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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 "SocketCore.h"
#include "prefs.h"
#include "Option.h"
#include "HttpResponse.h"
#include "HttpHeader.h"
#include "Range.h"
#include "DownloadContext.h"
#include "Logger.h"
#include "StreamFilter.h"
#include "SinkStreamFilter.h"
#include "util.h"
#include "SocketRecvBuffer.h"
namespace aria2 {
HttpDownloadCommand::HttpDownloadCommand(
cuid_t cuid, const std::shared_ptr<Request>& req,
const std::shared_ptr<FileEntry>& fileEntry, RequestGroup* requestGroup,
std::unique_ptr<HttpResponse> httpResponse,
const std::shared_ptr<HttpConnection>& httpConnection, DownloadEngine* e,
const std::shared_ptr<SocketCore>& socket)
: DownloadCommand(cuid, req, fileEntry, requestGroup, e, socket,
httpConnection->getSocketRecvBuffer()),
httpResponse_(std::move(httpResponse)),
httpConnection_(httpConnection)
{
}
HttpDownloadCommand::~HttpDownloadCommand() {}
bool HttpDownloadCommand::prepareForNextSegment()
{
bool downloadFinished = getRequestGroup()->downloadFinished();
if (getRequest()->isPipeliningEnabled() && !downloadFinished) {
auto command = make_unique<HttpRequestCommand>(
getCuid(), getRequest(), getFileEntry(), getRequestGroup(),
httpConnection_, getDownloadEngine(), getSocket());
// Set proxy request here. aria2 sends the HTTP request specialized for
// proxy.
if (resolveProxyMethod(getRequest()->getProtocol()) == V_GET) {
command->setProxyRequest(createProxyRequest());
}
getDownloadEngine()->addCommand(std::move(command));
return true;
}
const std::string& streamFilterName = getStreamFilter()->getName();
if (getRequest()->isPipeliningEnabled() ||
(getRequest()->isKeepAliveEnabled() &&
(
// Make sure that all filters are finished to pool socket
(!util::endsWith(streamFilterName, SinkStreamFilter::NAME) &&
getStreamFilter()->finished()) ||
getRequestEndOffset() ==
getFileEntry()->gtoloff(
getSegments().front()->getPositionToWrite())))) {
// TODO What if server sends EOF when non-SinkStreamFilter 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.
getDownloadEngine()->poolSocket(getRequest(), createProxyRequest(),
getSocket());
}
// 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 (!getRequest()->isPipeliningEnabled() &&
getRequest()->isPipeliningHint() && !downloadFinished) {
const std::shared_ptr<Segment>& segment = getSegments().front();
int64_t lastOffset = getFileEntry()->gtoloff(
std::min(segment->getPosition() + segment->getLength(),
getFileEntry()->getLastOffset()));
auto range = httpResponse_->getHttpHeader()->getRange();
if (lastOffset == range.endByte + 1) {
return prepareForRetry(0);
}
}
return DownloadCommand::prepareForNextSegment();
}
int64_t HttpDownloadCommand::getRequestEndOffset() const
{
auto endByte = httpResponse_->getHttpHeader()->getRange().endByte;
if (endByte > 0) {
return endByte + 1;
}
return endByte;
}
} // namespace aria2
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