var ping = require('ping');

var hosts = ['192.168.1.1', 'google.com', 'yahoo.com'];
hosts.forEach(function(host){
    ping.sys.probe(host, function(isAlive){
        var msg = isAlive ? 'host ' + host + ' is alive' : 'host ' + host + ' is dead';
        console.log(msg);
    });
});

var cfg = {
    timeout: 10,
    // WARNING: -i 2 may not work in other platform like windows
    extra: ['-i', '2'],
};

hosts.forEach(function(host){
    ping.sys.probe(host, function(isAlive){
        var msg = isAlive ? 'host ' + host + ' is alive' : 'host ' + host + ' is dead';
        console.log(msg);
    }, cfg);
});

var ping = require('ping');

var hosts = ['192.168.1.1', 'google.com', 'yahoo.com'];

hosts.forEach(function (host) {
    ping.promise.probe(host)
        .then(function (res) {
            console.log(res);
        });
});

hosts.forEach(function (host) {
    // WARNING: -i 2 argument may not work in other platform like windows
    ping.promise.probe(host, {
        timeout: 10,
        extra: ['-i', '2'],
    }).then(function (res) {
        console.log(res);
    });
});

var ping = require('ping');

var hosts = ['192.168.1.1', 'google.com', 'yahoo.com'];

for(let host of hosts){
    let res = await ping.promise.probe(host);
    console.log(res);
}

var ping = require('ping');

var hosts = ['192.168.1.1', 'google.com', 'yahoo.com'];

for(let host of hosts){
     // WARNING: -i 2 argument may not work in other platform like windows
    let res = await ping.promise.probe(host, {
           timeout: 10,
           extra: ['-i', '2'],
       });
    console.log(res);
}

/**
 * Cross platform config representation
 * @typedef {Object} PingConfig
 * @property {boolean} numeric - Map IP address to hostname or not
 * @property {number} timeout - Timeout in seconds for each ping request.
 * Behaviour varies between platforms. Check platform ping documentation for more information.
 * @property {number} deadline - Specify a timeout, in seconds, before ping exits regardless of
              how many packets have been sent or received. In this case ping
              does not stop after count packet are sent, it waits either for
              deadline expire or until count probes are answered or for some
              error notification from network. This option is only available on linux and mac.
 * @property {number} min_reply - Exit after sending number of ECHO_REQUEST
 * @property {boolean} v6 - Ping via ipv6 or not. Default is false
 * @property {string} sourceAddr - source address for sending the ping
 * @property {number} packetSize - Specifies the number of data bytes to be sent
                                   Default: Linux / MAC: 56 Bytes, Windows: 32 Bytes
 * @property {string[]} extra - Optional options does not provided
 */

/**
 * Callback after probing given host
 * @callback probeCallback
 * @param {boolean} isAlive - Whether target is alive or not
 * @param {Object} error - Null if no error occurs
 */

/**
 * Parsed response
 * @typedef {object} PingResponse
 * @param {string} inputHost - The input IP address or HOST
 * @param {string} host - Parsed host from system command's output
 * @param {string} numeric_host - Target IP address
 * @param {boolean} alive - True for existed host
 * @param {string} output - Raw stdout from system ping
 * @param {number} time - Time (float) in ms for first successful ping response
 * @param {Array} times - Array of Time (float) in ms for each ping response
 * @param {string} min - Minimum time for collection records
 * @param {string} max - Maximum time for collection records
 * @param {string} avg - Average time for collection records
 * @param {string} packetLoss - Packet Losses in percent (100% -> "100.000")
 * @param {string} stddev - Standard deviation time for collected records
 */