Enum Error 

pub enum Error {
    ErrorCode(ErrorCode),
    HttpError(Error),
    Other(Box<dyn Error + Send + Sync>),
    Response(Response),
}

Available on crate feature http only.

The error type used for HTTP operations within the WASI environment.

This enum provides a unified representation of all errors that can occur during HTTP request or response handling, whether they originate from WASI-level error codes, dynamic runtime failures, or full HTTP responses returned as error results.

See also

• http::Error: Error type originating from the http crate.
• wasip3::http::types::ErrorCode: Standard WASI HTTP error codes.
• wasip3::http::types::Response: Used when an error represents an HTTP response body.

Variants

ErrorCode(ErrorCode)

A low-level WASI HTTP error code.

Wraps wasip3::http::types::ErrorCode to represent transport-level or protocol-level failures.

HttpError(Error)

An error originating from the http crate.

Covers errors encountered during the construction, parsing, or validation of http types (e.g. invalid headers, malformed URIs, or protocol violations).

Other(Box<dyn Error + Send + Sync>)

A dynamic application or library error.

Used for any runtime error that implements std::error::Error, allowing flexibility for different error sources.

Response(Response)

An HTTP response treated as an error.

Contains a full wasip3::http::types::Response, such as a 404 Not Found or 500 Internal Server Error, when the response itself represents an application-level failure.

Implementations

impl Error

pub fn other(msg: impl Into<String>) -> Self

Creates an Error::Other from a displayable message.

This is a convenience constructor for producing errors without manually wrapping in Error::Other.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<&'static str> for Error

fn from(s: &'static str) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(err: Error) -> Error

Converts to this type from the input type.

impl From<Error> for Error

fn from(err: Error) -> Error

Converts to this type from the input type.

impl From<ErrorCode> for Error

fn from(code: ErrorCode) -> Self

Converts to this type from the input type.

impl From<Infallible> for Error

fn from(v: Infallible) -> Self

Converts to this type from the input type.

impl From<Response> for Error

fn from(resp: Response) -> Self

Converts to this type from the input type.

impl From<String> for Error

fn from(s: String) -> Self

Converts to this type from the input type.