node-red/nodes/io/31-tcpin.html

<!--
  Copyright 2013 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.
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<script type="text/x-red" data-template-name="tcp in">
    <div class="form-row">
        <label for="node-input-server"><i class="icon-resize-small"></i> Type</label>
        <select id="node-input-server" style="width:120px; margin-right:5px;">
            <option value="server">Listen on</option>
            <option value="client">Connect to</option>
        </select>
        port <input type="text" id="node-input-port" style="width: 50px">
    </div>
    <div class="form-row hidden" id="node-input-host-row" style="padding-left: 110px;"> 
        at host <input type="text" id="node-input-host" placeholder="localhost" style="width: 40%;">
    </div>

    <div class="form-row">
        <label><i class="icon-th"></i> Output</label>
        a 
        <select id="node-input-datamode" style="width:110px;">
            <option value="stream">stream of</option>
            <option value="single">single</option>
        </select>
        <select id="node-input-datatype" style="width:140px;">
            <option value="buffer">Buffer</option>
            <option value="utf8">String</option>
            <option value="base64">Base64 String</option>
        </select>
        payload<span id="node-input-datamode-plural">s</span>
    </div>

    <div id="node-row-newline" class="form-row hidden" style="padding-left: 110px;">
        delimited by <input type="text" id="node-input-newline" style="width: 110px;">
    </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>
</script>

<script type="text/x-red" data-help-name="tcp in">
	<p>Provides a choice of tcp inputs. Can either connect to a remote tcp port, 
	   or accept incoming connections.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('tcp in',{
        category: 'input',
        color:"Silver",
        defaults: {
            server: {value:"server",required:true},
            host: {value:"",validate:function(v) { return (this.server == "server")||v.length > 0;} },
            port: {value:"",required:true,validate:RED.validators.number()},
            datamode:{value:"stream"},
            datatype:{value:"buffer"},
            newline:{value:""},
            topic: {value:""},
            name: {value:""},
            base64: {/*deprecated*/ value:false,required:true}
        },
        inputs:0,
        outputs:1,
        icon: "bridge-dash.png",
        label: function() {
            return this.name || "tcp:"+(this.host?this.host+":":"")+this.port;
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        },
        oneditprepare: function() {
            var updateOptions = function() {
                var sockettype = $("#node-input-server option:selected").val();
                if (sockettype == "client") {
                    $("#node-input-host-row").show();
                } else {
                    $("#node-input-host-row").hide();
                }
                var datamode = $("#node-input-datamode option:selected").val();
                var datatype = $("#node-input-datatype option:selected").val();
                if (datamode == "stream") {
                    $("#node-input-datamode-plural").show();
                    if (datatype == "utf8") {
                        $("#node-row-newline").show();
                    } else {
                        $("#node-row-newline").hide();
                    }
                } else {
                    $("#node-input-datamode-plural").hide();
                    $("#node-row-newline").hide();
                }
            };
            updateOptions();
            $("#node-input-server").change(updateOptions);
            $("#node-input-datatype").change(updateOptions);
            $("#node-input-datamode").change(updateOptions);
        }
    });
</script>