diff --git a/io/88-ping.html b/io/88-ping.html new file mode 100644 index 00000000..051a9ab8 --- /dev/null +++ b/io/88-ping.html @@ -0,0 +1,59 @@ + + + + + + + + + diff --git a/io/88-ping.js b/io/88-ping.js new file mode 100644 index 00000000..be6740a6 --- /dev/null +++ b/io/88-ping.js @@ -0,0 +1,57 @@ +/** + * 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 spawn = require('child_process').spawn; +var plat = require('os').platform(); + +function PingNode(n) { + RED.nodes.createNode(this,n); + this.host = n.host; + this.timer = n.timer * 1000; + var node = this; + + node.tout = setInterval(function() { + var ex; + if (plat == "linux") ex = spawn('ping', ['-n', '-w 5', '-c 1', node.host]); + else if (plat.match(/^win/)) ex = spawn('ping', ['-n 1', '-w 5000', node.host]); + else if (plat == "darwin") ex = spawn('ping', ['-n', '-t 5', '-c 1', node.host]); + else node.error("Sorry - your platform - "+plat+" - is not recognised."); + var res=""; + + ex.stdout.on('data', function (data) { + //console.log('[ping] stdout: ' + data.toString()); + var regex = /time=(.*)ms/; + var m = regex.exec(data.toString())||[""]; + res = Number(m[1]); + }); + ex.stderr.on('data', function (data) { + //console.log('[ping] stderr: ' + data); + }); + ex.on('close', function (code) { + //console.log('[ping] result: ' + code); + var msg = { payload: false, topic:node.host }; + if (code == 0) msg = { payload: res, topic:node.host }; + node.send(msg); + }); + + }, node.timer); +} + +RED.nodes.registerType("ping",PingNode); + +PingNode.prototype.close = function() { + clearInterval(this.tout); +}