0.10.0

Breaking changes

• All types and functions referring to domain names have been changed from using the term “dname” to just “name.” For instance, Dname has become Name, ToDname has become ToName, and ToDname::to_dname has become ToName::to_name. (#290)
• The ToName and ToRelativeName traits have been changed to have a pair of methods a la try_to_name and to_name for octets builders with limited and unlimited buffers, reflecting the pattern used elsewhere. (#285)
• The types for IANA-registered parameters in base::iana have been changed from enums to a newtypes around their underlying integer type and associated constants for the registered values. (This was really always the better way to structure this.) (#276, #298)
• The Txt record data type now rejects empty record data as invalid. As a consequence TxtBuilder converts an empty builder into TXT record data consisting of one empty character string which requires TxtBuilder::finish to be able to return an error. (#267)
• Txt record data serialization has been redesigned. It now serialized as a sequence of character strings. It also deserializes from such a sequence. If supported by the format, it alternatively deserializes from a string that is broken up into 255 octet chunks if necessary. (#268)
• The text formatting for CharStr has been redesigned. The Display impl now uses a modified version of the representation format that doesn’t escape white space but also doesn’t enclose the string in quotes. Methods for explicitly formatting in quoted and unquoted presentation format are provided. (#270)
• The validate::RrsigExt trait now accepts anything that impls AsRef<Record<..>> to allow the use of smart pointers. (#288 by @hunts)
• The stub resolver now uses the new client transports. This doesn’t change how it is used but does change how it queries the configured servers. (#215)
• The sub resolver’s server configuration Transport type has been changed to be either Transport::UdpTcp for trying UDP and if that leads to a truncated answer try TCP and Transport::Tcp for only trying TCP. The stub resolver uses these accordingly now (#296)
• Many error types have been changed from enums to structs that hide internal error details. Enums have been kept for errors where distinguishing variants might be meaningful for dealing with the error. (#277)
• Renamed Dnskey::is_zsk to is_zone_key. (#292)
• Split RRSIG timestamp handling from Serial into a new type rdata::dnssec::Timestamp. ([#294])
• Upgraded octseq to 0.5. (#257)
• The minimum Rust version is now 1.70. (#304)

New

• Add impls for AsRef<RelativeDname<[u8]>> and Borrow<RelativeDname<[u8]>> to RelativeDname<_>. (#251 by @torin-carey)
• Added name::Chain::fmt_with_dots to format an absolute chained name with a final dot. (#253)
• Added a new ParseAnyRecordData trait for record data types that can parse any type of record data. (#256)
• Added implementations of OctetsFrom and Debug to AllOptData and the specific options types that didn’t have them yet. (#257)
• Added missing ordering impls to ZoneRecordData, AllRecordData, Opt, and SvcbRdata. (#293)
• Added Name::reverse_from_addr that creates a domain name for the reverse lookup of an IP address. (#289)
• Added OptBuilder::clone_from to replace the OPT record with the content of another OPT record. (#299)
• Added Message::for_slice_ref that returns a Message<&[u8]>. (#300)

Bug fixes

• Fixed the display implementation of name::Chain<_, _>. (#253)
• Fixed the display implementation of rdata::Txt<..>. It now displays each embedded character string separately in quoted form. (#259)
• Fixed the extended part returned by OptRcode::to_parts (it was shifted by 4 bits too many) and return all 12 bits for the Int variant in OptRcode::to_int. (#258)
• Fixed a bug in the inplace zonefile parser that made it reject character string of length 255. (#284)

Unstable features

• Added the module net::client with experimental support for client message transport, i.e., sending of requests and receiving responses as well as caching of responses.
  This is gated by the unstable-client-transport feature. (#215,#275)
• Added the module net::server with experimental support for server transports, processing requests through a middleware chain and a service trait.
  This is gated by the unstable-server-transport feature. (#274)
• Added the module zonetree providing basic traits representing a collection of zones and their data. The zonetree::in_memory module provides an in-memory implementation. The zonetree::parsed module provides a way to classify RRsets before inserting them into a tree.
  This is gated by the unstable-zonetree feature. (#286)

0.9.3

Bug fixes

• Fixed various issues preventing building in a no-std environment. (#247 by @dzamlo, #248 by @reitermarkus)

Other changes

• The resolv feature now depends on futures_util instead of futures, trimming unused dependencies from the dependency tree. (#246 by @WhyNotHugo)

0.9.2

New

• Removed the Sized bound for octets types used by the tsig module. (#241 by @torin-carey)
• Added an impl for AsRef<Message<[u8]>> for any message. (#242 by @torin-carey)

Bug fixes

• Fixed in scanning absolute domain names from a zonefile that resulted in illegal wire data being produced. (#240 by [@xofyarg)]

0.9.1

Bug fixes

• Added missing ?Sized bounds to the octets type for parsing ZoneRecordData and UnknownRecordData. (#237 by @hunts)

0.9.0

Breaking changes

• Move the flatten_into method for converting domain names into a straight, flat form into a new FlattenInto trait. This trait is only implemented for types that actually are or contain domain names. (#216)
• Marked various methods and functions that return values without side effects as #[must_use]. ([#228] by @WhyNotHugo)
• Changed the signature of FoundSrvs::merge to use a non-mut other. (#232)
• The minimum Rust version is now 1.67. (#235)

New

• Added support for the ZONEMD record type. (#229 by @xofyarg)
• Re-exported the octseq crate as dep::octseq. (#230)
• Added a blanket impl for mut refs to Composer. (#231 by @xofyarg)

0.8.1

New

• Added a new method FoundSrvs::into_srvs that converts the value into an iterator over the found SRV records without resolving them further. (#174, #214 by @WhyNotHugo); this was added in 0.7.2 but missing in 0.8.0)
• Added impl of Borrow<Dname<[u8]>> and AsRef<Dname<[u8]>> for Dname<_>. (#219 by [@iximeow}], #225)
• Added Dname::fmt_with_dot that can be used when wanting to display a domain name with a dot at the end. (#210)

Bug Fixes

• Fixed trait bounds on FoundSrvs::into_stream to make it usable again. (#174, [#214 by @WhyNotHugo]; this was fixed in 0.7.2 but missing in 0.8.0)
• Fixed scanning of domain names that are just the root label. (#210)
• Fixed util::base64::SymbolConverter to also include the final group in the output if there is padding. (#212)

0.8.0

Breaking Changes

• The minimal required Rust version is now 1.65. (#160)
• The random feature has been dropped in favour of using rand. (#204)
• The generic octets foundation has been moved to a new crate octseq and completely revamped with Generic Associated Types stabilized in Rust 1.65. This required changes all over the code but, hopefully, should result in relatively few changes when using the crate. (#160)
• The range, slice, and split methods on the domain name types have changed. They have been merge into a single method taking ranges – except for those on Dname that require type changes. The split methods now take references and don’t change self anymore. (#160)
• The Parse, Compose, and Scan traits have been demoted to mere extension traits for foreign types (primarily the built-in integers, so that you can do things like u16::parse). All other types now simply have methods matching the patterns. Where generics are necessary, dedicated traits have been added. E.g., there now are ParseRecordData and ComposeRecordData traits that are implemented by all record data types. (#160)
• The Deref and DerefMut impls have been removed for most types that had them to follow guidance that they are exclusively for use by pointer types – which none of them are. len and is_empty methods have been added where appropriate, additional methods may be added. (#205)
• Various functions and methods of the tsig module now expect the current time as an argument to allow use of the module in a no-std environment. (#152)
• Parsing of representation format and zonefiles has been completely re-written. (#142, based on work in #109 by Martin Fischer)
• All types that wrap an octets sequence only now allow unsized octets sequence types. They all have an associated function from_slice to create a reference to a value wrapping an (unsized) octets slice and method for_slice that converts a &self into such a reference. Where the latter already existed but returned a value wrapping a &[u8] (e.g., Dname<_> and Message<_>, the return type has changed accordingly. (#168)
• Removed CharStr::from_bytes. Use CharStr::from_octets instead. (#168)
• Message::from_octets now returns a new error type ShortMessage. (#168)
• Dropped Deref impls for Dname<_>, RelativeDname<_>. (#168)
• Renamed opt::KeyTag::new to opt::KeyTag::from_octets. (#168)
• Renamed rdata::Txt::try_from_slice to build_from_slice. (#168)
• The new method of the following record data types now check whether the wire format representation of the record data is too long and thus returns a result: Tsig<_, _>, Dnskey<_>, Rrsig<_, _>, Ds<_>, Cdnskey<_>, Cds<_>. (#169)
• The new function for rdata::Null<_> has been replaced with a from_octets and from_slice pair. The Deref impl was removed. (#169)
• The rdata::svcb module has been refactored to work in the same way as other type-length-value constructs. The names of types, methods, and functions have changed both to match the usual nomenclature as well as to match the terms used in the SVCB draft. (#176)
• The base::iana::SvcbParamKey type has been renamed to SvcParamKey to match the terms used in the SVCB draft. (#176)
• The TcpKeepalive option has been changed to use an Option<u16> as its data and allow for an empty option in accordance with the RFC. (#185)
• Renamed the sub-modules of rdata that contain record data types to use a name derived from their content rather than their RFC number – with the exception of rdata::rfc1035. (#189)
• Renamed the sub-modules of base::opt that contain option data types to use short-hand names rather than their RFC number. (#190)
• TTL values are now using a newtype base::record::Ttl that wraps the raw u32 and improves conversions. (#202 by @CrabNejonas)
• Changes all option data types to ensure their wire format is at most 65,535 octets long. This requires changing the signatures of some creator functions. Their naming scheme and signatures are also changed to follow the pattern established with record data. (#193)
• Renamed UnknownOptData::from_octets to new and return a result. (#193)
• Completely redesigns DNS cookie options, adding support for standard server cookies introduced in RFC 9018. (#193)
• Change the type of ExtendedError’s text to Str<Octs> and change the return type of set_text to (). (#193)
• Changed the type TcpKeepalive’s content to a newtype IdleTimeout to make it easier to convert to and from durations. (#193)
• Changes Padding to just contain the padding octets and drop PaddingMode. Instead, the methods on OptBuilder should be used to add padding. (#193)

New

• Display impls are now available for all EDNS0 options. (#157)
• Adds a FromStr implementation and related functions to RelativeDname. (#177)
• Add a Debug impl to base::message::Message so it can be unwrapped etc. (#199)
• New methods make_canonical on Dname and RelativeDname that convert the name into its canonical, i.e., lowercase form. Similarly, new methods ToDname::to_canonical_dname and ToRelativeDname::to_canonical_relative_dname that produce new
  canonical names. (#200)
• Added a MAX_LEN constant to various types that wrap length-limited octets sequences. (#201 by @CrabNejonas)

0.7.2

New

• Added a new method FoundSrvs::into_srvs that converts the value into an iterator over the found SRV records without resolving them further. (#174)

Bug Fixes

• Fix trait bounds on FoundSrvs::into_stream to make it usable again. (#174)

0.7.1

New

• Added a method flatten_into to record data types that converts a value with a parsed (and thus possibly compressed) domain name into a one with a normal domain name. (#151 by @xofyarg)

Other Changes

• Disable default features for chrono. (#149 by @vavrusa)

0.7.0

Breaking Changes

• The minimum supported Rust version is now 1.56.1. (#128)

• The OctetsBuilder trait does not require AsRef<[u8]> and AsMut<[u8]> any more. These have been added as explicit trait bounds where needed. In return, Cow<[u8]> can now be used as an octets builder where AsMut<[u8]> is not needed. (#130).

• The Display implementation for UncertainDname now ends an absolute name with a dot to match the behaviour of the FromStr implementation. (#116)

• The salt and hash parameters of Nsec3 and Nsec3Param have been wrapped in newtypes. (#116)

• Functions depending on the rand crate have been moved behind a new random feature as rand is not available on all systems, even with std support. The feature is, however, part of the default features.

  In particular, this means that Header::set_random_id, MessageBuilder::request_axfr, and opt::rfc7830::PaddingMode::Random are only available if the feature is enabled. (#117 by @Jezza)

• resolv::Resolver::Query now has to be Send. This will allow the resolver to be used in async functions spawned onto a Tokio runtime.

  The stub resolver’s query struct is already Send, so no actual changes are necessary. However, because this changes the definition of the Resolver trait, this is a breaking change, anyway. (#125)

New

• ``base::header::Flag` for easier working for the flags of a message header. (#109 by @tomaskrizek)
• base::name::OwnedLabel now implements Clone and Copy as well as Display and Debug. (#112)
• base::record::Record::into_owner_and_name allows decomposing a record into its two parts that aren’t Copy. (#114)
• Initial support for SVCB and HTTPS record types. (#115 by @xofyarg)
• Introduced Serde support for all relevant types. (#116)
• The OctetsBuilder trait is now also implemented for mutable references of types that are octet builders and turn into themselves when frozen (i.e., OctetsBuilder::Octets = Self). (#121)
• Support for [heapless::Vec<u8, N>] as an octets sequence via the new heapless feature. (#122 by @bugadani)
• The parameter types for SVCB record data now also implement Eq (#135)

Bug Fixes

• Correctly encode and decode the address in EDNS client subnet when the number of bits isn’t divisible by 8. (#101 and #102 by @xofyarg)
• validate:
  • Check for the correct public key size instead of infering if from the RRSIG length. (#110 by @vavrusa)
  • Canonalize the security algorithm before evaluation to avoid missing algorithm provided via the unknown integer variant. (#127 by @vavrusa)
• Support for no-std environments now actually works. (#117 by @Jezza)
• Canonalize IANA types when scanning so that, e.g., CLASS3 becomes Class::Ch instead of Class::Int(3). (#127 by @vavrusa)
• resolv: Fixed generation of the domain name to be used for reverse IPv6 lookups. (#131)

Other Changes

• Enable doc_cfg feature flag documentation for docs.rs. (#104 by Martin Fischer)