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

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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="fa fa-dot-circle-o"></i> <span data-i18n="tcpin.label.type"></span></label>
        <select id="node-input-server" style="width:120px; margin-right:5px;">
            <option value="server" data-i18n="tcpin.type.listen"></option>
            <option value="client" data-i18n="tcpin.type.connect"></option>
        </select>
        <span data-i18n="tcpin.label.port"></span> <input type="text" id="node-input-port" style="width: 65px">
    </div>
    <div class="form-row hidden" id="node-input-host-row" style="padding-left: 110px;">
        <span data-i18n="tcpin.label.host"></span> <input type="text" id="node-input-host" placeholder="localhost" style="width: 60%;">
    </div>

    <div class="form-row">
        <label><i class="fa fa-sign-out"></i> <span data-i18n="tcpin.label.output"></span></label>
        <select id="node-input-datamode" style="width:110px;">
            <option value="stream" data-i18n="tcpin.output.stream"></option>
            <option value="single" data-i18n="tcpin.output.single"></option>
        </select>
        <select id="node-input-datatype" style="width:140px;">
            <option value="buffer" data-i18n="tcpin.output.buffer"></option>
            <option value="utf8" data-i18n="tcpin.output.string"></option>
            <option value="base64" data-i18n="tcpin.output.base64"></option>
        </select>
        <span data-i18n="tcpin.label.payload"></span>
    </div>

    <div id="node-row-newline" class="form-row hidden" style="padding-left: 110px;">
        <span data-i18n="tcpin.label.delimited"></span> <input type="text" id="node-input-newline" style="width: 110px;">
    </div>

    <div class="form-row">
        <label for="node-input-topic"><i class="fa fa-tasks"></i> <span data-i18n="common.label.topic"></span></label>
        <input type="text" id="node-input-topic" data-i18n="[placeholder]common.label.topic">
    </div>
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
        <input type="text" id="node-input-name" data-i18n="[placeholder]common.label.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>
    <p><b>Note: </b>On some systems you may need root or administrator access
    to access ports below 1024.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('tcp in',{
        category: 'input',
        color:"Silver",
        defaults: {
            name: {value:""},
            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:""},
            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").val();
                if (sockettype == "client") {
                    $("#node-input-host-row").show();
                } else {
                    $("#node-input-host-row").hide();
                }
                var datamode = $("#node-input-datamode").val();
                var datatype = $("#node-input-datatype").val();
                if (datamode == "stream") {
                    if (datatype == "utf8") {
                        $("#node-row-newline").show();
                    } else {
                        $("#node-row-newline").hide();
                    }
                } else {
                    $("#node-row-newline").hide();
                }
            };
            updateOptions();
            $("#node-input-server").change(updateOptions);
            $("#node-input-datatype").change(updateOptions);
            $("#node-input-datamode").change(updateOptions);
        }
    });
</script>


<script type="text/x-red" data-template-name="tcp out">
    <div class="form-row">
        <label for="node-input-beserver"><i class="fa fa-dot-circle-o"></i> <span data-i18n="tcpin.label.type"></span></label>
        <select id="node-input-beserver" style="width:150px; margin-right:5px;">
            <option value="server" data-i18n="tcpin.type.listen"></option>
            <option value="client" data-i18n="tcpin.type.connect"></option>
            <option value="reply" data-i18n="tcpin.type.reply"></option>
        </select>
        <span id="node-input-port-row"><span data-i18n="tcpin.label.port"></span> <input type="text" id="node-input-port" style="width: 65px"></span>
    </div>

    <div class="form-row hidden" id="node-input-host-row" style="padding-left: 110px;">
        <span data-i18n="tcpin.label.host"></span> <input type="text" id="node-input-host" style="width: 60%;">
    </div>

    <div class="form-row hidden" id="node-input-end-row">
        <label>&nbsp;</label>
        <input type="checkbox" id="node-input-end" style="display: inline-block; width: auto; vertical-align: top;">
        <label for="node-input-end" style="width: 70%;"><span data-i18n="tcpin.label.close-connection"></span></label>
    </div>

    <div class="form-row">
        <label>&nbsp;</label>
        <input type="checkbox" id="node-input-base64" placeholder="base64" style="display: inline-block; width: auto; vertical-align: top;">
        <label for="node-input-base64" style="width: 70%;"><span data-i18n="tcpin.label.decode-base64"></span></label>
    </div>

    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
        <input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
    </div>
</script>

<script type="text/x-red" data-help-name="tcp out">
    <p>Provides a choice of TCP outputs. Can either connect to a remote TCP port,
    accept incoming connections, or reply to messages received from a TCP In node.</p>
    <p>Only the <code>msg.payload</code> is sent.</p>
    <p>If <code>msg.payload</code> is a string containing a Base64 encoding of binary
    data, the Base64 decoding option will cause it to be converted back to binary
    before being sent.</p>
    <p>If <code>msg._session</code> is not present the payload is
    sent to <b>all</b> connected clients.</p>
    <p><b>Note: </b>On some systems you may need root or administrator access
    to access ports below 1024.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('tcp out',{
        category: 'output',
        color:"Silver",
        defaults: {
            host: {value:"",validate:function(v) { return (this.beserver != "client")||v.length > 0;} },
            port: {value:"",validate:function(v) { return (this.beserver == "reply")||RED.validators.number()(v); } },
            beserver: {value:"client",required:true},
            base64: {value:false,required:true},
            end: {value:false,required:true},
            name: {value:""}
        },
        inputs:1,
        outputs:0,
        icon: "bridge-dash.png",
        align: "right",
        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-beserver").val();
                if (sockettype == "reply") {
                    $("#node-input-port-row").hide();
                    $("#node-input-host-row").hide();
                    $("#node-input-end-row").hide();
                } else {
                    $("#node-input-port-row").show();
                    $("#node-input-end-row").show();
                }

                if (sockettype == "client") {
                    $("#node-input-host-row").show();
                } else {
                    $("#node-input-host-row").hide();
                }
            };
            updateOptions();
            $("#node-input-beserver").change(updateOptions);
        }
    });
</script>


<script type="text/x-red" data-template-name="tcp request">
    <div class="form-row">
        <label for="node-input-server"><i class="fa fa-globe"></i> <span data-i18n="tcpin.label.server"></span></label>
        <input type="text" id="node-input-server" placeholder="ip.address" style="width:45%">
        &nbsp;port <input type="text" id="node-input-port" style="width:60px">
    </div>
    <div class="form-row">
        <label for="node-input-out"><i class="fa fa-sign-out"></i> <span data-i18n="tcpin.label.return"></span></label>
        <select type="text" id="node-input-out" style="width:56%;">
            <option value="time" data-i18n="tcpin.return.timeout"></option>
            <option value="char" data-i18n="tcpin.return.character"></option>
            <option value="count" data-i18n="tcpin.return.number"></option>
            <option value="sit" data-i18n="tcpin.return.never"></option>
            <option value="immed" data-i18n="tcpin.return.immed"></option>
        </select>
        <input type="text" id="node-input-splitc" style="width:50px;">
        <span id="node-units"></span>
    </div>
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
        <input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
    </div>
</script>

<script type="text/x-red" data-help-name="tcp request">
    <p>A simple TCP request node - sends the <code>msg.payload</code> to a server tcp port and expects a response.</p>
    <p>Connects, sends the "request", and reads the "response". It can either count a number of
    returned characters into a fixed buffer, match a specified character before returning,
    wait a fixed timeout from first reply and then return, sit and wait for data, or send then close the connection
    immediately, without waiting for a reply.</p>
    <p>The response will be output in <code>msg.payload</code> as a buffer, so you may want to .toString() it.</p>
    <p>If you leave tcp host or port blank they must be set by using the <code>msg.host</code> and <code>msg.port</code> properties.</p>
    <p><b>Note: </b>Setting a timeout of 0 mS will return immediately and close the connection, without waiting for any reply.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('tcp request',{
        category: 'function',
        color:"Silver",
        defaults: {
            server: {value:""},
            port: {value:"",validate:RED.validators.regex(/^( \d*|)$/)},
            out: {value:"time",required:true},
            splitc: {value:"0",required:true},
            name: {value:""}
        },
        inputs:1,
        outputs:1,
        icon: "bridge-dash.png",
        label: function() {
            return this.name || "tcp:"+(this.server?this.server+":":"")+this.port;
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        },
        oneditprepare: function() {
            var previous = null;
            $("#node-input-out").on('focus', function () { previous = this.value; }).change(function() {
                if (previous === null) { previous = $("#node-input-out").val(); }
                if ($("#node-input-out").val() == "char") {
                    if (previous != "char") { $("#node-input-splitc").val("\\n"); }
                    $("#node-units").text("");
                }
                else if ($("#node-input-out").val() == "time") {
                    if (previous != "time") { $("#node-input-splitc").val("0"); }
                    $("#node-units").text("ms");
                }
                else if ($("#node-input-out").val() == "immed") {
                    if (previous != "immed") { $("#node-input-splitc").val(" "); }
                    $("#node-units").text("");
                }
                else if ($("#node-input-out").val() == "count") {
                    if (previous != "count") { $("#node-input-splitc").val("12"); }
                    $("#node-units").text("chars");
                }
                else {
                    if (previous != "sit") { $("#node-input-splitc").val("0"); }
                    $("#node-units").text("");
                }
            });
        }
    });
</script>