Add debugging stuff

bin/main.ml

@@ -1,5 +1,10 @@
 open Dnstoy
 
 let () =
-  print_endline (Utils.get_bytecode (Network.send_request "8.8.8.8" "www.example.com"))
+  let response = Network.send_request "8.8.8.8" "www.example.com" in
+  print_endline (Utils.get_bytecode response);
+  let response', dns_header = Response.parse_header response in
+  let dns_question = Response.parse_question response' in
+  Debug.print_dns_header dns_header;
+  Debug.print_dns_question dns_question
 ;;

lib/debug.ml

@@ -0,0 +1,19 @@
+let print_dns_header (header : Types.dns_header) =
+  Printf.printf
+    "{ id = %d; flags = %d; num_questions = %d; num_answers = %d; num_authorities = %d; \
+     num_additionals = %d }\n"
+    header.id
+    header.flags
+    header.num_questions
+    header.num_answers
+    header.num_authorities
+    header.num_additionals
+;;
+
+let print_dns_question (question : Types.dns_question) =
+  Printf.printf
+    "{ name = '%s'; type_ = %d; class_ = %d }\n"
+    (Bytes.to_string question.name)
+    question.type_
+    question.class_
+;;

lib/dune

@@ -1,4 +1,4 @@
 (library
  (name dnstoy)
- (modules types utils network query response)
+ (modules types utils debug network query response)
  (libraries unix))