tmk_core/tool/mbed/mbed-sdk/libraries/tests/net/echo/udp_server/main.cpp

   1 #include "mbed.h"
   2 #include "test_env.h"
   3 #include "EthernetInterface.h"
   4
   5 namespace {
   6     const int ECHO_SERVER_PORT = 7;
   7     const int BUFFER_SIZE = 64;
   8 }
   9
  10 int main (void) {
  11     MBED_HOSTTEST_TIMEOUT(20);
  12     MBED_HOSTTEST_SELECT(udpecho_server_auto);
  13     MBED_HOSTTEST_DESCRIPTION(UDP echo server);
  14     MBED_HOSTTEST_START("NET_5");
  15
  16     EthernetInterface eth;
  17     eth.init(); //Use DHCP
  18     eth.connect();
  19     printf("MBED: Server IP Address is %s:%d\r\n", eth.getIPAddress(), ECHO_SERVER_PORT);
  20
  21     UDPSocket server;
  22     server.bind(ECHO_SERVER_PORT);
  23
  24     Endpoint client;
  25     char buffer[BUFFER_SIZE] = {0};
  26     printf("MBED: Waiting for packet...\r\n");
  27     while (true) {
  28         int n = server.receiveFrom(client, buffer, sizeof(buffer));
  29         if (n > 0) {
  30             //printf("Received packet from: %s\n", client.get_address());
  31             const int buffer_string_end_index = n >= BUFFER_SIZE ? BUFFER_SIZE-1 : n;
  32             buffer[buffer_string_end_index] = '\0';
  33             //printf("Server received: %s\n", buffer);
  34             server.sendTo(client, buffer, n);
  35         }
  36     }
  37 }