/drip?numbytes=n&duration=s&delay=s&code=code Drips data over a duration after an optional initial delay, then (optionally) returns with the given status code.
/dump/request Returns the given request in its HTTP/1.x wire approximate representation.
/etag/:etag Assumes the resource has the given etag and responds to If-None-Match header with a 200 or 304 and If-Match with a 200 or 412 as appropriate.
/range/1024?duration=s&chunk_size=code Streams n bytes, and allows specifying a Range header to select a subset of the data. Accepts a chunk_size and request duration parameter.