ir sender receiver

Packet1Receiver R1 (assuming its IP address is 192.168.220.128)----The first step is to join the multicast group (234.2.2.2) through setsockopt; the second step is to start the process monitoring 192.168.220.128:23456Receiver R2 (assuming its IP address is 192.168.220.129)----The first step is to join the multicast group (234.2.2.2) through setsockopt; the second step is to start the process monitoring 192.168.220.129:23456The final effect----a UDP packet sent to 234.2.2.2:23456 by the

event ");Scanf ("% d", D );Printf ("************************************* * *******************/N ");}If (D = 2 | D = 3 | D = 4)Retrans1 (); // re-transmits the first packetIf (D = 1)Sendata0 (); // return to the data packet No. 0 to be sent }Void retrans1 (){Printf ("packets whose serial number is to be ressent/N ");Sendata1 (); // resend the data packet No. 1} Aggreger: # Include Void start ();Void recv0 ();Void recall0 ();Void sendack1 ();Void recall1 ();Void sendack0 ();Void recv1 (); Void

();}}}} Receive (receiver ): Import Java. io. ioexception; import java.net. datagrampacket; import java.net. datagramsocket; import java.net. socketexception; public class receiverdemo1 {Private Static final int Port = 8080; public static void main (string [] ARGs) {receivehandler ();} Private Static void receivehandler () {datagramsocket receivesocket = NULL; try {// listen to receivesocket = new datagramsocket (port) on port 8080; // wh