Merge remote branch 'origin/master' into bearermanagement/unit-tests

Conflicts:
	src/network/access/qnetworkaccessmanager.cpp

16 files changed, 238 insertions, 110 deletions

diff --git a/src/network/access/qhttpnetworkconnection.cpp b/src/network/access/qhttpnetworkconnection.cpp
index cc6a1c8caa..62aa2d76b8 100644
--- a/src/network/access/qhttpnetworkconnection.cpp
+++ b/src/network/access/qhttpnetworkconnection.cpp
@@ -404,6 +404,7 @@ QHttpNetworkReply* QHttpNetworkConnectionPrivate::queueRequest(const QHttpNetwor
     QHttpNetworkReply *reply = new QHttpNetworkReply(request.url());
     reply->setRequest(request);
     reply->d_func()->connection = q;
+    reply->d_func()->connectionChannel = &channels[0]; // will have the correct one set later
     HttpMessagePair pair = qMakePair(request, reply);
 
     switch (request.priority()) {
@@ -688,14 +689,12 @@ void QHttpNetworkConnectionPrivate::_q_startNextRequest()
         if (channels[i].resendCurrent) {
             channels[i].resendCurrent = false;
             channels[i].state = QHttpNetworkConnectionChannel::IdleState;
-            if (channels[i].reply) {
 
-                // if this is not possible, error will be emitted and connection terminated
-                if (!channels[i].resetUploadData())
-                    continue;
+            // if this is not possible, error will be emitted and connection terminated
+            if (!channels[i].resetUploadData())
+                continue;
 
-                channels[i].sendRequest();
-            }
+            channels[i].sendRequest();
         }
     }
 
@@ -861,17 +860,6 @@ QNetworkProxy QHttpNetworkConnection::transparentProxy() const
 
 // SSL support below
 #ifndef QT_NO_OPENSSL
-QSslConfiguration QHttpNetworkConnectionPrivate::sslConfiguration(const QHttpNetworkReply &reply) const
-{
-    if (!encrypt)
-        return QSslConfiguration();
-
-    for (int i = 0; i < channelCount; ++i)
-        if (channels[i].reply == &reply)
-            return static_cast<QSslSocket *>(channels[0].socket)->sslConfiguration();
-    return QSslConfiguration(); // pending or done request
-}
-
 void QHttpNetworkConnection::setSslConfiguration(const QSslConfiguration &config)
 {
     Q_D(QHttpNetworkConnection);
diff --git a/src/network/access/qhttpnetworkconnection_p.h b/src/network/access/qhttpnetworkconnection_p.h
index 03cf09cb5c..823774e6c9 100644
--- a/src/network/access/qhttpnetworkconnection_p.h
+++ b/src/network/access/qhttpnetworkconnection_p.h
@@ -210,11 +210,6 @@ public:
     void emitReplyError(QAbstractSocket *socket, QHttpNetworkReply *reply, QNetworkReply::NetworkError errorCode);
     bool handleAuthenticateChallenge(QAbstractSocket *socket, QHttpNetworkReply *reply, bool isProxy, bool &resend);
 
-
-#ifndef QT_NO_OPENSSL
-    QSslConfiguration sslConfiguration(const QHttpNetworkReply &reply) const;
-#endif
-
 #ifndef QT_NO_NETWORKPROXY
     QNetworkProxy networkProxy;
     void emitProxyAuthenticationRequired(const QHttpNetworkConnectionChannel *chan, const QNetworkProxy &proxy, QAuthenticator* auth);
diff --git a/src/network/access/qhttpnetworkconnectionchannel.cpp b/src/network/access/qhttpnetworkconnectionchannel.cpp
index b0e632a95e..dbee72ad9c 100644
--- a/src/network/access/qhttpnetworkconnectionchannel.cpp
+++ b/src/network/access/qhttpnetworkconnectionchannel.cpp
@@ -124,6 +124,13 @@ void QHttpNetworkConnectionChannel::close()
 
 bool QHttpNetworkConnectionChannel::sendRequest()
 {
+    if (!reply) {
+        // heh, how should that happen!
+        qWarning() << "QHttpNetworkConnectionChannel::sendRequest() called without QHttpNetworkReply";
+        state = QHttpNetworkConnectionChannel::IdleState;
+        return false;
+    }
+
     switch (state) {
     case QHttpNetworkConnectionChannel::IdleState: { // write the header
         if (!ensureConnection()) {
@@ -134,13 +141,13 @@ bool QHttpNetworkConnectionChannel::sendRequest()
         }
         written = 0; // excluding the header
         bytesTotal = 0;
-        if (reply) {
-            reply->d_func()->clear();
-            reply->d_func()->connection = connection;
-            reply->d_func()->autoDecompress = request.d->autoDecompress;
-            reply->d_func()->pipeliningUsed = false;
-        }
-        state = QHttpNetworkConnectionChannel::WritingState;
+
+        reply->d_func()->clear();
+        reply->d_func()->connection = connection;
+        reply->d_func()->connectionChannel = this;
+        reply->d_func()->autoDecompress = request.d->autoDecompress;
+        reply->d_func()->pipeliningUsed = false;
+
         pendingEncrypt = false;
         // if the url contains authentication parameters, use the new ones
         // both channels will use the new authentication parameters
@@ -174,13 +181,15 @@ bool QHttpNetworkConnectionChannel::sendRequest()
             QObject::connect(uploadByteDevice, SIGNAL(readyRead()),this, SLOT(_q_uploadDataReadyRead()));
 
             bytesTotal = request.contentLength();
+
+            state = QHttpNetworkConnectionChannel::WritingState; // start writing data
+            sendRequest(); //recurse
         } else {
-            state = QHttpNetworkConnectionChannel::WaitingState;
-            sendRequest();
-            break;
+            state = QHttpNetworkConnectionChannel::WaitingState; // now wait for response
+            sendRequest(); //recurse
         }
-        // write the initial chunk together with the headers
-        // fall through
+
+        break;
     }
     case QHttpNetworkConnectionChannel::WritingState:
     {
@@ -190,7 +199,7 @@ bool QHttpNetworkConnectionChannel::sendRequest()
             if (uploadByteDevice)
                 emit reply->dataSendProgress(written, bytesTotal);
             state = QHttpNetworkConnectionChannel::WaitingState; // now wait for response
-            sendRequest();
+            sendRequest(); // recurse
             break;
         }
 
@@ -278,51 +287,50 @@ void QHttpNetworkConnectionChannel::_q_receiveReply()
 {
     Q_ASSERT(socket);
 
+    if (!reply) {
+        // heh, how should that happen!
+        qWarning() << "QHttpNetworkConnectionChannel::_q_receiveReply() called without QHttpNetworkReply,"
+                << socket->bytesAvailable() << "bytes on socket.";
+        close();
+        return;
+    }
+
     qint64 bytes = 0;
     QAbstractSocket::SocketState socketState = socket->state();
 
     // connection might be closed to signal the end of data
     if (socketState == QAbstractSocket::UnconnectedState) {
-        if (!socket->bytesAvailable()) {
-            if (reply && reply->d_func()->state == QHttpNetworkReplyPrivate::ReadingDataState) {
+        if (socket->bytesAvailable() <= 0) {
+            if (reply->d_func()->state == QHttpNetworkReplyPrivate::ReadingDataState) {
+                // finish this reply. this case happens when the server did not send a content length
                 reply->d_func()->state = QHttpNetworkReplyPrivate::AllDoneState;
                 allDone();
+                return;
             } else {
-                // try to reconnect/resend before sending an error.
-                if (reconnectAttempts-- > 0) {
-                    closeAndResendCurrentRequest();
-                } else if (reply) {
-                    reply->d_func()->errorString = connection->d_func()->errorDetail(QNetworkReply::RemoteHostClosedError, socket);
-                    emit reply->finishedWithError(QNetworkReply::RemoteHostClosedError, reply->d_func()->errorString);
-                    QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
-                }
+                handleUnexpectedEOF();
+                return;
             }
+        } else {
+            // socket not connected but still bytes for reading.. just continue in this function
         }
     }
 
     // read loop for the response
     while (socket->bytesAvailable()) {
-        QHttpNetworkReplyPrivate::ReplyState state = reply ? reply->d_func()->state : QHttpNetworkReplyPrivate::AllDoneState;
+        QHttpNetworkReplyPrivate::ReplyState state = reply->d_func()->state;
         switch (state) {
         case QHttpNetworkReplyPrivate::NothingDoneState: {
             // only eat whitespace on the first call
             eatWhitespace();
             state = reply->d_func()->state = QHttpNetworkReplyPrivate::ReadingStatusState;
+            // fallthrough
         }
         case QHttpNetworkReplyPrivate::ReadingStatusState: {
             qint64 statusBytes = reply->d_func()->readStatus(socket);
-            if (statusBytes == -1 && reconnectAttempts <= 0) {
-                // too many errors reading/receiving/parsing the status, close the socket and emit error
-                close();
-                reply->d_func()->errorString = connection->d_func()->errorDetail(QNetworkReply::ProtocolFailure, socket);
-                emit reply->finishedWithError(QNetworkReply::ProtocolFailure, reply->d_func()->errorString);
-                QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
-                break;
-            } else if (statusBytes == -1) {
-                reconnectAttempts--;
-                reply->d_func()->clear();
-                closeAndResendCurrentRequest();
-                break;
+            if (statusBytes == -1) {
+                // connection broke while reading status. also handled if later _q_disconnected is called
+                handleUnexpectedEOF();
+                return;
             }
             bytes += statusBytes;
             lastStatus = reply->d_func()->statusCode;
@@ -330,7 +338,13 @@ void QHttpNetworkConnectionChannel::_q_receiveReply()
         }
         case QHttpNetworkReplyPrivate::ReadingHeaderState: {
             QHttpNetworkReplyPrivate *replyPrivate = reply->d_func();
-            bytes += replyPrivate->readHeader(socket);
+            qint64 headerBytes = replyPrivate->readHeader(socket);
+            if (headerBytes == -1) {
+                // connection broke while reading headers. also handled if later _q_disconnected is called
+                handleUnexpectedEOF();
+                return;
+            }
+            bytes += headerBytes;
             if (replyPrivate->state == QHttpNetworkReplyPrivate::ReadingDataState) {
                 if (replyPrivate->isGzipped() && replyPrivate->autoDecompress) {
                     // remove the Content-Length from header
@@ -417,8 +431,10 @@ void QHttpNetworkConnectionChannel::_q_receiveReply()
 #endif
                 }
             }
+            // still in ReadingDataState? This function will be called again by the socket's readyRead
             if (replyPrivate->state == QHttpNetworkReplyPrivate::ReadingDataState)
                 break;
+
             // everything done, fall through
             }
       case QHttpNetworkReplyPrivate::AllDoneState:
@@ -430,6 +446,23 @@ void QHttpNetworkConnectionChannel::_q_receiveReply()
     }
 }
 
+// called when unexpectedly reading a -1 or when data is expected but socket is closed
+void QHttpNetworkConnectionChannel::handleUnexpectedEOF()
+{
+    if (reconnectAttempts <= 0) {
+        // too many errors reading/receiving/parsing the status, close the socket and emit error
+        requeueCurrentlyPipelinedRequests();
+        close();
+        reply->d_func()->errorString = connection->d_func()->errorDetail(QNetworkReply::RemoteHostClosedError, socket);
+        emit reply->finishedWithError(QNetworkReply::RemoteHostClosedError, reply->d_func()->errorString);
+        QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
+    } else {
+        reconnectAttempts--;
+        reply->d_func()->clear();
+        closeAndResendCurrentRequest();
+    }
+}
+
 bool QHttpNetworkConnectionChannel::ensureConnection()
 {
     QAbstractSocket::SocketState socketState = socket->state();
@@ -556,7 +589,8 @@ void QHttpNetworkConnectionChannel::allDone()
     handleStatus();
     // ### at this point there should be no more data on the socket
     // close if server requested
-    if (reply->d_func()->isConnectionCloseEnabled())
+    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
@@ -567,14 +601,22 @@ void QHttpNetworkConnectionChannel::allDone()
     // 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;
 
-    detectPipeliningSupport();
+    // 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)
+        reply = 0;
 
     // move next from pipeline to current request
     if (!alreadyPipelinedRequests.isEmpty()) {
-        if (resendCurrent || reply->d_func()->isConnectionCloseEnabled() || socket->state() != QAbstractSocket::ConnectedState) {
+        if (resendCurrent || connectionCloseEnabled || socket->state() != QAbstractSocket::ConnectedState) {
             // move the pipelined ones back to the main queue
             requeueCurrentlyPipelinedRequests();
             close();
@@ -730,12 +772,11 @@ void  QHttpNetworkConnectionChannel::pipelineInto(HttpMessagePair &pair)
 
     QHttpNetworkRequest &request = pair.first;
     QHttpNetworkReply *reply = pair.second;
-    if (reply) {
-        reply->d_func()->clear();
-        reply->d_func()->connection = connection;
-        reply->d_func()->autoDecompress = request.d->autoDecompress;
-        reply->d_func()->pipeliningUsed = true;
-    }
+    reply->d_func()->clear();
+    reply->d_func()->connection = connection;
+    reply->d_func()->connectionChannel = this;
+    reply->d_func()->autoDecompress = request.d->autoDecompress;
+    reply->d_func()->pipeliningUsed = true;
 
 #ifndef QT_NO_NETWORKPROXY
     QByteArray header = QHttpNetworkRequestPrivate::header(request,
@@ -799,9 +840,10 @@ void QHttpNetworkConnectionChannel::_q_disconnected()
 {
     // read the available data before closing
     if (isSocketWaiting() || isSocketReading()) {
-        state = QHttpNetworkConnectionChannel::ReadingState;
-        if (reply)
+        if (reply) {
+            state = QHttpNetworkConnectionChannel::ReadingState;
             _q_receiveReply();
+        }
     } else if (state == QHttpNetworkConnectionChannel::IdleState && resendCurrent) {
         // re-sending request because the socket was in ClosingState
         QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
diff --git a/src/network/access/qhttpnetworkconnectionchannel_p.h b/src/network/access/qhttpnetworkconnectionchannel_p.h
index 75ab50d48f..5032d2bb27 100644
--- a/src/network/access/qhttpnetworkconnectionchannel_p.h
+++ b/src/network/access/qhttpnetworkconnectionchannel_p.h
@@ -157,6 +157,7 @@ public:
     void requeueCurrentlyPipelinedRequests();
     void detectPipeliningSupport();
 
+    void handleUnexpectedEOF();
     void closeAndResendCurrentRequest();
 
     void eatWhitespace();
diff --git a/src/network/access/qhttpnetworkreply.cpp b/src/network/access/qhttpnetworkreply.cpp
index 512c04597a..984f557164 100644
--- a/src/network/access/qhttpnetworkreply.cpp
+++ b/src/network/access/qhttpnetworkreply.cpp
@@ -230,6 +230,7 @@ void QHttpNetworkReplyPrivate::clear()
     currentChunkRead = 0;
     connectionCloseEnabled = true;
     connection = 0;
+    connectionChannel = 0;
 #ifndef QT_NO_COMPRESS
     if (initInflate)
         inflateEnd(&inflateStrm);
@@ -803,9 +804,15 @@ void QHttpNetworkReplyPrivate::eraseData()
 QSslConfiguration QHttpNetworkReply::sslConfiguration() const
 {
     Q_D(const QHttpNetworkReply);
-    if (d->connection)
-        return d->connection->d_func()->sslConfiguration(*this);
-    return QSslConfiguration();
+
+    if (!d->connectionChannel)
+        return QSslConfiguration();
+
+    QSslSocket *sslSocket = qobject_cast<QSslSocket*>(d->connectionChannel->socket);
+    if (!sslSocket)
+        return QSslConfiguration();
+
+    return sslSocket->sslConfiguration();
 }
 
 void QHttpNetworkReply::setSslConfiguration(const QSslConfiguration &config)
diff --git a/src/network/access/qhttpnetworkreply_p.h b/src/network/access/qhttpnetworkreply_p.h
index af9266b033..fa240ece38 100644
--- a/src/network/access/qhttpnetworkreply_p.h
+++ b/src/network/access/qhttpnetworkreply_p.h
@@ -86,6 +86,7 @@ static const unsigned char gz_magic[2] = {0x1f, 0x8b}; // gzip magic header
 QT_BEGIN_NAMESPACE
 
 class QHttpNetworkConnection;
+class QHttpNetworkConnectionChannel;
 class QHttpNetworkRequest;
 class QHttpNetworkConnectionPrivate;
 class QHttpNetworkReplyPrivate;
@@ -218,6 +219,7 @@ public:
     qint64 currentChunkSize;
     qint64 currentChunkRead;
     QPointer<QHttpNetworkConnection> connection;
+    QPointer<QHttpNetworkConnectionChannel> connectionChannel;
     bool initInflate;
     bool streamEnd;
 #ifndef QT_NO_COMPRESS
diff --git a/src/network/access/qhttpnetworkrequest.cpp b/src/network/access/qhttpnetworkrequest.cpp
index 8cdfe6a472..9eb2399b25 100644
--- a/src/network/access/qhttpnetworkrequest.cpp
+++ b/src/network/access/qhttpnetworkrequest.cpp
@@ -61,6 +61,7 @@ QHttpNetworkRequestPrivate::QHttpNetworkRequestPrivate(const QHttpNetworkRequest
     uploadByteDevice = other.uploadByteDevice;
     autoDecompress = other.autoDecompress;
     pipeliningAllowed = other.pipeliningAllowed;
+    customVerb = other.customVerb;
 }
 
 QHttpNetworkRequestPrivate::~QHttpNetworkRequestPrivate()
@@ -76,36 +77,38 @@ bool QHttpNetworkRequestPrivate::operator==(const QHttpNetworkRequestPrivate &ot
 
 QByteArray QHttpNetworkRequestPrivate::methodName() const
 {
-    QByteArray ba;
     switch (operation) {
-    case QHttpNetworkRequest::Options:
-        ba += "OPTIONS";
-        break;
     case QHttpNetworkRequest::Get:
-        ba += "GET";
+        return "GET";
         break;
     case QHttpNetworkRequest::Head:
-        ba += "HEAD";
+        return "HEAD";
         break;
     case QHttpNetworkRequest::Post:
-        ba += "POST";
+        return "POST";
+        break;
+    case QHttpNetworkRequest::Options:
+        return "OPTIONS";
         break;
     case QHttpNetworkRequest::Put:
-        ba += "PUT";
+        return "PUT";
         break;
     case QHttpNetworkRequest::Delete:
-        ba += "DELETE";
+        return "DELETE";
         break;
     case QHttpNetworkRequest::Trace:
-        ba += "TRACE";
+        return "TRACE";
         break;
     case QHttpNetworkRequest::Connect:
-        ba += "CONNECT";
+        return "CONNECT";
+        break;
+    case QHttpNetworkRequest::Custom:
+        return customVerb;
         break;
     default:
         break;
     }
-    return ba;
+    return QByteArray();
 }
 
 QByteArray QHttpNetworkRequestPrivate::uri(bool throughProxy) const
@@ -128,26 +131,37 @@ QByteArray QHttpNetworkRequestPrivate::uri(bool throughProxy) const
 
 QByteArray QHttpNetworkRequestPrivate::header(const QHttpNetworkRequest &request, bool throughProxy)
 {
-    QByteArray ba = request.d->methodName();
-    QByteArray uri = request.d->uri(throughProxy);
-    ba += ' ' + uri;
+    QList<QPair<QByteArray, QByteArray> > fields = request.header();
+    QByteArray ba;
+    ba.reserve(40 + fields.length()*25); // very rough lower bound estimation
 
-    QString majorVersion = QString::number(request.majorVersion());
-    QString minorVersion = QString::number(request.minorVersion());
-    ba += " HTTP/" + majorVersion.toLatin1() + '.' + minorVersion.toLatin1() + "\r\n";
+    ba += request.d->methodName();
+    ba += ' ';
+    ba += request.d->uri(throughProxy);
+
+    ba += " HTTP/";
+    ba += QByteArray::number(request.majorVersion());
+    ba += '.';
+    ba += QByteArray::number(request.minorVersion());
+    ba += "\r\n";
 
-    QList<QPair<QByteArray, QByteArray> > fields = request.header();
     QList<QPair<QByteArray, QByteArray> >::const_iterator it = fields.constBegin();
-    for (; it != fields.constEnd(); ++it)
-        ba += it->first + ": " + it->second + "\r\n";
+    QList<QPair<QByteArray, QByteArray> >::const_iterator endIt = fields.constEnd();
+    for (; it != endIt; ++it) {
+        ba += it->first;
+        ba += ": ";
+        ba += it->second;
+        ba += "\r\n";
+    }
     if (request.d->operation == QHttpNetworkRequest::Post) {
         // add content type, if not set in the request
         if (request.headerField("content-type").isEmpty())
             ba += "Content-Type: application/x-www-form-urlencoded\r\n";
         if (!request.d->uploadByteDevice && request.d->url.hasQuery()) {
             QByteArray query = request.d->url.encodedQuery();
-            ba += "Content-Length: "+ QByteArray::number(query.size()) + "\r\n";
-            ba += "\r\n";
+            ba += "Content-Length: ";
+            ba += QByteArray::number(query.size());
+            ba += "\r\n\r\n";
             ba += query;
         } else {
             ba += "\r\n";
@@ -230,6 +244,16 @@ void QHttpNetworkRequest::setOperation(Operation operation)
     d->operation = operation;
 }
 
+QByteArray QHttpNetworkRequest::customVerb() const
+{
+    return d->customVerb;
+}
+
+void QHttpNetworkRequest::setCustomVerb(const QByteArray &customVerb)
+{
+    d->customVerb = customVerb;
+}
+
 QHttpNetworkRequest::Priority QHttpNetworkRequest::priority() const
 {
     return d->priority;
diff --git a/src/network/access/qhttpnetworkrequest_p.h b/src/network/access/qhttpnetworkrequest_p.h
index dad118e9fe..1b35a84642 100644
--- a/src/network/access/qhttpnetworkrequest_p.h
+++ b/src/network/access/qhttpnetworkrequest_p.h
@@ -72,7 +72,8 @@ public:
         Put,
         Delete,
         Trace,
-        Connect
+        Connect,
+        Custom
     };
 
     enum Priority {
@@ -103,6 +104,9 @@ public:
     Operation operation() const;
     void setOperation(Operation operation);
 
+    QByteArray customVerb() const;
+    void setCustomVerb(const QByteArray &customOperation);
+
     Priority priority() const;
     void setPriority(Priority priority);
 
@@ -133,6 +137,7 @@ public:
     static QByteArray header(const QHttpNetworkRequest &request, bool throughProxy);
 
     QHttpNetworkRequest::Operation operation;
+    QByteArray customVerb;
     QHttpNetworkRequest::Priority priority;
     mutable QNonContiguousByteDevice* uploadByteDevice;
     bool autoDecompress;
diff --git a/src/network/access/qnetworkaccessbackend.cpp b/src/network/access/qnetworkaccessbackend.cpp
index 4441993143..1fcfebbf38 100644
--- a/src/network/access/qnetworkaccessbackend.cpp
+++ b/src/network/access/qnetworkaccessbackend.cpp
@@ -122,8 +122,11 @@ QNonContiguousByteDevice* QNetworkAccessBackend::createUploadByteDevice()
 
     if (reply->outgoingDataBuffer)
         device = QNonContiguousByteDeviceFactory::create(reply->outgoingDataBuffer);
-    else
+    else if (reply->outgoingData) {
         device = QNonContiguousByteDeviceFactory::create(reply->outgoingData);
+    } else {
+        return 0;
+    }
 
     bool bufferDisallowed =
             reply->request.attribute(QNetworkRequest::DoNotBufferUploadDataAttribute,
diff --git a/src/network/access/qnetworkaccesshttpbackend.cpp b/src/network/access/qnetworkaccesshttpbackend.cpp
index aa6a8205e5..7a48c2b16e 100644
--- a/src/network/access/qnetworkaccesshttpbackend.cpp
+++ b/src/network/access/qnetworkaccesshttpbackend.cpp
@@ -213,6 +213,7 @@ QNetworkAccessHttpBackendFactory::create(QNetworkAccessManager::Operation op,
     case QNetworkAccessManager::HeadOperation:
     case QNetworkAccessManager::PutOperation:
     case QNetworkAccessManager::DeleteOperation:
+    case QNetworkAccessManager::CustomOperation:
         break;
 
     default:
@@ -527,6 +528,14 @@ void QNetworkAccessHttpBackend::postRequest()
         httpRequest.setOperation(QHttpNetworkRequest::Delete);
         break;
 
+    case QNetworkAccessManager::CustomOperation:
+        invalidateCache(); // for safety reasons, we don't know what the operation does
+        httpRequest.setOperation(QHttpNetworkRequest::Custom);
+        httpRequest.setUploadByteDevice(createUploadByteDevice());
+        httpRequest.setCustomVerb(request().attribute(
+                QNetworkRequest::CustomVerbAttribute).toByteArray());
+        break;
+
     default:
         break;                  // can't happen
     }
@@ -1013,7 +1022,7 @@ QNetworkCacheMetaData QNetworkAccessHttpBackend::fetchCacheMetaData(const QNetwo
         // of writes to disk when using a QNetworkDiskCache (i.e. don't
         // write to disk when only the date changes).
         // However, without the date we cannot calculate the age of the page
-        // anymore. Consider a proper fix of that problem for 4.6.1.
+        // anymore.
         //if (header == "date")
             //continue;
 
diff --git a/src/network/access/qnetworkaccessmanager.cpp b/src/network/access/qnetworkaccessmanager.cpp
index ea60f98f17..b9bd52ae31 100644
--- a/src/network/access/qnetworkaccessmanager.cpp
+++ b/src/network/access/qnetworkaccessmanager.cpp
@@ -157,6 +157,9 @@ static void ensureInitialized()
     \value DeleteOperation      delete contents operation (created with
     deleteResource())
 
+    \value CustomOperation      custom operation (created with
+    sendCustomRequest())
+
     \omitvalue UnknownOperation
 
     \sa QNetworkReply::operation()
@@ -606,7 +609,7 @@ QNetworkReply *QNetworkAccessManager::head(const QNetworkRequest &request)
 
     The contents as well as associated headers will be downloaded.
 
-    \sa post(), put(), deleteResource()
+    \sa post(), put(), deleteResource(), sendCustomRequest()
 */
 QNetworkReply *QNetworkAccessManager::get(const QNetworkRequest &request)
 {
@@ -625,7 +628,7 @@ QNetworkReply *QNetworkAccessManager::get(const QNetworkRequest &request)
     \note Sending a POST request on protocols other than HTTP and
     HTTPS is undefined and will probably fail.
 
-    \sa get(), put(), deleteResource()
+    \sa get(), put(), deleteResource(), sendCustomRequest()
 */
 QNetworkReply *QNetworkAccessManager::post(const QNetworkRequest &request, QIODevice *data)
 {
@@ -666,7 +669,7 @@ QNetworkReply *QNetworkAccessManager::post(const QNetworkRequest &request, const
     do not allow. Form upload mechanisms, including that of uploading
     files through HTML forms, use the POST mechanism.
 
-    \sa get(), post()
+    \sa get(), post(), deleteResource(), sendCustomRequest()
 */
 QNetworkReply *QNetworkAccessManager::put(const QNetworkRequest &request, QIODevice *data)
 {
@@ -697,7 +700,7 @@ QNetworkReply *QNetworkAccessManager::put(const QNetworkRequest &request, const
     \note This feature is currently available for HTTP only, performing an 
     HTTP DELETE request.
 
-    \sa get(), post(), put()
+    \sa get(), post(), put(), sendCustomRequest()
 */
 QNetworkReply *QNetworkAccessManager::deleteResource(const QNetworkRequest &request)
 {
@@ -809,6 +812,32 @@ bool QNetworkAccessManager::networkAccessEnabled() const
 }
 
 /*!
+    \since 4.7
+
+    Sends a custom request to the server identified by the URL of \a request.
+
+    It is the user's responsibility to send a \a verb to the server that is valid
+    according to the HTTP specification.
+
+    This method provides means to send verbs other than the common ones provided
+    via get() or post() etc., for instance sending an HTTP OPTIONS command.
+
+    If \a data is not empty, the contents of the \a data
+    device will be uploaded to the server; in that case, data must be open for
+    reading and must remain valid until the finished() signal is emitted for this reply.
+
+    \note This feature is currently available for HTTP only.
+
+    \sa get(), post(), put(), deleteResource()
+*/
+QNetworkReply *QNetworkAccessManager::sendCustomRequest(const QNetworkRequest &request, const QByteArray &verb, QIODevice *data)
+{
+    QNetworkRequest newRequest(request);
+    newRequest.setAttribute(QNetworkRequest::CustomVerbAttribute, verb);
+    return d_func()->postProcess(createRequest(QNetworkAccessManager::CustomOperation, newRequest, data));
+}
+
+/*!
     Returns a new QNetworkReply object to handle the operation \a op
     and request \a req. The device \a outgoingData is always 0 for Get and
     Head requests, but is the value passed to post() and put() in
diff --git a/src/network/access/qnetworkaccessmanager.h b/src/network/access/qnetworkaccessmanager.h
index 6fdb678428..252dfd0607 100644
--- a/src/network/access/qnetworkaccessmanager.h
+++ b/src/network/access/qnetworkaccessmanager.h
@@ -79,6 +79,7 @@ public:
         PutOperation,
         PostOperation,
         DeleteOperation,
+        CustomOperation,
 
         UnknownOperation = 0
     };
@@ -106,6 +107,7 @@ public:
     QNetworkReply *put(const QNetworkRequest &request, QIODevice *data);
     QNetworkReply *put(const QNetworkRequest &request, const QByteArray &data);
     QNetworkReply *deleteResource(const QNetworkRequest &request);
+    QNetworkReply *sendCustomRequest(const QNetworkRequest &request, const QByteArray &verb, QIODevice *data = 0);
 
     void setConfiguration(const QNetworkConfiguration &config);
     QNetworkConfiguration configuration() const;
diff --git a/src/network/access/qnetworkrequest.cpp b/src/network/access/qnetworkrequest.cpp
index b8438a26d4..e563f4ebad 100644
--- a/src/network/access/qnetworkrequest.cpp
+++ b/src/network/access/qnetworkrequest.cpp
@@ -182,6 +182,12 @@ QT_BEGIN_NAMESPACE
         Indicates whether the HTTP pipelining was used for receiving
         this reply.
 
+    \value CustomVerbAttribute
+       Requests only, type: QVariant::ByteArray
+        Holds the value for the custom HTTP verb to send (destined for usage
+        of other verbs than GET, POST, PUT and DELETE). This verb is set
+        when calling QNetworkAccessManager::sendCustomRequest().
+
     \value User
         Special type. Additional information can be passed in
         QVariants with types ranging from User to UserMax. The default
diff --git a/src/network/access/qnetworkrequest.h b/src/network/access/qnetworkrequest.h
index bc2d9da19e..a0ef1a61ae 100644
--- a/src/network/access/qnetworkrequest.h
+++ b/src/network/access/qnetworkrequest.h
@@ -78,6 +78,7 @@ public:
         DoNotBufferUploadDataAttribute,
         HttpPipeliningAllowedAttribute,
         HttpPipeliningWasUsedAttribute,
+        CustomVerbAttribute,
 
         User = 1000,
         UserMax = 32767
diff --git a/src/network/socket/qlocalsocket_p.h b/src/network/socket/qlocalsocket_p.h
index 081697b68e..0f1c23cada 100644
--- a/src/network/socket/qlocalsocket_p.h
+++ b/src/network/socket/qlocalsocket_p.h
@@ -128,10 +128,8 @@ public:
     void _q_stateChanged(QAbstractSocket::SocketState newState);
     void _q_error(QAbstractSocket::SocketError newError);
 #elif defined(Q_OS_WIN)
-    ~QLocalSocketPrivate() {
-	CloseHandle(overlapped.hEvent);
-    }
-
+    ~QLocalSocketPrivate();
+    void destroyPipeHandles();
     void setErrorString(const QString &function);
     void _q_notified();
     void _q_canWrite();
diff --git a/src/network/socket/qlocalsocket_win.cpp b/src/network/socket/qlocalsocket_win.cpp
index 1f94df69c4..3283bf2f3d 100644
--- a/src/network/socket/qlocalsocket_win.cpp
+++ b/src/network/socket/qlocalsocket_win.cpp
@@ -110,6 +110,20 @@ QLocalSocketPrivate::QLocalSocketPrivate() : QIODevicePrivate(),
 {
 }
 
+QLocalSocketPrivate::~QLocalSocketPrivate()
+{
+    destroyPipeHandles();
+    CloseHandle(overlapped.hEvent);
+}
+
+void QLocalSocketPrivate::destroyPipeHandles()
+{
+    if (handle != INVALID_HANDLE_VALUE) {
+        DisconnectNamedPipe(handle);
+        CloseHandle(handle);
+    }
+}
+
 void QLocalSocket::connectToServer(const QString &name, OpenMode openMode)
 {
     Q_D(QLocalSocket);
@@ -388,8 +402,7 @@ void QLocalSocket::close()
     d->readSequenceStarted = false;
     d->pendingReadyRead = false;
     d->pipeClosed = false;
-    DisconnectNamedPipe(d->handle);
-    CloseHandle(d->handle);
+    d->destroyPipeHandles();
     d->handle = INVALID_HANDLE_VALUE;
     ResetEvent(d->overlapped.hEvent);
     d->state = UnconnectedState;
@@ -524,7 +537,10 @@ bool QLocalSocket::waitForDisconnected(int msecs)
 bool QLocalSocket::isValid() const
 {
     Q_D(const QLocalSocket);
-    return (d->handle != INVALID_HANDLE_VALUE);
+    if (d->handle == INVALID_HANDLE_VALUE)
+        return false;
+
+    return PeekNamedPipe(d->handle, NULL, 0, NULL, NULL, NULL);
 }
 
 bool QLocalSocket::waitForReadyRead(int msecs)