mirror of
https://github.com/node-red/node-red-nodes.git
synced 2023-10-10 13:36:58 +02:00
dd250a77bc
to be more consistent style
52 lines
1.8 KiB
JavaScript
52 lines
1.8 KiB
JavaScript
/**
|
|
* Copyright 2013,2016 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 dns = require("dns")
|
|
var ping = require ("net-ping");
|
|
|
|
function PingNode(n) {
|
|
RED.nodes.createNode(this,n);
|
|
this.host = n.host;
|
|
this.timer = n.timer * 1000;
|
|
this.session = ping.createSession();
|
|
var node = this;
|
|
|
|
node.tout = setInterval(function() {
|
|
dns.lookup(node.host, function(err, address, family) {
|
|
if (typeof address === 'undefined') { address = node.host; }
|
|
node.session.pingHost(address, function(error, target, sent, rcvd) {
|
|
var msg = { payload:false, topic:target };
|
|
if (error) {
|
|
msg.error = error.toString();
|
|
} else {
|
|
msg.payload = rcvd - sent;
|
|
}
|
|
node.send(msg);
|
|
node.session.close();
|
|
});
|
|
});
|
|
}, node.timer);
|
|
|
|
this.on("close", function() {
|
|
if (node.tout) { clearInterval(this.tout); }
|
|
if (node.session) { node.session.close(); }
|
|
});
|
|
}
|
|
RED.nodes.registerType("ping",PingNode);
|
|
}
|