Connectionless demux (cont) DatagramSocket serverSocket new DatagramSocket (6428); P2 P3 P1 SP:6428 SP:6428 DP:9157 DP:5775 SP:9157 SP:5775 client DP:6428 DP:6428 server Client IP:A IP:C IP:B SP provides "return address" Transport Layer 3-11 Transport Layer 3-11 Connectionless demux (cont) DatagramSocket serverSocket = new DatagramSocket(6428); Client IP:B P2 client IP: A P1P1 P3 server IP: C SP: 6428 DP: 9157 SP: 9157 DP: 6428 SP: 6428 DP: 5775 SP: 5775 DP: 6428 SP provides “return address