示例#1
0
QHttpNetworkRequest QHttpNetworkConnectionPrivate::predictNextRequest()
{
    if (!highPriorityQueue.isEmpty())
        return highPriorityQueue.last().first;
    if (!lowPriorityQueue.isEmpty())
        return lowPriorityQueue.last().first;
    return QHttpNetworkRequest();
}
示例#2
0
void QHttpNetworkConnectionPrivate::emitReplyError(QAbstractSocket *socket,
                                                   QHttpNetworkReply *reply,
                                                   QNetworkReply::NetworkError errorCode)
{
    Q_Q(QHttpNetworkConnection);
    if (socket && reply) {
        // this error matters only to this reply
        reply->d_func()->errorString = errorDetail(errorCode, socket);
        emit reply->finishedWithError(errorCode, reply->d_func()->errorString);
        int i = indexOf(socket);
        // remove the corrupt data if any
        reply->d_func()->eraseData();

        // Clean the channel
        channels[i].close();
        channels[i].reply = 0;
        channels[i].request = QHttpNetworkRequest();
        channels[i].requeueCurrentlyPipelinedRequests();

        // send the next request
        QMetaObject::invokeMethod(q, "_q_startNextRequest", Qt::QueuedConnection);
    }
}
示例#3
0
void QHttpNetworkConnectionChannel::allDone()
{
    Q_ASSERT(reply);

    if (!reply) {
        qWarning() << "QHttpNetworkConnectionChannel::allDone() called without reply. Please report at http://bugreports.qt.nokia.com/";
        return;
    }

    // while handling 401 & 407, we might reset the status code, so save this.
    bool emitFinished = reply->d_func()->shouldEmitSignals();
    bool connectionCloseEnabled = reply->d_func()->isConnectionCloseEnabled();
    detectPipeliningSupport();

    handleStatus();
    // handleStatus() might have removed the reply because it already called connection->emitReplyError()

    // queue the finished signal, this is required since we might send new requests from
    // slot connected to it. The socket will not fire readyRead signal, if we are already
    // in the slot connected to readyRead
    if (reply && emitFinished)
        QMetaObject::invokeMethod(reply, "finished", Qt::QueuedConnection);


    // reset the reconnection attempts after we receive a complete reply.
    // in case of failures, each channel will attempt two reconnects before emitting error.
    reconnectAttempts = 2;

    // now the channel can be seen as free/idle again, all signal emissions for the reply have been done
    if (state != QHttpNetworkConnectionChannel::ClosingState)
        state = QHttpNetworkConnectionChannel::IdleState;

    // if it does not need to be sent again we can set it to 0
    // the previous code did not do that and we had problems with accidental re-sending of a
    // finished request.
    // Note that this may trigger a segfault at some other point. But then we can fix the underlying
    // problem.
    if (!resendCurrent) {
        request = QHttpNetworkRequest();
        reply = 0;
    }

    // move next from pipeline to current request
    if (!alreadyPipelinedRequests.isEmpty()) {
        if (resendCurrent || connectionCloseEnabled || socket->state() != QAbstractSocket::ConnectedState) {
            // move the pipelined ones back to the main queue
            requeueCurrentlyPipelinedRequests();
            close();
        } else {
            // there were requests pipelined in and we can continue
            HttpMessagePair messagePair = alreadyPipelinedRequests.takeFirst();

            request = messagePair.first;
            reply = messagePair.second;
            state = QHttpNetworkConnectionChannel::ReadingState;
            resendCurrent = false;

            written = 0; // message body, excluding the header, irrelevant here
            bytesTotal = 0; // message body total, excluding the header, irrelevant here

            // pipeline even more
            connection->d_func()->fillPipeline(socket);

            // continue reading
            //_q_receiveReply();
            // this was wrong, allDone gets called from that function anyway.
        }
    } else if (alreadyPipelinedRequests.isEmpty() && socket->bytesAvailable() > 0) {
        // this is weird. we had nothing pipelined but still bytes available. better close it.
        //if (socket->bytesAvailable() > 0)
        //    close();
        //
        // FIXME
        // We do not close it anymore now, but should introduce this again after having fixed
        // the chunked decoder in QHttpNetworkReply to read the whitespace after the last chunk.
        // (Currently this is worked around by readStatus in the QHttpNetworkReply ignoring
        // leading whitespace.
        QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
    } else if (alreadyPipelinedRequests.isEmpty()) {
        if (connectionCloseEnabled)
            if (socket->state() != QAbstractSocket::UnconnectedState)
                close();
        if (qobject_cast<QHttpNetworkConnection*>(connection))
            QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
    }
}
示例#4
0
// this is called from the destructor of QHttpNetworkReply. It is called when
// the reply was finished correctly or when it was aborted.
void QHttpNetworkConnectionPrivate::removeReply(QHttpNetworkReply *reply)
{
    Q_Q(QHttpNetworkConnection);

    // check if the reply is currently being processed or it is pipelined in
    for (int i = 0; i < channelCount; ++i) {
        // is the reply associated the currently processing of this channel?
        if (channels[i].reply == reply) {
            channels[i].reply = 0;
            channels[i].request = QHttpNetworkRequest();
            channels[i].resendCurrent = false;

            if (!reply->isFinished() && !channels[i].alreadyPipelinedRequests.isEmpty()) {
                // the reply had to be prematurely removed, e.g. it was not finished
                // therefore we have to requeue the already pipelined requests.
                channels[i].requeueCurrentlyPipelinedRequests();
            }

            // if HTTP mandates we should close
            // or the reply is not finished yet, e.g. it was aborted
            // we have to close that connection
            if (reply->d_func()->isConnectionCloseEnabled() || !reply->isFinished())
                channels[i].close();

            QMetaObject::invokeMethod(q, "_q_startNextRequest", Qt::QueuedConnection);
            return;
        }

        // is the reply inside the pipeline of this channel already?
        for (int j = 0; j < channels[i].alreadyPipelinedRequests.length(); j++) {
            if (channels[i].alreadyPipelinedRequests.at(j).second == reply) {
               // Remove that HttpMessagePair
               channels[i].alreadyPipelinedRequests.removeAt(j);

               channels[i].requeueCurrentlyPipelinedRequests();

               // Since some requests had already been pipelined, but we removed
               // one and re-queued the others
               // we must force a connection close after the request that is
               // currently in processing has been finished.
               if (channels[i].reply)
                   channels[i].reply->d_func()->forceConnectionCloseEnabled = true;

               QMetaObject::invokeMethod(q, "_q_startNextRequest", Qt::QueuedConnection);
               return;
            }
        }
    }
    // remove from the high priority queue
    if (!highPriorityQueue.isEmpty()) {
        for (int j = highPriorityQueue.count() - 1; j >= 0; --j) {
            HttpMessagePair messagePair = highPriorityQueue.at(j);
            if (messagePair.second == reply) {
                highPriorityQueue.removeAt(j);
                QMetaObject::invokeMethod(q, "_q_startNextRequest", Qt::QueuedConnection);
                return;
            }
        }
    }
    // remove from the low priority queue
    if (!lowPriorityQueue.isEmpty()) {
        for (int j = lowPriorityQueue.count() - 1; j >= 0; --j) {
            HttpMessagePair messagePair = lowPriorityQueue.at(j);
            if (messagePair.second == reply) {
                lowPriorityQueue.removeAt(j);
                QMetaObject::invokeMethod(q, "_q_startNextRequest", Qt::QueuedConnection);
                return;
            }
        }
    }
}
示例#5
0
void QHttpNetworkConnectionChannel::allDone()
{
#ifndef QT_NO_COMPRESS
    // expand the whole data.
    if (reply->d_func()->expectContent() && reply->d_func()->autoDecompress && !reply->d_func()->streamEnd)
        expand(true); // ### if expand returns false, its an error
#endif
    // while handling 401 & 407, we might reset the status code, so save this.
    bool emitFinished = reply->d_func()->shouldEmitSignals();
    handleStatus();
    // ### at this point there should be no more data on the socket
    // close if server requested
    bool connectionCloseEnabled = reply->d_func()->isConnectionCloseEnabled();
    if (connectionCloseEnabled)
        close();
    // queue the finished signal, this is required since we might send new requests from
    // slot connected to it. The socket will not fire readyRead signal, if we are already
    // in the slot connected to readyRead
    if (emitFinished)
        QMetaObject::invokeMethod(reply, "finished", Qt::QueuedConnection);
    // reset the reconnection attempts after we receive a complete reply.
    // in case of failures, each channel will attempt two reconnects before emitting error.
    reconnectAttempts = 2;

    detectPipeliningSupport();

    // now the channel can be seen as free/idle again, all signal emissions for the reply have been done
    this->state = QHttpNetworkConnectionChannel::IdleState;

    // if it does not need to be sent again we can set it to 0
    // the previous code did not do that and we had problems with accidental re-sending of a
    // finished request.
    // Note that this may trigger a segfault at some other point. But then we can fix the underlying
    // problem.
    if (!resendCurrent) {
        request = QHttpNetworkRequest();
        reply = 0;
    }

    // move next from pipeline to current request
    if (!alreadyPipelinedRequests.isEmpty()) {
        if (resendCurrent || connectionCloseEnabled || socket->state() != QAbstractSocket::ConnectedState) {
            // move the pipelined ones back to the main queue
            requeueCurrentlyPipelinedRequests();
            close();
        } else {
            // there were requests pipelined in and we can continue
            HttpMessagePair messagePair = alreadyPipelinedRequests.takeFirst();

            request = messagePair.first;
            reply = messagePair.second;
            state = QHttpNetworkConnectionChannel::ReadingState;
            resendCurrent = false;

            written = 0; // message body, excluding the header, irrelevant here
            bytesTotal = 0; // message body total, excluding the header, irrelevant here

            // pipeline even more
            connection->d_func()->fillPipeline(socket);

            // continue reading
            //_q_receiveReply();
            // this was wrong, allDone gets called from that function anyway.
        }
    } else if (alreadyPipelinedRequests.isEmpty() && socket->bytesAvailable() > 0) {
        eatWhitespace();
        // this is weird. we had nothing pipelined but still bytes available. better close it.
        if (socket->bytesAvailable() > 0)
            close();
        QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
    } else if (alreadyPipelinedRequests.isEmpty()) {
        if (qobject_cast<QHttpNetworkConnection*>(connection))
            QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
    }
}