Enum HandshakeError 

pub enum HandshakeError {
    UnexpectedMessage(Box<Message>),
    RemoteNonceReuse,
    LocalDuplicateNonce,
    ConnectionClosed,
    Io(Error),
    Serialization(SerializationError),
    ObsoleteVersion(Version),
    Timeout,
    ZakuraUpgradeSelected,
    ZakuraUpgrade(ZakuraUpgradeError),
    ZakuraUpgradePreludeMalformed(ZakuraProtocolError),
}

An error during a handshake with a remote peer.

Variants

UnexpectedMessage(Box<Message>)

The remote peer sent an unexpected message during the handshake.

RemoteNonceReuse

The peer connector detected handshake nonce reuse, possibly indicating self-connection.

LocalDuplicateNonce

The peer connector created a duplicate random nonce. This is very unlikely, because the range of the data type is 2^64.

ConnectionClosed

The remote peer closed the connection.

Io(Error)

An error occurred while performing an IO operation.

Serialization(SerializationError)

A serialization error occurred while reading or writing a message.

ObsoleteVersion(Version)

The remote peer offered a version older than our minimum version.

Timeout

Sending or receiving a message timed out.

ZakuraUpgradeSelected

A mutually P2P-v2-capable peer was routed to the Zakura upgrade path.

ZakuraUpgrade(ZakuraUpgradeError)

The Zakura upgrade hook returned an error.

ZakuraUpgradePreludeMalformed(ZakuraProtocolError)

A mutually P2P-v2-capable peer framed a Zakura upgrade prelude whose payload failed to decode.

The peer advertised NODE_P2P_V2 and sent a p2pv2up message, but its bytes were malformed (oversized, trailing, truncated, or a bad discriminator). This is a protocol violation, so we disconnect the peer on the first offense (SR-7 fail-closed) instead of silently falling back to legacy, which a peer could otherwise use to force a downgrade. Unlike the neutral upgrade outcomes, this is a real peer failure.

Implementations

impl HandshakeError

pub fn is_neutral_disconnect(&self) -> bool

Returns true if this error is an intentional neutral disconnect rather than peer failure.

Trait Implementations

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 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<Elapsed> for HandshakeError

fn from(_source: Elapsed) -> Self

Converts to this type from the input type.

impl From<Error> for HandshakeError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<SerializationError> for HandshakeError

fn from(source: SerializationError) -> Self

Converts to this type from the input type.

impl From<ZakuraUpgradeError> for HandshakeError

fn from(source: ZakuraUpgradeError) -> Self

Converts to this type from the input type.