DNS Header RCode handling class
It should be used internally by Net::DNS::Header class. However, it's still possible to instantiate it directly.
require 'net/dns/header' rcode = Net::DNS::Header::RCode.new 0
The RCode class represents the RCode field in the Header portion of a DNS packet. This field (called Response Code) is used to get informations about the status of a DNS operation, such as a query or an update. These are the values in the original Mockapetris's standard (RFC1035):
0 No error condition
1 Format error - The name server was unable to interpret
the query.
2 Server failure - The name server was
unable to process this query due to a problem with the name server.
3 Name Error - Meaningful only for
responses from an authoritative name server, this code means that the domain name referenced in the query does not exist.
4 Not Implemented - The name server does
not support the requested kind of query.
5 Refused - The name server refuses to
perform the specified operation for policy reasons. For example, a name server may not wish to provide the information to the particular requester, or a name server may not wish to perform a particular operation (e.g., zone transfer) for particular data.
6-15 Reserved for future use.
In the next DNS RFCs, codes 6-15 has been assigned to the following errors:
6 YXDomain
7 YXRRSet
8 NXRRSet
9 NotAuth
10 NotZone
More RCodes has to come for TSIGs and other operations.
Constant for rcode Response Code Format Error
Constant for rcode Response Code Name Error
Constant for rcode Response Code No Error
Constant for rcode Response Code Not Implemented Error
Constant for rcode Response Code Refused Error
Constant for rcode Response Code Server Format Error
Generated with the Darkfish Rdoc Generator 2.