Revision 1:0249701444ee, committed 2012-07-11

Comitter:

mimil

Date:

Wed Jul 11 13:55:07 2012 +0000

Parent:

0:ed7287a3edbf

Commit message:

new version using a web server to receive messages from the sen.se platform

Changed in this revision

--- a/SenseClient.cpp	Tue Sep 06 13:31:10 2011 +0000
+++ b/SenseClient.cpp	Wed Jul 11 13:55:07 2012 +0000
@@ -17,9 +17,13 @@
 #include "HTTPClient.h"
 
 
+
 SenseClient::SenseClient(const string& senseKey, const string& httpproxy) :  _jsonContent("application/json"), _jsonRespContent("application/json") {
+
+
     _key = senseKey;
-    _proxy = httpproxy; 
+    _proxy = httpproxy;
+
 }
 
 SenseClient::~SenseClient() {
@@ -27,44 +31,105 @@
 
 void SenseClient::PostEvent(const string& feedID, const string& value) {
     _jsonContent.set("{\"feed_id\":"+feedID+", \"value\":"+value+"}");
-    
+
     string uri = "http://api.sen.se/event_api/events/";
     HTTPClient _client;
     _client.setRequestHeader("sense_key", _key);
-    if(!_proxy.empty()) {
+    if (!_proxy.empty()) {
         _client.setProxy(_proxy.c_str());
     }
-    
+
     _result = _client.post(uri.c_str(), _jsonContent, &_jsonRespContent);
     _response = _client.getHTTPResponseCode();
 }
-  
+
 void SenseClient::GetLastFeedEvent(const string& feedID) {
     string uri = "http://api.sen.se/event_api/feeds/"+feedID+"/last_event/";
 
     HTTPClient _client;
     _client.setRequestHeader("sense_key", _key);
-    if(!_proxy.empty()) {
+    if (!_proxy.empty()) {
         _client.setProxy(_proxy.c_str());
     }
-    
+
     _result = _client.get(uri.c_str(), &_jsonRespContent);
     _response = _client.getHTTPResponseCode();
 }
 
 void SenseClient::GetDeviceLastEvent(const string& deviceID) {
     string uri = "http://api.sen.se/devices/"+deviceID+"/last_event/";
-    
+
     HTTPClient _client;
     _client.setRequestHeader("sense_key", _key);
-    if(!_proxy.empty()) {
+    if (!_proxy.empty()) {
         _client.setProxy(_proxy.c_str());
     }
-    
+
     _result = _client.get(uri.c_str(), &_jsonRespContent);
     _response = _client.getHTTPResponseCode();
 }
 
+/**
+* Returns the given parameter value identified by its name from the given http query string.
+*
+* @return The parameter value 
+* @param queryString The http query string
+* @param name The parameter name
+*/
+char* SenseClient::getParam(char *queryString, const char *name) {
+    char *pos1 = strstr(queryString, name);
+
+    if (pos1) {
+        pos1 += strlen(name);
+
+        if (*pos1 == '=') { // Make sure there is an '=' where we expect it
+            pos1++;
+
+            // compute the size of the buffer
+            char *pos2 = pos1;
+            while (*pos2 && *pos2 != '&') {
+                pos2++;
+            }
+            char* value = (char *) malloc(sizeof(char) * (pos2-pos1+1));
+            char* ret = value;
+
+            // store the string in the buffer
+
+            while (*pos1 && *pos1 != '&') {
+                if (*pos1 == '%') { // Convert it to a single ASCII character and store at our Value
+                    *value++ = (char)ToHex(pos1[1]) * 16 + ToHex(pos1[2]);
+                    pos1 += 3;
+                } else if ( *pos1=='+' ) { // If it's a '+', store a space at our Valueination
+                    *value++ = ' ';
+                    pos1++;
+                } else {
+                    *value++ = *pos1++; // Otherwise, just store the character at our Value
+                }
+            }
+
+            *value++ = '\0';
+            return ret;
+        }
+
+    }
+
+    return NULL;
+}
+
+/**
+* Starts an http server to receive messages from sen.se platform. A function void parseEvent(char* content) MUST be defined in your main.
+*
+* @param port The port on which to start the http server
+*/
+void SenseClient::startHttpServer(int port) {
+
+    _svr.addHandler<SenseHandler>("/");
+    _svr.bind(port);
+
+    printf("Listening on port %d...\r\n", port);
+
+}
+
 // http result and response
 HTTPResult SenseClient::Result() {
     return _result;

--- a/SenseClient.h	Tue Sep 06 13:31:10 2011 +0000
+++ b/SenseClient.h	Wed Jul 11 13:55:07 2012 +0000
@@ -18,6 +18,14 @@
 
 #include "mbed.h"
 #include "HTTPClient.h"
+#include "HTTPServer.h"
+#include "SenseHandler.h"
+
+
+
+
+// Helper macro to convert two-character hex strings to character value
+#define ToHex(Y) (Y>='0'&&Y<='9'?Y-'0':Y-'A'+10)
 
 /**
 * SenseClient is an API to interact with Sen.se platform. 
@@ -182,6 +190,24 @@
     * @returns The content payload.
     */
     HTTPText SenseClient::ResponseContent();
+    
+    /**
+    * Returns the given parameter value identified by its name from the given http query string.
+    *
+    * @return The parameter value 
+    * @param queryString The http query string
+    * @param name The parameter name
+    */
+    char* getParam(char *queryString, const char *name);
+    
+    /**
+    * Starts an http server to receive messages from sen.se platform. A function void parseEvent(char* content) MUST be defined in your main.
+    *
+    * @param port The port on which to start the http server
+    */
+    void startHttpServer(int port);
+    
+   
 
 private:
     HTTPText _jsonContent;
@@ -191,6 +217,9 @@
 
     HTTPResult _result;
     int _response;
+    
+    HTTPServer _svr;
+
 
 };
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SenseHandler.cpp	Wed Jul 11 13:55:07 2012 +0000
@@ -0,0 +1,68 @@
+#include "SenseHandler.h"
+
+
+SenseHandler::SenseHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : HTTPRequestHandler(rootPath, path, pTCPSocket) {}
+
+SenseHandler::~SenseHandler() {}
+
+
+
+void SenseHandler::doGet() {
+    printf("doGet called\r\n");
+    const char* resp = "Hello world !";
+    setContentLen( strlen(resp) );
+    respHeaders()["Connection"] = "close";
+    writeData(resp, strlen(resp));
+}
+
+void SenseHandler::doPost() {
+    printf("doPost called\r\n");
+    int len = dataLen();
+    //string path = path();
+    //string rootPath = rootPath();
+    //readData(char* buf, int len);
+    //respHeaders()["Connection"] = "close";
+    //setContentLen(100);
+    //setErrCode(404);
+    onReadable();
+}
+
+void SenseHandler::doHead() {
+
+}
+
+
+void SenseHandler::onReadable() { //Data has been read
+    printf("onReadable called\r\n");
+    int _datalen = dataLen();   //read POST data length
+
+    //allocate size of readable data
+    char* _send_data = (char *) malloc(sizeof(char) * _datalen + 1);
+
+    //read POST data
+    readData(_send_data, _datalen);
+
+    //char myName[100] = ""; 
+    //getParam("value", myName);
+    //process POST data here, you can call any subroutine from here
+    //printf("value: %s\r\n", myName);
+    
+    //write any response header
+    respHeaders()["Connection"] = "close";
+
+    //http_response contains any html code as my reply
+    //writeData(http_response, strlen(http_response));
+    _send_data[_datalen] = '\0';
+    parseEvent(_send_data);
+
+}
+
+void SenseHandler::onWriteable() { //Data has been written & buf is free
+    close(); //Data written, we can close the connection
+}
+
+void SenseHandler::onClose() { //Connection is closing
+    //Nothing to do
+}
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SenseHandler.h	Wed Jul 11 13:55:07 2012 +0000
@@ -0,0 +1,30 @@
+#ifndef SENSEHANDLER_H
+#define SENSEHANDLER_H
+
+#include "HTTPRequestHandler.h"
+
+extern void parseEvent(char* content);
+
+
+class SenseHandler : public HTTPRequestHandler {
+public:
+    SenseHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket);
+    virtual ~SenseHandler();
+
+//protected:
+    static inline HTTPRequestHandler* inst(const char* rootPath, const char* path, TCPSocket* pTCPSocket) {
+        return new SenseHandler(rootPath, path, pTCPSocket);    //if we ever could do static virtual functions, this would be one
+    }
+
+    virtual void doGet();
+    virtual void doPost();
+    virtual void doHead();
+
+    virtual void onReadable(); //Data has been read
+    virtual void onWriteable(); //Data has been written & buf is free
+    virtual void onClose(); //Connection is closing
+    
+};
+
+
+#endif
\ No newline at end of file