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

   1 #include "mbed.h"
   2 #include "EthernetInterface.h"
   3 #include "test_env.h"
   4
   5 namespace {
   6     const char *HTTP_SERVER_NAME = "utcnist.colorado.edu";
   7     const int HTTP_SERVER_PORT = 37;
   8     const float YEARS_TO_PASS = 114.0;
   9 }
  10
  11
  12 int main() {
  13     MBED_HOSTTEST_TIMEOUT(20);
  14     MBED_HOSTTEST_SELECT(default_auto);
  15     MBED_HOSTTEST_DESCRIPTION(NIST Internet Time Service);
  16     MBED_HOSTTEST_START("NET_2");
  17
  18     bool result = false;
  19     EthernetInterface eth;
  20     eth.init(); //Use DHCP
  21     eth.connect();
  22     printf("UDP client IP Address is %s\n", eth.getIPAddress());
  23
  24     UDPSocket sock;
  25     sock.init();
  26
  27     Endpoint nist;
  28     nist.set_address(HTTP_SERVER_NAME, HTTP_SERVER_PORT);
  29
  30     char out_buffer[] = "plop"; // Does not matter
  31     sock.sendTo(nist, out_buffer, sizeof(out_buffer));
  32
  33     union {
  34         char in_buffer_tab[4];
  35         unsigned int in_buffer_uint;
  36     };
  37
  38     const int n = sock.receiveFrom(nist, in_buffer_tab, sizeof(in_buffer_tab));
  39     if (n > 0) {
  40         result = true;
  41         const unsigned int timeRes = ntohl(in_buffer_uint);
  42         const float years = timeRes / 60.0 / 60.0 / 24.0 / 365.0;
  43         const float days = timeRes / 24.0 / 60.0 / 60.0;
  44         printf("UDP: Received %d bytes from server %s on port %d\r\n", n, nist.get_address(), nist.get_port());
  45         printf("UDP: %u seconds since 01/01/1900 00:00 GMT ... %s\r\n", timeRes, timeRes > 0 ? "[OK]" : "[FAIL]");
  46         printf("UDP: %.2f days since 01/01/1900 00:00 GMT ... %s\r\n", days, timeRes > 0 ? "[OK]" : "[FAIL]");
  47         printf("UDP: %.2f years since 01/01/1900 00:00 GMT ... %s\r\n", years, timeRes > YEARS_TO_PASS ? "[OK]" : "[FAIL]");
  48
  49         if (years < YEARS_TO_PASS) {
  50             result = false;
  51         }
  52     }
  53     sock.close();
  54     eth.disconnect();
  55     MBED_HOSTTEST_RESULT(result);
  56 }