Serve accepts incoming FastCGI connections on the listener l, creating a new goroutine for each.

ErrConnClosed is returned by Read when a handler attempts to read the body of a request after the connection to the web server has been closed.

ErrRequestAborted is returned by Read when a handler attempts to read the body of a request that has been aborted by the web server.

Request holds the state for an in-progress request.

A ResponseWriter interface is used by an HTTP handler to construct an HTTP response.