#include "socketutil.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <stdio.h>
#include <sys/epoll.h>
#include <errno.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <string.h>
#include <sys/stat.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <netdb.h>
int SocketUtil::createServerSocket(char* port)
{
	struct addrinfo hints;
	struct addrinfo *result, *rp;
	int s, sfd;

	memset (&hints, 0, sizeof (struct addrinfo));
	hints.ai_family = AF_UNSPEC;     /* Return IPv4 and IPv6 choices */
	hints.ai_socktype = SOCK_STREAM; /* We want a TCP socket */
	hints.ai_flags = AI_PASSIVE;     /* All interfaces */

	s = getaddrinfo (NULL, port, &hints, &result);
	if (s != 0)
	{
	//	fprintf (stderr, "getaddrinfo: %s\n", gai_strerror (s));
		return -1;
	}

	for (rp = result; rp != NULL; rp = rp->ai_next)
	{
		sfd = socket (rp->ai_family, rp->ai_socktype, rp->ai_protocol);
		if (sfd == -1)
			continue;

		s = bind (sfd, rp->ai_addr, rp->ai_addrlen);
		if (s == 0)
		{
			/* We managed to bind successfully! */
			break;
		}

		close (sfd);
	}

	if (rp == NULL)
	{
		fprintf (stderr, "Could not bind\n");
		return -1;
	}

	freeaddrinfo (result);

	return sfd;
}
int SocketUtil::setNonBlocking(int sfd)
{
	int flags, s;

	flags = fcntl (sfd, F_GETFL, 0);
	if (flags == -1)
	{
		perror ("fcntl");
		return -1;
	}

	flags |= O_NONBLOCK;
	s = fcntl (sfd, F_SETFL, flags);
	if (s == -1)
	{
		perror ("fcntl");
		return -1;
	}

	return 0;
}