Response

Response is the logical representation of the byte data returned from a DNS query. It is constructed internally (by Resolver.Lookup) from a raw UDP reply byte array and exposes the parsed header flags and resource-record arrays.

Purpose

• Parse a raw DNS reply byte array into strongly-typed header flags and resource-record collections.
• Expose the parsed ReturnCode, questions, and answer/name-server/additional-record arrays to the caller.

Context

• Namespace: SAIF.Framework.DNS
• Assembly/package: SAIF.BOF.Framework.DNS

Public members

Member	Signature	Purpose
ReturnCode	public ReturnCode ReturnCode { get; }	The DNS response code from the reply header.
AuthoritativeAnswer	public bool AuthoritativeAnswer { get; }	Whether the responding server is authoritative for the queried domain.
RecursionAvailable	public bool RecursionAvailable { get; }	Whether the responding server supports recursive queries.
MessageTruncated	public bool MessageTruncated { get; }	Whether the reply message was truncated.
Questions	public Question[] Questions { get; }	The questions echoed back in the reply.
Answers	public Answer[] Answers { get; }	The answer-section resource records.
NameServers	public NameServer[] NameServers { get; }	The authority-section (name server) resource records.
AdditionalRecords	public AdditionalRecord[] AdditionalRecords { get; }	The additional-section resource records.

Behavioral notes

• Response has no public constructor; instances are created internally (internal Response(byte[] message)) by Resolver.Lookup.
• All properties are read-only and populated entirely during construction from the supplied byte array.
• Enforces BR-007: if an embedded Question cannot be parsed, construction aborts and InvalidResponseException is thrown instead of yielding a partially-parsed Response.
• Question/Answer/NameServer/AdditionalRecord arrays are sized directly from the corresponding count fields in the reply header (bytes 4-11) before being populated.

Sources

• SAIF.Framework.DNS\Response.cs