Module rdata

Resource record data handling.

DNS resource records consist of some common data defining the domain name they pertain to, their type and class, and finally record data the format of which depends on the specific record type. As there are currently more than eighty record types, having a giant enum for record data seemed like a bad idea. Instead, resource records are generic over two traits defined by this module. All types representimg resource record data implement RecordData. Types that can be parsed out of messages also implement ParseRecordData. This distinction is only relevant for types that contain and are generic over domain names: for these, parsing is only available if the names use [ParsedDname].

While RecordData allows types to provide different record types for different values, most types actually implement one specific record type. For these types, implementing RtypeRecordData provides a shortcut to implementin both RecordData and [ParseRecordDate] with a constant record type.

All such implementations for a specific record type shipped with the domain crate are collected in the domain::rdata module.

A type implementing the traits for any record type is available in here too: UnknownRecordData. It stores the actual record data in its encoded form in a bytes value.

Structs

UnknownRecordData

A type for parsing any type of record data.

Traits

ParseRecordData

A record data type that can be parsed from a message.

RecordData

A type that represents record data.

RtypeRecordData

A type for record data for a single specific record type.