kc3-lang/gnulib/tests/socket-server.h

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• Hash : a3fd683d
  Author :
  Date : 2017-01-01T02:59:23
  

  version-etc: new year
  
  * build-aux/gendocs.sh (version):
  * doc/gendocs_template:
  * doc/gendocs_template_min:
  * doc/gnulib.texi:
  * lib/version-etc.c (COPYRIGHT_YEAR):
  Update copyright dates by hand in templates and the like.
  * all files: Run 'make update-copyright'.
  

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• tests/socket-server.h

• /* Create sockets for use in tests (server side).
     Copyright (C) 2011-2017 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 3 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, see <http://www.gnu.org/licenses/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
  
  #include <stdio.h>
  #include <sys/socket.h>
  #include <netinet/in.h>
  #include <arpa/inet.h>
  
  /* Creates a server that can be used to listen on incoming
     connections.  It uses the IPv4 protocol.
     If PORT is 0, a port is assigned by the kernel.
     Returns the server.  Returns the chosen port in *PPORT.  */
  static int
  create_server (int port, unsigned int max_backlog, int *pport)
  {
    int server;
  
    /* Create a server socket.  */
    server = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (server < 0)
      {
        fputs ("Skipping test: cannot create server socket: socket() failed\n",
               stderr);
        exit (77);
      }
    /* Bind it to a local IPv4 address.  */
    if (port != 0)
      {
        /* Set an option for the next bind() call: Avoid an EADDRINUSE error
           in case there are TIME_WAIT or CLOSE_WAIT sockets hanging around on
           the port. (Sockets in LISTEN or ESTABLISHED state on the same port
           will still yield an error.)  */
        unsigned int flag = 1;
        if (setsockopt (server, SOL_SOCKET, SO_REUSEADDR, &flag,
                        sizeof (flag))
            < 0)
          {
            fputs ("Skipping test: cannot create server socket: setsockopt() failed\n",
                   stderr);
            exit (77);
          }
      }
    {
      struct sockaddr_in addr;
  
      memset (&addr, 0, sizeof (addr)); /* needed on AIX and OSF/1 */
      addr.sin_family = AF_INET;
      #if 0 /* Unoptimized */
      inet_pton (AF_INET, "127.0.0.1", &addr.sin_addr);
      #elif 0 /* Nearly optimized */
      addr.sin_addr.s_addr = htonl (0x7F000001); /* 127.0.0.1 */
      #else /* Fully optimized */
      {
        unsigned char dotted[4] = { 127, 0, 0, 1 }; /* 127.0.0.1 */
        memcpy (&addr.sin_addr.s_addr, dotted, 4);
      }
      #endif
      addr.sin_port = htons (port);
  
      if (bind (server, (const struct sockaddr *) &addr, sizeof (addr)) < 0)
        {
          fputs ("Skipping test: cannot create server socket: bind() failed\n",
                 stderr);
          exit (77);
        }
    }
    if (port == 0)
      {
        /* Get the port that was assigned by bind().  */
        struct sockaddr_in addr;
        socklen_t addrlen = sizeof (addr);
  
        if (getsockname (server, (struct sockaddr *) &addr, &addrlen) < 0)
          {
            fputs ("Skipping test: cannot create server socket: getsockname() failed\n",
                   stderr);
            exit (77);
          }
        port = ntohs (addr.sin_port);
      }
    /* Start listening for a connection from the child process.  */
    if (listen (server, max_backlog) < 0)
      {
        fputs ("Skipping test: cannot create server socket: listen() failed\n",
               stderr);
        exit (77);
      }
  
    *pport = port;
    return server;
  }
  
  /* Creates a server socket, by accepting a connection to a server.  */
  static int
  create_server_socket (int server)
  {
    struct sockaddr_storage addr;
    socklen_t addrlen = sizeof (addr);
    int connected_socket = accept (server, (struct sockaddr *) &addr, &addrlen);
    ASSERT (connected_socket >= 0);
    return connected_socket;
  }
  

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