Replace DnDns with HeijdenDns

HeijdenDns seems to do a better job at querying SRV records

MinecraftClient/Protocol/Dns/RR.cs

@@ -0,0 +1,156 @@
+using System;
+
+namespace Heijden.DNS
+{
+	#region RFC info
+	/*
+	3.2. RR definitions
+
+	3.2.1. Format
+
+	All RRs have the same top level format shown below:
+
+										1  1  1  1  1  1
+		  0  1  2  3  4  5  6  7  8  9  0  1  2  3  4  5
+		+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+		|                                               |
+		/                                               /
+		/                      NAME                     /
+		|                                               |
+		+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+		|                      TYPE                     |
+		+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+		|                     CLASS                     |
+		+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+		|                      TTL                      |
+		|                                               |
+		+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+		|                   RDLENGTH                    |
+		+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--|
+		/                     RDATA                     /
+		/                                               /
+		+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+
+
+	where:
+
+	NAME            an owner name, i.e., the name of the node to which this
+					resource record pertains.
+
+	TYPE            two octets containing one of the RR TYPE codes.
+
+	CLASS           two octets containing one of the RR CLASS codes.
+
+	TTL             a 32 bit signed integer that specifies the time interval
+					that the resource record may be cached before the source
+					of the information should again be consulted.  Zero
+					values are interpreted to mean that the RR can only be
+					used for the transaction in progress, and should not be
+					cached.  For example, SOA records are always distributed
+					with a zero TTL to prohibit caching.  Zero values can
+					also be used for extremely volatile data.
+
+	RDLENGTH        an unsigned 16 bit integer that specifies the length in
+					octets of the RDATA field.
+
+	RDATA           a variable length string of octets that describes the
+					resource.  The format of this information varies
+					according to the TYPE and CLASS of the resource record.
+	*/
+	#endregion
+
+	/// <summary>
+	/// Resource Record (rfc1034 3.6.)
+	/// </summary>
+	public class RR
+	{
+		/// <summary>
+		/// The name of the node to which this resource record pertains
+		/// </summary>
+		public string NAME;
+
+		/// <summary>
+		/// Specifies type of resource record
+		/// </summary>
+		public Type Type;
+
+		/// <summary>
+		/// Specifies type class of resource record, mostly IN but can be CS, CH or HS 
+		/// </summary>
+		public Class Class;
+
+		/// <summary>
+		/// Time to live, the time interval that the resource record may be cached
+		/// </summary>
+		public uint TTL
+		{
+			get
+			{
+				return (uint)Math.Max(0, m_TTL - TimeLived);
+			}
+			set
+			{
+				m_TTL = value;
+			}
+		}
+		private uint m_TTL;
+
+		/// <summary>
+		/// 
+		/// </summary>
+		public ushort RDLENGTH;
+
+		/// <summary>
+		/// One of the Record* classes
+		/// </summary>
+		public Record RECORD;
+
+		public int TimeLived;
+
+		public RR(RecordReader rr)
+		{
+			TimeLived = 0;
+			NAME = rr.ReadDomainName();
+			Type = (Type)rr.ReadUInt16();
+			Class = (Class)rr.ReadUInt16();
+			TTL = rr.ReadUInt32();
+			RDLENGTH = rr.ReadUInt16();
+			RECORD = rr.ReadRecord(Type);
+			RECORD.RR = this;
+		}
+
+		public override string ToString()
+		{
+			return string.Format("{0,-32} {1}\t{2}\t{3}\t{4}",
+				NAME,
+				TTL,
+				Class,
+				Type,
+				RECORD);
+		}
+	}
+
+	public class AnswerRR : RR
+	{
+		public AnswerRR(RecordReader br)
+			: base(br)
+		{
+		}
+	}
+
+	public class AuthorityRR : RR
+	{
+		public AuthorityRR(RecordReader br)
+			: base(br)
+		{
+		}
+	}
+
+	public class AdditionalRR : RR
+	{
+		public AdditionalRR(RecordReader br)
+			: base(br)
+		{
+		}
+	}
+}