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// test the speed of .pipe() with sockets
var common = require('../common.js');
var PORT = common.PORT;
var bench = common.createBenchmark(main, {
len: [102400, 1024 * 1024 * 16],
type: ['utf', 'asc', 'buf'],
dur: [5],
});
var dur;
var len;
var type;
var chunk;
var encoding;
function main(conf) {
dur = +conf.dur;
len = +conf.len;
type = conf.type;
switch (type) {
case 'buf':
chunk = new Buffer(len);
chunk.fill('x');
break;
case 'utf':
encoding = 'utf8';
chunk = new Array(len / 2 + 1).join('ü');
break;
case 'asc':
encoding = 'ascii';
chunk = new Array(len + 1).join('x');
break;
default:
throw new Error('invalid type: ' + type);
break;
}
server();
}
var net = require('net');
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() {};
function Reader() {
this.flow = this.flow.bind(this);
this.readable = true;
}
Reader.prototype.pipe = function(dest) {
this.dest = dest;
this.flow();
return dest;
};
Reader.prototype.flow = function() {
var dest = this.dest;
var res = dest.write(chunk, encoding);
if (!res)
dest.once('drain', this.flow);
else
process.nextTick(this.flow);
};
function server() {
var reader = new Reader();
var writer = new Writer();
// the actual benchmark.
var server = net.createServer(function(socket) {
socket.pipe(writer);
});
server.listen(PORT, function() {
var socket = net.connect(PORT);
socket.on('connect', function() {
bench.start();
reader.pipe(socket);
setTimeout(function() {
var bytes = writer.received;
var gbits = (bytes * 8) / (1024 * 1024 * 1024);
bench.end(gbits);
}, dur * 1000);
});
});
}