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111 lines
3.1 KiB
111 lines
3.1 KiB
/* |
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* ZeroTier One - Network Virtualization Everywhere |
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* Copyright (C) 2011-2015 ZeroTier, Inc. |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* -- |
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* |
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* ZeroTier may be used and distributed under the terms of the GPLv3, which |
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html |
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* |
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* If you would like to embed ZeroTier into a commercial application or |
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* redistribute it in a modified binary form, please contact ZeroTier Networks |
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* LLC. Start here: http://www.zerotier.com/ |
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*/ |
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#ifndef ZT_HTTPCLIENT_HPP |
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#define ZT_HTTPCLIENT_HPP |
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#include <string> |
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#include <map> |
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#include <set> |
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#include "Constants.hpp" |
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#include "Mutex.hpp" |
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namespace ZeroTier { |
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class HttpClient_Private_Request; |
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/** |
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* HTTP client that does queries in the background |
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* |
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* The handler method takes the following arguments: an arbitrary pointer, an |
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* HTTP response code, the URL queried, whether or not the message body was |
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* stored on disk, and the message body. |
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* |
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* If stored on disk, the body string contains the path and the file must be |
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* moved or deleted by the receiver when it's done. If an error occurs, the |
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* response code will be negative and the body will be the error message. |
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* |
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* All headers in the returned headers map will have their header names |
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* converted to lower case, e.g. "content-type". |
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* |
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* Currently only the "http" transport is guaranteed to be supported on all |
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* platforms. |
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*/ |
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class HttpClient |
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{ |
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public: |
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friend class HttpClient_Private_Request; |
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typedef void * Request; |
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HttpClient(); |
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~HttpClient(); |
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/** |
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* Empty map for convenience use |
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*/ |
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static const std::map<std::string,std::string> NO_HEADERS; |
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/** |
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* Request a URL using the GET method |
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*/ |
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inline Request GET( |
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const std::string &url, |
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const std::map<std::string,std::string> &headers, |
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unsigned int timeout, |
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void (*handler)(void *,int,const std::string &,const std::string &), |
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void *arg) |
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{ |
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return _do("GET",url,headers,timeout,handler,arg); |
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} |
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/** |
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* Cancel a request |
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* |
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* If the request is not active, this does nothing. This may take some time |
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* depending on HTTP implementation. It may also not kill instantly, but |
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* it will prevent the handler function from ever being called and cause the |
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* request to die silently when complete. |
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*/ |
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void cancel(Request req); |
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private: |
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Request _do( |
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const char *method, |
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const std::string &url, |
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const std::map<std::string,std::string> &headers, |
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unsigned int timeout, |
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void (*handler)(void *,int,const std::string &,const std::string &), |
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void *arg); |
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std::set<Request> _requests; |
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Mutex _requests_m; |
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}; |
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} // namespace ZeroTier |
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#endif
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