Revision control

Copy as Markdown

// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
import QtOpcUa as QtOpcUa
Item {
//! [Basic discovery]
QtOpcUa.Connection {
id: connection
backend: availableBackends[0]
defaultConnection: true
}
QtOpcUa.ServerDiscovery {
discoveryUrl: "opc.tcp://127.0.0.1:43344"
onServersChanged: {
if (status.isGood) {
if (status.status == QtOpcUa.Status.GoodCompletesAsynchronusly)
return; // wait until finished
if (count > 0) {
// choose right server
endpointDiscovery.serverUrl = at(0).discoveryUrls[0];
console.log("Using server URL:", endpointDiscovery.serverUrl);
} else {
// no servers retrieved
}
} else {
// Fetching servers failed
console.log("Error fetching server:", servers.status.status);
}
}
}
QtOpcUa.EndpointDiscovery {
id: endpointDiscovery
onEndpointsChanged: {
if (status.isGood) {
if (status.status == QtOpcUa.Status.GoodCompletesAsynchronusly)
return; // wait until finished
if (count > 0) {
// choose right endpoint
console.log("Using endpoint", at(0).endpointUrl, at(0).securityPolicy);
connection.connectToEndpoint(at(0));
} else {
// no endpoints retrieved
}
} else {
// Fetching endpoints failed
console.log("Error fetching endpoints:", status.status);
}
}
}
//! [Basic discovery]
}