#include <arpa/inet.h>
  #include <netinet/in.h>
  #include <stdio.h>
  #include <sys/types.h>
  #include <sys/socket.h>
  #include <unistd.h>
  #include <stdio.h>

  #define BUFLEN 1472
  #define NPACK 100000
  #define PORT 1028


  void diep(char *s)
  {
    perror(s);
    exit(1);
  }

  int main(void){

	FILE *f = fopen("dumpc.bin", "wb");
    struct sockaddr_in si_me, si_other;
    int s, i, slen=sizeof(si_other);
    char buf[BUFLEN];

    if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
      diep("socket");

    memset((char *) &si_me, 0, sizeof(si_me));
    si_me.sin_family = AF_INET;
    si_me.sin_port = htons(PORT);
    si_me.sin_addr.s_addr = htonl(INADDR_ANY);
    if (bind(s, &si_me, sizeof(si_me))==-1)
        diep("bind");

    for (i=0; i<NPACK; i++) {
      if (recvfrom(s, buf, BUFLEN, 0, &si_other, &slen)==-1)
        diep("recvfrom()");
      fwrite(buf, 1, 1472, f);
      //memset(buf, 0xff,1472);
      //printf("%d\n", i);
      //printf("Received packet from %s:%d\n",
      //       inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port));
    }
	fclose(f);
    close(s);
    return 0;
 }