Module Zl

ZLIB layer.

ZLIB is a standard on top of RFC1951. It uses the De implementation with the LZ77 compression algorithm. Module provides non-blocking streaming codec to decode and encode ZLIB encoding. It can efficiently work payload by payload without blocking IO.

ZLIB Decoder.

Unlike de, zl provides a referentially transparent Inf.decoder. The client must use a Inf.decoder given by Inf.decode instead of a decoder given to Inf.decode. A common use of zl is:

let rec go d0 = match Inf.decode d0 with
  | `Await d1 -> ... go d1
  | `Flush d1 -> ... go d1
  | _ -> ... in

ZLIB Encoder.

ZLIB encoder is glue between the LZ77 algorithm and the DEFLATE encoder, prefixed with a ZLIB header. Any deal with compression algorithm is not possible on this layer (see De for more details). As Inf, and unlike De, Zl provides a referentially transparent encoder.

The client must use the Def.encoder given by Def.encode instead a encoder given to Def.encode.