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node-red/nodes/io/31-tcpout.js

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2013-09-05 16:02:48 +02:00
/**
* Copyright 2013 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.
**/
var RED = require("../../red/red");
var reConnect = RED.settings.socketReconnectTime||10000;
var net = require('net');
function TcpOut(n) {
RED.nodes.createNode(this,n);
this.host = n.host;
this.port = n.port * 1;
this.base64 = n.base64;
this.beserver = n.beserver;
this.name = n.name;
var node = this;
if (!node.beserver) {
var client = new net.Socket();
var to;
function setupTcpClient() {
client.connect(node.port, node.host, function() {
node.log("output connected to "+node.host+":"+node.port);
});
client.on('error', function (err) {
node.error('error : '+err);
to = setTimeout(setupTcpClient, reConnect);
});
client.on('end', function (err) {
node.log("output disconnected");
to = setTimeout(setupTcpClient, reConnect);
});
client.on('close', function() {
client.destroy();
node.log('closed');
to = setTimeout(setupTcpClient, reConnect);
});
node.on("input", function(msg) {
if (msg.payload != null) {
if (node.base64) { client.write(new Buffer(msg.payload,'base64')); }
else { client.write(msg.payload);}
}
});
}
setupTcpClient();
this._close = function() {
client.end();
clearTimeout(to);
node.log('output stopped');
}
}
else {
var server = net.createServer(function (socket) {
socket.on("connect",function() {
node.log("Connection from "+socket.remoteAddress);
});
node.on("input", function(msg) {
if (msg.payload != null) {
if (node.base64) { socket.write(new Buffer(msg.payload,'base64')); }
else { socket.write(msg.payload);}
}
});
});
server.listen(node.port);
node.log('socket output on port '+node.port);
this._close = function() {
server.close();
node.log('output stopped');
}
}
}
RED.nodes.registerType("tcp out",TcpOut);
TcpOut.prototype.close = function() {
this._close();
}