Enum Error

pub enum Error {
    Error(u8),
    Unimplemented,
}

An error as returned by a Handler method.

Variants

Error(u8)

A plain error. The meaning of the value is not defined by the protocol. Different values can therefore be used by a handler for debugging purposes.

Unimplemented

The request is not implemented. Note that, in some cases, the protocol implementation tells the client that a feature is implemented; if the handler method then returns Unimplemented, the client will be confused. So, normally it is best either to not implement a Handler method, or to return Error from implementations.