include stdio include sys socket include sys select include arpa inet

#include <stdio.h>

#include <sys/socket.h>
#include <sys/select.h>

#include <arpa/inet.h>
#include <netinet/in.h>

int
main (int argc, char **argv)
{
  int sockfd, ret;
  struct sockaddr_in sin;
  char buffer[1024];

  sockfd = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
  connect (sockfd, (struct sockaddr *) &sin, sizeof (sin));

  fd_set readfd, tempfd;
  FD_ZERO (&tempfd);

  for (;;)
    {
      readfd = tempfd;
      if (pselect (sockfd + 1, &readfd, NULL, NULL, NULL, NULL) < 0)
        continue;

      ret = read (sockfd, buffer, sizeof (buffer));

      if (ret < 0)
        break;
    }

  close (sockfd);
  return 0;
}