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//
// HTTPClientSession.cpp
//
// Library: Net
// Package: HTTPClient
// Module: HTTPClientSession
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#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/HTTPBasicCredentials.h"
#include "Poco/Net/NetException.h"
#include "Poco/NumberFormatter.h"
#include "Poco/CountingStream.h"
#include "Poco/RegularExpression.h"
#include <sstream>
using Poco::NumberFormatter;
using Poco::IllegalStateException;
namespace Poco {
namespace Net {
HTTPClientSession::ProxyConfig HTTPClientSession::_globalProxyConfig;
HTTPClientSession::HTTPClientSession():
_port(HTTPSession::HTTP_PORT),
_proxyConfig(_globalProxyConfig),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_responseReceived(false)
{
}
HTTPClientSession::HTTPClientSession(const StreamSocket& socket):
HTTPSession(socket),
_port(HTTPSession::HTTP_PORT),
_proxyConfig(_globalProxyConfig),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_responseReceived(false)
{
}
HTTPClientSession::HTTPClientSession(const SocketAddress& address):
_host(address.host().toString()),
_port(address.port()),
_proxyConfig(_globalProxyConfig),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_responseReceived(false)
{
}
HTTPClientSession::HTTPClientSession(const std::string& host, Poco::UInt16 port):
_host(host),
_port(port),
_proxyConfig(_globalProxyConfig),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_responseReceived(false)
{
}
HTTPClientSession::HTTPClientSession(const std::string& host, Poco::UInt16 port, const ProxyConfig& proxyConfig):
_host(host),
_port(port),
_proxyConfig(proxyConfig),
_keepAliveTimeout(DEFAULT_KEEP_ALIVE_TIMEOUT, 0),
_reconnect(false),
_mustReconnect(false),
_expectResponseBody(false),
_responseReceived(false)
{
}
HTTPClientSession::~HTTPClientSession()
{
}
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())
{
_proxyConfig.host = host;
_proxyConfig.port = 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())
_proxyConfig.host = host;
else
throw IllegalStateException("Cannot set the proxy host for an already connected session");
}
void HTTPClientSession::setProxyPort(Poco::UInt16 port)
{
if (!connected())
_proxyConfig.port = 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)
{
_proxyConfig.username = username;
_proxyConfig.password = password;
}
void HTTPClientSession::setProxyUsername(const std::string& username)
{
_proxyConfig.username = username;
}
void HTTPClientSession::setProxyPassword(const std::string& password)
{
_proxyConfig.password = password;
}
void HTTPClientSession::setProxyConfig(const ProxyConfig& config)
{
_proxyConfig = config;
}
void HTTPClientSession::setGlobalProxyConfig(const ProxyConfig& config)
{
_globalProxyConfig = config;
}
void HTTPClientSession::setKeepAliveTimeout(const Poco::Timespan& timeout)
{
_keepAliveTimeout = timeout;
}
std::ostream& HTTPClientSession::sendRequest(HTTPRequest& request)
{
_pRequestStream = 0;
_pResponseStream = 0;
clearException();
_responseReceived = false;
bool keepAlive = getKeepAlive();
if (((connected() && !keepAlive) || mustReconnect()) && !_host.empty())
{
close();
_mustReconnect = false;
}
try
{
if (!connected())
reconnect();
if (!keepAlive)
request.setKeepAlive(false);
if (!request.has(HTTPRequest::HOST) && !_host.empty())
request.setHost(_host, _port);
if (!_proxyConfig.host.empty() && !bypassProxy())
{
request.setURI(proxyRequestPrefix() + request.getURI());
proxyAuthenticate(request);
}
_reconnect = keepAlive;
_expectResponseBody = request.getMethod() != HTTPRequest::HTTP_HEAD;
const std::string& method = request.getMethod();
if (request.getChunkedTransferEncoding())
{
HTTPHeaderOutputStream hos(*this);
request.write(hos);
_pRequestStream = new HTTPChunkedOutputStream(*this);
}
else if (request.hasContentLength())
{
Poco::CountingOutputStream cs;
request.write(cs);
#if POCO_HAVE_INT64
_pRequestStream = new HTTPFixedLengthOutputStream(*this, request.getContentLength64() + cs.chars());
#else
_pRequestStream = new HTTPFixedLengthOutputStream(*this, request.getContentLength() + cs.chars());
#endif
request.write(*_pRequestStream);
}
else if ((method != HTTPRequest::HTTP_PUT && method != HTTPRequest::HTTP_POST && method != HTTPRequest::HTTP_PATCH) || request.has(HTTPRequest::UPGRADE))
{
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;
}
}
void HTTPClientSession::flushRequest()
{
_pRequestStream = 0;
if (networkException()) networkException()->rethrow();
}
std::istream& HTTPClientSession::receiveResponse(HTTPResponse& response)
{
flushRequest();
if (!_responseReceived)
{
do
{
response.clear();
HTTPHeaderInputStream his(*this);
try
{
response.read(his);
}
catch (Exception&)
{
close();
if (networkException())
networkException()->rethrow();
else
throw;
throw;
}
}
while (response.getStatus() == HTTPResponse::HTTP_CONTINUE);
}
_mustReconnect = getKeepAlive() && !response.getKeepAlive();
if (!_expectResponseBody || response.getStatus() < 200 || response.getStatus() == HTTPResponse::HTTP_NO_CONTENT || response.getStatus() == HTTPResponse::HTTP_NOT_MODIFIED)
_pResponseStream = new HTTPFixedLengthInputStream(*this, 0);
else if (response.getChunkedTransferEncoding())
_pResponseStream = new HTTPChunkedInputStream(*this);
else if (response.hasContentLength())
#if defined(POCO_HAVE_INT64)
_pResponseStream = new HTTPFixedLengthInputStream(*this, response.getContentLength64());
#else
_pResponseStream = new HTTPFixedLengthInputStream(*this, response.getContentLength());
#endif
else
_pResponseStream = new HTTPInputStream(*this);
return *_pResponseStream;
}
bool HTTPClientSession::peekResponse(HTTPResponse& response)
{
poco_assert (!_responseReceived);
_pRequestStream->flush();
if (networkException()) networkException()->rethrow();
response.clear();
HTTPHeaderInputStream his(*this);
try
{
response.read(his);
}
catch (Exception&)
{
close();
if (networkException())
networkException()->rethrow();
else
throw;
throw;
}
_responseReceived = response.getStatus() != HTTPResponse::HTTP_CONTINUE;
return !_responseReceived;
}
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 (IOException&)
{
if (_reconnect)
{
close();
reconnect();
int rc = HTTPSession::write(buffer, length);
clearException();
_reconnect = false;
return rc;
}
else throw;
}
}
void HTTPClientSession::reconnect()
{
if (_proxyConfig.host.empty() || bypassProxy())
{
SocketAddress addr(_host, _port);
connect(addr);
}
else
{
SocketAddress addr(_proxyConfig.host, _proxyConfig.port);
connect(addr);
}
}
std::string HTTPClientSession::proxyRequestPrefix() const
{
std::string result("http://");
result.append(_host);
result.append(":");
NumberFormatter::append(result, _port);
return result;
}
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 (!_proxyConfig.username.empty())
{
HTTPBasicCredentials creds(_proxyConfig.username, _proxyConfig.password);
creds.proxyAuthenticate(request);
}
}
StreamSocket HTTPClientSession::proxyConnect()
{
ProxyConfig emptyProxyConfig;
HTTPClientSession proxySession(getProxyHost(), getProxyPort(), emptyProxyConfig);
proxySession.setTimeout(getTimeout());
std::string targetAddress(_host);
targetAddress.append(":");
NumberFormatter::append(targetAddress, _port);
HTTPRequest proxyRequest(HTTPRequest::HTTP_CONNECT, targetAddress, HTTPMessage::HTTP_1_1);
HTTPResponse proxyResponse;
proxyRequest.set("Proxy-Connection", "keep-alive");
proxyRequest.set("Host", getHost());
proxyAuthenticateImpl(proxyRequest);
proxySession.setKeepAlive(true);
proxySession.sendRequest(proxyRequest);
proxySession.receiveResponse(proxyResponse);
if (proxyResponse.getStatus() != HTTPResponse::HTTP_OK)
throw HTTPException("Cannot establish proxy connection", proxyResponse.getReason());
return proxySession.detachSocket();
}
void HTTPClientSession::proxyTunnel()
{
StreamSocket ss = proxyConnect();
attachSocket(ss);
}
bool HTTPClientSession::bypassProxy() const
{
if (!_proxyConfig.nonProxyHosts.empty())
{
return RegularExpression::match(_host, _proxyConfig.nonProxyHosts, RegularExpression::RE_CASELESS | RegularExpression::RE_ANCHORED);
}
else return false;
}
} } // namespace Poco::Net
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