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Zone: caching ANY records implementation issue fixed. TTL set to 60 sec.

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This commit is contained in:
Shreyas Zare
2017-10-29 19:22:16 +05:30
parent 00a17eff41
commit 05d2882b28
1 changed files with 76 additions and 10 deletions
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86
DnsServerCore/Zone.cs
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@@ -423,6 +423,12 @@ namespace DnsServerCore
if (records[0].RDATA is DnsNXRecord)
return new DnsDatagram(new DnsHeader(request.Header.Identifier, true, DnsOpcode.StandardQuery, false, false, request.Header.RecursionDesired, true, false, false, DnsResponseCode.NameError, 1, 0, 1, 0), request.Question, new DnsResourceRecord[] { }, new DnsResourceRecord[] { (records[0].RDATA as DnsNXRecord).Authority }, new DnsResourceRecord[] { });
if (records[0].RDATA is DnsANYRecord)
{
DnsANYRecord anyRR = records[0].RDATA as DnsANYRecord;
return new DnsDatagram(new DnsHeader(request.Header.Identifier, true, DnsOpcode.StandardQuery, false, false, request.Header.RecursionDesired, true, false, false, DnsResponseCode.NoError, 1, Convert.ToUInt16(anyRR.Records.Length), 0, 0), request.Question, anyRR.Records, new DnsResourceRecord[] { }, new DnsResourceRecord[] { });
}
return new DnsDatagram(new DnsHeader(request.Header.Identifier, true, DnsOpcode.StandardQuery, false, false, request.Header.RecursionDesired, true, false, false, DnsResponseCode.NoError, 1, (ushort)records.Length, 0, 0), request.Question, records, new DnsResourceRecord[] { }, new DnsResourceRecord[] { });
}
}
@@ -564,8 +570,13 @@ namespace DnsServerCore
SetRecords(allRecords);
//cache for ANY request
if (response.Question[0].Type == DnsResourceRecordType.ANY)
CreateZone(this, response.Question[0].Name).SetRecords(DnsResourceRecordType.ANY, response.Answer);
if ((response.Question[0].Type == DnsResourceRecordType.ANY) && (response.Answer.Length > 0))
{
DnsResourceRecord anyRR = new DnsResourceRecord(response.Question[0].Name, DnsResourceRecordType.ANY, DnsClass.IN, DEFAULT_RECORD_TTL, new DnsANYRecord(response.Answer));
anyRR.SetExpiry();
CreateZone(this, response.Question[0].Name).SetRecords(DnsResourceRecordType.ANY, new DnsResourceRecord[] { anyRR });
}
}
#endregion
@@ -761,10 +772,6 @@ namespace DnsServerCore
_authority = authority;
}
public DnsNXRecord(Stream s)
: base(s)
{ }
#endregion
#region protected
@@ -824,10 +831,6 @@ namespace DnsServerCore
_authority = authority;
}
public DnsEmptyRecord(Stream s)
: base(s)
{ }
#endregion
#region protected
@@ -871,5 +874,68 @@ namespace DnsServerCore
#endregion
}
class DnsANYRecord : DnsResourceRecordData
{
#region variables
DnsResourceRecord[] _records;
#endregion
#region constructor
public DnsANYRecord(DnsResourceRecord[] records)
{
_records = records;
}
public DnsANYRecord(Stream s)
: base(s)
{ }
#endregion
#region protected
protected override void Parse(Stream s)
{ }
protected override void WriteRecordData(Stream s, List<DnsDomainOffset> domainEntries)
{ }
#endregion
#region public
public override bool Equals(object obj)
{
if (ReferenceEquals(null, obj))
return false;
if (ReferenceEquals(this, obj))
return true;
DnsANYRecord other = obj as DnsANYRecord;
if (other == null)
return false;
return true;
}
public override int GetHashCode()
{
return 0;
}
#endregion
#region properties
public DnsResourceRecord[] Records
{ get { return _records; } }
#endregion
}
}
}