--- /dev/null
+/**
+ * Copyright 2013,2014 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.
+ **/
+
+module.exports = function(RED) {
+ "use strict";
+ var reconnectTime = RED.settings.socketReconnectTime||10000;
+ var socketTimeout = RED.settings.socketTimeout||null;
+ var net = require('net');
+
+ var connectionPool = {};
+
+ function TcpIn(n) {
+ RED.nodes.createNode(this,n);
+ this.host = n.host;
+ this.port = n.port * 1;
+ this.topic = n.topic;
+ this.stream = (!n.datamode||n.datamode=='stream'); /* stream,single*/
+ this.datatype = n.datatype||'buffer'; /* buffer,utf8,base64 */
+ this.newline = (n.newline||"").replace("\\n","\n").replace("\\r","\r");
+ this.base64 = n.base64;
+ this.server = (typeof n.server == 'boolean')?n.server:(n.server == "server");
+ this.closing = false;
+ var node = this;
+ var count = 0;
+
+ if (!node.server) {
+ var buffer = null;
+ var client;
+ var reconnectTimeout;
+ var end = false;
+ var setupTcpClient = function() {
+ node.log("connecting to "+node.host+":"+node.port);
+ node.status({fill:"grey",shape:"dot",text:"connecting"});
+ var id = (1+Math.random()*4294967295).toString(16);
+ client = net.connect(node.port, node.host, function() {
+ buffer = (node.datatype == 'buffer')? new Buffer(0):"";
+ node.log("connected to "+node.host+":"+node.port);
+ node.status({fill:"green",shape:"dot",text:"connected"});
+ });
+ connectionPool[id] = client;
+
+ client.on('data', function (data) {
+ if (node.datatype != 'buffer') {
+ data = data.toString(node.datatype);
+ }
+ if (node.stream) {
+ if ((node.datatype) === "utf8" && node.newline != "") {
+ buffer = buffer+data;
+ var parts = buffer.split(node.newline);
+ for (var i = 0;i<parts.length-1;i+=1) {
+ var msg = {topic:node.topic, payload:parts[i]};
+ msg._session = {type:"tcp",id:id};
+ node.send(msg);
+ }
+ buffer = parts[parts.length-1];
+ } else {
+ var msg = {topic:node.topic, payload:data};
+ msg._session = {type:"tcp",id:id};
+ node.send(msg);
+ }
+ } else {
+ if ((typeof data) === "string") {
+ buffer = buffer+data;
+ } else {
+ buffer = Buffer.concat([buffer,data],buffer.length+data.length);
+ }
+ }
+ });
+ client.on('end', function() {
+ if (!node.stream || (node.datatype == "utf8" && node.newline != "" && buffer.length > 0)) {
+ var msg = {topic:node.topic,payload:buffer};
+ msg._session = {type:"tcp",id:id};
+ if (buffer.length !== 0) {
+ end = true; // only ask for fast re-connect if we actually got something
+ node.send(msg);
+ }
+ buffer = null;
+ }
+ });
+ client.on('close', function() {
+ delete connectionPool[id];
+ node.status({fill:"red",shape:"ring",text:"disconnected"});
+ if (!node.closing) {
+ if (end) { // if we were asked to close then try to reconnect once very quick.
+ end = false;
+ reconnectTimeout = setTimeout(setupTcpClient, 20);
+ }
+ else {
+ node.log("connection lost to "+node.host+":"+node.port);
+ reconnectTimeout = setTimeout(setupTcpClient, reconnectTime);
+ }
+ }
+ });
+ client.on('error', function(err) {
+ node.log(err);
+ });
+ }
+ setupTcpClient();
+
+ this.on('close', function() {
+ this.closing = true;
+ client.end();
+ clearTimeout(reconnectTimeout);
+ });
+ } else {
+ var server = net.createServer(function (socket) {
+ if (socketTimeout !== null) { socket.setTimeout(socketTimeout); }
+ var id = (1+Math.random()*4294967295).toString(16);
+ connectionPool[id] = socket;
+ node.status({text:++count+" connections"});
+
+ var buffer = (node.datatype == 'buffer')? new Buffer(0):"";
+ socket.on('data', function (data) {
+ if (node.datatype != 'buffer') {
+ data = data.toString(node.datatype);
+ }
+ if (node.stream) {
+ if ((typeof data) === "string" && node.newline != "") {
+ buffer = buffer+data;
+ var parts = buffer.split(node.newline);
+ for (var i = 0;i<parts.length-1;i+=1) {
+ var msg = {topic:node.topic, payload:parts[i],ip:socket.remoteAddress,port:socket.remotePort};
+ msg._session = {type:"tcp",id:id};
+ node.send(msg);
+ }
+ buffer = parts[parts.length-1];
+ } else {
+ var msg = {topic:node.topic, payload:data};
+ msg._session = {type:"tcp",id:id};
+ node.send(msg);
+ }
+ } else {
+ if ((typeof data) === "string") {
+ buffer = buffer+data;
+ } else {
+ buffer = Buffer.concat([buffer,data],buffer.length+data.length);
+ }
+ }
+ });
+ socket.on('end', function() {
+ if (!node.stream || (node.datatype === "utf8" && node.newline !== "")) {
+ if (buffer.length > 0) {
+ var msg = {topic:node.topic,payload:buffer};
+ msg._session = {type:"tcp",id:id};
+ node.send(msg);
+ }
+ buffer = null;
+ }
+ });
+ socket.on('timeout', function() {
+ node.log('timeout closed socket port '+node.port);
+ socket.end();
+ });
+ socket.on('close', function() {
+ delete connectionPool[id];
+ node.status({text:--count+" connections"});
+ });
+ socket.on('error',function(err) {
+ node.log(err);
+ });
+ });
+ server.on('error', function(err) {
+ if (err) {
+ node.error('unable to listen on port '+node.port+' : '+err);
+ }
+ });
+ server.listen(node.port, function(err) {
+ if (err) {
+ node.error('unable to listen on port '+node.port+' : '+err);
+ } else {
+ node.log('listening on port '+node.port);
+
+ node.on('close', function() {
+ node.closing = true;
+ server.close();
+ node.log('stopped listening on port '+node.port);
+ });
+ }
+ });
+ }
+
+ }
+ RED.nodes.registerType("tcp in",TcpIn);
+
+ function TcpOut(n) {
+ RED.nodes.createNode(this,n);
+ this.host = n.host;
+ this.port = n.port * 1;
+ this.base64 = n.base64;
+ this.doend = n.end || false;
+ this.beserver = n.beserver;
+ this.name = n.name;
+ this.closing = false;
+ var node = this;
+
+ if (!node.beserver||node.beserver=="client") {
+ var reconnectTimeout;
+ var client = null;
+ var connected = false;
+ var end = false;
+
+ var setupTcpClient = function() {
+ node.log("connecting to "+node.host+":"+node.port);
+ node.status({fill:"grey",shape:"dot",text:"connecting"});
+ client = net.connect(node.port, node.host, function() {
+ connected = true;
+ node.log("connected to "+node.host+":"+node.port);
+ node.status({fill:"green",shape:"dot",text:"connected"});
+ });
+ client.on('error', function (err) {
+ node.log('error : '+err);
+ });
+ client.on('end', function (err) {
+ });
+ client.on('close', function() {
+ node.status({fill:"red",shape:"ring",text:"disconnected"});
+ connected = false;
+ client.destroy();
+ if (!node.closing) {
+ if (end) {
+ end = false;
+ reconnectTimeout = setTimeout(setupTcpClient,20);
+ }
+ else {
+ node.log("connection lost to "+node.host+":"+node.port);
+ reconnectTimeout = setTimeout(setupTcpClient,reconnectTime);
+ }
+ }
+ });
+ }
+ setupTcpClient();
+
+ node.on("input", function(msg) {
+ if (connected && msg.payload != null) {
+ if (Buffer.isBuffer(msg.payload)) {
+ client.write(msg.payload);
+ } else if (typeof msg.payload === "string" && node.base64) {
+ client.write(new Buffer(msg.payload,'base64'));
+ } else {
+ client.write(new Buffer(""+msg.payload));
+ }
+ if (node.doend === true) {
+ end = true;
+ client.end();
+ }
+ }
+ });
+
+ node.on("close", function() {
+ this.closing = true;
+ client.end();
+ clearTimeout(reconnectTimeout);
+ });
+
+ } else if (node.beserver == "reply") {
+ node.on("input",function(msg) {
+ if (msg._session && msg._session.type == "tcp") {
+ var client = connectionPool[msg._session.id];
+ if (client) {
+ if (Buffer.isBuffer(msg.payload)) {
+ client.write(msg.payload);
+ } else if (typeof msg.payload === "string" && node.base64) {
+ client.write(new Buffer(msg.payload,'base64'));
+ } else {
+ client.write(new Buffer(""+msg.payload));
+ }
+ }
+ }
+ });
+ } else {
+ var connectedSockets = [];
+ node.status({text:"0 connections"});
+ var server = net.createServer(function (socket) {
+ if (socketTimeout !== null) { socket.setTimeout(socketTimeout); }
+ var remoteDetails = socket.remoteAddress+":"+socket.remotePort;
+ node.log("connection from "+remoteDetails);
+ connectedSockets.push(socket);
+ node.status({text:connectedSockets.length+" connections"});
+ socket.on('timeout', function() {
+ node.log('timeout closed socket port '+node.port);
+ socket.end();
+ });
+ socket.on('close',function() {
+ node.log("connection closed from "+remoteDetails);
+ connectedSockets.splice(connectedSockets.indexOf(socket),1);
+ node.status({text:connectedSockets.length+" connections"});
+ });
+ socket.on('error',function() {
+ node.log("socket error from "+remoteDetails);
+ connectedSockets.splice(connectedSockets.indexOf(socket),1);
+ node.status({text:connectedSockets.length+" connections"});
+ });
+ });
+
+ node.on("input", function(msg) {
+ if (msg.payload != null) {
+ var buffer;
+ if (Buffer.isBuffer(msg.payload)) {
+ buffer = msg.payload;
+ } else if (typeof msg.payload === "string" && node.base64) {
+ buffer = new Buffer(msg.payload,'base64');
+ } else {
+ buffer = new Buffer(""+msg.payload);
+ }
+ for (var i = 0; i<connectedSockets.length;i+=1) {
+ if (node.doend === true) { connectedSockets[i].end(buffer); }
+ else { connectedSockets[i].write(buffer); }
+ }
+ }
+ });
+
+ server.on('error', function(err) {
+ if (err) {
+ node.error('unable to listen on port '+node.port+' : '+err);
+ }
+ });
+
+ server.listen(node.port, function(err) {
+ if (err) {
+ node.error('unable to listen on port '+node.port+' : '+err);
+ } else {
+ node.log('listening on port '+node.port);
+ node.on('close', function() {
+ server.close();
+ node.log('stopped listening on port '+node.port);
+ });
+ }
+ });
+ }
+ }
+ RED.nodes.registerType("tcp out",TcpOut);
+
+ function TcpGet(n) {
+ RED.nodes.createNode(this,n);
+ this.server = n.server;
+ this.port = Number(n.port);
+ this.out = n.out;
+ this.splitc = n.splitc;
+
+ if (this.out != "char") { this.splitc = Number(this.splitc); }
+ else { this.splitc.replace("\\n","\n").replace("\\r","\r").replace("\\t","\t").replace("\\e","\e").replace("\\f","\f").replace("\\0","\0"); }
+
+ var buf;
+ if (this.out == "count") { buf = new Buffer(this.splitc); }
+ else { buf = new Buffer(32768); } // set it to 32k... hopefully big enough for most.... but only hopefully
+
+ this.connected = false;
+ var node = this;
+ var client;
+
+ this.on("input", function(msg) {
+ var i = 0;
+ if ((!Buffer.isBuffer(msg.payload)) && (typeof msg.payload !== "string")) {
+ msg.payload = msg.payload.toString();
+ }
+ if (!node.connected) {
+ client = net.Socket();
+ client.setTimeout(socketTimeout);
+ node.status({});
+ client.connect(node.port, node.server, function() {
+ //node.log('client connected');
+ node.status({fill:"green",shape:"dot",text:"connected"});
+ node.connected = true;
+ client.write(msg.payload);
+ });
+
+ client.on('data', function(data) {
+ //node.log("data:"+ data.length+":"+ data);
+ if (node.splitc === 0) {
+ node.send({"payload": data});
+ }
+ else if (node.out === "sit") { // if we are staying connected just send the buffer
+ node.send({"payload": data});
+ }
+ else {
+ for (var j = 0; j < data.length; j++ ) {
+ if (node.out === "time") {
+ // do the timer thing
+ if (node.tout) {
+ i += 1;
+ buf[i] = data[j];
+ }
+ else {
+ node.tout = setTimeout(function () {
+ node.tout = null;
+ var m = new Buffer(i+1);
+ buf.copy(m,0,0,i+1);
+ node.send({"payload": m});
+ client.end();
+ m = null;
+ }, 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.serialConfig.count) {
+ node.send({"payload": buf});
+ client.end();
+ i = 0;
+ }
+ }
+ // look for a char
+ else {
+ buf[i] = data[j];
+ i += 1;
+ if (data[j] == node.splitc) {
+ var m = new Buffer(i);
+ buf.copy(m,0,0,i);
+ node.send({"payload": m});
+ client.end();
+ m = null;
+ i = 0;
+ }
+ }
+ }
+ }
+ });
+
+ client.on('end', function() {
+ //node.log('client disconnected');
+ node.connected = false;
+ node.status({});
+ client = null;
+ });
+
+ client.on('error', function() {
+ node.log('connect failed');
+ node.status({fill:"red",shape:"ring",text:"error"});
+ if (client) { client.end(); }
+ });
+
+ client.on('timeout',function() {
+ node.log('connect timeout');
+ if (client) {
+ client.end();
+ setTimeout(function() {
+ client.connect(node.port, node.server, function() {
+ //node.log('client connected');
+ node.connected = true;
+ client.write(msg.payload);
+ });
+ },reconnectTime);
+ }
+ });
+ }
+ else { client.write(msg.payload); }
+ });
+
+ this.on("close", function() {
+ if (client) { buf = null; client.end(); }
+ });
+
+ }
+ RED.nodes.registerType("tcp request",TcpGet);
+}
Code Review / ccsdk / distribution.git / blobdiff