/* This example code is placed in the public domain. */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <arpa/inet.h>

#include <netinet/in.h>

#include <unistd.h>

/* tcp.c */

int tcp_connect(void);

void tcp_close(int sd);

/* Connects to the peer and returns a socket

 * descriptor.

 */

extern int tcp_connect(void)

{

        const char *PORT = "5556";

        const char *SERVER = "127.0.0.1";

        int err, sd;

        struct sockaddr_in sa;

        /* connects to server

         */

        sd = socket(AF_INET, SOCK_STREAM, 0);

        memset(&sa, '\0', sizeof(sa));

        sa.sin_family = AF_INET;

        sa.sin_port = htons(atoi(PORT));

        inet_pton(AF_INET, SERVER, &sa.sin_addr);

        err = connect(sd, (struct sockaddr *) &sa, sizeof(sa));

        if (err < 0) {

                fprintf(stderr, "Connect error\n");

                exit(1);

        }

        return sd;

}

/* closes the given socket descriptor.

 */

extern void tcp_close(int sd)

{

        shutdown(sd, SHUT_RDWR);        /* no more receptions */

        close(sd);

}