37 lines
817 B
JavaScript
37 lines
817 B
JavaScript
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'use strict';
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const Command = require('./command');
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const CommandCode = require('../constants/commands');
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const Packet = require('../packets/packet');
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// TODO: time statistics?
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// usefull for queue size and network latency monitoring
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// store created,sent,reply timestamps
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class Ping extends Command {
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constructor(callback) {
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super();
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this.onResult = callback;
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}
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start(packet, connection) {
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const ping = new Packet(
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0,
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Buffer.from([1, 0, 0, 0, CommandCode.PING]),
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0,
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5
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);
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connection.writePacket(ping);
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return Ping.prototype.pingResponse;
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}
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pingResponse() {
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// TODO: check it's OK packet. error check already done in caller
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if (this.onResult) {
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process.nextTick(this.onResult.bind(this));
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}
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return null;
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}
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}
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module.exports = Ping;
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