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// Test the speed of .pipe() with sockets
'use strict';
const common = require('../common.js');
const net = require('net');
const PORT = common.PORT;
const bench = common.createBenchmark(main, {
len: [4, 8, 16, 32, 64, 128, 512, 1024],
type: ['buf'],
dur: [5],
});
let chunk;
let encoding;
function main({ dur, len, type }) {
switch (type) {
case 'buf':
chunk = Buffer.alloc(len, 'x');
break;
case 'utf':
encoding = 'utf8';
chunk = 'ü'.repeat(len / 2);
break;
case 'asc':
encoding = 'ascii';
chunk = 'x'.repeat(len);
break;
default:
throw new Error(`invalid type: ${type}`);
}
const writer = new Writer();
// The actual benchmark.
const server = net.createServer((socket) => {
socket.pipe(writer);
});
server.listen(PORT, () => {
const socket = net.connect(PORT);
socket.on('connect', () => {
bench.start();
socket.on('drain', send);
send();
setTimeout(() => {
const bytes = writer.received;
const gbits = (bytes * 8) / (1024 * 1024 * 1024);
bench.end(gbits);
process.exit(0);
}, dur * 1000);
function send() {
socket.cork();
while (socket.write(chunk, encoding));
socket.uncork();
}
});
});
}
function Writer() {
this.received = 0;
this.writable = true;
}
Writer.prototype.write = function(chunk, encoding, cb) {
this.received += chunk.length;
if (typeof encoding === 'function')
encoding();
else if (typeof cb === 'function')
cb();
return true;
};
// Doesn't matter, never emits anything.
Writer.prototype.on = function() {};
Writer.prototype.once = function() {};
Writer.prototype.emit = function() {};
Writer.prototype.prependListener = function() {};
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