open Types
open Utils
let header_to_bytes header =
new_buffer
header
[ header.id
; header.flags
; header.num_questions
; header.num_answers
; header.num_authorities
; header.num_additionals
]
;;
let question_to_bytes question =
let buffer = new_buffer question [ question.type_; question.class_ ] in
Bytes.cat buffer question.name
let encode_dns_name domain_name =
let parts = String.split_on_char '.' domain_name in
let encoded_parts =
List.map
(fun part ->
let len_part = String.length part in
let len_byte = Char.chr len_part in
Bytes.cat (Bytes.of_string (String.make 1 len_byte)) (Bytes.of_string part))
parts
in
Bytes.cat (Bytes.concat Bytes.empty encoded_parts) (Bytes.of_string "\x00")
