node-red-contrib-azure-iothub-service/lib/iothub-send.html

Nodes to communicate with devices via Azure IoT Hub and Event Hubs.

<script type="text/javascript">
    RED.nodes.registerType('iothub-send', {
        category: 'input',
        color: '#0080FF',
        defaults: {
            name: { value: "" },
            connectionstring: { value: "IOTHUB_CONNECTION_STRING" },
            connectionstringType: { value: "env" },
        },
        credentials: {
            connectionstring: { type: "text" },
        },
        inputs: 1,
        outputs: 2,
        icon: "iothub.png",
        outputLabels: ["response", "error"],
        label: function () {
            return this.name || "send to device";
        },
        oneditprepare: function () {
            $('#node-input-connectionstring').typedInput({
                typeField: "#node-input-connectionstringType",
				default: this.connectionstringType,
				types: ['str', 'env', 'cred', 'flow', 'global'],
			});
        },
    });
</script>

<script type="text/x-red" data-template-name="iothub-send">
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
    <div class="form-row">
        <label for="node-input-connectionstring"><i class="icon-tag"></i> IoT Hub Connection String</label>
        <input type="hidden" id="node-input-connectionstringType">
        <input type="text" id="node-input-connectionstring" placeholder="E.g. XXX.azure-devices.net;SharedAccessKeyName=iothubowner;SharedAccessKey=XXX">
    </div>
</script>

<script type="text/x-red" data-help-name="iothub-send">
    <p>A simple node that receives messages from an Azure Event Hub...</p>
    <h3>Inputs</h3>
    <dl class="message-properties">
        <code>deviceId: str</code>
        <b>payload:</b>
        <code>
            {
                "some message": "hi device!"
            }
        </code>
    </dl>

    <h3>Outputs</h3>
    <ol class="node-ports">
        <li>Standard output
            <dl class="message-properties">
                <dt>payload <span class="property-type">object</span></dt>
                <dd>A JSON object, response from IoT Hub. Not a response from the device.</dd>
            </dl>
        </li>
    </ol>
    
    <h3>Details</h3>
    In the node's properties, the connection string of the IoT Hub to which
    you would like to connect, can be specified. Value can be retreived from 
    the Azure Portal.

    <h3>References</h3>
    <ul>
        <li><a href="https://github.com/Azure/azure-iot-hub-node/blob/main/samples/send_c2d_message.js">Cloud 2 Device NodeJS Sample</a></li>
    </ul>
</script>