node-red/nodes/core/io/21-httpin.html

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<script type="text/x-red" data-template-name="http in">
    <div class="form-row">
        <label for="node-input-method"><i class="fa fa-tasks"></i> <span data-i18n="httpin.label.method"></span></label>
        <select type="text" id="node-input-method" style="width:70%;">
        <option value="get">GET</option>
        <option value="post">POST</option>
        <option value="put">PUT</option>
        <option value="delete">DELETE</option>
        <option value="patch">PATCH</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-url"><i class="fa fa-globe"></i> <span data-i18n="httpin.label.url"></span></label>
        <div id="node-input-url" contenteditable="true" placeholder="/url"></div>
    </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>
    <div class="form-row row-swagger-doc">
        <label for="node-input-swaggerDoc"><i class="fa fa-file-text-o"></i> <span data-i18n="httpin.label.doc"></span></label>
        <input type="text" id="node-input-swaggerDoc">
    </div>
    <div id="node-input-tip" class="form-tips"><span data-i18n="httpin.tip.in"></span><code><span id="node-input-path"></span></code>.</div>
</script>

<script type="text/x-red" data-help-name="http in">
    <p>Provides an input node for http requests, allowing the creation of simple web services.</p>
    <p>The resulting message has the following properties:
        <ul>
            <li>msg.req : <a href="http://expressjs.com/api.html#req">http request</a></li>
            <li>msg.res : <a href="http://expressjs.com/api.html#res">http response</a></li>
        </ul>
    </p>
    <p>For POST/PUT requests, the body is available under <code>msg.req.body</code>. This
       uses the <a href="http://expressjs.com/api.html#bodyParser">Express bodyParser middleware</a> to parse the content to a JSON object.
    </p>
    <p>
       By default, this expects the body of the request to be url encoded:
       <pre>foo=bar&amp;this=that</pre>
    </p>
    <p>
       To send JSON encoded data to the node, the content-type header of the request must be set to
       <code>application/json</code>.
    </p>
    <p>
       <b>Note: </b>This node does not send any response to the http request.
       This should be done with a subsequent HTTP Response node.
    </p>

</script>

<script type="text/x-red" data-template-name="http response">
    <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>
    <div class="form-tips"><span data-i18n="[html]httpin.tip.res"></span></div>
</script>

<script type="text/x-red" data-help-name="http response">
    <p>Sends responses back to http requests received from an HTTP Input node.</p>
    <p>The response can be customised using the following message properties:</p>
    <ul>
        <li><code>payload</code> is sent as the body of the response</li>
        <li><code>statusCode</code>, if set, is used as the response status code (default: 200)</li>
        <li><code>headers</code>, if set, should be an object containing field/value
        pairs to be added as response headers.</li>
        <li><code>cookies</code>, if set, can be used to set or delete cookies.
    </ul>
    <h3>Cookie handling</h3>
    <p>The <code>cookies</code> property must be an object of name/value pairs.
    The value can be either a string to set the value of the cookie with default
    options, or it can be an object of options.<p>
    <p>The following example sets two cookies - one called <code>name</code> with
    a value of <code>nick</code>, the other called <code>session</code> with a
    value of <code>1234</code> and an expiry set to 15 minutes.</p>
    <pre>
msg.cookies = {
    name: 'nick',
    session: {
        value: '1234',
        maxAge: 900000
    }
}</pre>
    <p>The valid options include:</p>
    <ul>
    <li><code>domain</code> - (String) domain name for the cookie</li>
    <li><code>expires</code> - (Date) expiry date in GMT. If not specified or set to 0, creates a session cookie</li>
    <li><code>maxAge</code> - (String) expiry date as relative to the current time in milliseconds</li>
    <li><code>path</code> - (String) path for the cookie. Defaults to /</li>
    <li><code>value</code> - (String) the value to use for the cookie</li>
    </ul>
    <p>To delete a cookie, set its <code>value</code> to <code>null</code>.</p>

</script>

<script type="text/javascript">
    RED.nodes.registerType('http in',{
        category: 'input',
        color:"rgb(231, 231, 174)",
        defaults: {
            name: {value:""},
            url: {value:"",required:true,format:"url"},
            method: {value:"get",required:true},
            swaggerDoc: {type:"swagger-doc", required:false}
        },
        inputs:0,
        outputs:1,
        icon: "white-globe.png",
        label: function() {
            if (this.name) {
                return this.name;
            } else if (this.url) {
                var root = RED.settings.httpNodeRoot;
                if (root.slice(-1) != "/") {
                    root = root+"/";
                }
                if (this.url.charAt(0) == "/") {
                    root += this.url.slice(1);
                } else {
                    root += this.url;
                }
                return RED.text.format.getString("["+this.method+"] "+root, "url", {}, false, "en");
            } else {
                return "http";
            }
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        },
        oneditprepare: function() {
            var root = RED.settings.httpNodeRoot;
            if (root.slice(-1) == "/") {
                root = root.slice(0,-1);
            }
            if (root == "") {
                $("#node-input-tip").hide();
            } else {
                $("#node-input-path").html(root);
                $("#node-input-tip").show();
            }
            if(!RED.nodes.getType("swagger-doc")){
                $('.row-swagger-doc').hide();
            }
        }

    });

    RED.nodes.registerType('http response',{
        category: 'output',
        color:"rgb(231, 231, 174)",
        defaults: {
            name: {value:""}
        },
        inputs:1,
        outputs:0,
        align: "right",
        icon: "white-globe.png",
        label: function() {
            return this.name||"http";
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        }
    });
</script>