#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>

int main(int ac, char **av)
{
	int sk;
	int on;
	struct sockaddr_in sa;
	
	if (!av[1])
	  return 1;
	sk = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
	assert(sk >= 0);
	on = 1;
	assert(!setsockopt(sk, SOL_TCP, TCP_NODELAY, &on, sizeof(on)));
	on = fcntl(F_GETFL, sk);
	on |= O_NONBLOCK;
	fcntl(sk, F_SETFL, on);
	memset(&sa, 0, sizeof(struct sockaddr_in));
	sa.sin_family = AF_INET;
	sa.sin_port = htons(atoi(av[1]));
	printf("%d, %d, %s", bind(sk, &sa, sizeof(struct sockaddr_in)), errno, strerror(errno));
	pause();	
	return 0;
}