Fix connecting via an already open QIODevice transportv5.11.0-beta4v5.11.0-beta3

In case a transport is handed over to QMqttClient which is based on
QIODevice and already opened, the implementation was not sending a
CONNECT request and hence the broker never got informed about a new
client establishing connection. Hence manually send the connect
statement.

For QAbstractSocket based transports this was done already.

Task-number: QTBUG-66955
Change-Id: I50cba1b6dd03d0af561d4e39a3b57af5b2161a4b
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mqtt/qmqttconnection.cpp b/src/mqtt/qmqttconnection.cpp
index aaaa514..b60816a 100644
--- a/src/mqtt/qmqttconnection.cpp
+++ b/src/mqtt/qmqttconnection.cpp
@@ -126,7 +126,7 @@ bool QMqttConnection::ensureTransportOpen(const QString &sslPeerName)
 
     if (m_transportType == QMqttClient::IODevice) {
         if (m_transport->isOpen())
-            return true;
+            return sendControlConnect();
 
         if (!m_transport->open(QIODevice::ReadWrite)) {
             qWarning("Could not open Transport IO device");