mirror of
https://github.com/zerotier/ZeroTierOne.git
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112 lines
3.1 KiB
C++
112 lines
3.1 KiB
C++
/*
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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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