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Add session awareness to TCP nodes

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Closes #63,#65
This commit is contained in:
Nick O'Leary
2013-12-19 21:16:25 +00:00
parent 02df584af6
commit 73f3ea52a5
2 changed files with 48 additions and 6 deletions
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36
nodes/core/io/31-tcpin.js
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@@ -18,6 +18,10 @@ var RED = require(process.env.NODE_RED_HOME+"/red/red");
var reconnectTime = RED.settings.socketReconnectTime||10000;
var net = require('net');
var connectionPool = {};
function TcpIn(n) {
RED.nodes.createNode(this,n);
this.host = n.host;
@@ -37,11 +41,13 @@ function TcpIn(n) {
var reconnectTimeout;
function setupTcpClient() {
node.log("connecting to "+node.host+":"+node.port);
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);
});
connectionPool[id] = client;
client.on('data', function (data) {
if (node.datatype != 'buffer') {
data = data.toString(node.datatype);
@@ -52,11 +58,13 @@ function TcpIn(n) {
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 {
@@ -70,12 +78,14 @@ function TcpIn(n) {
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};
node.send(msg);
buffer = null;
}
});
client.on('close', function() {
delete connectionPool[id];
node.log("connection lost to "+node.host+":"+node.port);
if (!node.closing) {
reconnectTimeout = setTimeout(setupTcpClient, reconnectTime);
@@ -95,6 +105,9 @@ function TcpIn(n) {
});
} else {
var server = net.createServer(function (socket) {
var id = (1+Math.random()*4294967295).toString(16);
connectionPool[id] = socket;
var buffer = (node.datatype == 'buffer')? new Buffer(0):"";
socket.on('data', function (data) {
if (node.datatype != 'buffer') {
@@ -107,11 +120,13 @@ function TcpIn(n) {
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 {
@@ -125,10 +140,14 @@ function TcpIn(n) {
socket.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};
node.send(msg);
buffer = null;
}
});
socket.on('close', function() {
delete connectionPool[id];
});
socket.on('error',function(err) {
node.log(err);
});
@@ -206,6 +225,21 @@ function TcpOut(n) {
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 = [];
var server = net.createServer(function (socket) {