QNAM HTTP: Always set channel.reply to 0 when done

This will help us to track down a sporadic bug that made requests
being sent again even if they were already done.

Reviewed-by: Peter Hartmann

5 files changed, 27 insertions, 22 deletions

diff --git a/src/network/access/qhttpnetworkconnection.cpp b/src/network/access/qhttpnetworkconnection.cpp
index cc6a1c8..327d2db 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()) {
@@ -861,17 +862,6 @@ 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 03cf09c..823774e 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 2a3036b..89fd032 100644
--- a/src/network/access/qhttpnetworkconnectionchannel.cpp
+++ b/src/network/access/qhttpnetworkconnectionchannel.cpp
@@ -137,6 +137,7 @@ bool QHttpNetworkConnectionChannel::sendRequest()
         if (reply) {
             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;
         }
@@ -568,7 +569,8 @@ 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
@@ -579,14 +581,22 @@ 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();
@@ -745,6 +755,7 @@ void  QHttpNetworkConnectionChannel::pipelineInto(HttpMessagePair &pair)
     if (reply) {
         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;
     }
diff --git a/src/network/access/qhttpnetworkreply.cpp b/src/network/access/qhttpnetworkreply.cpp
index 512c045..984f557 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 af9266b..fa240ec 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