Dtab serialization for Http. Dtabs are encoded into Http
headers with keys
x-dtab-$idx-(a|b)
where $idx is a two-digit integer. These headers are encoded in
pairs: 'a' and 'b' headers must exist for each index. Thus when
header names are lexically sorted, Dtab entries are decoded
pairwise. 'a' denoting prefix, 'b' destination.
Header values are base64-encoded ("standard" alphabet)
Utf8 strings.
Dtab serialization for Http. Dtabs are encoded into Http headers with keys x-dtab-$idx-(a|b) where $idx is a two-digit integer. These headers are encoded in pairs: 'a' and 'b' headers must exist for each index. Thus when header names are lexically sorted, Dtab entries are decoded pairwise. 'a' denoting prefix, 'b' destination.
Header values are base64-encoded ("standard" alphabet) Utf8 strings.