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node-red-nodes/io/mdns/mdns.html

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<!--
Copyright 2015 IBM Corp.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<script type="text/x-red" data-template-name="discovery">
<div class="form-row">
<label for="node-input-service"><i class="icon-gear"></i> Service</label>
<input type="text" id="node-input-service" placeholder="_http._tcp">
</div>
<div class="form-row">
<label for="node-input-topic"><i class="icon-tasks"></i> Topic</label>
<input type="text" id="node-input-topic" placeholder="Topic">
</div>
<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-tips">The service <i>must</i> start with an underscore _ and end ._tcp or ._udp</div>
</script>
<script type="text/x-red" data-help-name="discovery">
<p>Provides a Bonjour / Avahi / Zeroconf discovery node.</p>
<p><b>msg.payload</b> contains the service object on both arrival and leaving.</p>
<p><b>msg.state</b> contains boolean true or false depending if the service has arrived (true) or gone away (false).</p>
<p>Within the msg.payload object the most interesting things are:
<ul><li>msg.payload.name</li>
<li>msg.payload.interface</li>
<li>msg.payload.port</li>
<li>msg.payload.addresses</li>
<li>msg.payload.txtRecord</li></ul></p>
<p>For a full list of official service types see <i><a href="http://www.dns-sd.org/ServiceTypes.html" target="_new">this list</a></i>.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('discovery',{
category: 'network-input',
color:"palegoldenrod",
defaults: {
name: {value:""},
topic: {value:""},
service: {value:"",required:true,validate:RED.validators.regex(/^_.*\._(tc|ud)p$/)}
},
inputs:0,
outputs:1,
icon: "bonjour.png",
label: function() {
return this.name||this.service||"discovery";
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>