udp

Documentation

Index

• Constants
• type Datagram
  • func DatagramFromData(ipHdr ip.Header, data *buffer.Data) Datagram
  • func NewDatagram(ipPayloadLen int, src, dst net.IP) Datagram
• type DatagramHandler
  • func NewDnsInterceptor(toTun ip.Writer, id tunnel.ConnID, remove func(), dnsAddr *net.UDPAddr) (DatagramHandler, error)
  • func NewHandler(stream tunnel.Stream, toTun ip.Writer, id tunnel.ConnID, remove func()) DatagramHandler
• type Header
  • func (u Header) Checksum() uint16
  • func (u Header) DestinationPort() uint16
  • func (u Header) Packet() []byte
  • func (u Header) Payload() []byte
  • func (u Header) PayloadLen() uint16
  • func (u Header) SetChecksum(ipHdr ip.Header)
  • func (u Header) SetDestinationPort(port uint16)
  • func (u Header) SetPayloadLen(l uint16)
  • func (u Header) SetSourcePort(port uint16)
  • func (u Header) SourcePort() uint16
  • func (u Header) String() string
  • func (u Header) TotalLen() uint16

Constants

const HeaderLen = 8

Types

type Datagram

type Datagram interface {
	ip.Packet
	Header() Header
}

func DatagramFromData

func DatagramFromData(ipHdr ip.Header, data *buffer.Data) Datagram

func NewDatagram

func NewDatagram(ipPayloadLen int, src, dst net.IP) Datagram

type DatagramHandler

type DatagramHandler interface {
	tunnel.Handler
	HandleDatagram(ctx context.Context, dg Datagram)
}

func NewDnsInterceptor

func NewDnsInterceptor(toTun ip.Writer, id tunnel.ConnID, remove func(), dnsAddr *net.UDPAddr) (DatagramHandler, error)

NewDnsInterceptor returns a handler that exchanges messages directly with the given dnsConn instead of passing them on to the traffic-manager

func NewHandler

func NewHandler(stream tunnel.Stream, toTun ip.Writer, id tunnel.ConnID, remove func()) DatagramHandler

type Header

type Header []byte

The UDP datagram and its payload

func (Header) Checksum

func (u Header) Checksum() uint16

func (Header) DestinationPort

func (u Header) DestinationPort() uint16

func (Header) Packet

func (u Header) Packet() []byte

func (Header) Payload

func (u Header) Payload() []byte

func (Header) PayloadLen

func (u Header) PayloadLen() uint16

func (Header) SetChecksum

func (u Header) SetChecksum(ipHdr ip.Header)

func (Header) SetDestinationPort

func (u Header) SetDestinationPort(port uint16)

func (Header) SetPayloadLen

func (u Header) SetPayloadLen(l uint16)

func (Header) SetSourcePort

func (u Header) SetSourcePort(port uint16)

func (Header) SourcePort

func (u Header) SourcePort() uint16

func (Header) String

func (u Header) String() string

func (Header) TotalLen

func (u Header) TotalLen() uint16