4
	Version6 = 6
)

Valid Version values.

Types

type Proto

type Proto uint8

Proto is an IP subprotocol as defined by the IANA protocol numbers list (https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml), or the special values Unknown or Fragment.

const (
	// Unknown represents an unknown or unsupported protocol; it's
	// deliberately the zero value. Strictly speaking the zero
	// value is IPv6 hop-by-hop extensions, but we don't support
	// those, so this is still technically correct.
	Unknown Proto = 0x00

	// Values from the IANA registry.
	ICMPv4 Proto = 0x01
	IGMP   Proto = 0x02
	ICMPv6 Proto = 0x3a
	TCP    Proto = 0x06
	UDP    Proto = 0x11
	DCCP   Proto = 0x21
	GRE    Proto = 0x2f
	SCTP   Proto = 0x84

	// TSMP is the Tailscale Message Protocol (our ICMP-ish
	// thing), an IP protocol used only between Tailscale nodes
	// (still encrypted by WireGuard) that communicates why things
	// failed, etc.
	//
	// Proto number 99 is reserved for "any private encryption
	// scheme". We never accept these from the host OS stack nor
	// send them to the host network stack. It's only used between
	// nodes.
	TSMP Proto = 99

	// Fragment represents any non-first IP fragment, for which we
	// don't have the sub-protocol header (and therefore can't
	// figure out what the sub-protocol is).
	//
	// 0xFF is reserved in the IANA registry, so we steal it for
	// internal use.
	Fragment Proto = 0xFF
)

func (Proto) MarshalJSON

func (p Proto) MarshalJSON() ([]byte, error)

MarshalJSON implements json.Marshaler.

func (Proto) MarshalText

func (p Proto) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler.

func (Proto) String

func (p Proto) String() string

Deprecated: use MarshalText instead.

func (*Proto) UnmarshalJSON

func (p *Proto) UnmarshalJSON(b []byte) error

UnmarshalJSON implements json.Unmarshaler. If the input is empty, p is set to 0. If an error occurs, p is unchanged. The input must be a JSON number or an accepted string name.

func (*Proto) UnmarshalText

func (p *Proto) UnmarshalText(b []byte) error

UnmarshalText implements encoding.TextUnmarshaler. If the input is empty, p is set to 0. If an error occurs, p is unchanged.

type Version

type Version uint8

Version describes the IP address version.

func (Version) String

func (p Version) String() string