Safe Haskell	None

Network.DNS.Types

Contents

Domain
Resource Records
- Resource Record Type
DNS Error
DNS Format
DNS Header
DNS Flags
DNS Body

Description

Data types for DNS Query and Response. For more information, see http://www.ietf.org/rfc/rfc1035.

Synopsis

Domain

type Domain = ByteString Source

Type for domain.

Resource Records

type ResourceRecord = RR RDATA Source

data RR a Source

Raw data format for resource records.

Constructors

ResourceRecord
Fields rrname :: Domain rrtype :: TYPE rrttl :: Int rdlen :: Int rdata :: a

Instances

Functor RR
Foldable RR
Traversable RR
Eq a => Eq (RR a)
Show a => Show (RR a)

type RDATA = RD [Int]Source

data RD a Source

Raw data format for each type.

Constructors

RD_NS Domain
RD_CNAME Domain
RD_DNAME Domain
RD_MX Int Domain
RD_PTR Domain
RD_SOA Domain Domain Int Int Int Int Int
RD_A IPv4
RD_AAAA IPv6
RD_TXT ByteString
RD_SRV Int Int Int Domain
RD_OTH a

Instances

Functor RD
Foldable RD
Traversable RD
Eq a => Eq (RD a)
Show a => Show (RD a)

rrMapWithType :: (TYPE -> a -> b) -> RR a -> RR bSource

Like fmap except that RR TYPE context is available within the map.

Resource Record Type

data TYPE Source

Types for resource records.

Constructors

A
AAAA
NS
TXT
MX
CNAME
SOA
PTR
SRV
DNAME
UNKNOWN Int

Instances

Eq TYPE
Read TYPE
Show TYPE

intToType :: Int -> TYPE Source

typeToInt :: TYPE -> Int Source

toType :: String -> TYPE Source

DNS Error

data DNSError Source

An enumeration of all possible DNS errors that can occur.

Constructors

SequenceNumberMismatch	The sequence number of the answer doesn't match our query. This could indicate foul play.
TimeoutExpired	The request simply timed out.
UnexpectedRDATA	The answer has the correct sequence number, but returned an unexpected RDATA format.
IllegalDomain	The domain for query is illegal.
FormatError	The name server was unable to interpret the query.
ServerFailure	The name server was unable to process this query due to a problem with the name server.
NameError	Meaningful only for responses from an authoritative name server, this code signifies that the domain name referenced in the query does not exist.
NotImplemented	The name server does not support the requested kind of query.
OperationRefused	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.

Instances

Eq DNSError
Show DNSError
Typeable DNSError
Exception DNSError

DNS Format

type DNSFormat = DNSMessage RDATA Source

data DNSMessage a Source

Raw data format for DNS Query and Response.

Constructors

DNSFormat
Fields header :: DNSHeader question :: [Question] answer :: [RR a] authority :: [RR a] additional :: [RR a]

Instances

Functor DNSMessage
Foldable DNSMessage
Traversable DNSMessage
Eq a => Eq (DNSMessage a)
Show a => Show (DNSMessage a)

dnsMapWithType :: (TYPE -> a -> b) -> DNSMessage a -> DNSMessage bSource

Like fmap except that RR TYPE context is available within the map.

dnsTraverseWithType :: Applicative f => (TYPE -> a -> f b) -> DNSMessage a -> f (DNSMessage b)Source

Behaves exactly like a regular traverse except that the traversing function also has access to the RR TYPE associated with a value.

DNS Header

data DNSHeader Source

Raw data format for the header of DNS Query and Response.

Constructors

DNSHeader
Fields identifier :: Int flags :: DNSFlags qdCount :: Int anCount :: Int nsCount :: Int arCount :: Int

Instances

Eq DNSHeader
Show DNSHeader

DNS Flags

data DNSFlags Source

Raw data format for the flags of DNS Query and Response.

Constructors

DNSFlags
Fields qOrR :: QorR opcode :: OPCODE authAnswer :: Bool trunCation :: Bool recDesired :: Bool recAvailable :: Bool rcode :: RCODE

Instances

Eq DNSFlags
Show DNSFlags

DNS Body

data QorR Source

Constructors

QR_Query
QR_Response

Instances

Eq QorR
Show QorR

data OPCODE Source

Constructors

OP_STD
OP_INV
OP_SSR

Instances

Enum OPCODE
Eq OPCODE
Show OPCODE

data RCODE Source

Constructors

NoErr
FormatErr
ServFail
NameErr
NotImpl
Refused

Instances

Enum RCODE
Eq RCODE
Show RCODE

data Question Source

Raw data format for DNS questions.

Constructors

Question
Fields qname :: Domain qtype :: TYPE

Instances

Eq Question
Show Question

responseA :: Int -> Question -> IPv4 -> DNSFormat Source

responseAAAA :: Int -> Question -> IPv6 -> DNSFormat Source