cdev-1.7.2n

extensions/cdevGenericServer/cdevClient/ServerHandler.h

@@ -0,0 +1,97 @@
+#if !defined (_SERVER_HANDLER_H_)
+#define _SERVER_HANDLER_H_
+
+// *****************************************************************************
+// * SIG_PIPE_HANDLED:
+// *    This definition tells the SocketWriter class not to independently
+// *    handle the SIGPIPE signal.
+// *****************************************************************************
+#define SIG_PIPE_HANDLED 1
+
+#include "cdevEventHandler.h"
+#include "cdevAddr.h"
+#include "cdevSocketConnector.h"
+#include "cdevReactor.h"
+
+#include "SocketUtil.h"
+#include "fifo.h"
+
+class ServerInterface;
+class ServerHandlerCallbackNode;
+class SignalManager;
+
+// *****************************************************************************
+// * ServerHandlerCallback :
+// *	This class is used by other classes to register to be informed when the
+// * 	ServerHandler is destroyed.
+// *****************************************************************************
+class GENERIC_SERVER_API ServerHandlerCallback 
+{
+public:
+	ServerHandlerCallback                     ( void ) {}
+	virtual     ~ServerHandlerCallback        ( void ) {}
+	virtual void executeServerHandlerCallback (class ServerHandler * handler) = 0;
+};
+
+
+// *****************************************************************************
+// * ServerHandler:
+// *	This class provides the mechanisms that will be used to service the
+// *	requests of a client.
+// *****************************************************************************
+class GENERIC_SERVER_API ServerHandler :	public cdevEventHandler, 
+			public SocketReader,
+			public SocketWriter
+{
+protected:
+	static SignalManager        signalManager;
+	static int                  signalManagerInit;
+		
+	char                        hostName   [MAXHOSTNAMELEN + 1];	
+	char                        server      [256];
+	FifoQueue                 & queue;
+	cdevSocketConnector         stream; 
+	ServerInterface           * serverface;
+	ServerHandlerCallbackNode * callbacks;
+	size_t                      enqueuedPackets;
+	size_t                      enqueuedBytes;
+	short                       clientID;
+	int                         contextID;
+	int                         tagChanged;
+	int                         serverQuitFlag;	
+
+public:
+	ServerHandler                                (char * Server, ServerInterface * Interface);
+	~ServerHandler                               (void);
+	virtual int                outputError       (int severity, char *name, char *formatString, ...);
+
+	virtual int                open              (const cdevAddr &addr);
+
+	char                     * getHostName       (void);
+	char                     * getName           (void) const;
+	virtual int                getHandle         (void) const;
+	virtual char             * getServer         (void) const;
+
+	virtual int                handleClose       (void);
+	virtual int                handleInput       (void);
+ 	virtual int                handleOutput      (void);
+	virtual int                handleExcept      (void);
+		
+	virtual void registerServerCallback          (ServerHandlerCallback *);
+	virtual void unregisterServerCallback        (ServerHandlerCallback *);
+
+	void enqueue   (char * buf, size_t  len); 
+	void undequeue (char * buf, size_t  len) { queue.undequeue(buf, len); }
+	int  dequeue   (char **buf, size_t *len) { return queue.dequeue(buf, len); }
+	int  empty     (void)                    { return queue.empty(); }
+
+	static short getNextClientID  ( void );
+	short        getClientID      ( void )           { return clientID; }
+	void         setClientID      ( short ClientID ) { clientID=ClientID; }
+	int          getContextID     ( void )           { return contextID; }
+	void         setContextID     ( int ContextID )  { contextID = ContextID; }
+	int          getTagChangeFlag ( void )           { return tagChanged; }
+	void         setTagChangeFlag ( int flag )       { tagChanged = flag; }
+};
+
+#endif /* _SERVER_HANDLER_H_ */