server.h

00001 #pragma once
00002 
00003 
00004 #include "coap.h"
00005 #include "cantcoap.h"
00006 #include "response.h"
00007 #include "request.h"
00008 
00009 #include <vector>
00010 
00011 enum CoapCode;
00012 
00013 /** Coap Server class
00014  *  Used to process and respond to coap requests
00015  *
00016  * @code
00017  * #include "mbed.h"
00018  * #include "coap.h"
00019  * 
00020  * void get_demo(Request* req, Response* res)
00021  * {
00022  *     // do your stuff here
00023  * }
00024  *             
00025  * int main() {
00026  *     Server server;
00027  *     
00028  *     server.add("/demo", &get_led, GET);
00029  * 
00030  *     while(1)
00031  *     {
00032  *         server.waitForRequest();  
00033  *     };
00034  * }
00035  * @endcode
00036  */
00037 class Server{
00038     
00039     public:
00040     /** Create a new Server instance */
00041     Server();
00042     
00043     /** Add a coap resource
00044      * 
00045      * @param uri The resource URI to respond on
00046      * @param function The corresponding function to call when a request for this resource is received
00047      * @param method The method to respond to (GET, POST, PUT or DELETE)
00048      *
00049      */
00050     void add(char* uri, void (*function)(Request*, Response*), CoapCode method);
00051     
00052     /** Wait for a request and process that request 
00053      * @note This is usually placed inside a loop
00054      */
00055     void waitForRequest();
00056     
00057     /** Enable broadcast functionality
00058      * @param broadcast Boolean value to enable or disable broadcasting functionality
00059      */
00060     void enableBroadcast(int broadcast = true);
00061     
00062     char* getIpAddress();
00063     
00064     
00065     private:
00066     EthernetInterface eth;
00067     UDPSocket server;
00068     Endpoint client;
00069     
00070     struct Resource{
00071         char* uri;
00072         void (*function)(Request*, Response*);
00073         int method;   
00074     };
00075     
00076     std::vector<Resource> resources;
00077     
00078     int findResource(char* uri, CoapPDU::Code method);
00079     
00080     static const int UDP_BUFFER_SIZE = 256;
00081     static const int TOKEN_BUFFER_SIZE = 8;
00082     static const int URI_BUFFER_SIZE = 64;
00083     
00084 };