Changes header table size of the |Deflater| to |settings_hd_table_bufsize_max| bytes. This may trigger eviction in the dynamic table.
Deflates the |hfa|, which has |hfa.length| header fields, into the |buf| of length |buf.length|.
Returns an upper bound on the compressed size after deflation of |hfa|
The upper limit of the header table size the deflater accepts.
Minimum header table size notified in the next context update
If nonzero, send header table size using encoding context update in the next deflate process