Module types

Structs

• DomainName
  A domain name is a sequence of labels, where each label is a length octet followed by that number of octets.
• Header
  Common header type for all messages.
• Label
  A label is just a sequence of octets, which are compared as case-insensitive ASCII. A label can be no longer than 63 octets.
• Message
  Basic DNS message format, used for both queries and responses.
• OpcodeReserved
  A struct with a private constructor, to ensure invalid Opcodes cannot be created.
• Question
  The question section has a list of questions (usually 1 but possibly more) being asked. This is the structure for a single question.
• RcodeReserved
  A struct with a private constructor, to ensure invalid Rcodes cannot be created.
• RecordClassUnknown
  A struct with a private constructor, to ensure invalid RecordClasses cannot be created.
• RecordTypeUnknown
  A struct with a private constructor, to ensure invalid RecordTypes cannot be created.
• ResourceRecord
  The answer, authority, and additional sections are all the same format: a variable number of resource records. This is the structure for a single resource record.

Enums

• DomainNameFromStr
  Errors that can arise when converting a &str into a DomainName.
• LabelTryFromOctetsError
  Errors that can arise when converting a [u8] into a Label.
• Opcode
  What sort of query this is.
• QueryClass
  Query classes are a superset of record classes.
• QueryType
  Query types are a superset of record types.
• Rcode
  What sort of response this is.
• RecordClass
  Record classes are used by resource records and by queries.
• RecordClassFromStr
  Errors that can arise when converting a &str into a RecordClass.
• RecordType
  Record types are used by resource records and by queries.
• RecordTypeFromStr
  Errors that can arise when converting a &str into a RecordType.
• RecordTypeWithData
  A record type with its associated, deserialised, data.

Constants

• DOMAINNAME_MAX_LEN
  Maximum encoded length of a domain name. The number of labels plus sum of the lengths of the labels.
• HEADER_MASK_AA
  Octet mask for the AA flag being set (authoritative)
• HEADER_MASK_OPCODE
  Octet mask for the opcode field.
• HEADER_MASK_QR
  Octet mask for the QR flag being set (response).
• HEADER_MASK_RA
  Octet mask for the RA flag being set (available)
• HEADER_MASK_RCODE
  Octet mask for the rcode field.
• HEADER_MASK_RD
  Octet mask for the RD flag being set (desired)
• HEADER_MASK_TC
  Octet mask for the TC flag being set (truncated)
• HEADER_OFFSET_OPCODE
  Offset for the opcode field.
• HEADER_OFFSET_RCODE
  Offset for the rcode field.
• LABEL_MAX_LEN
  Maximum length of a single label in a domain name.