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code refactoring done

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This commit is contained in:
Shreyas Zare
2019-03-24 15:10:40 +05:30
parent 7a96be9609
commit 9308933db2
1 changed files with 22 additions and 20 deletions
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42
DnsServerCore/DnsServer.cs
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@@ -1119,16 +1119,9 @@ namespace DnsServerCore
{
//query cache zone to see if answer available
{
DnsDatagram cacheResponse = _cacheZoneRoot.Query(request);
if (cacheResponse.Header.RCODE != DnsResponseCode.Refused)
{
if ((cacheResponse.Answer.Length > 0) || ((cacheResponse.Authority.Length == 0) || (cacheResponse.Authority[0].Type == DnsResourceRecordType.SOA)))
{
cacheResponse.Tag = "cacheHit";
return cacheResponse;
}
}
DnsDatagram cacheResponse = QueryCache(request);
if (cacheResponse != null)
return cacheResponse;
}
//recursion with locking
@@ -1146,16 +1139,9 @@ namespace DnsServerCore
//query cache zone again to see if answer available
{
DnsDatagram cacheResponse = _cacheZoneRoot.Query(request);
if (cacheResponse.Header.RCODE != DnsResponseCode.Refused)
{
if ((cacheResponse.Answer.Length > 0) || ((cacheResponse.Authority.Length == 0) || (cacheResponse.Authority[0].Type == DnsResourceRecordType.SOA)))
{
cacheResponse.Tag = "cacheHit";
return cacheResponse;
}
}
DnsDatagram cacheResponse = QueryCache(request);
if (cacheResponse != null)
return cacheResponse;
}
//no response available in cache so respond with server failure
@@ -1194,6 +1180,22 @@ namespace DnsServerCore
}
}
private DnsDatagram QueryCache(DnsDatagram request)
{
DnsDatagram cacheResponse = _cacheZoneRoot.Query(request);
if (cacheResponse.Header.RCODE != DnsResponseCode.Refused)
{
if ((cacheResponse.Answer.Length > 0) || (cacheResponse.Authority.Length == 0) || (cacheResponse.Authority[0].Type == DnsResourceRecordType.SOA))
{
cacheResponse.Tag = "cacheHit";
return cacheResponse;
}
}
return null;
}
#endregion
#region public