webservice.h

00001 /*
00002 * WebService library
00003 * Copyright (c) 2010 Hendrik Lipka
00004 * 
00005 * Permission is hereby granted, free of charge, to any person obtaining a copy
00006 * of this software and associated documentation files (the "Software"), to deal
00007 * in the Software without restriction, including without limitation the rights
00008 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 * copies of the Software, and to permit persons to whom the Software is
00010 * furnished to do so, subject to the following conditions:
00011 * 
00012 * The above copyright notice and this permission notice shall be included in
00013 * all copies or substantial portions of the Software.
00014 * 
00015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 * THE SOFTWARE.
00022 */
00023 
00024 #ifndef __WEBSERVICE_H__
00025 #define __WEBSERVICE_H__
00026 
00027 #include "spdomparser.hpp"
00028 
00029 #include "url.h"
00030 
00031 #include "tcplinestream.h"
00032 
00033 /**
00034 A simple web service over HTTP library. Calls a HTTP server via GET, and returns the response wrapped in a XML parser. All calls are synchronous.
00035 Needs the NetServicesMin and DNSResolver library
00036 The code for URL handling has been copied directly from the original NetServices library (Thanks to Donatien!).
00037 
00038 */
00039 class WebService
00040 {
00041     public:
00042         /**
00043             create the web service instance.
00044             @params urlStr the URL to call via GET
00045         */
00046         WebService(const char* urlStr);
00047         /**
00048             Execute the web service call. Note that the caller is responsible for freeing the return parser instance.
00049             @return the XML parser, or NULL if an error occured
00050         */
00051         SP_XmlDomParser *callService();
00052         /**
00053             close all resources
00054         */
00055         ~WebService(){close();};
00056         /**
00057             close all resources
00058         */
00059         void close();
00060         
00061     private:
00062         void init();
00063         
00064         string _request;
00065         
00066         TCPLineStream *_stream;
00067 };
00068 
00069 
00070 
00071 #endif