mirror of https://github.com/node-red/node-red.git
135 lines
3.4 KiB
JavaScript
135 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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function SocketIn(n) {
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RED.nodes.createNode(this,n);
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this.port = n.port;
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this.topic = n.topic;
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this.trans = (n.transport||n.trans||"").toLowerCase();
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var node = this;
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if (this.trans == "http") {
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var http = require('http');
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var serv = http.createServer(function (req, res) {
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//node.log("http "+req.url);
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var msg = {topic:node.topic,payload:req.url.slice(1)};
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node.send(msg);
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res.writeHead(304, {'Content-Type': 'text/plain'});
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res.end('\n');
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}).listen(node.port);
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node.log('http listener at http://127.0.0.1:'+node.port+'/');
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this._close = function() {
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serv.close();
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node.log('http listener stopped');
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}
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}
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if (this.trans == "tcp") {
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var net = require('net');
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var server = net.createServer(function (socket) {
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var buffer = null;
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socket.on('data', function (chunk) {
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if (buffer == null) {
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buffer = chunk;
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} else {
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buffer = Buffer.concat([buffer,chunk]);
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}
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});
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socket.on('end', function() {
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var msg = {topic:node.topic, payload:buffer, fromip:socket.remoteAddress+':'+socket.remotePort};
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node.send(msg);
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});
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});
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server.listen(node.port);
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node.log('tcp listener on port :'+node.port+'/');
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this._close = function() {
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server.close();
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node.log('tcp listener stopped');
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}
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}
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if (this.trans == "tcpc") {
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var net = require('net');
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var client;
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var to;
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function setupTcpClient() {
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node.log('tcpc connecting to port :'+node.port);
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client = net.connect({port: node.port}, function() {
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node.log("tcpc connected");
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});
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client.on('data', function (data) {
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var msg = {topic:node.topic, payload:data};
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node.send(msg);
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});
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client.on('end', function() {
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node.log("tcpc socket ended");
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});
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client.on('close', function() {
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node.log('tcpc socket closed');
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to = setTimeout(setupTcpClient, 10000); //Try to reconnect
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});
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client.on('error', function() {
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node.log('tcpc socket error');
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to = setTimeout(setupTcpClient, 10000); //Try to reconnect
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});
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}
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setupTcpClient();
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this._close = function() {
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client.end();
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//client.destroy();
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clearTimeout(to);
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node.log('tcpc stopped client');
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}
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setupTcpClient();
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}
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if (this.trans == "udp") {
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var dgram = require('dgram');
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var server = dgram.createSocket('udp4');
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server.on('listening', function () {
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var address = server.address();
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node.log('udp listener at ' + address.address + ":" + address.port);
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});
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server.on('message', function (message, remote) {
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var msg = {topic:node.topic,payload:message,fromip:remote.address+':'+remote.port};
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node.send(msg);
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});
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server.bind(node.port);
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this._close = function() {
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server.close();
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node.log('udp listener stopped');
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}
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}
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}
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RED.nodes.registerType("socket in",SocketIn);
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SocketIn.prototype.close = function() {
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this._close();
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}
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