monkeypatch socket.io to work with nginx with buffering on (e.g. dotcloud)

gistfile1.js

var monkeypatch = function(io) {
  io.configure(function(){
    io.set("transports", ["xhr-polling"]);
    io.set("polling duration", 10);
  });
  io.handleRequest = _.wrap(io.handleRequest, function(next, req, res) {
    res.writeHead = _.wrap(res.writeHead, function(next, status, headers) {
      if (headers) { delete headers.Connection; }
      return next.call(this, status, headers);
    });
    return next.call(this, req, res);
  });
  return io;
};