2 * \file HTTPClient.hxx - simple HTTP client engine for SimHear
5 // Written by James Turner
7 // Copyright (C) 2013 James Turner <zakalawe@mac.com>
9 // This library is free software; you can redistribute it and/or
10 // modify it under the terms of the GNU Library General Public
11 // License as published by the Free Software Foundation; either
12 // version 2 of the License, or (at your option) any later version.
14 // This library is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 // Library General Public License for more details.
19 // You should have received a copy of the GNU General Public License
20 // along with this program; if not, write to the Free Software
21 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24 #ifndef SG_HTTP_CLIENT_HXX
25 #define SG_HTTP_CLIENT_HXX
27 #include <memory> // for std::auto_ptr
28 #include <stdint.h> // for uint_64t
30 #include <simgear/io/HTTPFileRequest.hxx>
31 #include <simgear/io/HTTPMemoryRequest.hxx>
48 void update(int waitTimeout = 0);
50 void makeRequest(const Request_ptr& r);
53 * Download a resource and save it to a file.
55 * @param url The resource to download
56 * @param filename Path to the target file
57 * @param data Data for POST request
59 FileRequestRef save( const std::string& url,
60 const std::string& filename );
63 * Request a resource and keep it in memory.
65 * @param url The resource to download
67 MemoryRequestRef load(const std::string& url);
69 void setUserAgent(const std::string& ua);
70 void setProxy(const std::string& proxy, int port, const std::string& auth = "");
73 * Specify the maximum permitted simultaneous connections
74 * (default value is 1)
76 void setMaxConnections(unsigned int maxCons);
78 void setMaxHostConnections(unsigned int maxHostConns);
81 * maximum depth to pipeline requests - set to 0 to disable pipelining
83 void setMaxPipelineDepth(unsigned int depth);
85 const std::string& userAgent() const;
87 const std::string& proxyHost() const;
89 const std::string& proxyAuth() const;
92 * predicate, check if at least one connection is active, with at
93 * least one request active or queued.
95 bool hasActiveRequests() const;
98 * crude tracking of bytes-per-second transferred over the socket.
99 * suitable for user feedback and rough profiling, nothing more.
101 unsigned int transferRateBytesPerSec() const;
104 * total bytes downloaded by this HTTP client, for bandwidth usage
107 uint64_t totalBytesDownloaded() const;
109 void debugDumpRequests();
111 void clearAllConnections();
114 static size_t requestWriteCallback(char *ptr, size_t size, size_t nmemb, void *userdata);
115 static size_t requestReadCallback(char *ptr, size_t size, size_t nmemb, void *userdata);
116 static size_t requestHeaderCallback(char *buffer, size_t size, size_t nitems, void *userdata);
118 void requestFinished(Connection* con);
120 void receivedBytes(unsigned int count);
122 friend class Connection;
123 friend class Request;
126 std::auto_ptr<ClientPrivate> d;
129 } // of namespace HTTP
131 } // of namespace simgear
133 #endif // of SG_HTTP_CLIENT_HXX