Enum NegotiateError 

pub enum NegotiateError {
    NoCommonVersion,
    UnsupportedRequiredCapability(u64),
    IncomparableGuarantee {
        dimension: &'static str,
    },
    GuaranteeNotOffered {
        peers_requirement: bool,
    },
}

Why negotiation failed.

Variants

NoCommonVersion

The version sets do not intersect.

UnsupportedRequiredCapability(u64)

The peer requires a capability this implementation does not support.

IncomparableGuarantee

An unordered dimension was declared differently by the two sides, so there is no weaker of the two to take.

Fields

dimension: &'static str

Dimension that disagreed.

GuaranteeNotOffered

The effective set does not reach what one side requires. There is no downgrade path: the handshake fails instead (decisions/0006 §4.4).

Fields

peers_requirement: bool

true when it was the peer’s requirement that went unmet.

Trait Implementations

impl Clone for NegotiateError

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 NegotiateError

impl Debug for NegotiateError

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

Formats the value using the given formatter.

impl Display for NegotiateError

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

Formats the value using the given formatter.

impl Eq for NegotiateError

impl Error for NegotiateError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<NegotiateError> for Error

fn from(e: NegotiateError) -> Error

Converts to this type from the input type.

impl PartialEq for NegotiateError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NegotiateError