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refactor(cli): allow running in node projects #21

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289 changes: 10 additions & 279 deletions cli.js
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Original file line number Diff line number Diff line change
@@ -1,289 +1,20 @@
#!/usr/bin/env node
const speedTest = require('./index')
const { bold, green } = require('./chalk.js');

const { performance } = require('perf_hooks');
const https = require('https');
const { magenta, bold, yellow, green, blue } = require('./chalk.js');
const stats = require('./stats.js');

async function get(hostname, path) {
return new Promise((resolve, reject) => {
const req = 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 function fetchServerLocationData() {
const res = JSON.parse(await get('speed.cloudflare.com', '/locations'));

return res.reduce((data, { iata, city }) => {
// Bypass prettier "no-assign-param" rules
const data1 = data;

data1[iata] = city;
return data1;
}, {});
}

function 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 get('speed.cloudflare.com', '/cdn-cgi/trace').then(parseCfCdnCgiTrace);
}

function request(options, data = '') {
let started;
let dnsLookup;
let tcpHandshake;
let sslHandshake;
let ttfb;
let ended;

return new Promise((resolve, reject) => {
started = performance.now();
const req = https.request(options, (res) => {
res.once('readable', () => {
ttfb = performance.now();
});
res.on('data', () => {});
res.on('end', () => {
ended = performance.now();
resolve([
started,
dnsLookup,
tcpHandshake,
sslHandshake,
ttfb,
ended,
parseFloat(res.headers['server-timing'].slice(22)),
]);
});
});

req.on('socket', (socket) => {
socket.on('lookup', () => {
dnsLookup = performance.now();
});
socket.on('connect', () => {
tcpHandshake = performance.now();
});
socket.on('secureConnect', () => {
sslHandshake = performance.now();
});
});

req.on('error', (error) => {
reject(error);
});

req.write(data);
req.end();
});
}

function download(bytes) {
const options = {
hostname: 'speed.cloudflare.com',
path: `/__down?bytes=${bytes}`,
method: 'GET',
};

return request(options);
}

function upload(bytes) {
const data = '0'.repeat(bytes);
const options = {
hostname: 'speed.cloudflare.com',
path: '/__up',
method: 'POST',
headers: {
'Content-Length': Buffer.byteLength(data),
},
};

return request(options, data);
}

function measureSpeed(bytes, duration) {
return (bytes * 8) / (duration / 1000) / 1e6;
}

async function measureLatency() {
const measurements = [];

for (let i = 0; i < 20; i += 1) {
await download(1000).then(
(response) => {
// TTFB - Server processing time
measurements.push(response[4] - response[0] - response[6]);
},
(error) => {
console.log(`Error: ${error}`);
}
);
}

return [
Math.min(...measurements),
Math.max(...measurements),
stats.average(measurements),
stats.median(measurements),
stats.jitter(measurements),
];
}

async function measureDownload(bytes, iterations) {
const measurements = [];

for (let i = 0; i < iterations; i += 1) {
await download(bytes).then(
(response) => {
const transferTime = response[5] - response[4];
measurements.push(measureSpeed(bytes, transferTime));
},
(error) => {
console.log(`Error: ${error}`);
}
);
}

return measurements;
}

async function measureUpload(bytes, iterations) {
const measurements = [];

for (let i = 0; i < iterations; i += 1) {
await upload(bytes).then(
(response) => {
const transferTime = response[6];
measurements.push(measureSpeed(bytes, transferTime));
},
(error) => {
console.log(`Error: ${error}`);
}
);
}

return measurements;
}

function logInfo(text, data) {
console.log(bold(' '.repeat(15 - text.length), `${text}:`, blue(data)));
}

function logLatency(data) {
console.log(bold(' Latency:', magenta(`${data[3].toFixed(2)} ms`)));
console.log(bold(' Jitter:', magenta(`${data[4].toFixed(2)} ms`)));
}

function logSpeedTestResult(size, test) {
const speed = stats.median(test).toFixed(2);
console.log(
bold(' '.repeat(9 - size.length), size, 'speed:', yellow(`${speed} Mbps`))
);
}

function logDownloadSpeed(tests) {
function logSpeed(label, speed) {
console.log(
bold(
' Download speed:',
green(stats.quartile(tests, 0.9).toFixed(2), 'Mbps')
` ${label}:`,
green(speed, 'Mbps')
)
);
}

function logUploadSpeed(tests) {
console.log(
bold(
' Upload speed:',
green(stats.quartile(tests, 0.9).toFixed(2), 'Mbps')
)
);
}

async function speedTest() {
const [ping, serverLocationData, { ip, loc, colo }] = await Promise.all([
measureLatency(),
fetchServerLocationData(),
fetchCfCdnCgiTrace(),
]);

const city = serverLocationData[colo];
logInfo('Server location', `${city} (${colo})`);
logInfo('Your IP', `${ip} (${loc})`);

logLatency(ping);

const testDown1 = await measureDownload(101000, 10);
logSpeedTestResult('100kB', testDown1);

const testDown2 = await measureDownload(1001000, 8);
logSpeedTestResult('1MB', testDown2);

const testDown3 = await measureDownload(10001000, 6);
logSpeedTestResult('10MB', testDown3);

const testDown4 = await measureDownload(25001000, 4);
logSpeedTestResult('25MB', testDown4);

const testDown5 = await measureDownload(100001000, 1);
logSpeedTestResult('100MB', testDown5);

const downloadTests = [
...testDown1,
...testDown2,
...testDown3,
...testDown4,
...testDown5,
];
logDownloadSpeed(downloadTests);

const testUp1 = await measureUpload(11000, 10);
const testUp2 = await measureUpload(101000, 10);
const testUp3 = await measureUpload(1001000, 8);
const uploadTests = [...testUp1, ...testUp2, ...testUp3];
logUploadSpeed(uploadTests);
const cli = async () => {
const {downloadSpeed, uploadSpeed} = await speedTest();
logSpeed('Upload Speed', uploadSpeed);
logSpeed('Download Speed', downloadSpeed);
}

speedTest();
cli();
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