Enum smoltcp::Error

#[non_exhaustive]
pub enum Error {
    Exhausted,
    Illegal,
    Unaddressable,
    Finished,
    Truncated,
    Checksum,
    Unrecognized,
    Fragmented,
    Malformed,
    Dropped,
    NotSupported,
}

The error type for the networking stack.

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.

Exhausted

An operation cannot proceed because a buffer is empty or full.

Illegal

An operation is not permitted in the current state.

Unaddressable

An endpoint or address of a remote host could not be translated to a lower level address. E.g. there was no an Ethernet address corresponding to an IPv4 address in the ARP cache, or a TCP connection attempt was made to an unspecified endpoint.

Finished

The operation is finished. E.g. when reading from a TCP socket, there’s no more data to read because the remote has closed the connection.

Truncated

An incoming packet could not be parsed because some of its fields were out of bounds of the received data.

Checksum

An incoming packet had an incorrect checksum and was dropped.

Unrecognized

An incoming packet could not be recognized and was dropped. E.g. an Ethernet packet with an unknown EtherType.

Fragmented

An incoming IP packet has been split into several IP fragments and was dropped, since IP reassembly is not supported.

Malformed

An incoming packet was recognized but was self-contradictory. E.g. a TCP packet with both SYN and FIN flags set.

Dropped

An incoming packet was recognized but contradicted internal state. E.g. a TCP packet addressed to a socket that doesn’t exist.

NotSupported

An incoming packet was recognized but some parts are not supported by smoltcp. E.g. some bit configuration in a packet header is not supported, but is defined in an RFC.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a copy of the value.

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

Performs copy-assignment from source.

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)>

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

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

impl PartialEq<Error> for Error

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for Error

impl Eq for Error

impl StructuralEq for Error

impl StructuralPartialEq for Error