#include <sys/types.h>
#ifndef __MINGW32__
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#include "socket.h"
#include "ndelay.h"

int socket_tcp4(void) {
#ifdef SOCK_NONBLOCK
  return socket(PF_INET,SOCK_STREAM|SOCK_NONBLOCK,IPPROTO_TCP);
#else
  int s=socket_tcp4b();
  if (s==-1) return -1;
  if (ndelay_on(s) == -1) { close(s); return -1; }
  return s;
#endif
}