From 8f27e65bddd7d4b8515ce620fb485fdd78fcdf89 Mon Sep 17 00:00:00 2001
From: Constantin Jucovschi <cj@ubuntu.localdomain>
Date: Fri, 24 Apr 2009 07:20:22 -0400
Subject: Initial commit

---
 network/akgnet_server.hh | 157 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 network/akgnet_server.hh

(limited to 'network/akgnet_server.hh')

diff --git a/network/akgnet_server.hh b/network/akgnet_server.hh
new file mode 100644
index 0000000..40d9129
--- /dev/null
+++ b/network/akgnet_server.hh
@@ -0,0 +1,157 @@
+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community 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.
+*
+* Rasdaman community 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 rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+/
+/**
+ * INCLUDE: akgnet_server.hh
+ *
+ * MODULE:  akg network
+ * CLASS:   GenericServer, BlockingServer
+ *
+ * COMMENTS:
+ * Namespace akg
+ * 
+*/
+
+#ifndef AKGNET_SERVER_HH
+#define AKGNET_SERVER_HH
+
+//#### Includes #################################
+
+#include "akgnet_socket.hh"
+#include "akgnet_selector.hh"
+#include "akgnet_commbuffer.hh"
+
+//###############################################
+
+
+namespace akg
+  {
+/** Abstract base class for servers. Offers basic functionality
+    for opening the listen socket and accepting a new connection
+    and other helper functions for more evoluate servers
+*/   
+class GenericServer
+  {
+    public:
+      /// Default constructor
+      GenericServer() throw();
+      
+      /// Destructor
+      virtual ~GenericServer() throw();
+      
+      //*************************
+      /** Pure function to run the server. Has to initialize 
+          the listen socket, than makes a loop by listening,
+          accepting and dispatching the connection 
+	  for processing. It should'n throw, it has to handle
+	  correcty every exception
+       */
+      virtual bool runServer() throw() =0;
+      //*************************
+      
+      /// Instructs the server to leave the loop (runServer())
+      void shouldExit() throw();
+    
+      /// Sets the listen port
+      void setListenPort(int) throw();
+      
+      /// Returns the listen port
+      int  getListenPort() throw();
+      
+      /** Sets the timeout, how much time the selector should
+          wait for incomming requests
+      */
+      void setTimeout(int sec,int milisec) throw();
+      
+      /// Disables timeout, means wait unlimited
+      void disableTimeout() throw();
+      
+    protected:
+      /// Init the listen socket
+      bool initListenSocket(int port, bool nonblocking) throw();
+      
+      /** Connects a new client by accepting the connection 
+          and setting the ServerSocket in read modus
+      */
+      bool connectNewClient(ServerSocket&) throw();
+      
+      /** Closes the given Socket and removes it
+          from the Selector
+      */
+      void closeSocket(Socket&) throw();
+      
+      ListenSocket listenSocket;
+      int          listenPort;
+      
+      Selector     selector;
+      
+      bool exitRequest;
+      
+    private:
+      /// unimplemented, objects of this type can't be copied
+      GenericServer(const GenericServer&);
+      /// unimplemented, objects of this type can't be copied
+      GenericServer& operator=(const GenericServer&);
+   }; 
+
+
+/** Base class for a simple blocking server, capable
+    of dealing with a single client. Don't use except for
+    very simple cases. 
+    This version doesn't care much about errors
+*/     
+class BlockingServer : public GenericServer
+  {
+    public:
+      /// Default constructor
+      BlockingServer()  throw();
+      /// Destructor
+      ~BlockingServer() throw();
+      
+      /** runs the server. Accepts only one connection
+          and blocks until the request is done
+      */
+      bool runServer() throw();
+    protected:
+      //************************************************
+      /** Pure function to process the request. It has to read,
+          process and write the answer, because afterwards 
+	  the socket is closed. Don't throw!
+	*/ 
+      virtual void executeRequest(ServerSocket&) throw() =0;
+      
+      /** Pure function to execute on timeout. Don't throw!
+      */
+      virtual void executeTimeout() throw() =0;
+      //************************************************
+    private:
+      ServerSocket serverSocket;
+      
+      /// unimplemented, objects of this type can't be copied
+      BlockingServer(const BlockingServer&);
+      /// unimplemented, objects of this type can't be copied
+      BlockingServer& operator=(const BlockingServer&);
+   }; 
+   
+   
+} //namespace
+#endif
-- 
cgit