@pushrocks/smartnetwork
Version:
network diagnostics
199 lines • 17.2 kB
JavaScript
import * as plugins from './smartnetwork.plugins.js';
import * as stats from './helpers/stats.js';
export class CloudflareSpeed {
constructor() { }
async speedTest() {
const latency = await this.measureLatency();
const serverLocations = await this.fetchServerLocations();
const cgiData = await this.fetchCfCdnCgiTrace();
// lets test the download speed
const testDown1 = await this.measureDownload(101000, 10);
const testDown2 = await this.measureDownload(1001000, 8);
const testDown3 = await this.measureDownload(10001000, 6);
const testDown4 = await this.measureDownload(25001000, 4);
const testDown5 = await this.measureDownload(100001000, 1);
const downloadTests = [...testDown1, ...testDown2, ...testDown3, ...testDown4, ...testDown5];
const speedDownload = stats.quartile(downloadTests, 0.9).toFixed(2);
// lets test the upload speed
const testUp1 = await this.measureUpload(11000, 10);
const testUp2 = await this.measureUpload(101000, 10);
const testUp3 = await this.measureUpload(1001000, 8);
const uploadTests = [...testUp1, ...testUp2, ...testUp3];
const speedUpload = stats.quartile(uploadTests, 0.9).toFixed(2);
return {
...latency,
ip: cgiData.ip,
serverLocation: {
shortId: cgiData.colo,
name: serverLocations[cgiData.colo],
availableLocations: serverLocations,
},
downloadSpeed: speedDownload,
uploadSpeed: speedUpload,
};
}
async measureLatency() {
const measurements = [];
for (let i = 0; i < 20; i += 1) {
await this.download(1000).then((response) => {
// TTFB - Server processing time
measurements.push(response[4] - response[0] - response[6]);
}, (error) => {
console.log(`Error: ${error}`);
});
}
return {
maxTime: Math.max(...measurements),
minTime: Math.min(...measurements),
averageTime: stats.average(measurements),
medianTime: stats.median(measurements),
jitter: stats.jitter(measurements),
};
}
async measureDownload(bytes, iterations) {
const measurements = [];
for (let i = 0; i < iterations; i += 1) {
await this.download(bytes).then(async (response) => {
const transferTime = response[5] - response[4];
measurements.push(await this.measureSpeed(bytes, transferTime));
}, (error) => {
console.log(`Error: ${error}`);
});
}
return measurements;
}
async measureUpload(bytes, iterations) {
const measurements = [];
for (let i = 0; i < iterations; i += 1) {
await this.upload(bytes).then(async (response) => {
const transferTime = response[6];
measurements.push(await this.measureSpeed(bytes, transferTime));
}, (error) => {
console.log(`Error: ${error}`);
});
}
return measurements;
}
async measureSpeed(bytes, duration) {
return (bytes * 8) / (duration / 1000) / 1e6;
}
async fetchServerLocations() {
const res = JSON.parse(await this.get('speed.cloudflare.com', '/locations'));
return res.reduce((data, optionsArg) => {
// Bypass prettier "no-assign-param" rules
const data1 = data;
data1[optionsArg.iata] = optionsArg.city;
return data1;
}, {});
}
async get(hostname, path) {
return new Promise((resolve, reject) => {
const req = plugins.https.request({
hostname,
path,
method: 'GET',
}, (res) => {
const body = [];
res.on('data', (chunk) => {
body.push(chunk);
});
res.on('end', () => {
try {
resolve(Buffer.concat(body).toString());
}
catch (e) {
reject(e);
}
});
req.on('error', (err) => {
reject(err);
});
});
req.end();
});
}
async download(bytes) {
const options = {
hostname: 'speed.cloudflare.com',
path: `/__down?bytes=${bytes}`,
method: 'GET',
};
return this.request(options);
}
async upload(bytes) {
const data = '0'.repeat(bytes);
const options = {
hostname: 'speed.cloudflare.com',
path: '/__up',
method: 'POST',
headers: {
'Content-Length': Buffer.byteLength(data),
},
};
return this.request(options, data);
}
async request(options, data = '') {
let started;
let dnsLookup;
let tcpHandshake;
let sslHandshake;
let ttfb;
let ended;
return new Promise((resolve, reject) => {
started = plugins.perfHooks.performance.now();
const req = plugins.https.request(options, (res) => {
res.once('readable', () => {
ttfb = plugins.perfHooks.performance.now();
});
res.on('data', () => { });
res.on('end', () => {
ended = plugins.perfHooks.performance.now();
resolve([
started,
dnsLookup,
tcpHandshake,
sslHandshake,
ttfb,
ended,
parseFloat(res.headers['server-timing'].slice(22)),
]);
});
});
req.on('socket', (socket) => {
socket.on('lookup', () => {
dnsLookup = plugins.perfHooks.performance.now();
});
socket.on('connect', () => {
tcpHandshake = plugins.perfHooks.performance.now();
});
socket.on('secureConnect', () => {
sslHandshake = plugins.perfHooks.performance.now();
});
});
req.on('error', (error) => {
reject(error);
});
req.write(data);
req.end();
});
}
async fetchCfCdnCgiTrace() {
const parseCfCdnCgiTrace = (text) => text
.split('\n')
.map((i) => {
const j = i.split('=');
return [j[0], j[1]];
})
.reduce((data, [k, v]) => {
if (v === undefined)
return data;
// Bypass prettier "no-assign-param" rules
const data1 = data;
// Object.fromEntries is only supported by Node.js 12 or newer
data1[k] = v;
return data1;
}, {});
return this.get('speed.cloudflare.com', '/cdn-cgi/trace').then(parseCfCdnCgiTrace);
}
}
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