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- #include <stdio.h>
- #include <errno.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <netinet/in.h>
- #include <netdb.h>
-
- #define PORT 5555
- #define MESSAGE "Yow!!! Are we having fun yet?!?"
- #define SERVERHOST "churchy.gnu.ai.mit.edu"
-
- void
- write_to_server (int filedes)
- {
- int nbytes;
-
- nbytes = write (filedes, MESSAGE, strlen (MESSAGE) + 1);
- if (nbytes < 0)
- {
- perror ("write");
- exit (EXIT_FAILURE);
- }
- }
-
-
- int
- main (void)
- {
- extern void init_sockaddr (struct sockaddr_in *name,
- const char *hostname,
- unsigned short int port);
- int sock;
- struct sockaddr_in servername;
-
- /* Create the socket. */
- sock = socket (PF_INET, SOCK_STREAM, 0);
- if (sock < 0)
- {
- perror ("socket (client)");
- exit (EXIT_FAILURE);
- }
-
- /* Connect to the server. */
- init_sockaddr (&servername, SERVERHOST, PORT);
- if (0 > connect (sock,
- (struct sockaddr *) &servername,
- sizeof (servername)))
- {
- perror ("connect (client)");
- exit (EXIT_FAILURE);
- }
-
- /* Send data to the server. */
- write_to_server (sock);
- close (sock);
- exit (EXIT_SUCCESS);
- }
-