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Diffstat (limited to 'manual/examples/inetsrv.c')
-rw-r--r-- | manual/examples/inetsrv.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/manual/examples/inetsrv.c b/manual/examples/inetsrv.c deleted file mode 100644 index 01ae631818..0000000000 --- a/manual/examples/inetsrv.c +++ /dev/null @@ -1,120 +0,0 @@ -/* Byte Stream Connection Server Example - Copyright (C) 1991-2017 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License - as published by the Free Software Foundation; either version 2 - of the License, or (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, if not, see <http://www.gnu.org/licenses/>. -*/ - -#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 MAXMSG 512 - -int -read_from_client (int filedes) -{ - char buffer[MAXMSG]; - int nbytes; - - nbytes = read (filedes, buffer, MAXMSG); - if (nbytes < 0) - { - /* Read error. */ - perror ("read"); - exit (EXIT_FAILURE); - } - else if (nbytes == 0) - /* End-of-file. */ - return -1; - else - { - /* Data read. */ - fprintf (stderr, "Server: got message: `%s'\n", buffer); - return 0; - } -} - -int -main (void) -{ - extern int make_socket (uint16_t port); - int sock; - fd_set active_fd_set, read_fd_set; - int i; - struct sockaddr_in clientname; - size_t size; - - /* Create the socket and set it up to accept connections. */ - sock = make_socket (PORT); - if (listen (sock, 1) < 0) - { - perror ("listen"); - exit (EXIT_FAILURE); - } - - /* Initialize the set of active sockets. */ - FD_ZERO (&active_fd_set); - FD_SET (sock, &active_fd_set); - - while (1) - { - /* Block until input arrives on one or more active sockets. */ - read_fd_set = active_fd_set; - if (select (FD_SETSIZE, &read_fd_set, NULL, NULL, NULL) < 0) - { - perror ("select"); - exit (EXIT_FAILURE); - } - - /* Service all the sockets with input pending. */ - for (i = 0; i < FD_SETSIZE; ++i) - if (FD_ISSET (i, &read_fd_set)) - { - if (i == sock) - { - /* Connection request on original socket. */ - int new; - size = sizeof (clientname); - new = accept (sock, - (struct sockaddr *) &clientname, - &size); - if (new < 0) - { - perror ("accept"); - exit (EXIT_FAILURE); - } - fprintf (stderr, - "Server: connect from host %s, port %hd.\n", - inet_ntoa (clientname.sin_addr), - ntohs (clientname.sin_port)); - FD_SET (new, &active_fd_set); - } - else - { - /* Data arriving on an already-connected socket. */ - if (read_from_client (i) < 0) - { - close (i); - FD_CLR (i, &active_fd_set); - } - } - } - } -} |