pion-net  4.0.9
net/include/pion/net/HTTPResponseReader.hpp
00001 // ------------------------------------------------------------------
00002 // pion-net: a C++ framework for building lightweight HTTP interfaces
00003 // ------------------------------------------------------------------
00004 // Copyright (C) 2007-2008 Atomic Labs, Inc.  (http://www.atomiclabs.com)
00005 //
00006 // Distributed under the Boost Software License, Version 1.0.
00007 // See http://www.boost.org/LICENSE_1_0.txt
00008 //
00009 
00010 #ifndef __PION_HTTPRESPONSEREADER_HEADER__
00011 #define __PION_HTTPRESPONSEREADER_HEADER__
00012 
00013 #include <boost/asio.hpp>
00014 #include <boost/bind.hpp>
00015 #include <boost/function.hpp>
00016 #include <boost/function/function2.hpp>
00017 #include <boost/shared_ptr.hpp>
00018 #include <boost/enable_shared_from_this.hpp>
00019 #include <pion/PionConfig.hpp>
00020 #include <pion/net/HTTPResponse.hpp>
00021 #include <pion/net/HTTPReader.hpp>
00022 
00023 
00024 namespace pion {    // begin namespace pion
00025 namespace net {     // begin namespace net (Pion Network Library)
00026 
00027 
00031 class HTTPResponseReader :
00032     public HTTPReader,
00033     public boost::enable_shared_from_this<HTTPResponseReader>
00034 {
00035 
00036 public:
00037 
00039     typedef boost::function3<void, HTTPResponsePtr, TCPConnectionPtr,
00040         const boost::system::error_code&>   FinishedHandler;
00041 
00042     
00043     // default destructor
00044     virtual ~HTTPResponseReader() {}
00045     
00053     static inline boost::shared_ptr<HTTPResponseReader>
00054         create(TCPConnectionPtr& tcp_conn, const HTTPRequest& http_request,
00055                FinishedHandler handler)
00056     {
00057         return boost::shared_ptr<HTTPResponseReader>
00058             (new HTTPResponseReader(tcp_conn, http_request, handler));
00059     }
00060 
00061     
00062 protected:
00063 
00071     HTTPResponseReader(TCPConnectionPtr& tcp_conn, const HTTPRequest& http_request,
00072                        FinishedHandler handler)
00073         : HTTPReader(false, tcp_conn), m_http_msg(new HTTPResponse(http_request)),
00074         m_finished(handler)
00075     {
00076         m_http_msg->setRemoteIp(tcp_conn->getRemoteIp());
00077         setLogger(PION_GET_LOGGER("pion.net.HTTPResponseReader"));
00078     }
00079         
00081     virtual void readBytes(void) {
00082         getTCPConnection()->async_read_some(boost::bind(&HTTPResponseReader::consumeBytes,
00083                                                         shared_from_this(),
00084                                                         boost::asio::placeholders::error,
00085                                                         boost::asio::placeholders::bytes_transferred));
00086     }
00087 
00089     virtual void finishedReading(const boost::system::error_code& ec) {
00090         // call the finished handler with the finished HTTP message
00091         if (m_finished) m_finished(m_http_msg, getTCPConnection(), ec);
00092     }
00093     
00095     virtual HTTPMessage& getMessage(void) { return *m_http_msg; }
00096 
00097     
00099     HTTPResponsePtr             m_http_msg;
00100 
00102     FinishedHandler             m_finished;
00103 };
00104 
00105 
00107 typedef boost::shared_ptr<HTTPResponseReader>   HTTPResponseReaderPtr;
00108 
00109 
00110 }   // end namespace net
00111 }   // end namespace pion
00112 
00113 #endif