const DNS_TCP_RESPONSE_BUFFER_SIZE: usize = 65_535;Expand description
Buffer capacity for outgoing DNS TCP responses per connection. 65 535 is
the upper bound a single DNS message can reach over TCP (the 16-bit
length prefix cap from RFC 1035 §4.2.2). Picking the cap avoids any
truncation for zone-transfer or large TXT responses while staying well
within memory for the dozen-or-so concurrent connections a local
editor.land catalog ever sees.