快速 CoAP 多点播送探索范例

/**************************************************************************** ** ** Copyright (C) 2019 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the QtCoap module. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/
import QtQuick 2.12 import QtQuick.Window 2.12 import QtQuick.Controls 2.12 import QtQuick.Layouts 1.13 import CoapMulticastClient 1.0 import qtcoap.example.namespace 1.0 Window { visible: true width: 480 height: 480 title: qsTr("Qt Quick CoAP Multicast Discovery") function addResource(resource) { resourceModel.insert(0, {"host" : resource.host, "path" : resource.path, "title" : resource.title}) } CoapMulticastClient { id: client onDiscovered: addResource(resource) onFinished: { statusLabel.text = (error === QtCoap.Error.Ok) ? qsTr("Finished resource discovery.") : qsTr("Resource discovery failed with error code: %1").arg(error) } onError: statusLabel.text = qsTr("Resource discovery failed with error code: %1").arg(error) } GridLayout { anchors.fill: parent anchors.margins: 10 columns: 2 Label { text: qsTr("Host:") } RowLayout { spacing: 5 ComboBox { id: groupComboBox textRole: "group" Layout.preferredWidth: 210 model: ListModel { id: cbItems ListElement { group: qsTr("IPv4 CoAP Nodes") address: "224.0.1.187" value: QtCoap.MulticastGroup.AllCoapNodesIPv4 } ListElement { group: qsTr("IPv6 Link Local CoAP Nodes") address: "ff02::fd" value: QtCoap.MulticastGroup.AllCoapNodesIPv6LinkLocal } ListElement { group: qsTr("IPv6 Site Local CoAP Nodes") address: "ff05::fd" value: QtCoap.MulticastGroup.AllCoapNodesIPv6SiteLocal } ListElement { group: qsTr("Other") address: "" value: -1 } } delegate: ItemDelegate { width: groupComboBox.width contentItem: Column { Text { text: group } Text { text: address } } highlighted: groupComboBox.highlightedIndex === index } } TextField { id: customGroupField placeholderText: qsTr("<Custom Group>") enabled: groupComboBox.model.get(groupComboBox.currentIndex).value === -1 Layout.fillWidth: true } } Label { text: qsTr("Port:") } TextField { id: portField text: "5683" placeholderText: qsTr("<Port>") inputMethodHints: Qt.ImhDigitsOnly Layout.preferredWidth: 80 } Label { text: qsTr("Discovery Path:") } TextField { id: discoveryPathField text: "/.well-known/core" placeholderText: qsTr("<Resource Discovery Path>") inputMethodHints: Qt.ImhUrlCharactersOnly Layout.fillWidth: true } Button { id: discoverButton text: qsTr("Discover") Layout.columnSpan: 2 onClicked: { var currentGroup = groupComboBox.model.get(groupComboBox.currentIndex).value; var path = ""; if (currentGroup !== - 1) { client.discover(currentGroup, parseInt(portField.text), discoveryPathField.text); path = groupComboBox.currentText; } else { client.discover(customGroupField.text, parseInt(portField.text), discoveryPathField.text); path = customGroupField.text + discoveryPathField.text; } statusLabel.text = qsTr("Discovering resources at %1...").arg(path); } } ListModel { id: resourceModel } ListView { id: resourceView model: resourceModel clip: true Layout.columnSpan: 2 Layout.fillHeight: true Layout.fillWidth: true delegate: Rectangle { width: resourceView.width height: 60 color: "lightgray" border.color: "darkgray" radius: 5 Column { topPadding: 5 leftPadding: 5 Text { text: qsTr('<b>Host:</b> %1').arg(host) } Text { text: qsTr('<b>Resource:</b> %1').arg(path) } Text { text: qsTr('<b>Title:</b> %1').arg(title) } } } } Label { id: statusLabel Layout.columnSpan: 2 Layout.fillWidth: true } } }