Enum MessageEndpointError 

pub enum MessageEndpointError {
    Empty,
    Absolute,
    ProtocolRelative,
    IllegalCharacter,
    QueryOrFragment,
    NotAbsolutePath,
}

Why a string is not a usable message endpoint.

Variants

Empty

The value was empty, or was only a query string.

Absolute

The value named a scheme, so it could point anywhere.

See the module docs: this is the refusal that makes the endpoint event unusable as an SSRF primitive. Reported separately from ProtocolRelative because the two have different shapes in a log and a reader wants to know which one a peer tried.

ProtocolRelative

The value began //, which is a protocol-relative URL.

Its own case and not an Absolute one because it has no scheme to give it away: //evil.example/steal resolves to https://evil.example/steal under the client’s own scheme, so a parser that only looked for :// would walk straight past it.

IllegalCharacter

The value contained a control character or a space.

A request target with a CR in it is a request-line injection: a conforming client cannot send it, and an lenient one can be made to send a second request the user never asked for.

QueryOrFragment

The value already carried a ? or a #, so a query appended to it would be part of the existing query or of a fragment.

NotAbsolutePath

The value did not begin with /.

Trait Implementations

impl Clone for MessageEndpointError

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 MessageEndpointError

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

Formats the value using the given formatter.

impl Display for MessageEndpointError

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

Formats the value using the given formatter.

impl Eq for MessageEndpointError

impl Error for MessageEndpointError

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 PartialEq for MessageEndpointError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MessageEndpointError