add

+/*
+ * Copyright 2007 Stephen Liu
+ * For license terms, see the file COPYING along with this library.
+ */
+
+
+#ifndef __sphandler_hpp__
+#define __sphandler_hpp__
+
+class SP_Buffer;
+class SP_Request;
+class SP_Response;
+class SP_Message;
+
+struct event;
+struct timeval;
+
+class SP_Handler {
+public:
+	virtual ~SP_Handler();
+
+	// return -1 : terminate session, 0 : continue
+	virtual int start( SP_Request * request, SP_Response * response ) = 0;
+
+	// return -1 : terminate session, 0 : continue
+	virtual int handle( SP_Request * request, SP_Response * response ) = 0;
+
+	virtual void error( SP_Response * response ) = 0;
+
+	virtual void timeout( SP_Response * response ) = 0;
+
+	virtual void close() = 0;
+};
+
+class SP_TimerHandler {
+public:
+	virtual ~SP_TimerHandler();
+
+	// return -1 : terminate timer, 0 : continue
+	virtual int handle( SP_Response * response, struct timeval * timeout ) = 0;
+};
+
+/**
+ * @note Asynchronous Completion Token
+ */
+class SP_CompletionHandler {
+public:
+	virtual ~SP_CompletionHandler();
+
+	virtual void completionMessage( SP_Message * msg ) = 0;
+};
+
+class SP_DefaultCompletionHandler : public SP_CompletionHandler {
+public:
+	SP_DefaultCompletionHandler();
+	~SP_DefaultCompletionHandler();
+
+	virtual void completionMessage( SP_Message * msg );
+};
+
+class SP_HandlerFactory {
+public:
+	virtual ~SP_HandlerFactory();
+
+	virtual SP_Handler * create() const = 0;
+
+	virtual SP_CompletionHandler * createCompletionHandler() const;
+};
+
+#endif
+