mirror of https://github.com/node-red/node-red.git
676 lines
30 KiB
JavaScript
676 lines
30 KiB
JavaScript
/**
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* Copyright JS Foundation and other contributors, http://js.foundation
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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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module.exports = function(RED) {
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"use strict";
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var reconnectTime = RED.settings.socketReconnectTime||10000;
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var socketTimeout = RED.settings.socketTimeout||null;
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const msgQueueSize = RED.settings.tcpMsgQueueSize || 1000;
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const Denque = require('denque');
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var net = require('net');
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var connectionPool = {};
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/**
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* Enqueue `item` in `queue`
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* @param {Denque} queue - Queue
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* @param {*} item - Item to enqueue
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* @private
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* @returns {Denque} `queue`
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*/
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const enqueue = (queue, item) => {
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// drop msgs from front of queue if size is going to be exceeded
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if (queue.size() === msgQueueSize) { queue.shift(); }
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queue.push(item);
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return queue;
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};
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/**
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* Shifts item off front of queue
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* @param {Deque} queue - Queue
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* @private
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* @returns {*} Item previously at front of queue
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*/
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const dequeue = queue => queue.shift();
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function TcpIn(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.topic = n.topic;
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this.stream = (!n.datamode||n.datamode=='stream'); /* stream,single*/
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this.datatype = n.datatype||'buffer'; /* buffer,utf8,base64 */
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this.newline = (n.newline||"").replace("\\n","\n").replace("\\r","\r");
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this.base64 = n.base64;
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this.server = (typeof n.server == 'boolean')?n.server:(n.server == "server");
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this.closing = false;
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this.connected = false;
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var node = this;
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var count = 0;
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if (!node.server) {
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var buffer = null;
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var client;
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var reconnectTimeout;
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var end = false;
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var setupTcpClient = function() {
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node.log(RED._("tcpin.status.connecting",{host:node.host,port:node.port}));
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node.status({fill:"grey",shape:"dot",text:"common.status.connecting"});
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var id = (1+Math.random()*4294967295).toString(16);
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client = net.connect(node.port, node.host, function() {
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buffer = (node.datatype == 'buffer') ? Buffer.alloc(0) : "";
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node.connected = true;
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node.log(RED._("tcpin.status.connected",{host:node.host,port:node.port}));
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node.status({fill:"green",shape:"dot",text:"common.status.connected"});
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});
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client.setKeepAlive(true,120000);
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connectionPool[id] = client;
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client.on('data', function (data) {
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if (node.datatype != 'buffer') {
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data = data.toString(node.datatype);
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}
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if (node.stream) {
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var msg;
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if ((node.datatype) === "utf8" && node.newline !== "") {
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buffer = buffer+data;
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var parts = buffer.split(node.newline);
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for (var i = 0; i<parts.length-1; i+=1) {
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msg = {topic:node.topic, payload:parts[i]};
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msg._session = {type:"tcp",id:id};
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node.send(msg);
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}
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buffer = parts[parts.length-1];
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} else {
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msg = {topic:node.topic, payload:data};
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msg._session = {type:"tcp",id:id};
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node.send(msg);
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}
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} else {
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if ((typeof data) === "string") {
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buffer = buffer+data;
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} else {
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buffer = Buffer.concat([buffer,data],buffer.length+data.length);
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}
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}
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});
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client.on('end', function() {
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if (!node.stream || (node.datatype == "utf8" && node.newline !== "" && buffer.length > 0)) {
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var msg = {topic:node.topic, payload:buffer};
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msg._session = {type:"tcp",id:id};
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if (buffer.length !== 0) {
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end = true; // only ask for fast re-connect if we actually got something
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node.send(msg);
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}
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buffer = null;
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}
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});
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client.on('close', function() {
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delete connectionPool[id];
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node.connected = false;
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node.status({fill:"red",shape:"ring",text:"common.status.disconnected"});
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if (!node.closing) {
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if (end) { // if we were asked to close then try to reconnect once very quick.
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end = false;
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reconnectTimeout = setTimeout(setupTcpClient, 20);
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}
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else {
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node.log(RED._("tcpin.errors.connection-lost",{host:node.host,port:node.port}));
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reconnectTimeout = setTimeout(setupTcpClient, reconnectTime);
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}
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} else {
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if (node.done) { node.done(); }
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}
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});
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client.on('error', function(err) {
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node.log(err);
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});
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}
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setupTcpClient();
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this.on('close', function(done) {
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node.done = done;
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this.closing = true;
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if (client) { client.destroy(); }
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clearTimeout(reconnectTimeout);
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if (!node.connected) { done(); }
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});
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}
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else {
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var server = net.createServer(function (socket) {
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socket.setKeepAlive(true,120000);
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if (socketTimeout !== null) { socket.setTimeout(socketTimeout); }
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var id = (1+Math.random()*4294967295).toString(16);
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var fromi;
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var fromp;
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connectionPool[id] = socket;
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count++;
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node.status({text:RED._("tcpin.status.connections",{count:count})});
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var buffer = (node.datatype == 'buffer') ? Buffer.alloc(0) : "";
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socket.on('data', function (data) {
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if (node.datatype != 'buffer') {
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data = data.toString(node.datatype);
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}
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if (node.stream) {
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var msg;
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if ((typeof data) === "string" && node.newline !== "") {
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buffer = buffer+data;
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var parts = buffer.split(node.newline);
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for (var i = 0; i<parts.length-1; i+=1) {
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msg = {topic:node.topic, payload:parts[i], ip:socket.remoteAddress, port:socket.remotePort};
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msg._session = {type:"tcp",id:id};
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node.send(msg);
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}
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buffer = parts[parts.length-1];
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} else {
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msg = {topic:node.topic, payload:data, ip:socket.remoteAddress, port:socket.remotePort};
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msg._session = {type:"tcp",id:id};
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node.send(msg);
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}
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}
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else {
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if ((typeof data) === "string") {
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buffer = buffer+data;
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} else {
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buffer = Buffer.concat([buffer,data],buffer.length+data.length);
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}
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fromi = socket.remoteAddress;
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fromp = socket.remotePort;
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}
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});
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socket.on('end', function() {
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if (!node.stream || (node.datatype === "utf8" && node.newline !== "")) {
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if (buffer.length > 0) {
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var msg = {topic:node.topic, payload:buffer, ip:fromi, port:fromp};
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msg._session = {type:"tcp",id:id};
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node.send(msg);
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}
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buffer = null;
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}
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});
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socket.on('timeout', function() {
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node.log(RED._("tcpin.errors.timeout",{port:node.port}));
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socket.end();
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});
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socket.on('close', function() {
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delete connectionPool[id];
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count--;
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node.status({text:RED._("tcpin.status.connections",{count:count})});
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});
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socket.on('error',function(err) {
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node.log(err);
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});
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});
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server.on('error', function(err) {
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if (err) {
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node.error(RED._("tcpin.errors.cannot-listen",{port:node.port,error:err.toString()}));
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}
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});
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server.listen(node.port, function(err) {
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if (err) {
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node.error(RED._("tcpin.errors.cannot-listen",{port:node.port,error:err.toString()}));
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} else {
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node.log(RED._("tcpin.status.listening-port",{port:node.port}));
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node.on('close', function() {
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for (var c in connectionPool) {
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if (connectionPool.hasOwnProperty(c)) {
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connectionPool[c].end();
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connectionPool[c].unref();
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}
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}
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node.closing = true;
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server.close();
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node.log(RED._("tcpin.status.stopped-listening",{port:node.port}));
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});
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}
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});
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}
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}
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RED.nodes.registerType("tcp in",TcpIn);
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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.doend = n.end || false;
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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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this.connected = 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 end = false;
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var setupTcpClient = function() {
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node.log(RED._("tcpin.status.connecting",{host:node.host,port:node.port}));
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node.status({fill:"grey",shape:"dot",text:"common.status.connecting"});
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client = net.connect(node.port, node.host, function() {
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node.connected = true;
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node.log(RED._("tcpin.status.connected",{host:node.host,port:node.port}));
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node.status({fill:"green",shape:"dot",text:"common.status.connected"});
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});
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client.setKeepAlive(true,120000);
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client.on('error', function (err) {
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node.log(RED._("tcpin.errors.error",{error:err.toString()}));
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});
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client.on('end', function (err) {
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node.status({});
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node.connected = false;
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});
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client.on('close', function() {
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node.status({fill:"red",shape:"ring",text:"common.status.disconnected"});
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node.connected = false;
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client.destroy();
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if (!node.closing) {
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if (end) {
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end = false;
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reconnectTimeout = setTimeout(setupTcpClient,20);
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}
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else {
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node.log(RED._("tcpin.errors.connection-lost",{host:node.host,port:node.port}));
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reconnectTimeout = setTimeout(setupTcpClient,reconnectTime);
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}
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} else {
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if (node.done) { node.done(); }
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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 (node.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(Buffer.from(msg.payload,'base64'));
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} else {
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client.write(Buffer.from(""+msg.payload));
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}
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if (node.doend === true) {
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end = true;
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if (client) { node.status({}); client.destroy(); }
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}
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}
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});
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node.on("close", function(done) {
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node.done = done;
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this.closing = true;
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if (client) { client.destroy(); }
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clearTimeout(reconnectTimeout);
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if (!node.connected) { done(); }
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});
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}
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else if (node.beserver == "reply") {
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node.on("input",function(msg) {
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if (msg._session && msg._session.type == "tcp") {
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var client = connectionPool[msg._session.id];
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if (client) {
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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(Buffer.from(msg.payload,'base64'));
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} else {
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client.write(Buffer.from(""+msg.payload));
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}
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}
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}
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else {
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for (var i in connectionPool) {
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if (Buffer.isBuffer(msg.payload)) {
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connectionPool[i].write(msg.payload);
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} else if (typeof msg.payload === "string" && node.base64) {
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connectionPool[i].write(Buffer.from(msg.payload,'base64'));
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} else {
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connectionPool[i].write(Buffer.from(""+msg.payload));
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}
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}
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}
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});
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}
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else {
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var connectedSockets = [];
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node.status({text:RED._("tcpin.status.connections",{count:0})});
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var server = net.createServer(function (socket) {
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socket.setKeepAlive(true,120000);
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if (socketTimeout !== null) { socket.setTimeout(socketTimeout); }
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var remoteDetails = socket.remoteAddress+":"+socket.remotePort;
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node.log(RED._("tcpin.status.connection-from",{host:socket.remoteAddress, port:socket.remotePort}));
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connectedSockets.push(socket);
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node.status({text:RED._("tcpin.status.connections",{count:connectedSockets.length})});
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socket.on('timeout', function() {
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node.log(RED._("tcpin.errors.timeout",{port:node.port}));
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socket.end();
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});
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socket.on('close',function() {
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node.log(RED._("tcpin.status.connection-closed",{host:socket.remoteAddress, port:socket.remotePort}));
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connectedSockets.splice(connectedSockets.indexOf(socket),1);
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node.status({text:RED._("tcpin.status.connections",{count:connectedSockets.length})});
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});
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socket.on('error',function() {
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node.log(RED._("tcpin.errors.socket-error",{host:socket.remoteAddress, port:socket.remotePort}));
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connectedSockets.splice(connectedSockets.indexOf(socket),1);
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node.status({text:RED._("tcpin.status.connections",{count:connectedSockets.length})});
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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 = Buffer.from(msg.payload,'base64');
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} else {
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buffer = Buffer.from(""+msg.payload);
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}
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for (var i = 0; i < connectedSockets.length; i += 1) {
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if (node.doend === true) { connectedSockets[i].end(buffer); }
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else { connectedSockets[i].write(buffer); }
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}
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}
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});
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server.on('error', function(err) {
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if (err) {
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node.error(RED._("tcpin.errors.cannot-listen",{port:node.port,error:err.toString()}));
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}
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});
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server.listen(node.port, function(err) {
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if (err) {
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node.error(RED._("tcpin.errors.cannot-listen",{port:node.port,error:err.toString()}));
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} else {
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node.log(RED._("tcpin.status.listening-port",{port:node.port}));
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node.on('close', function() {
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for (var c in connectedSockets) {
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if (connectedSockets.hasOwnProperty(c)) {
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connectedSockets[c].end();
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connectedSockets[c].unref();
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}
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}
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server.close();
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node.log(RED._("tcpin.status.stopped-listening",{port:node.port}));
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});
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}
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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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function TcpGet(n) {
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RED.nodes.createNode(this,n);
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this.server = n.server;
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this.port = Number(n.port);
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this.out = n.out;
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this.splitc = n.splitc;
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if (this.out === "immed") { this.splitc = -1; this.out = "time"; }
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if (this.out !== "char") { this.splitc = Number(this.splitc); }
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else {
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if (this.splitc[0] == '\\') {
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this.splitc = parseInt(this.splitc.replace("\\n",0x0A).replace("\\r",0x0D).replace("\\t",0x09).replace("\\e",0x1B).replace("\\f",0x0C).replace("\\0",0x00));
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} // jshint ignore:line
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if (typeof this.splitc == "string") {
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if (this.splitc.substr(0,2) == "0x") {
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this.splitc = parseInt(this.splitc);
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}
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else {
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this.splitc = this.splitc.charCodeAt(0);
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}
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} // jshint ignore:line
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}
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var node = this;
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var clients = {};
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this.on("input", function(msg) {
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var i = 0;
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if ((!Buffer.isBuffer(msg.payload)) && (typeof msg.payload !== "string")) {
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msg.payload = msg.payload.toString();
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}
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var host = node.server || msg.host;
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var port = node.port || msg.port;
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// Store client information independently
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// the clients object will have:
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// clients[id].client, clients[id].msg, clients[id].timeout
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var connection_id = host + ":" + port;
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clients[connection_id] = clients[connection_id] || {
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msgQueue: new Denque(),
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connected: false,
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connecting: false
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};
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enqueue(clients[connection_id].msgQueue, msg);
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clients[connection_id].lastMsg = msg;
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if (!clients[connection_id].connecting && !clients[connection_id].connected) {
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var buf;
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if (this.out == "count") {
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if (this.splitc === 0) { buf = Buffer.alloc(1); }
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else { buf = Buffer.alloc(this.splitc); }
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}
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else { buf = Buffer.alloc(65536); } // set it to 64k... hopefully big enough for most TCP packets.... but only hopefully
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clients[connection_id].client = net.Socket();
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if (socketTimeout !== null) { clients[connection_id].client.setTimeout(socketTimeout);}
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if (host && port) {
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clients[connection_id].connecting = true;
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clients[connection_id].client.connect(port, host, function() {
|
|
//node.log(RED._("tcpin.errors.client-connected"));
|
|
node.status({fill:"green",shape:"dot",text:"common.status.connected"});
|
|
if (clients[connection_id] && clients[connection_id].client) {
|
|
clients[connection_id].connected = true;
|
|
clients[connection_id].connecting = false;
|
|
let msg;
|
|
while (msg = dequeue(clients[connection_id].msgQueue)) {
|
|
clients[connection_id].client.write(msg.payload);
|
|
}
|
|
if (node.out === "time" && node.splitc < 0) {
|
|
clients[connection_id].connected = clients[connection_id].connecting = false;
|
|
clients[connection_id].client.end();
|
|
delete clients[connection_id];
|
|
node.status({});
|
|
}
|
|
}
|
|
});
|
|
}
|
|
else {
|
|
node.warn(RED._("tcpin.errors.no-host"));
|
|
}
|
|
|
|
clients[connection_id].client.on('data', function(data) {
|
|
if (node.out === "sit") { // if we are staying connected just send the buffer
|
|
if (clients[connection_id]) {
|
|
const msg = clients[connection_id].lastMsg || {};
|
|
msg.payload = data;
|
|
node.send(RED.util.cloneMessage(msg));
|
|
}
|
|
}
|
|
// else if (node.splitc === 0) {
|
|
// clients[connection_id].msg.payload = data;
|
|
// node.send(clients[connection_id].msg);
|
|
// }
|
|
else {
|
|
for (var j = 0; j < data.length; j++ ) {
|
|
if (node.out === "time") {
|
|
if (clients[connection_id]) {
|
|
// do the timer thing
|
|
if (clients[connection_id].timeout) {
|
|
i += 1;
|
|
buf[i] = data[j];
|
|
}
|
|
else {
|
|
clients[connection_id].timeout = setTimeout(function () {
|
|
if (clients[connection_id]) {
|
|
clients[connection_id].timeout = null;
|
|
const msg = clients[connection_id].lastMsg || {};
|
|
msg.payload = Buffer.alloc(i+1);
|
|
buf.copy(msg.payload,0,0,i+1);
|
|
node.send(msg);
|
|
if (clients[connection_id].client) {
|
|
node.status({});
|
|
clients[connection_id].client.destroy();
|
|
delete clients[connection_id];
|
|
}
|
|
}
|
|
}, node.splitc);
|
|
i = 0;
|
|
buf[0] = data[j];
|
|
}
|
|
}
|
|
}
|
|
// count bytes into a buffer...
|
|
else if (node.out == "count") {
|
|
buf[i] = data[j];
|
|
i += 1;
|
|
if ( i >= node.splitc) {
|
|
if (clients[connection_id]) {
|
|
const msg = clients[connection_id].lastMsg || {};
|
|
msg.payload = Buffer.alloc(i);
|
|
buf.copy(msg.payload,0,0,i);
|
|
node.send(msg);
|
|
if (clients[connection_id].client) {
|
|
node.status({});
|
|
clients[connection_id].client.destroy();
|
|
delete clients[connection_id];
|
|
}
|
|
i = 0;
|
|
}
|
|
}
|
|
}
|
|
// look for a char
|
|
else {
|
|
buf[i] = data[j];
|
|
i += 1;
|
|
if (data[j] == node.splitc) {
|
|
if (clients[connection_id]) {
|
|
const msg = clients[connection_id].lastMsg || {};
|
|
msg.payload = Buffer.alloc(i);
|
|
buf.copy(msg.payload,0,0,i);
|
|
node.send(msg);
|
|
if (clients[connection_id].client) {
|
|
node.status({});
|
|
clients[connection_id].client.destroy();
|
|
delete clients[connection_id];
|
|
}
|
|
i = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
clients[connection_id].client.on('end', function() {
|
|
//console.log("END");
|
|
node.status({fill:"grey",shape:"ring",text:"common.status.disconnected"});
|
|
if (clients[connection_id] && clients[connection_id].client) {
|
|
clients[connection_id].connected = clients[connection_id].connecting = false;
|
|
clients[connection_id].client = null;
|
|
}
|
|
});
|
|
|
|
clients[connection_id].client.on('close', function() {
|
|
//console.log("CLOSE");
|
|
if (clients[connection_id]) {
|
|
clients[connection_id].connected = clients[connection_id].connecting = false;
|
|
}
|
|
|
|
var anyConnected = false;
|
|
|
|
for (var client in clients) {
|
|
if (clients[client].connected) {
|
|
anyConnected = true;
|
|
break;
|
|
}
|
|
}
|
|
if (node.done && !anyConnected) {
|
|
clients = {};
|
|
node.done();
|
|
}
|
|
});
|
|
|
|
clients[connection_id].client.on('error', function() {
|
|
//console.log("ERROR");
|
|
node.status({fill:"red",shape:"ring",text:"common.status.error"});
|
|
node.error(RED._("tcpin.errors.connect-fail") + " " + connection_id, msg);
|
|
if (clients[connection_id] && clients[connection_id].client) {
|
|
clients[connection_id].client.destroy();
|
|
delete clients[connection_id];
|
|
}
|
|
});
|
|
|
|
clients[connection_id].client.on('timeout',function() {
|
|
//console.log("TIMEOUT");
|
|
if (clients[connection_id]) {
|
|
clients[connection_id].connected = clients[connection_id].connecting = false;
|
|
node.status({fill:"grey",shape:"dot",text:"tcpin.errors.connect-timeout"});
|
|
//node.warn(RED._("tcpin.errors.connect-timeout"));
|
|
if (clients[connection_id].client) {
|
|
clients[connection_id].connecting = true;
|
|
clients[connection_id].client.connect(port, host, function() {
|
|
clients[connection_id].connected = true;
|
|
clients[connection_id].connecting = false;
|
|
node.status({fill:"green",shape:"dot",text:"common.status.connected"});
|
|
});
|
|
}
|
|
}
|
|
});
|
|
}
|
|
else if (!clients[connection_id].connecting && clients[connection_id].connected) {
|
|
if (clients[connection_id] && clients[connection_id].client) {
|
|
clients[connection_id].client.write(dequeue(clients[connection_id].msgQueue).payload);
|
|
}
|
|
}
|
|
});
|
|
|
|
this.on("close", function(done) {
|
|
node.done = done;
|
|
for (var cl in clients) {
|
|
if (clients[cl].hasOwnProperty("client")) {
|
|
clients[cl].client.destroy();
|
|
}
|
|
}
|
|
node.status({});
|
|
|
|
// this is probably not necessary and may be removed
|
|
var anyConnected = false;
|
|
for (var c in clients) {
|
|
if (clients[c].connected) {
|
|
anyConnected = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!anyConnected) { clients = {}; }
|
|
done();
|
|
});
|
|
|
|
}
|
|
RED.nodes.registerType("tcp request",TcpGet);
|
|
}
|