raw

Documentation

Overview

Package raw provides the implementation of raw sockets (see raw(7)). Raw sockets allow applications to:

• manually write and inspect transport layer headers and payloads
• receive all traffic of a given transport protocol (e.g. ICMP or UDP)
• optionally write and inspect network layer and link layer headers for packets

Raw sockets don't have any notion of ports, and incoming packets are demultiplexed solely by protocol number. Thus, a raw UDP endpoint will receive every UDP packet received by netstack. bind(2) and connect(2) can be used to filter incoming packets by source and destination.

Index

• func NewEndpoint(stack *stack.Stack, netProto tcpip.NetworkProtocolNumber, ...) (tcpip.Endpoint, *tcpip.Error)
• type EndpointFactory
  • func (EndpointFactory) NewUnassociatedRawEndpoint(stack *stack.Stack, netProto tcpip.NetworkProtocolNumber, ...) (tcpip.Endpoint, *tcpip.Error)

Functions

func NewEndpoint

func NewEndpoint(stack *stack.Stack, netProto tcpip.NetworkProtocolNumber, transProto tcpip.TransportProtocolNumber, waiterQueue *waiter.Queue) (tcpip.Endpoint, *tcpip.Error)

NewEndpoint returns a raw endpoint for the given protocols. TODO(b/129292371): IP_HDRINCL and AF_PACKET.

Types

type EndpointFactory

type EndpointFactory struct{}

EndpointFactory implements stack.UnassociatedEndpointFactory.

func (EndpointFactory) NewUnassociatedRawEndpoint

func (EndpointFactory) NewUnassociatedRawEndpoint(stack *stack.Stack, netProto tcpip.NetworkProtocolNumber, transProto tcpip.TransportProtocolNumber, waiterQueue *waiter.Queue) (tcpip.Endpoint, *tcpip.Error)

NewUnassociatedRawEndpoint implements stack.UnassociatedEndpointFactory.