Struct ErrorResponseMessage 

pub struct ErrorResponseMessage {
    pub result: Option<DeRecResult>,
}

ErrorResponseMessage is a generic error response sent when a protocol message cannot be processed successfully.

Context

This message may be returned in response to any DeRecMessage when the receiver encounters an error during processing.

Typical scenarios include:

• malformed or invalid message payloads
• unsupported or unknown message types
• protocol violations (e.g., invalid sequence, nonce mismatch)
• authorization or validation failures

Semantics

This message indicates that:

• the original request was not successfully processed
• no state change should be assumed by the sender

The sender SHOULD:

• inspect the result field to determine the cause of the failure
• decide whether to retry, abort, or escalate based on the error

Usage Guidelines

• This message is intended as a fallback when no more specific response type is applicable
• Protocol-specific errors SHOULD use their corresponding response messages when available

Security Considerations

• Error responses SHOULD avoid leaking sensitive internal details
• Only high-level error information should be exposed via result

Idempotency

Error responses are idempotent and may be returned multiple times for repeated invalid requests.

Fields

result: Option<DeRecResult>

Result describing the error encountered while processing the request.

This field encodes the error type and any associated status information.

Trait Implementations

impl Clone for ErrorResponseMessage

fn clone(&self) -> ErrorResponseMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ErrorResponseMessage

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

Formats the value using the given formatter.

impl Default for ErrorResponseMessage

fn default() -> Self

Returns the “default value” for a type.

impl Hash for ErrorResponseMessage

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for ErrorResponseMessage

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for ErrorResponseMessage

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ErrorResponseMessage

impl StructuralPartialEq for ErrorResponseMessage