protected override void Decode(IChannelHandlerContext context, DatagramPacket message, List <object> output)
{
IByteBuffer buffer = message.Content;
IDnsResponse response = NewResponse(message, buffer);
bool success = false;
try
{
int questionCount = buffer.ReadUnsignedShort();
int answerCount = buffer.ReadUnsignedShort();
int authorityRecordCount = buffer.ReadUnsignedShort();
int additionalRecordCount = buffer.ReadUnsignedShort();
DecodeQuestions(response, buffer, questionCount);
DecodeRecords(response, DnsSection.ANSWER, buffer, answerCount);
DecodeRecords(response, DnsSection.AUTHORITY, buffer, authorityRecordCount);
DecodeRecords(response, DnsSection.ADDITIONAL, buffer, additionalRecordCount);
output.Add(response);
success = true;
}
finally
{
if (!success)
{
response.Release();
}
}
}
public IDnsResponse Decode(T sender, T recipient, IByteBuffer buffer)
{
int id = buffer.ReadUnsignedShort();
int flags = buffer.ReadUnsignedShort();
if (flags >> 15 == 0)
{
throw new CorruptedFrameException("not a response");
}
IDnsResponse response = NewResponse(
sender,
recipient,
id,
new DnsOpCode((byte)(flags >> 11 & 0xf)), DnsResponseCode.From((flags & 0xf)));
response.IsRecursionDesired = (flags >> 8 & 1) == 1;
response.IsAuthoritativeAnswer = (flags >> 10 & 1) == 1;
response.IsTruncated = (flags >> 9 & 1) == 1;
response.IsRecursionAvailable = (flags >> 7 & 1) == 1;
response.Z = flags >> 4 & 0x7;
bool success = false;
try
{
int questionCount = buffer.ReadUnsignedShort();
int answerCount = buffer.ReadUnsignedShort();
int authorityRecordCount = buffer.ReadUnsignedShort();
int additionalRecordCount = buffer.ReadUnsignedShort();
DecodeQuestions(response, buffer, questionCount);
DecodeRecords(response, DnsSection.ANSWER, buffer, answerCount);
DecodeRecords(response, DnsSection.AUTHORITY, buffer, authorityRecordCount);
DecodeRecords(response, DnsSection.ADDITIONAL, buffer, additionalRecordCount);
success = true;
return(response);
}
finally
{
if (!success)
{
response.Release();
}
}
}