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


int wait_for_connect(u_short port)
{
	int sock = 0;
	int read_fd = 0;
	struct sockaddr_in localaddr, caller_addr;
	u_int addr_len = 0;

	sock = socket(AF_INET, SOCK_DGRAM, 0);
	if(sock < 0) {
		perror("socket (sock)");
		exit(1);
	}
	memset(&localaddr, 0, sizeof(localaddr));
	localaddr.sin_family = AF_INET;
	localaddr.sin_addr.s_addr = htonl(INADDR_ANY);
	localaddr.sin_port = htons(port);
	if( bind(sock, (sockaddr *) &localaddr, sizeof(localaddr)) < 0) {
		perror("bind ");
		exit(1);
	}

	return sock;
}