tmk_core/tool/mbed/mbed-sdk/libraries/tests/net/helloworld/multicast_receive/main.cpp

   1 #include "mbed.h"
   2 #include "EthernetInterface.h"
   3
   4 const char* MCAST_GRP = "224.1.1.1";
   5 const int MCAST_PORT = 5007;
   6
   7 int main() {
   8     EthernetInterface eth;
   9     eth.init(); //Use DHCP
  10     eth.connect();
  11
  12     UDPSocket server;
  13     server.bind(MCAST_PORT);
  14     if (server.join_multicast_group(MCAST_GRP) != 0) {
  15         printf("Error joining the multicast group\n");
  16         while (true) {}
  17     }
  18
  19     Endpoint client;
  20     char buffer[256];
  21     while (true) {
  22         printf("\nWait for packet...\n");
  23         int n = server.receiveFrom(client, buffer, sizeof(buffer));
  24
  25         printf("Packet from \"%s\": %s\n", client.get_address(), buffer);
  26     }
  27 }