John Lowe / Mbed 2 deprecated WebSockets2

Embedded WebSockets Experiment

Dependencies:   mbed MD5

HTTPWebSocketHandler.h@0:6dee052a3fa4, 2011-07-26 (annotated)

Committer:
nandgate
Date:
Tue Jul 26 05:30:53 2011 +0000
Revision:
0:6dee052a3fa4

        

        
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#ifndef HTTP_WEB_SOCKET_HANDLER_H





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#define HTTP_WEB_SOCKET_HANDLER_H





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#include "mbed.h"





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#include "HTTPServer.h"





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#include "TemperatureSensor.h"





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#include "RGBLed.h"





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// Abstrct base class for state delegation





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class HTTPWebSocketState : public HTTPData {





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public:





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    virtual HTTPStatus init(HTTPConnection *conn) = 0;





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    virtual HTTPHandle data(HTTPConnection *conn, void *data, int len) = 0;





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    virtual HTTPHandle send(HTTPConnection *conn, int maxData) = 0;





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};





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// State class for connecting the WebSocket, performing security handshake





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class HTTPWebSocketConnectingState : public HTTPWebSocketState {





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public:





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    HTTPWebSocketConnectingState();





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    virtual HTTPStatus init(HTTPConnection *conn);





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    virtual HTTPHandle data(HTTPConnection *conn, void *data, int len);





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    virtual HTTPHandle send(HTTPConnection *conn, int maxData);





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private:





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    // Helper functions





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    uint32_t extractNumber(const char *keyValue);





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    uint32_t countSpaces(const char *keyValue);





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    uint32_t computeKeyPart(const char *keyValue);





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    void hexStringToBinary(const char *hex, char *binary);





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    uint8_t challange[16];





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};





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// State class for streaming the WebSocket





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class HTTPWebSocketStreamingState : public HTTPWebSocketState {





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public:





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    HTTPWebSocketStreamingState();





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    virtual HTTPStatus init(HTTPConnection *conn);





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    virtual HTTPHandle data(HTTPConnection *conn, void *data, int len);





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    virtual HTTPHandle send(HTTPConnection *conn, int maxData);





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private:





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    DigitalOut led;





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    int sendCnt;





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};





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// HTTP handler for resorces that become WebSockets





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class HTTPWebSocketHandler : public HTTPHandler {





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public:





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    HTTPWebSocketHandler(const char *path) : HTTPHandler(path) {





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        printf("HTTPWebSocketHandler: %s\n", path);





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    }





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protected:





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    virtual void reg(HTTPServer *);





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    virtual HTTPStatus init(HTTPConnection *conn) const;





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    virtual HTTPHandle data(HTTPConnection *conn, void *data, int len) const; 





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    virtual HTTPHandle send(HTTPConnection *, int) const;   





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};





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#endif