+ /** Override this function to indicate writeability.
+ * @return This should return true if the function
+ * wishes to receive EVENT_WRITE events. Do not change
+ * what this function returns while the event handler
+ * is still added to a SocketEngine instance!
+ * If this function is unimplemented, the base class
+ * will return false.
+ *
+ * NOTE: You cannot set both Readable() and
+ * Writeable() to true. If you wish to receive
+ * a write event for your object, you must call
+ * SocketEngine::WantWrite() instead. This will
+ * trigger your objects next EVENT_WRITE type event.
+ */
+ virtual bool Writeable();
+
+ /** Process an I/O event.
+ * You MUST implement this function in your derived
+ * class, and it will be called whenever read or write
+ * events are received, depending on what your functions
+ * Readable() and Writeable() returns and wether you
+ * previously made a call to SocketEngine::WantWrite().
+ * @param et either one of EVENT_READ for read events,
+ * and EVENT_WRITE for write events.
+ */
+ virtual void HandleEvent(EventType et, int errornum = 0) = 0;
+
+#ifdef WINDOWS
+
+ /** "Fake" file descriptor. This is windows-specific.
+ */
+ int m_internalFd;
+
+ /** Pointer to read event. We delete this so the buffer can't be used
+ * after the socket is deleted, and so it doesn't leak memory
+ */
+ void* m_readEvent;
+ /** Pointer to a write event.
+ */
+ void* m_writeEvent;
+ /** Pointer to an accept event.
+ */
+ void* m_acceptEvent;
+
+#endif
+};
+
+/** Provides basic file-descriptor-based I/O support.