Enum HandshakeError 

pub enum HandshakeError {
    NothingOffered,
    MalformedResult {
        method: &'static str,
        field: &'static str,
        detail: String,
    },
    Negotiation(NegotiationError),
    Transport(TransportError),
    Assembling {
        method: &'static str,
        source: JsonObjectError,
    },
}

Why a session could not be established.

Variants

NothingOffered

The client was built offering no revision.

Separate from an unsupported server because the two need different fixes: one is a misconfigured client, the other is a peer this build cannot speak to.

MalformedResult

The peer’s answer is missing a field the schema marks required, or the field holds the wrong shape.

Named by field so the reader knows which part of the peer to look at. “Malformed initialize result” sends them looking at the whole message.

Fields

method: &'static str

Which handshake this was.

field: &'static str

Which required field is wrong.

detail: String

What was there instead.

Negotiation(NegotiationError)

This build cannot speak any revision the peer offers.

Transport(TransportError)

The request or the notification could not be delivered.

Assembling

A params object this client assembled was not valid JSON.

Fields

method: &'static str

Which handshake this was.

source: JsonObjectError

The underlying parse failure.

Trait Implementations

impl Clone for HandshakeError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HandshakeError

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

Formats the value using the given formatter.

impl Display for HandshakeError

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

Formats the value using the given formatter.

impl Eq for HandshakeError

impl Error for HandshakeError

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<HandshakeError> for ConnectError

fn from(source: HandshakeError) -> Self

Converts to this type from the input type.

impl From<HandshakeError> for ConnectError

fn from(source: HandshakeError) -> Self

Converts to this type from the input type.

impl From<HandshakeError> for StdioConnectError

fn from(source: HandshakeError) -> Self

Converts to this type from the input type.

impl From<NegotiationError> for HandshakeError

fn from(source: NegotiationError) -> Self

Converts to this type from the input type.

impl From<TransportError> for HandshakeError

fn from(source: TransportError) -> Self

Converts to this type from the input type.

impl PartialEq for HandshakeError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HandshakeError