| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtNetwork module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
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| ** packaging of this file. Please review the following information to |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qnetworkaccessdebugpipebackend_p.h" |
| #include "QtCore/qdatastream.h" |
| #include <QCoreApplication> |
| #include <QStringList> |
| #include <QUrlQuery> |
| #include "private/qnoncontiguousbytedevice_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| #ifdef QT_BUILD_INTERNAL |
| |
| enum { |
| ReadBufferSize = 16384, |
| WriteBufferSize = ReadBufferSize |
| }; |
| |
| QStringList QNetworkAccessDebugPipeBackendFactory::supportedSchemes() const |
| { |
| return QStringList(QStringLiteral("debugpipe")); |
| } |
| |
| QNetworkAccessBackend * |
| QNetworkAccessDebugPipeBackendFactory::create(QNetworkAccessManager::Operation op, |
| const QNetworkRequest &request) const |
| { |
| // is it an operation we know of? |
| switch (op) { |
| case QNetworkAccessManager::GetOperation: |
| case QNetworkAccessManager::PutOperation: |
| break; |
| |
| default: |
| // no, we can't handle this operation |
| return 0; |
| } |
| |
| QUrl url = request.url(); |
| if (url.scheme() == QLatin1String("debugpipe")) |
| return new QNetworkAccessDebugPipeBackend; |
| return 0; |
| } |
| |
| QNetworkAccessDebugPipeBackend::QNetworkAccessDebugPipeBackend() |
| : bareProtocol(false), hasUploadFinished(false), hasDownloadFinished(false), |
| hasEverythingFinished(false), bytesDownloaded(0), bytesUploaded(0) |
| { |
| } |
| |
| QNetworkAccessDebugPipeBackend::~QNetworkAccessDebugPipeBackend() |
| { |
| // this is signals disconnect, not network! |
| socket.disconnect(this); // we're not interested in the signals at this point |
| } |
| |
| void QNetworkAccessDebugPipeBackend::open() |
| { |
| socket.connectToHost(url().host(), url().port(12345)); |
| socket.setReadBufferSize(ReadBufferSize); |
| |
| // socket ready read -> we can push from socket to downstream |
| connect(&socket, SIGNAL(readyRead()), SLOT(socketReadyRead())); |
| connect(&socket, SIGNAL(error(QAbstractSocket::SocketError)), SLOT(socketError())); |
| connect(&socket, SIGNAL(disconnected()), SLOT(socketDisconnected())); |
| connect(&socket, SIGNAL(connected()), SLOT(socketConnected())); |
| // socket bytes written -> we can push more from upstream to socket |
| connect(&socket, SIGNAL(bytesWritten(qint64)), SLOT(socketBytesWritten(qint64))); |
| |
| bareProtocol = QUrlQuery(url()).queryItemValue(QLatin1String("bare")) == QLatin1String("1"); |
| |
| if (operation() == QNetworkAccessManager::PutOperation) { |
| createUploadByteDevice(); |
| QObject::connect(uploadByteDevice.data(), SIGNAL(readyRead()), this, SLOT(uploadReadyReadSlot())); |
| QMetaObject::invokeMethod(this, "uploadReadyReadSlot", Qt::QueuedConnection); |
| } |
| } |
| |
| void QNetworkAccessDebugPipeBackend::socketReadyRead() |
| { |
| pushFromSocketToDownstream(); |
| } |
| |
| void QNetworkAccessDebugPipeBackend::downstreamReadyWrite() |
| { |
| pushFromSocketToDownstream(); |
| } |
| |
| void QNetworkAccessDebugPipeBackend::socketBytesWritten(qint64) |
| { |
| pushFromUpstreamToSocket(); |
| } |
| |
| void QNetworkAccessDebugPipeBackend::uploadReadyReadSlot() |
| { |
| pushFromUpstreamToSocket(); |
| } |
| |
| void QNetworkAccessDebugPipeBackend::pushFromSocketToDownstream() |
| { |
| QByteArray buffer; |
| |
| if (socket.state() == QAbstractSocket::ConnectingState) { |
| return; |
| } |
| |
| forever { |
| if (hasDownloadFinished) |
| return; |
| |
| buffer.resize(ReadBufferSize); |
| qint64 haveRead = socket.read(buffer.data(), ReadBufferSize); |
| |
| if (haveRead == -1) { |
| hasDownloadFinished = true; |
| // this ensures a good last downloadProgress is emitted |
| setHeader(QNetworkRequest::ContentLengthHeader, QVariant()); |
| possiblyFinish(); |
| break; |
| } else if (haveRead == 0) { |
| break; |
| } else { |
| // have read something |
| buffer.resize(haveRead); |
| bytesDownloaded += haveRead; |
| |
| QByteDataBuffer list; |
| list.append(buffer); |
| buffer.clear(); // important because of implicit sharing! |
| writeDownstreamData(list); |
| } |
| } |
| } |
| |
| void QNetworkAccessDebugPipeBackend::pushFromUpstreamToSocket() |
| { |
| // FIXME |
| if (operation() == QNetworkAccessManager::PutOperation) { |
| if (hasUploadFinished) |
| return; |
| |
| forever { |
| if (socket.bytesToWrite() >= WriteBufferSize) |
| return; |
| |
| qint64 haveRead; |
| const char *readPointer = uploadByteDevice->readPointer(WriteBufferSize, haveRead); |
| if (haveRead == -1) { |
| // EOF |
| hasUploadFinished = true; |
| emitReplyUploadProgress(bytesUploaded, bytesUploaded); |
| possiblyFinish(); |
| break; |
| } else if (haveRead == 0 || readPointer == 0) { |
| // nothing to read right now, we will be called again later |
| break; |
| } else { |
| qint64 haveWritten; |
| haveWritten = socket.write(readPointer, haveRead); |
| |
| if (haveWritten < 0) { |
| // write error! |
| QString msg = QCoreApplication::translate("QNetworkAccessDebugPipeBackend", "Write error writing to %1: %2") |
| .arg(url().toString(), socket.errorString()); |
| error(QNetworkReply::ProtocolFailure, msg); |
| finished(); |
| return; |
| } else { |
| uploadByteDevice->advanceReadPointer(haveWritten); |
| bytesUploaded += haveWritten; |
| emitReplyUploadProgress(bytesUploaded, -1); |
| } |
| |
| //QCoreApplication::processEvents(); |
| |
| } |
| } |
| } |
| } |
| |
| void QNetworkAccessDebugPipeBackend::possiblyFinish() |
| { |
| if (hasEverythingFinished) |
| return; |
| hasEverythingFinished = true; |
| |
| if ((operation() == QNetworkAccessManager::GetOperation) && hasDownloadFinished) { |
| socket.close(); |
| finished(); |
| } else if ((operation() == QNetworkAccessManager::PutOperation) && hasUploadFinished) { |
| socket.close(); |
| finished(); |
| } |
| |
| |
| } |
| |
| void QNetworkAccessDebugPipeBackend::closeDownstreamChannel() |
| { |
| qWarning("QNetworkAccessDebugPipeBackend::closeDownstreamChannel() %d",operation());; |
| //if (operation() == QNetworkAccessManager::GetOperation) |
| // socket.disconnectFromHost(); |
| } |
| |
| |
| void QNetworkAccessDebugPipeBackend::socketError() |
| { |
| qWarning("QNetworkAccessDebugPipeBackend::socketError() %d",socket.error()); |
| QNetworkReply::NetworkError code; |
| switch (socket.error()) { |
| case QAbstractSocket::RemoteHostClosedError: |
| return; // socketDisconnected will be called |
| |
| case QAbstractSocket::NetworkError: |
| code = QNetworkReply::UnknownNetworkError; |
| break; |
| |
| default: |
| code = QNetworkReply::ProtocolFailure; |
| break; |
| } |
| |
| error(code, QNetworkAccessDebugPipeBackend::tr("Socket error on %1: %2") |
| .arg(url().toString(), socket.errorString())); |
| finished(); |
| disconnect(&socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected())); |
| |
| } |
| |
| void QNetworkAccessDebugPipeBackend::socketDisconnected() |
| { |
| pushFromSocketToDownstream(); |
| |
| if (socket.bytesToWrite() == 0) { |
| // normal close |
| } else { |
| // abnormal close |
| QString msg = QNetworkAccessDebugPipeBackend::tr("Remote host closed the connection prematurely on %1") |
| .arg(url().toString()); |
| error(QNetworkReply::RemoteHostClosedError, msg); |
| finished(); |
| } |
| } |
| |
| void QNetworkAccessDebugPipeBackend::socketConnected() |
| { |
| } |
| |
| |
| #endif |
| |
| QT_END_NAMESPACE |