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="icon-tasks"></i> Method</label>
        <select type="text" id="node-input-method" style="width: 150px;">
        <option value="get">GET</option>
        <option value="post">POST</option>
        <option value="put">PUT</option>
        <option value="delete">DELETE</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-topic"><i class="icon-globe"></i> url</label>
        <input type="text" id="node-input-url" placeholder="/url">
    </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 id="node-input-tip" class="form-tips">The url will be relative to <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, or Function node.
	   In the case of a Function node, the <a href="http://expressjs.com/api.html#res">Express response documentation</a>
	   describes how this should be done. For example:
	   <pre>msg.res.send(200, 'Thanks for the request ');<br/>return msg;</pre>
    </p>

</script>

<script type="text/x-red" data-template-name="http response">
    <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 messages sent to this node <b>must</b> originate from an <i>http input</i> node</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 reponse</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>
	</ul>
</script>

<script type="text/x-red" data-template-name="http request">
    <div class="form-row">
        <label for="node-input-method"><i class="icon-tasks"></i> Method</label>
        <select type="text" id="node-input-method" style="width: 150px;">
        <option value="GET">GET</option>
        <option value="POST">POST</option>
        <option value="PUT">PUT</option>
        <option value="DELETE">DELETE</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-url"><i class="icon-tasks"></i> URL</label>
        <input type="text" id="node-input-url" placeholder="http://">
    </div>
    <div class="form-row">
        <label>&nbsp;</label>
        <input type="checkbox" id="node-input-useAuth" style="display: inline-block; width: auto; vertical-align: top;">
        <label for="node-input-useAuth" style="width: 70%;">Use basic authentication?</label>
    </div>
    <div class="form-row node-input-useAuth-row">
        <label for="node-config-input-user"><i class="icon-user"></i> Username</label>
        <input type="text" id="node-config-input-user">
    </div>
    <div class="form-row node-input-useAuth-row">
        <label for="node-config-input-pass"><i class="icon-lock"></i> Password</label>
        <input type="password" id="node-config-input-pass">
    </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="http request">
	<p>Provides a node for making http requests.</p>
	<p>The URL and HTTP method can be configured in the node, but also
	   overridden by the incoming message:
	<ul>
	    <li><code>url</code>, if set, is used as the url of the request</li>
	    <li><code>method</code>, if set, is used as the HTTP method of the request. Must be one of <code>GET</code>, <code>PUT</code>, <code>POST</code> or <code>DELETE</code> (default: GET)</li>
	    <li><code>headers</code>, if set, should be an object containing field/value
	    pairs to be added as request headers</li>
	    <li><code>payload</code> is sent as the body of the request</li>
	</ul>
	<p>When configured within the node, the URL property can contain <a href="http://mustache.github.io/mustache.5.html" target="_new">mustache-style</a> tags. These allow the
	url to be constructed using values of the incoming message. For example, if the url is set to
	<code>example.com/{{topic}}</code>, it will have the value of <code>msg.topic</code> automatically inserted.</p>
	<p>
	The output message contains the following properties:
	<ul>
	    <li><code>payload</code> is the body of the response</li>
	    <li><code>statusCode</code> is the status code of the response, or the error code if the request could not be completed</li>
	    <li><code>headers</code> is an object containing the response headers</li>
	</ul>
</script>

<script type="text/javascript">
    RED.nodes.registerType('http in',{
        category: 'input',
        color:"rgb(231, 231, 174)",
        defaults: {
            name: {value:""},
            url: {value:"",required:true},
            method: {value:"get",required:true}
        },
        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.slice(0,-1);
                root += this.url;
                return "["+this.method+"] "+root;
            } else {
                return "http";
            }
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        },
        oneditprepare: function() {
            var root = RED.settings.httpNodeRoot.slice(0,-1);
            if (root == "") {
                $("#node-input-tip").hide();
            } else {
                $("#node-input-path").html(root);
                $("#node-input-tip").show();
            }
            //document.getElementById("node-config-wsdocpath").innerHTML=
        }

    });
    
    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":"";
        }
    });
    
    RED.nodes.registerType('http request',{
        category: 'function',
        color:"rgb(231, 231, 174)",
        defaults: {
            name: {value:""},
            method:{value:"GET"},
            url:{value:""},
            //user -> credentials
            //pass -> credentials
        },
        inputs:1,
        outputs:1,
        align: "right",
        icon: "white-globe.png",
        label: function() {
            return this.name||"http request";
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        },
        oneditprepare: function() {
            $.getJSON('http-request/'+this.id,function(data) {
                if (data.user) {
                    $('#node-input-useAuth').prop('checked', true);
                    $(".node-input-useAuth-row").show();
                    $('#node-config-input-user').data("v",data.user);
                    $('#node-config-input-user').val(data.user);
                } else {
                    $('#node-input-useAuth').prop('checked', false);
                    $(".node-input-useAuth-row").hide();
                    $('#node-config-input-user').data("v",'');
                }
                if (data.hasPassword) {
                    $('#node-input-useAuth').prop('checked', true);
                    $(".node-input-useAuth-row").show();
                    $('#node-config-input-pass').data("v",'__PWRD__');
                    $('#node-config-input-pass').val('__PWRD__');
                } else {
                    $('#node-config-input-pass').data("v",'');
                    $('#node-config-input-pass').val('');
                }

            });
            
            $("#node-input-useAuth").change(function() {
                if ($(this).is(":checked")) {
                    $(".node-input-useAuth-row").show();
                } else {
                    $(".node-input-useAuth-row").hide();
                }
            });
        },
        oneditsave: function() {
            var oldUser = $('#node-config-input-user').data("v");
            var oldPass = $('#node-config-input-pass').data("v");
            var newUser = $('#node-config-input-user').val();
            var newPass = $('#node-config-input-pass').val();
            
            if (!$("#node-input-useAuth").is(":checked")) {
                newUser = "";
                newPass = "";
            }
            
            if (oldUser != newUser || oldPass != newPass) {
                if (newUser == "" && newPass == "") {
                    $.ajax({
                        url: 'http-request/'+this.id,
                        type: 'DELETE',
                        success: function(result) {}
                    });
                } else {
                    var credentials = {};
                    credentials.user = newUser;
                    if (newPass != '__PWRD__') {
                        credentials.password = newPass;
                    }
                    $.ajax({
                        url: 'http-request/'+this.id,
                        type: 'POST',
                        data: credentials,
                        success:function(result){}
                    });
                }
                return true;
            }
        }
    });
</script>