Trace one complete file

AAAAAAA → literal A, match(distance1,length6), EOF.

Symbols: literal/length 65,259,272; distance 0 between length and EOF.

Fixed-mode bits

A=001000001 length6=100000011 distance1=0000000 EOF=100010000

34 payload bits → 20 c0 c0 44 00.

Include the header

Fixed header: 44 4c 01 00, four bytes.

Total fixed file: nine bytes.

Dynamic payload uses six bits, but its 405-byte header makes 406 total bytes. A shorter payload can be a much larger file.

Reject before constructing codes

Three one-bit words exceed binary prefix capacity.

A 33-bit word exceeds uint32 storage.

Require EOF, validate both alphabets, and reject backward distance beyond existing output. Incomplete prefix trees remain valid.

Transfer task

Length18 maps to 271; distance128 maps to 127.

An initial match is invalid because no output exists yet.

DL uses a custom header and MSB-first packing; it is not RFC 1951 DEFLATE. EOF ends this block; no checksum authenticates it.