Enum DecodeSkippableFrameError 

#[non_exhaustive]
pub enum DecodeSkippableFrameError {
    Magic(Error),
    BadMagicNumber(u32),
    Length(Error),
    Payload(Error),
    AllocationFailed {
        requested: usize,
    },
    PayloadTooLarge {
        length: u32,
    },
}

Available on crate feature lsm only.

Errors surfaced when reading a SkippableFrame from a stream.

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.

Magic(Error)

I/O error while reading the 4-byte magic prefix.

BadMagicNumber(u32)

First 4 bytes are not a skippable-frame magic in the 0x184D2A50..=0x184D2A5F range.

Length(Error)

I/O error while reading the 4-byte length field.

Payload(Error)

I/O error while reading the payload bytes.

AllocationFailed

Allocation of the payload buffer failed (e.g. a crafted length field requested more memory than is available). requested is the byte count the on-wire length field asked for.

Fields

requested: usize

PayloadTooLarge

Wire-format length field is not representable on this target’s usize width: either usize::try_from(length) fails outright (16-bit targets where the declared length exceeds u16::MAX) or length + SKIPPABLE_HEADER_SIZE would overflow usize (32-bit targets where the declared length sits near u32::MAX). On 64-bit every u32 length is representable and this variant is unreachable.

length is the raw wire-format u32 value from the length field — preserved exactly so callers can diagnose what the stream declared, without any narrowing cast.

Fields

length: u32

Trait Implementations

impl Debug for DecodeSkippableFrameError

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

Formats the value using the given formatter.

impl Display for DecodeSkippableFrameError

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

Formats the value using the given formatter.

impl Error for DecodeSkippableFrameError

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.