#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;

}