This object is created internally by a HTTP server--not by the user. It is
passed as the second parameter to the `'request'` event. It is a writable stream.
-BUG: `http.ServerResponse` does not yet implement all the throttling
-mechanisms of writable streams. In particiular the return value of `write()`
-is not in line with the interface and it does not emit a `drain` event.
### response.writeHead(statusCode[, reasonPhrase] , headers)
This is a writable stream.
-BUG: `http.ClientRequest` does not yet implement all the throttling
-mechanisms of writable streams. In particiular the return value of `write()`
-is not in line with the interface and it does not emit a `drain` event.
-
This is an `EventEmitter` with the following events:
### Event 'response'