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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 "HttpDownloadCommand.h"
#include "RequestGroup.h"
#include "DownloadEngine.h"
#include "Request.h"
#include "HttpRequestCommand.h"
#include "HttpConnection.h"
#include "HttpRequest.h"
#include "Segment.h"
#include "Socket.h"
#include "prefs.h"
#include "Option.h"
#include "HttpResponse.h"
#include "HttpHeader.h"
#include "Range.h"
#include "DownloadContext.h"
#include "Decoder.h"
namespace aria2 {
HttpDownloadCommand::HttpDownloadCommand
(cuid_t cuid,
const SharedHandle<Request>& req,
const SharedHandle<FileEntry>& fileEntry,
RequestGroup* requestGroup,
const SharedHandle<HttpResponse>& httpResponse,
const HttpConnectionHandle& httpConnection,
DownloadEngine* e,
const SocketHandle& socket)
:DownloadCommand(cuid, req, fileEntry, requestGroup, e, socket),
_httpResponse(httpResponse),
_httpConnection(httpConnection) {}
HttpDownloadCommand::~HttpDownloadCommand() {}
bool HttpDownloadCommand::prepareForNextSegment() {
bool downloadFinished = _requestGroup->downloadFinished();
if(req->isPipeliningEnabled() && !downloadFinished) {
HttpRequestCommand* command =
new HttpRequestCommand(cuid, req, _fileEntry,
_requestGroup, _httpConnection, e,
socket);
// Set proxy request here. aria2 sends the HTTP request specialized for
// proxy.
if(resolveProxyMethod(req->getProtocol()) == V_GET) {
command->setProxyRequest(createProxyRequest());
}
e->commands.push_back(command);
return true;
} else {
if(req->isPipeliningEnabled() ||
(req->isKeepAliveEnabled() &&
(
((!_transferEncodingDecoder.isNull() &&
_transferEncodingDecoder->finished()) ||
(!_contentEncodingDecoder.isNull() &&
_contentEncodingDecoder->finished())) ||
_fileEntry->getLastOffset() ==
_segments.front()->getPositionToWrite()
)
)
) {
// TODO What if server sends EOF when _contentEncodingDecoder is
// used and server didn't send Connection: close? We end up to
// pool terminated socket. In HTTP/1.1, keep-alive is default,
// so closing connection without Connection: close header means
// that server is broken or not configured properly.
e->poolSocket(req, isProxyDefined(), socket);
}
// The request was sent assuming that server supported pipelining, but
// it turned out that server didn't support it.
// We detect this situation by comparing the end byte in range header
// of the response with the end byte of segment.
// If it is the same, HTTP negotiation is necessary for the next request.
if(!req->isPipeliningEnabled() && req->isPipeliningHint() &&
!downloadFinished) {
const SharedHandle<Segment>& segment = _segments.front();
off_t lastOffset =_fileEntry->gtoloff
(std::min(static_cast<off_t>(segment->getPosition()+segment->getLength()),
_fileEntry->getLastOffset()));
if(lastOffset ==
_httpResponse->getHttpHeader()->getRange()->getEndByte()+1) {
return prepareForRetry(0);
}
}
return DownloadCommand::prepareForNextSegment();
}
}
} // namespace aria2
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