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Diffstat (limited to 'manual/examples/inetcli.c')
-rw-r--r-- | manual/examples/inetcli.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/manual/examples/inetcli.c b/manual/examples/inetcli.c new file mode 100644 index 0000000..258c689 --- /dev/null +++ b/manual/examples/inetcli.c @@ -0,0 +1,59 @@ +#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); +} |