Hi, I´m streaming content using lazy bytestrings in a web application. The problem is that the output comes in huge blobs (presumably of 32k) one at a time. This is good for some purposes, but not for console-like interfaces or runtime log visualization. (one of my purposes is to web-alize ghci. I know that this can be done without streaming the standard output, but I want it that way). I can not control when the IO bytestring primitives flush the data to the stream, because this is not part of my application (nor does it should do it). I suppose here that it is in a chunk by chunk basis. But maybe I misinterpreted something or everything. I use the package hack with the server hack-handler-simpleserver. this serves does Data.ByteString.hPut the bytestring content... I use mappend to add content to the stream. mappend uses "append" which uses. "foldrChunks" which seems not to compact two bytestrings in max size chunks . So I do not know what happens. The question is: are there some way to control bytestring streaming?. Can It be done without the stream handler? Alberto.