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418 lines (349 loc) · 9.33 KB
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//
// HTTPClientSession.cpp
//
// $Id: //poco/Main/Net/src/HTTPClientSession.cpp#22 $
//
// Library: Net
// Package: HTTPClient
// Module: HTTPClientSession
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/Net/HTTPClientSession.h"
#include "Poco/Net/HTTPRequest.h"
#include "Poco/Net/HTTPResponse.h"
#include "Poco/Net/HTTPHeaderStream.h"
#include "Poco/Net/HTTPStream.h"
#include "Poco/Net/HTTPFixedLengthStream.h"
#include "Poco/Net/HTTPChunkedStream.h"
#include "Poco/Net/NetException.h"
#include "Poco/NumberFormatter.h"
#include "Poco/CountingStream.h"
#include "Poco/Base64Encoder.h"
#include <sstream>
using Poco::NumberFormatter;
using Poco::IllegalStateException;
namespace Poco {
namespace Net {
HTTPClientSession::HTTPClientSession():
_port(HTTPSession::HTTP_PORT),
_proxyPort(HTTPSession::HTTP_PORT),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_pRequestStream(0),
_pResponseStream(0)
{
}
HTTPClientSession::HTTPClientSession(const StreamSocket& socket):
HTTPSession(socket),
_port(HTTPSession::HTTP_PORT),
_proxyPort(HTTPSession::HTTP_PORT),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_pRequestStream(0),
_pResponseStream(0)
{
}
HTTPClientSession::HTTPClientSession(const SocketAddress& address):
_host(address.host().toString()),
_port(address.port()),
_proxyPort(HTTPSession::HTTP_PORT),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_pRequestStream(0),
_pResponseStream(0)
{
}
HTTPClientSession::HTTPClientSession(const std::string& host, Poco::UInt16 port):
_host(host),
_port(port),
_proxyPort(HTTPSession::HTTP_PORT),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_pRequestStream(0),
_pResponseStream(0)
{
}
HTTPClientSession::~HTTPClientSession()
{
delete _pRequestStream;
delete _pResponseStream;
}
void HTTPClientSession::setHost(const std::string& host)
{
if (!connected())
_host = host;
else
throw IllegalStateException("Cannot set the host for an already connected session");
}
void HTTPClientSession::setPort(Poco::UInt16 port)
{
if (!connected())
_port = port;
else
throw IllegalStateException("Cannot set the port number for an already connected session");
}
void HTTPClientSession::setProxy(const std::string& host, Poco::UInt16 port)
{
if (!connected())
{
_proxyHost = host;
_proxyPort = port;
}
else throw IllegalStateException("Cannot set the proxy host and port for an already connected session");
}
void HTTPClientSession::setProxyHost(const std::string& host)
{
if (!connected())
_proxyHost = host;
else
throw IllegalStateException("Cannot set the proxy host for an already connected session");
}
void HTTPClientSession::setProxyPort(Poco::UInt16 port)
{
if (!connected())
_proxyPort = port;
else
throw IllegalStateException("Cannot set the proxy port number for an already connected session");
}
void HTTPClientSession::setProxyCredentials(const std::string& username, const std::string& password)
{
_proxyUsername = username;
_proxyPassword = password;
}
void HTTPClientSession::setProxyUsername(const std::string& username)
{
_proxyUsername = username;
}
void HTTPClientSession::setProxyPassword(const std::string& password)
{
_proxyPassword = password;
}
void HTTPClientSession::setKeepAliveTimeout(const Poco::Timespan& timeout)
{
_keepAliveTimeout = timeout;
}
std::ostream& HTTPClientSession::sendRequest(HTTPRequest& request)
{
delete _pResponseStream;
_pResponseStream = 0;
bool keepAlive = getKeepAlive();
if ((connected() && !keepAlive) || mustReconnect())
{
close();
_mustReconnect = false;
}
try
{
if (!connected())
reconnect();
if (!keepAlive)
request.setKeepAlive(false);
if (!request.has(HTTPRequest::HOST))
request.setHost(_host, _port);
if (!_proxyHost.empty())
{
request.setURI(proxyRequestPrefix() + request.getURI());
proxyAuthenticate(request);
}
_reconnect = keepAlive;
_expectResponseBody = request.getMethod() != HTTPRequest::HTTP_HEAD;
if (request.getChunkedTransferEncoding())
{
HTTPHeaderOutputStream hos(*this);
request.write(hos);
_pRequestStream = new HTTPChunkedOutputStream(*this);
}
else if (request.getContentLength() != HTTPMessage::UNKNOWN_CONTENT_LENGTH)
{
Poco::CountingOutputStream cs;
request.write(cs);
_pRequestStream = new HTTPFixedLengthOutputStream(*this, request.getContentLength() + cs.chars());
request.write(*_pRequestStream);
}
else if (request.getMethod() != HTTPRequest::HTTP_PUT && request.getMethod() != HTTPRequest::HTTP_POST)
{
Poco::CountingOutputStream cs;
request.write(cs);
_pRequestStream = new HTTPFixedLengthOutputStream(*this, cs.chars());
request.write(*_pRequestStream);
}
else
{
_pRequestStream = new HTTPOutputStream(*this);
request.write(*_pRequestStream);
}
_lastRequest.update();
return *_pRequestStream;
}
catch (Exception&)
{
close();
throw;
}
}
std::istream& HTTPClientSession::receiveResponse(HTTPResponse& response)
{
delete _pRequestStream;
_pRequestStream = 0;
do
{
response.clear();
HTTPHeaderInputStream his(*this);
try
{
response.read(his);
}
catch (MessageException&)
{
close();
if (networkException())
networkException()->rethrow();
else
throw;
}
catch (Exception&)
{
close();
throw;
}
}
while (response.getStatus() == HTTPResponse::HTTP_CONTINUE);
_mustReconnect = getKeepAlive() && !response.getKeepAlive();
if (!_expectResponseBody)
_pResponseStream = new HTTPFixedLengthInputStream(*this, 0);
else if (response.getChunkedTransferEncoding())
_pResponseStream = new HTTPChunkedInputStream(*this);
else if (response.getContentLength() != HTTPMessage::UNKNOWN_CONTENT_LENGTH)
_pResponseStream = new HTTPFixedLengthInputStream(*this, response.getContentLength());
else
_pResponseStream = new HTTPInputStream(*this);
return *_pResponseStream;
}
void HTTPClientSession::reset()
{
close();
}
bool HTTPClientSession::secure() const
{
return false;
}
int HTTPClientSession::write(const char* buffer, std::streamsize length)
{
try
{
int rc = HTTPSession::write(buffer, length);
_reconnect = false;
return rc;
}
catch (NetException&)
{
if (_reconnect)
{
close();
reconnect();
int rc = HTTPSession::write(buffer, length);
_reconnect = false;
return rc;
}
else throw;
}
}
void HTTPClientSession::reconnect()
{
if (_proxyHost.empty())
{
SocketAddress addr(_host, _port);
connect(addr);
}
else
{
SocketAddress addr(_proxyHost, _proxyPort);
connect(addr);
}
}
std::string HTTPClientSession::proxyRequestPrefix() const
{
std::string result("http://");
result.append(_host);
result.append(":");
NumberFormatter::append(result, _port);
return result;
}
void HTTPClientSession::deleteResponseStream()
{
delete _pResponseStream;
_pResponseStream = 0;
}
void HTTPClientSession::deleteRequestStream()
{
delete _pRequestStream;
_pRequestStream = 0;
}
void HTTPClientSession::setResponseStream(std::istream* pRespStream)
{
poco_assert (!_pResponseStream);
_pResponseStream = pRespStream;
}
void HTTPClientSession::setRequestStream(std::ostream* pRequestStream)
{
poco_assert (!_pRequestStream);
_pRequestStream = pRequestStream;
}
bool HTTPClientSession::mustReconnect() const
{
if (!_mustReconnect)
{
Poco::Timestamp now;
return _keepAliveTimeout <= now - _lastRequest;
}
else return true;
}
void HTTPClientSession::proxyAuthenticate(HTTPRequest& request)
{
proxyAuthenticateImpl(request);
}
void HTTPClientSession::proxyAuthenticateImpl(HTTPRequest& request)
{
if (!_proxyUsername.empty())
{
std::ostringstream ostr;
ostr << "Basic ";
Base64Encoder encoder(ostr);
encoder << _proxyUsername << ":" << _proxyPassword;
encoder.close();
request.set("Proxy-Authorization", ostr.str());
}
}
} } // namespace Poco::Net