soundwave.js

/*!
 * Module dependencies.
 */

var connect = require('connect'),
    http = require('http'),
    app = connect();

/**
 * Middleware #1
 */

app.use(function(req, res, next) {
  console.log('middleware #1');
  next();
});

/**
 * Middleware #2
 */

app.use(function(req, res, next) {
  console.log('middleware #2');
  // res.writeHead(200, {'Content-Type': 'text/plain'});
  // res.end('Hello World\n');
  next();
});

/**
 * Public middleware interface.
 * 
 * Delegates to our internal middlware stack.
 */

module.exports = function(req, res, next) {
  app.handle(req, res, next);
};

/**
 * Listener helper.
 */

module.exports.listen = function() {
  var server = http.createServer(module.exports);
  return server.listen.apply(server, arguments);
}

usage.js

/*!
 * Module dependencies.
 */

var connect = require('connect'),
    soundwave = require('./soundwave');

/*!
 * Create a server that uses the soundwave as middleware
 */

// create a server
var app = connect();

// middleware A
app.use(function(req, res, next) {
  console.log('middleware A');
  next();
});

// middleware soundwave
app.use(soundwave);

// middleware B
app.use(function(req, res, next) {
  console.log('middleware B');
  next();
});

// run server
app.listen(3000, function() {
  console.log('running on port 3000');
});