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/*
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Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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/** \file
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HTTP Client header file
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*/
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#ifndef HTTP_CLIENT_H
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#define HTTP_CLIENT_H
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class HTTPData;
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#include "core/net.h"
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#include "api/TCPSocket.h"
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#include "api/DNSRequest.h"
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#include "HTTPData.h"
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#include "mbed.h"
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#include <string>
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using std::string;
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#include <map>
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using std::map;
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///HTTP client results
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enum HTTPResult
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{
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HTTP_OK, ///<Success
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HTTP_PROCESSING, ///<Processing
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HTTP_PARSE, ///<URI Parse error
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HTTP_DNS, ///<Could not resolve name
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HTTP_PRTCL, ///<Protocol error
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HTTP_NOTFOUND, ///<HTTP 404 Error
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HTTP_REFUSED, ///<HTTP 403 Error
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HTTP_ERROR, ///<HTTP xxx error
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HTTP_TIMEOUT, ///<Connection timeout
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HTTP_CONN ///<Connection error
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};
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#include "core/netservice.h"
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///A simple HTTP Client
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/**
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The HTTPClient is composed of:
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- The actual client (HTTPClient)
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- Classes that act as a data repository, each of which deriving from the HTTPData class (HTTPText for short text content, HTTPFile for file I/O, HTTPMap for key/value pairs, and HTTPStream for streaming purposes)
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*/
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class HTTPClient : protected NetService
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{
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public:
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///Instantiates the HTTP client
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HTTPClient();
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virtual ~HTTPClient();
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///Provides a basic authentification feature (Base64 encoded username and password)
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void basicAuth(const char* user, const char* password); //Basic Authentification
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//High Level setup functions
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///Executes a GET Request (blocking)
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/**
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Executes a GET request on the URI uri
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@param uri : URI on which to execute the request
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@param pDataIn : pointer to an HTTPData instance that will collect the data returned by the request, can be NULL
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Blocks until completion
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*/
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HTTPResult get(const char* uri, HTTPData* pDataIn); //Blocking
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///Executes a GET Request (non blocking)
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/**
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Executes a GET request on the URI uri
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@param uri : URI on which to execute the request
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@param pDataIn : pointer to an HTTPData instance that will collect the data returned by the request, can be NULL
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@param pMethod : callback function
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The function returns immediately and calls the callback on completion or error
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*/
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HTTPResult get(const char* uri, HTTPData* pDataIn, void (*pMethod)(HTTPResult)); //Non blocking
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///Executes a GET Request (non blocking)
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/**
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Executes a GET request on the URI uri
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@param uri : URI on which to execute the request
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@param pDataIn : pointer to an HTTPData instance that will collect the data returned by the request, can be NULL
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@param pItem : instance of class on which to execute the callback method
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@param pMethod : callback method
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The function returns immediately and calls the callback on completion or error
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*/
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template<class T>
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HTTPResult get(const char* uri, HTTPData* pDataIn, T* pItem, void (T::*pMethod)(HTTPResult)) //Non blocking
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{
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setOnResult(pItem, pMethod);
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doGet(uri, pDataIn);
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return HTTP_PROCESSING;
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}
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///Executes a POST Request (blocking)
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/**
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Executes a POST request on the URI uri
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@param uri : URI on which to execute the request
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@param dataOut : a HTTPData instance that contains the data that will be posted
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@param pDataIn : pointer to an HTTPData instance that will collect the data returned by the request, can be NULL
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Blocks until completion
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*/
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HTTPResult post(const char* uri, const HTTPData& dataOut, HTTPData* pDataIn); //Blocking
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///Executes a POST Request (non blocking)
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/**
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Executes a POST request on the URI uri
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@param uri : URI on which to execute the request
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@param dataOut : a HTTPData instance that contains the data that will be posted
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@param pDataIn : pointer to an HTTPData instance that will collect the data returned by the request, can be NULL
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@param pMethod : callback function
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The function returns immediately and calls the callback on completion or error
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*/
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HTTPResult post(const char* uri, const HTTPData& dataOut, HTTPData* pDataIn, void (*pMethod)(HTTPResult)); //Non blocking
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///Executes a POST Request (non blocking)
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/**
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Executes a POST request on the URI uri
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@param uri : URI on which to execute the request
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@param dataOut : a HTTPData instance that contains the data that will be posted
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@param pDataIn : pointer to an HTTPData instance that will collect the data returned by the request, can be NULL
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@param pItem : instance of class on which to execute the callback method
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@param pMethod : callback method
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The function returns immediately and calls the callback on completion or error
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*/
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template<class T>
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HTTPResult post(const char* uri, const HTTPData& dataOut, HTTPData* pDataIn, T* pItem, void (T::*pMethod)(HTTPResult)) //Non blocking
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{
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setOnResult(pItem, pMethod);
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doPost(uri, dataOut, pDataIn);
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return HTTP_PROCESSING;
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}
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///Executes a GET Request (non blocking)
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/**
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Executes a GET request on the URI uri
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@param uri : URI on which to execute the request
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@param pDataIn : pointer to an HTTPData instance that will collect the data returned by the request, can be NULL
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The function returns immediately and calls the previously set callback on completion or error
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*/
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void doGet(const char* uri, HTTPData* pDataIn);
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///Executes a POST Request (non blocking)
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/**
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Executes a POST request on the URI uri
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@param uri : URI on which to execute the request
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@param dataOut : a HTTPData instance that contains the data that will be posted
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@param pDataIn : pointer to an HTTPData instance that will collect the data returned by the request, can be NULL
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@param pMethod : callback function
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The function returns immediately and calls the previously set callback on completion or error
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*/
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void doPost(const char* uri, const HTTPData& dataOut, HTTPData* pDataIn);
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///Setups the result callback
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/**
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@param pMethod : callback function
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*/
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void setOnResult( void (*pMethod)(HTTPResult) );
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///Setups the result callback
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/**
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@param pItem : instance of class on which to execute the callback method
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@param pMethod : callback method
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*/
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class CDummy;
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template<class T>
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void setOnResult( T* pItem, void (T::*pMethod)(HTTPResult) )
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{
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m_pCb = NULL;
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m_pCbItem = (CDummy*) pItem;
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m_pCbMeth = (void (CDummy::*)(HTTPResult)) pMethod;
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}
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193
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194
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///Setups timeout
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195
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/**
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@param ms : time of connection inactivity in ms after which the request should timeout
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*/
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void setTimeout(int ms);
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199
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virtual void poll(); //Called by NetServices
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201
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///Gets last request's HTTP response code
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/**
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@return The HTTP response code of the last request
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*/
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int getHTTPResponseCode();
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///Sets a specific request header
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void setRequestHeader(const string& header, const string& value);
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///Gets a response header
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string& getResponseHeader(const string& header);
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///Clears request headers
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void resetRequestHeaders();
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protected:
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void resetTimeout();
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void init();
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void close();
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void setup(const char* uri, HTTPData* pDataOut, HTTPData* pDataIn); //Setup request, make DNS Req if necessary
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void connect(); //Start Connection
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225
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int tryRead(); //Read data and try to feed output
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void readData(); //Data has been read
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void writeData(); //Data has been written & buf is free
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229
|
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void onTCPSocketEvent(TCPSocketEvent e);
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231
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void onDNSReply(DNSReply r);
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void onResult(HTTPResult r); //Called when exchange completed or on failure
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233
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void onTimeout(); //Connection has timed out
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234
|
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private:
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HTTPResult blockingProcess(); //Called in blocking mode, calls Net::poll() until return code is available
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237
|
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238
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bool readHeaders(); //Called first when receiving data
|
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239
|
bool writeHeaders(); //Called to create req
|
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240
|
int readLine(char* str, int maxLen, bool* pIncomplete = NULL);
|
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|
241
|
|
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|
242
|
enum HTTP_METH
|
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|
243
|
{
|
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|
244
|
HTTP_GET,
|
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|
245
|
HTTP_POST,
|
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0:58c3d014a4e7
|
246
|
HTTP_HEAD
|
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|
247
|
};
|
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|
248
|
|
| slowness |
0:58c3d014a4e7
|
249
|
HTTP_METH m_meth;
|
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0:58c3d014a4e7
|
250
|
|
| slowness |
0:58c3d014a4e7
|
251
|
CDummy* m_pCbItem;
|
| slowness |
0:58c3d014a4e7
|
252
|
void (CDummy::*m_pCbMeth)(HTTPResult);
|
| slowness |
0:58c3d014a4e7
|
253
|
|
| slowness |
0:58c3d014a4e7
|
254
|
void (*m_pCb)(HTTPResult);
|
| slowness |
0:58c3d014a4e7
|
255
|
|
| slowness |
0:58c3d014a4e7
|
256
|
TCPSocket* m_pTCPSocket;
|
| slowness |
0:58c3d014a4e7
|
257
|
map<string, string> m_reqHeaders;
|
| slowness |
0:58c3d014a4e7
|
258
|
map<string, string> m_respHeaders;
|
| slowness |
0:58c3d014a4e7
|
259
|
|
| slowness |
0:58c3d014a4e7
|
260
|
Timer m_watchdog;
|
| slowness |
0:58c3d014a4e7
|
261
|
int m_timeout;
|
| slowness |
0:58c3d014a4e7
|
262
|
|
| slowness |
0:58c3d014a4e7
|
263
|
DNSRequest* m_pDnsReq;
|
| slowness |
0:58c3d014a4e7
|
264
|
|
| slowness |
0:58c3d014a4e7
|
265
|
Host m_server;
|
| slowness |
0:58c3d014a4e7
|
266
|
string m_path;
|
| slowness |
0:58c3d014a4e7
|
267
|
|
| slowness |
0:58c3d014a4e7
|
268
|
bool m_closed;
|
| slowness |
0:58c3d014a4e7
|
269
|
|
| slowness |
0:58c3d014a4e7
|
270
|
enum HTTPStep
|
| slowness |
0:58c3d014a4e7
|
271
|
{
|
| slowness |
0:58c3d014a4e7
|
272
|
// HTTP_INIT,
|
| slowness |
0:58c3d014a4e7
|
273
|
HTTP_WRITE_HEADERS,
|
| slowness |
0:58c3d014a4e7
|
274
|
HTTP_WRITE_DATA,
|
| slowness |
0:58c3d014a4e7
|
275
|
HTTP_READ_HEADERS,
|
| slowness |
0:58c3d014a4e7
|
276
|
HTTP_READ_DATA,
|
| slowness |
0:58c3d014a4e7
|
277
|
HTTP_READ_DATA_INCOMPLETE,
|
| slowness |
0:58c3d014a4e7
|
278
|
HTTP_DONE,
|
| slowness |
0:58c3d014a4e7
|
279
|
HTTP_CLOSED
|
| slowness |
0:58c3d014a4e7
|
280
|
};
|
| slowness |
0:58c3d014a4e7
|
281
|
|
| slowness |
0:58c3d014a4e7
|
282
|
HTTPStep m_state;
|
| slowness |
0:58c3d014a4e7
|
283
|
|
| slowness |
0:58c3d014a4e7
|
284
|
HTTPData* m_pDataOut;
|
| slowness |
0:58c3d014a4e7
|
285
|
HTTPData* m_pDataIn;
|
| slowness |
0:58c3d014a4e7
|
286
|
|
| slowness |
0:58c3d014a4e7
|
287
|
bool m_dataChunked; //Data is encoded as chunks
|
| slowness |
0:58c3d014a4e7
|
288
|
int m_dataPos; //Position in data
|
| slowness |
0:58c3d014a4e7
|
289
|
int m_dataLen; //Data length
|
| slowness |
0:58c3d014a4e7
|
290
|
char* m_buf;
|
| slowness |
0:58c3d014a4e7
|
291
|
char* m_pBufRemaining; //Remaining
|
| slowness |
0:58c3d014a4e7
|
292
|
int m_bufRemainingLen; //Data length in m_pBufRemaining
|
| slowness |
0:58c3d014a4e7
|
293
|
|
| slowness |
0:58c3d014a4e7
|
294
|
int m_httpResponseCode;
|
| slowness |
0:58c3d014a4e7
|
295
|
|
| slowness |
0:58c3d014a4e7
|
296
|
HTTPResult m_blockingResult; //Result if blocking mode
|
| slowness |
0:58c3d014a4e7
|
297
|
|
| slowness |
0:58c3d014a4e7
|
298
|
};
|
| slowness |
0:58c3d014a4e7
|
299
|
|
| slowness |
0:58c3d014a4e7
|
300
|
//Including data containers here for more convenience
|
| slowness |
0:58c3d014a4e7
|
301
|
#include "data/HTTPFile.h"
|
| slowness |
0:58c3d014a4e7
|
302
|
#include "data/HTTPStream.h"
|
| slowness |
0:58c3d014a4e7
|
303
|
#include "data/HTTPText.h"
|
| slowness |
0:58c3d014a4e7
|
304
|
#include "data/HTTPMap.h"
|
| slowness |
0:58c3d014a4e7
|
305
|
|
| slowness |
0:58c3d014a4e7
|
306
|
#endif
|
bruno LARNAUDIE