mirror of https://github.com/node-red/node-red.git
125 lines
3.4 KiB
JavaScript
125 lines
3.4 KiB
JavaScript
/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var RED = require("../../red/red");
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var reconnectTime = RED.settings.socketReconnectTime||10000;
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var net = require('net');
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function TcpOut(n) {
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RED.nodes.createNode(this,n);
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this.host = n.host;
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this.port = n.port * 1;
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this.base64 = n.base64;
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this.beserver = n.beserver;
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this.name = n.name;
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this.closing = false;
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var node = this;
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if (!node.beserver||node.beserver=="client") {
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var reconnectTimeout;
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var client = null;
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var connected = false;
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function setupTcpClient() {
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node.log("connecting to "+node.host+":"+node.port);
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client = net.connect(node.port, node.host, function() {
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connected = true;
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node.log("connected to "+node.host+":"+node.port);
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});
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client.on('error', function (err) {
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node.log('error : '+err);
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});
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client.on('end', function (err) {
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});
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client.on('close', function() {
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node.log("connection lost to "+node.host+":"+node.port);
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connected = false;
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client.destroy();
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if (!node.closing) {
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reconnectTimeout = setTimeout(setupTcpClient,reconnectTime);
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}
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});
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}
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setupTcpClient();
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node.on("input", function(msg) {
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if (connected && msg.payload != null) {
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if (Buffer.isBuffer(msg.payload)) {
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client.write(msg.payload);
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} else if (typeof msg.payload === "string" && node.base64) {
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client.write(new Buffer(msg.payload,'base64'));
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} else {
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client.write(new Buffer(""+msg.payload));
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}
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}
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});
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this._close = function() {
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this.closing = true;
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client.end();
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clearTimeout(reconnectTimeout);
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}
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}
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else {
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var connectedSockets = [];
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var server = net.createServer(function (socket) {
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var remoteDetails = socket.remoteAddress+":"+socket.remotePort;
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node.log("connection from "+remoteDetails);
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connectedSockets.push(socket);
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socket.on('close',function() {
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node.log("connection closed from "+remoteDetails);
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connectedSockets.splice(connectedSockets.indexOf(socket),1);
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});
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});
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node.on("input", function(msg) {
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if (msg.payload != null) {
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var buffer;
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if (Buffer.isBuffer(msg.payload)) {
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buffer = msg.payload;
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} else if (typeof msg.payload === "string" && node.base64) {
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buffer = new Buffer(msg.payload,'base64');
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} else {
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buffer = new Buffer(""+msg.payload);
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}
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for (var i = 0; i<connectedSockets.length;i+=1) {
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connectedSockets[i].write(buffer);
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}
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}
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});
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server.listen(node.port);
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node.log('listening on port '+node.port);
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this._close = function() {
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server.close();
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node.log('stopped listening on port '+node.port);
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}
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}
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}
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RED.nodes.registerType("tcp out",TcpOut);
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TcpOut.prototype.close = function() {
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this._close();
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}
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