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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "HttpNullDownloadCommand.h"
#include "HttpConnection.h"
#include "HttpResponse.h"
#include "message.h"
#include "SocketCore.h"
#include "TransferEncoding.h"
#include "DlRetryEx.h"
#include "Request.h"
#include "DownloadEngine.h"
#include "Logger.h"
#include "HttpRequest.h"
#include "Segment.h"
namespace aria2 {
HttpNullDownloadCommand::HttpNullDownloadCommand
(int cuid,
const SharedHandle<Request>& req,
RequestGroup* requestGroup,
const SharedHandle<HttpConnection>& httpConnection,
const SharedHandle<HttpResponse>& httpResponse,
DownloadEngine* e,
const SharedHandle<SocketCore>& s):
AbstractCommand(cuid, req, requestGroup, e, s),
_httpConnection(httpConnection),
_httpResponse(httpResponse),
_totalLength(_httpResponse->getEntityLength()),
_receivedBytes(0)
{}
HttpNullDownloadCommand::~HttpNullDownloadCommand() {}
void HttpNullDownloadCommand::setTransferDecoder
(const SharedHandle<TransferEncoding>& transferDecoder)
{
_transferDecoder = transferDecoder;
}
bool HttpNullDownloadCommand::executeInternal()
{
const size_t BUFSIZE = 16*1024;
unsigned char buf[BUFSIZE];
size_t bufSize = BUFSIZE;
socket->readData(buf, bufSize);
if(_transferDecoder.isNull()) {
_receivedBytes += bufSize;
} else {
// _receivedBytes is not updated if transferEncoding is set.
size_t infbufSize = 16*1024;
unsigned char infbuf[infbufSize];
_transferDecoder->inflate(infbuf, infbufSize, buf, bufSize);
}
if(_totalLength != 0 && bufSize == 0) {
throw DlRetryEx(EX_GOT_EOF);
}
if(bufSize == 0) {
// Since this method is called by DownloadEngine only when the socket is
// readable, bufSize == 0 means server shutdown the connection.
// So socket cannot be reused in this case.
return prepareForRetry(0);
} else if((!_transferDecoder.isNull() && _transferDecoder->finished())
|| (_transferDecoder.isNull() && _totalLength == _receivedBytes)) {
if(!_transferDecoder.isNull()) _transferDecoder->end();
if(req->supportsPersistentConnection()) {
std::pair<std::string, uint16_t> peerInfo;
socket->getPeerInfo(peerInfo);
e->poolSocket(peerInfo.first, peerInfo.second, socket);
}
_httpResponse->processRedirect();
logger->info(MSG_REDIRECT, cuid, _httpResponse->getRedirectURI().c_str());
return prepareForRetry(0);
} else {
e->commands.push_back(this);
return false;
}
}
} // namespace aria2
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