Struct SupportedVersions 

pub struct SupportedVersions { /* private fields */ }

The set of protocol versions a server built against this crate accepts.

ADR-137’s compatibility policy requires a server to support the current version and at least the immediately prior version. This crate is currently at version 1, so there is no prior version yet; the lower bound saturates at 1 rather than underflowing to 0 (there is no version 0).

Implementations

impl SupportedVersions

pub const fn current() -> Self

The default policy: the current version and the immediately prior one.

pub const fn new( min: ProtocolVersion, max: ProtocolVersion, ) -> Result<Self, SupportedVersionsError>

Construct an explicit [min, max] inclusive supported range within the protocol grammar implemented by this crate.

Fails with SupportedVersionsError rather than panicking on an unusable range:

• SupportedVersionsError::MinVersionZero if min is version 0 — version 0 does not exist in this protocol, and a range admitting it would accept handshakes no conforming client would send.
• SupportedVersionsError::InvertedRange if min > max — an inverted range would silently reject every handshake (no version satisfies it), which is always a configuration bug.
• SupportedVersionsError::MaxAboveCurrent if max exceeds CURRENT_VERSION — this crate cannot admit a version whose wire grammar it does not implement.

pub const fn min(self) -> ProtocolVersion

pub const fn max(self) -> ProtocolVersion

pub const fn contains(self, version: ProtocolVersion) -> bool

Trait Implementations

impl Clone for SupportedVersions

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SupportedVersions

impl Debug for SupportedVersions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SupportedVersions

fn default() -> Self

Returns the “default value” for a type.

impl Eq for SupportedVersions

impl PartialEq for SupportedVersions

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SupportedVersions