mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
Add WebSocket nodes
This commit is contained in:
Nicholas O'Leary
parent
7463ef92cb
commit
88be896f1c
130
nodes/core/io/22-websocket.html
Normal file
130
nodes/core/io/22-websocket.html
Normal file
@ -0,0 +1,130 @@
|
||||
<!--
|
||||
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.
|
||||
-->
|
||||
|
||||
<!-- WebSocket Input Node -->
|
||||
<script type="text/x-red" data-template-name="websocket in">
|
||||
<div class="form-row">
|
||||
<label for="node-input-server"><i class="icon-bookmark"></i> Path</label>
|
||||
<input type="text" id="node-input-server">
|
||||
</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="websocket in">
|
||||
<p>WebSocket input node. Uses the specified server configuration and outputs in response to a <i>'message'</i> event.</p>
|
||||
<p>Outputs an object called <b>msg</b> containing <b>msg.payload</b>.</p>
|
||||
</script>
|
||||
|
||||
<script type="text/javascript">
|
||||
RED.nodes.registerType('websocket in',{
|
||||
category: 'input',
|
||||
defaults: {
|
||||
name: {value:""},
|
||||
server: {type:"websocket-listener"}
|
||||
},
|
||||
color:"rgb(215, 215, 160)",
|
||||
inputs:0,
|
||||
outputs:1,
|
||||
icon: "white-globe.png",
|
||||
label: function() {
|
||||
var wsNode = RED.nodes.node(this.server);
|
||||
return this.name||(wsNode?"[ws] "+wsNode.label():"websocket");
|
||||
},
|
||||
labelStyle: function() {
|
||||
return this.name?"node_label_italic":"";
|
||||
}
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- WebSocket out Node -->
|
||||
<script type="text/x-red" data-template-name="websocket out">
|
||||
<div class="form-row">
|
||||
<label for="node-input-server"><i class="icon-bookmark"></i> Path</label>
|
||||
<input type="text" id="node-input-server">
|
||||
</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="websocket out">
|
||||
<p>WebSocket out node. Uses the specified server configuration to send the <b>msg.payload</b> to connected clients.</p>
|
||||
</script>
|
||||
|
||||
<script type="text/javascript">
|
||||
RED.nodes.registerType('websocket out',{
|
||||
category: 'output',
|
||||
defaults: {
|
||||
name: {value:""},
|
||||
server: {type:"websocket-listener", required:true}
|
||||
},
|
||||
color:"rgb(215, 215, 160)",
|
||||
inputs:1,
|
||||
outputs:0,
|
||||
icon: "white-globe.png",
|
||||
align: "right",
|
||||
label: function() {
|
||||
var wsNode = RED.nodes.node(this.server);
|
||||
return this.name||(wsNode?"[ws] "+wsNode.label():"websocket");
|
||||
},
|
||||
labelStyle: function() {
|
||||
return this.name?"node_label_italic":"";
|
||||
}
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- WebSocket Server configuration node -->
|
||||
<script type="text/x-red" data-template-name="websocket-listener">
|
||||
<div class="form-row">
|
||||
<label for="node-config-input-path"><i class="icon-bookmark"></i> Path</label>
|
||||
<input type="text" id="node-config-input-path" placeholder="/ws/example">
|
||||
</div>
|
||||
<div id="node-config-ws-tip" class="form-tips">This path will be relative to <code><span id="node-config-ws-path"></span></code>.</div>
|
||||
</script>
|
||||
|
||||
<script type="text/x-red" data-help-name="websocket-listener">
|
||||
<p>This configuration node creates a WebSocket Server using the specified path</p>
|
||||
</script>
|
||||
|
||||
<script type="text/javascript">
|
||||
RED.nodes.registerType('websocket-listener',{
|
||||
category: 'config',
|
||||
defaults: {
|
||||
path: {value:"",required:true,validate:RED.validators.regex(/^((?!\/debug\/ws).)*$/) }
|
||||
},
|
||||
inputs:0,
|
||||
outputs:0,
|
||||
label: function() {
|
||||
var root = document.location.pathname.slice(0,-1);
|
||||
root += this.path;
|
||||
return root;
|
||||
},
|
||||
oneditprepare: function() {
|
||||
var root = document.location.pathname.slice(0,-1);
|
||||
if (root == "") {
|
||||
$("#node-config-ws-tip").hide();
|
||||
} else {
|
||||
$("#node-config-ws-path").html(root);
|
||||
$("#node-config-ws-tip").show();
|
||||
}
|
||||
//document.getElementById("node-config-wsdocpath").innerHTML=
|
||||
}
|
||||
});
|
||||
</script>
|
||||
124
nodes/core/io/22-websocket.js
Normal file
124
nodes/core/io/22-websocket.js
Normal file
@ -0,0 +1,124 @@
|
||||
/**
|
||||
* 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.
|
||||
**/
|
||||
|
||||
// Require main module
|
||||
var RED = require(process.env.NODE_RED_HOME+"/red/red"),
|
||||
ws = require("ws"),
|
||||
inspect = require("sys").inspect;
|
||||
|
||||
// A node red node that sets up a local websocket server
|
||||
function WebSocketListenerNode(n) {
|
||||
// Create a RED node
|
||||
RED.nodes.createNode(this,n);
|
||||
|
||||
var node = this;
|
||||
|
||||
// Store local copies of the node configuration (as defined in the .html)
|
||||
node.path = n.path;
|
||||
node._inputNodes = []; // collection of nodes that want to receive events
|
||||
|
||||
var path = RED.settings.httpRoot || "/";
|
||||
path = path + (path.slice(-1) == "/" ? "":"/") + (node.path.charAt(0) == "/" ? node.path.substring(1) : node.path);
|
||||
|
||||
// Workaround https://github.com/einaros/ws/pull/253
|
||||
// Listen for 'newListener' events from RED.server
|
||||
node._serverListeners = {};
|
||||
|
||||
var storeListener = function(/*String*/event,/*function*/listener){
|
||||
if(event == "error" || event == "upgrade" || event == "listening"){
|
||||
node._serverListeners[event] = listener;
|
||||
}
|
||||
}
|
||||
|
||||
RED.server.addListener('newListener',storeListener);
|
||||
|
||||
// Create a WebSocket Server
|
||||
node.server = new ws.Server({server:RED.server,path:path});
|
||||
|
||||
// Workaround https://github.com/einaros/ws/pull/253
|
||||
// Stop listening for new listener events
|
||||
RED.server.removeListener('newListener',storeListener);
|
||||
|
||||
node.server.on('connection', function(socket){
|
||||
socket.on('message',function(data,flags){
|
||||
node.handleEvent(socket,'message',data,flags);
|
||||
});
|
||||
});
|
||||
|
||||
node.on("close", function() {
|
||||
// Workaround https://github.com/einaros/ws/pull/253
|
||||
// Remove listeners from RED.server
|
||||
var listener = null;
|
||||
for(var event in node._serverListeners){
|
||||
listener = node._serverListeners[event];
|
||||
if(typeof listener === "function"){
|
||||
RED.server.removeListener(event,listener);
|
||||
}
|
||||
}
|
||||
node._serverListeners = {};
|
||||
|
||||
node.server.close();
|
||||
node._inputNodes = [];
|
||||
});
|
||||
}
|
||||
RED.nodes.registerType("websocket-listener",WebSocketListenerNode);
|
||||
|
||||
WebSocketListenerNode.prototype.registerInputNode = function(/*Node*/handler){
|
||||
this._inputNodes.push(handler);
|
||||
}
|
||||
|
||||
WebSocketListenerNode.prototype.handleEvent = function(/*socket*/socket,/*String*/event,/*Object*/data,/*Object*/flags){
|
||||
for (var i = 0; i < this._inputNodes.length; i++) {
|
||||
this._inputNodes[i].send({payload:data});
|
||||
};
|
||||
}
|
||||
|
||||
WebSocketListenerNode.prototype.broadcast = function(data){
|
||||
for(var i in this.server.clients){
|
||||
this.server.clients[i].send(data);
|
||||
};
|
||||
}
|
||||
|
||||
function WebSocketInNode(n) {
|
||||
RED.nodes.createNode(this,n);
|
||||
this.server = n.server;
|
||||
var node = this;
|
||||
this.serverConfig = RED.nodes.getNode(this.server);
|
||||
if (this.serverConfig) {
|
||||
this.serverConfig.registerInputNode(this);
|
||||
} else {
|
||||
this.error("Missing server configuration");
|
||||
}
|
||||
}
|
||||
RED.nodes.registerType("websocket in",WebSocketInNode);
|
||||
|
||||
function WebSocketOutNode(n) {
|
||||
RED.nodes.createNode(this,n);
|
||||
var node = this;
|
||||
this.server = n.server;
|
||||
this.serverConfig = RED.nodes.getNode(this.server);
|
||||
if (!this.serverConfig) {
|
||||
this.error("Missing server configuration");
|
||||
}
|
||||
this.on("input", function(msg) {
|
||||
node.serverConfig.broadcast(msg.payload,function(error){
|
||||
if(!!error){
|
||||
node.warn("An error occurred while sending:" + inspect(error));
|
||||
}
|
||||
});
|
||||
});
|
||||
}
|
||||
RED.nodes.registerType("websocket out",WebSocketOutNode);
|
||||
Loading…
Reference in New Issue
Block a user