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33 lines
795 B
JavaScript
33 lines
795 B
JavaScript
'use strict';
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const winston = require('winston');
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const ratelimit = module.exports;
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const allowedCalls = 100;
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const timeframe = 10000;
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ratelimit.isFlooding = function (socket) {
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socket.callsPerSecond = socket.callsPerSecond || 0;
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socket.elapsedTime = socket.elapsedTime || 0;
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socket.lastCallTime = socket.lastCallTime || Date.now();
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socket.callsPerSecond += 1;
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const now = Date.now();
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socket.elapsedTime += now - socket.lastCallTime;
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if (socket.callsPerSecond > allowedCalls && socket.elapsedTime < timeframe) {
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winston.warn(`Flooding detected! Calls : ${socket.callsPerSecond}, Duration : ${socket.elapsedTime}`);
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return true;
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}
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if (socket.elapsedTime >= timeframe) {
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socket.elapsedTime = 0;
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socket.callsPerSecond = 0;
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}
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socket.lastCallTime = now;
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return false;
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};
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