    // ------------------------------- //
    // -------- Start of File -------- //
    // ------------------------------- //
    // ----------------------------------------------------------- //
    // C++ Header File Name: m_thread.h
    // C++ Compiler Used: MSVC, GCC
    // Produced By: DataReel Software Development Team
    // File Creation Date: 10/17/2001
    // Date Last Modified: 06/17/2016
    // Copyright (c) 2001-2024 DataReel Software Development
    // ----------------------------------------------------------- //
    // ---------- Include File Description and Details  ---------- //
    // ----------------------------------------------------------- //
    /*
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
    USA

    Multi-threaded server framework using the gxSSL and gxThread
    libraries.
    */
    // ----------------------------------------------------------- //
    #ifndef __GX_S_MTHREAD_SERVER_HPP__
    #define __GX_S_MTHREAD_SERVER_HPP__

    #include "gxdlcode.h"

    #include "gxmutex.h"
    #include "gxcond.h"
    #include "gxthread.h"
    #include "gxsocket.h"
    #include "futils.h"
    #include "gxssl.h"

    // --------------------------------------------------------------
    // Constants
    // --------------------------------------------------------------
    // Thread constants
    const int DISPLAY_THREAD_RETRIES = 3;
    // --------------------------------------------------------------

    // Server configuration
    struct  ServerConfig {
      ServerConfig();
      ~ServerConfig();

      // Server configuration variables
      gxsPort_t port;     // Server's port number
      int accept_clients; // True while accepting

      // gxThread variables
      thrPool *client_request_pool; // Worker threads processing client requests

      // gxThread synchronization interface
      gxMutex display_lock;      // Mutex object used to lock the display
      gxCondition display_cond;  // Condition variable used with the display lock
      int display_is_locked;     // Display lock Boolean predicate
    };

    // Client socket type used to associate client sockets other
    // data types.
    struct ClientSocket_t
    {
      ClientSocket_t() {
        client_socket = -1;
        openssl = 0;
      }
      ~ClientSocket_t() { FreeSSL(); }

      void FreeSSL();

      gxsSocket_t client_socket; // Client socket
      gxSSL *openssl; // Open SSL object
    };

    class ClientRequestThread : public gxSocket, public gxThread
    {
    public:
      ClientRequestThread() { }
      ~ClientRequestThread() { }

    public: // Client routines
      void HandleClientRequest(ClientSocket_t *s);

    private: // gxThread Interface
      void *ThreadEntryRoutine(gxThread_t *thread);
      void ThreadExitRoutine(gxThread_t *thread);
      void ThreadCleanupHandler(gxThread_t *thread);
    };

    class ServerThread : public gxSocket, public gxThread
    {
    public:
      ServerThread() { }
      ~ServerThread() { }

    public: // Server functions
      int InitServer(int max_connections = SOMAXCONN);

    private: // gxThread Interface
      void *ThreadEntryRoutine(gxThread_t *thread);
      void ThreadExitRoutine(gxThread_t *thread);
      void ThreadCleanupHandler(gxThread_t *thread);

    public: // Server data members
      ClientRequestThread request_thread;
      gxSSL openssl;
    };

    // --------------------------------------------------------------
    // Standalone functions
    // --------------------------------------------------------------
    void PrintMessage(const char *s1 = " ", const char *s2 = " ",
    		  const char *s3 = " ");
    void ReportError(const char *s1 = " ", const char *s2 = " ",
    		 const char *s3 = " ");
    int CheckSocketError(gxSocket *s, const char *mesg = 0,
    		     int report_error = 1);
    int CheckThreadError(gxThread_t *thread, const char *mesg = 0,
    		     int report_error = 1);
    // --------------------------------------------------------------

    // --------------------------------------------------------------
    // Globals configuration variables
    // --------------------------------------------------------------
    extern ServerConfig ServerConfigSruct;
    extern ServerConfig *servercfg;
    // --------------------------------------------------------------

    #endif // __GX_S_MTHREAD_SERVER_HPP__
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    // ------------------------------- //