package udpmux

Import Path
	github.com/libp2p/go-libp2p/p2p/transport/webrtc/udpmux (on go.dev)

Dependency Relation
	imports 13 packages, and imported by one package


Involved Source Files

	
		The udpmux package contains the logic for multiplexing multiple WebRTC (ICE)
		connections over a single UDP socket.

	    muxed_connection.go


Package-Level Type Names (total 2)


	/* sort by:  |  */
	

		
			Addr *net.UDPAddr
			Ufrag string
		
			func (*UDPMux).Accept(ctx context.Context) (Candidate, error)


	
		UDPMux multiplexes multiple ICE connections over a single net.PacketConn,
		generally a UDP socket.
		
		The connections are indexed by (ufrag, IP address family) and by remote
		address from which the connection has received valid STUN/RTC packets.
		
		When a new packet is received on the underlying net.PacketConn, we
		first check the address map to see if there is a connection associated with the
		remote address:
		If found, we pass the packet to that connection.
		Otherwise, we check to see if the packet is a STUN packet.
		If it is, we read the ufrag from the STUN packet and use it to check if there
		is a connection associated with the (ufrag, IP address family) pair.
		If found we add the association to the address map.

		
			(*UDPMux) Accept(ctx context.Context) (Candidate, error)
			
				Close implements ice.UDPMux

			
				GetConn implements ice.UDPMux
				It creates a net.PacketConn for a given ufrag if an existing one cannot be found.
				We differentiate IPv4 and IPv6 addresses, since a remote is can be reachable at multiple different
				UDP addresses of the same IP address family (eg. server-reflexive addresses and peer-reflexive addresses).

			
				GetListenAddresses implements ice.UDPMux

			
				RemoveConnByUfrag removes the connection associated with the ufrag and all the
				addresses associated with that connection. This method is called by pion when
				a peerconnection is closed.

			(*UDPMux) Start()
		
			*UDPMux : github.com/pion/ice/v4.UDPMux
			*UDPMux : github.com/prometheus/common/expfmt.Closer
			*UDPMux : io.Closer
		
			func NewUDPMux(socket net.PacketConn) *UDPMux




Package-Level Functions (only one)




Package-Level Constants (only one)


	
		ReceiveBufSize is the size of the buffer used to receive packets from the PacketConn.
		It is fine for this number to be higher than the actual path MTU as this value is not
		used to decide the packet size on the write path.