Diff: HTTPWebSocketHandler.h

Revision:

0:6dee052a3fa4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HTTPWebSocketHandler.h	Tue Jul 26 05:30:53 2011 +0000
@@ -0,0 +1,60 @@
+#ifndef HTTP_WEB_SOCKET_HANDLER_H
+#define HTTP_WEB_SOCKET_HANDLER_H
+
+#include "mbed.h"
+#include "HTTPServer.h"
+#include "TemperatureSensor.h"
+#include "RGBLed.h"
+
+// Abstrct base class for state delegation
+class HTTPWebSocketState : public HTTPData {
+public:
+    virtual HTTPStatus init(HTTPConnection *conn) = 0;
+    virtual HTTPHandle data(HTTPConnection *conn, void *data, int len) = 0;
+    virtual HTTPHandle send(HTTPConnection *conn, int maxData) = 0;
+};
+
+// State class for connecting the WebSocket, performing security handshake
+class HTTPWebSocketConnectingState : public HTTPWebSocketState {
+public:
+    HTTPWebSocketConnectingState();
+    virtual HTTPStatus init(HTTPConnection *conn);
+    virtual HTTPHandle data(HTTPConnection *conn, void *data, int len);
+    virtual HTTPHandle send(HTTPConnection *conn, int maxData);
+private:
+    // Helper functions
+    uint32_t extractNumber(const char *keyValue);
+    uint32_t countSpaces(const char *keyValue);
+    uint32_t computeKeyPart(const char *keyValue);
+    void hexStringToBinary(const char *hex, char *binary);
+    
+    uint8_t challange[16];
+};
+
+// State class for streaming the WebSocket
+class HTTPWebSocketStreamingState : public HTTPWebSocketState {
+public:
+    HTTPWebSocketStreamingState();
+    virtual HTTPStatus init(HTTPConnection *conn);
+    virtual HTTPHandle data(HTTPConnection *conn, void *data, int len);
+    virtual HTTPHandle send(HTTPConnection *conn, int maxData);
+private:
+    DigitalOut led;
+    int sendCnt;
+};
+
+// HTTP handler for resorces that become WebSockets
+class HTTPWebSocketHandler : public HTTPHandler {
+public:
+    HTTPWebSocketHandler(const char *path) : HTTPHandler(path) {
+        printf("HTTPWebSocketHandler: %s\n", path);
+    }
+    
+protected:
+    virtual void reg(HTTPServer *);
+    virtual HTTPStatus init(HTTPConnection *conn) const;
+    virtual HTTPHandle data(HTTPConnection *conn, void *data, int len) const; 
+    virtual HTTPHandle send(HTTPConnection *, int) const;   
+};
+
+#endif