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58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* Create sockets for use in tests (client side).
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Copyright (C) 2011-2017 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2011. */
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#include <stdio.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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/* Creates a client socket, by connecting to a server on the given port. */
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static int
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create_client_socket (int port)
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{
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int client_socket;
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/* Create a client socket. */
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client_socket = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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ASSERT (client_socket >= 0);
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/* Connect to the server process at the specified port. */
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{
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struct sockaddr_in addr;
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memset (&addr, 0, sizeof (addr)); /* needed on AIX and OSF/1 */
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addr.sin_family = AF_INET;
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#if 0 /* Unoptimized */
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inet_pton (AF_INET, "127.0.0.1", &addr.sin_addr);
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#elif 0 /* Nearly optimized */
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addr.sin_addr.s_addr = htonl (0x7F000001); /* 127.0.0.1 */
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#else /* Fully optimized */
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{
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unsigned char dotted[4] = { 127, 0, 0, 1 }; /* 127.0.0.1 */
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memcpy (&addr.sin_addr.s_addr, dotted, 4);
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}
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#endif
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addr.sin_port = htons (port);
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ASSERT (connect (client_socket,
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(const struct sockaddr *) &addr, sizeof (addr))
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== 0);
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}
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return client_socket;
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}
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