1 var spawn = require('child_process').spawn;
2 var cluster = require('cluster');
3 var http = require('http');
14 for (var i = 2; i < process.argv.length; ++i) {
15 var args = process.argv[i].split('=', 2);
21 switch (options.mode) {
22 case 'master': startMaster(); break;
23 case 'server': startServer(); break;
24 case 'client': startClient(); break;
25 default: throw new Error('Bad mode: ' + options.mode);
28 process.title = 'http_bench[' + options.mode + ']';
30 // monkey-patch the log functions so they include name + pid
31 console.log = patch(console.log);
32 console.trace = patch(console.trace);
33 console.error = patch(console.error);
36 var prefix = process.title + '[' + process.pid + '] ';
38 var args = Array.prototype.slice.call(arguments);
39 args[0] = prefix + args[0];
40 return fun.apply(console, args);
44 function startMaster() {
45 if (!cluster.isMaster) return startServer();
47 for (var i = ~~options.servers; i > 0; --i) cluster.fork();
49 for (var i = ~~options.clients; i > 0; --i) {
50 var cp = spawn(process.execPath, [__filename, 'mode=client']);
51 cp.stdout.pipe(process.stdout);
52 cp.stderr.pipe(process.stderr);
56 function startServer() {
57 http.createServer(onRequest).listen(options.port, options.host);
59 var body = Array(1024).join('x');
60 var headers = {'Content-Length': '' + body.length};
62 function onRequest(req, res) {
63 req.on('error', onError);
64 res.on('error', onError);
65 res.writeHead(200, headers);
69 function onError(err) {
70 console.error(err.stack);
74 function startClient() {
75 // send off a bunch of concurrent requests
76 // TODO make configurable
80 function sendRequest() {
81 var req = http.request(options, onConnection);
82 req.on('error', onError);
86 // add a little back-off to prevent EADDRNOTAVAIL errors, it's pretty easy
87 // to exhaust the available port range
88 function relaxedSendRequest() {
89 setTimeout(sendRequest, 1);
92 function onConnection(res) {
93 res.on('error', onError);
94 res.on('data', onData);
95 res.on('end', relaxedSendRequest);
98 function onError(err) {
99 console.error(err.stack);
100 relaxedSendRequest();
103 function onData(data) {
104 // this space intentionally left blank