var path = require('path'), exec = require('child_process').exec, http = require('http'); var port = parseInt(process.env.PORT || 8000); console.log('pid ' + process.pid); var fixed = makeString(20 * 1024, 'C'), storedBytes = {}, storedBuffer = {}, storedUnicode = {}; var useDomains = process.env.NODE_USE_DOMAINS; // set up one global domain. if (useDomains) { var domain = require('domain'); var gdom = domain.create(); gdom.on('error', function(er) { console.log('Error on global domain', er); throw er; }); gdom.enter(); } var server = http.createServer(function (req, res) { if (useDomains) { var dom = domain.create(); dom.add(req); dom.add(res); } var commands = req.url.split('/'); var command = commands[1]; var body = ''; var arg = commands[2]; var n_chunks = parseInt(commands[3], 10); var status = 200; if (command == 'bytes') { var n = ~~arg; if (n <= 0) throw new Error('bytes called with n <= 0') if (storedBytes[n] === undefined) { console.log('create storedBytes[n]'); storedBytes[n] = makeString(n, 'C'); } body = storedBytes[n]; } else if (command == 'buffer') { var n = ~~arg; if (n <= 0) throw new Error('buffer called with n <= 0'); if (storedBuffer[n] === undefined) { console.log('create storedBuffer[n]'); storedBuffer[n] = new Buffer(n); for (var i = 0; i < n; i++) { storedBuffer[n][i] = 'C'.charCodeAt(0); } } body = storedBuffer[n]; } else if (command == 'unicode') { var n = ~~arg; if (n <= 0) throw new Error('unicode called with n <= 0'); if (storedUnicode[n] === undefined) { console.log('create storedUnicode[n]'); storedUnicode[n] = makeString(n, '\u263A'); } body = storedUnicode[n]; } else if (command == 'quit') { res.connection.server.close(); body = 'quitting'; } else if (command == 'fixed') { body = fixed; } else if (command == 'echo') { res.writeHead(200, { 'Content-Type': 'text/plain', 'Transfer-Encoding': 'chunked' }); req.pipe(res); return; } else { status = 404; body = 'not found\n'; } // example: http://localhost:port/bytes/512/4 // sends a 512 byte body in 4 chunks of 128 bytes if (n_chunks > 0) { res.writeHead(status, { 'Content-Type': 'text/plain', 'Transfer-Encoding': 'chunked' }); // send body in chunks var len = body.length; var step = Math.floor(len / n_chunks) || 1; for (var i = 0, n = (n_chunks - 1); i < n; ++i) { res.write(body.slice(i * step, i * step + step)); } res.end(body.slice((n_chunks - 1) * step)); } else { var content_length = body.length.toString(); res.writeHead(status, { 'Content-Type': 'text/plain', 'Content-Length': content_length }); res.end(body); } }); function makeString(size, c) { var s = ''; while (s.length < size) { s += c; } return s; } server.listen(port, function () { console.log('Listening at http://127.0.0.1:'+port+'/'); }); process.on('exit', function() { console.error('libuv counters', process.uvCounters()); });