Enum HttpConnectorError 

#[non_exhaustive]
pub enum HttpConnectorError {
    Request(String),
    Status {
        status: u16,
    },
    Auth(String),
    InvalidHeader(String),
    Backend(String),
}

Errors an HttpConnector implementation may surface.

The enum is #[non_exhaustive] so later plans can add failure modes additively without a semver break (mirrors crate::sql::ConnectorError).

Security

The inner String of every variant reaches MCP clients via Display. Implementors MUST NOT include the request URL, an Authorization header value, a bearer token, or an app_key in any inner String — those are credentials or capability-bearing locators. Construct error messages from non-secret context only (status code, a static reason). This mirrors the ConnectorError::Connection discipline in sql/mod.rs (T-90-01-01).

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Request(String)

The outgoing request failed at the transport layer (connect / timeout / body read). The reqwest error is deliberately NOT forwarded verbatim — its Display can echo the URL — so this carries a redacted reason only.

Status

The backend returned a non-2xx HTTP status.

Fields

status: u16

The HTTP status code (e.g. 401, 503).

Auth(String)

Authentication could not be applied to the outgoing request (e.g. a required passthrough token was absent). The reason MUST NOT echo the token or header value.

InvalidHeader(String)

A header name or value could not be constructed from the configured / supplied value. The reason MUST NOT echo a credential header’s value.

Backend(String)

A backend / configuration problem not covered by the variants above (e.g. an unparseable base URL, an unknown HTTP method).

Trait Implementations

impl Debug for HttpConnectorError

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

Formats the value using the given formatter.

impl Display for HttpConnectorError

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

Formats the value using the given formatter.

impl Error for HttpConnectorError

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.