#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/time.h>

int main(int argc, char** argv)
{
  int sock;
  struct sockaddr_in addr;
  struct sockaddr_in dest;
  int addrlen = sizeof(dest);

  char b0[1024];

  addr.sin_family = AF_INET;
  addr.sin_port = htons(16385);
  addr.sin_addr.s_addr = INADDR_ANY;

  sock = socket(AF_INET, SOCK_DGRAM, 0);
  bind(sock, (struct sockaddr *)&addr, sizeof(addr));

  for(;;){
    recvfrom(sock, (void*)b0, sizeof(b0), 0, (struct sockaddr*)&dest, &addrlen);
    sendto(sock, (void*)b0, sizeof(b0), 0, (struct sockaddr *)&dest, sizeof(dest));
  }

  close(sock);

  return 0;
}