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57 lines
3.2 KiB
HTML
57 lines
3.2 KiB
HTML
<script type="text/html" data-help-name="ping">
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<p>Pings a machine and returns the trip time in mS as <code>msg.payload</code>.</p>
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<h3>Output</h3>
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<dl class="message-properties">
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<dt>payload <span class="property-type">number</span></dt>
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<dd> the trip time in mS, or boolean <i>false</i> if no response.</dd>
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<dt>topic <span class="property-type">string</span></dt>
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<dd> the target host or ip address.</dd>
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<dt>[ping] <span class="property-type">object</span></dt>
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<dd> an object containing <code>host</code> and any other properties sent in the array object.<br>
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<b>Note</b>: This object is only appended when using triggered mode and an array for input payload. It is
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intended for advanced users and permits scenarios where you need additional properties to be tagged into your result for use downstream.</dd>
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</dl>
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<h3>Details</h3>
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<p>Returns <b>false</b> if no response received, or if the host is unresolveable.</p>
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<p>Default ping is every 20 seconds but can be configured.</p>
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<h4>Mode...</h4>
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<ul>
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<li><b>Timed</b><br>
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<P>In Timed mode, the fields <code>Target</code> and <code>Ping (S)</code> must be populated.</P>
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<p>Target must be a CSV list of hosts / IPs e.g. <code>"192.168.0.1"</code> or <code>"192.168.0.1, www.google.com"</code></p>
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<p>Ping (S) is the number of seconds between pings</p>
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</li>
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<li><b>Triggered</b><br>
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<p>In Triggered mode, you must connect an input wire and pass a <code>msg</code> in to trigger the ping operation.</p>
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<p>If <code>Target</code> is populated, this will be used as the host/ip. The Target must be is a CSV list of
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hosts / IPs e.g. <code>"192.168.0.1"</code> or <code>"192.168.0.1, www.google.com"</code></p>
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<p>If Target is left empty, you can pass a CSV string or an array of hosts in <code>msg.payload</code>.
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<ul>
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<li><b>string</b> - a CSV list of hosts / IPs e.g. <code>"192.168.0.1"</code> or <code>"192.168.0.1, www.google.com"</code> </li>
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<li><b>array</b> - an array of hosts as strings or objects. <b>Note</b>: The object must contain at minimum <code>.host</code>.
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Optionally, you can add a <code>timeout</code> property between 1000 & 30000 (default is 5000 / 5 seconds).
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Additionally, you can add whatever other properties you wish to this object and when the ping result is returned, it will
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be passed to the next node in <code>msg.ping</code> for use downstream</li>
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<li>Example array payload input: <pre>[
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"192.168.0.99",
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{
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"host":"192.168.0.1",
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"name":"The router"
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},
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{
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"host":"myapiserver.com",
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"name":"external API",
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"timeout": 20000,
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"support":"support@myapiserver.com"
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}
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]</pre> </li>
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</ul>
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</p>
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</li>
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</ul>
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<p><b>Note</b>: if running inside Ubuntu Snap you will need to manually start the network-observe interface.
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<code>snap connect node-red:network-observe</code>.</p>
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</script>
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