opcuaviewer: Fix connect with the open62541 backend

The open62541 backend does not yet support certificate authentication
and aborts the connection attempt if it is requested.

Change-Id: Ia078156c7a17e58f72ee934ee7b0ec935f33cb22
Reviewed-by: Rainer Keller <Rainer.Keller@qt.io>
Reviewed-by: Frank Meerkoetter <frank.meerkoetter@basyskom.com>
(cherry picked from commit a5eab4b543d5df1f1e8b7d27fedcd898339024e9)

1 files changed, 5 insertions, 3 deletions

diff --git a/examples/opcua/opcuaviewer/mainwindow.cpp b/examples/opcua/opcuaviewer/mainwindow.cpp
index f829a8f..3510bb3 100644
--- a/examples/opcua/opcuaviewer/mainwindow.cpp
+++ b/examples/opcua/opcuaviewer/mainwindow.cpp
@@ -220,9 +220,11 @@ void MainWindow::createClient()
         mOpcUaClient->setIdentity(m_identity);
         mOpcUaClient->setPkiConfiguration(m_pkiConfig);
 
-        QOpcUaAuthenticationInformation authInfo;
-        authInfo.setCertificateAuthentication();
-        mOpcUaClient->setAuthenticationInformation(authInfo);
+        if (mOpcUaPlugin->currentText() == QStringLiteral("uacpp")) {
+            QOpcUaAuthenticationInformation authInfo;
+            authInfo.setCertificateAuthentication();
+            mOpcUaClient->setAuthenticationInformation(authInfo);
+        }
 
         connect(mOpcUaClient, &QOpcUaClient::connected, this, &MainWindow::clientConnected);
         connect(mOpcUaClient, &QOpcUaClient::disconnected, this, &MainWindow::clientDisconnected);