Enum SparseWireError 

pub enum SparseWireError {
    Truncated,
    BadMagic,
    UnsupportedVersion(u8),
    LengthOutOfBounds,
    TooManyLeaves,
    TooLarge,
    InvalidEntryMode(u8),
    InvalidEntryName,
}

Errors raised when encoding or decoding a SparseResponse on the wire. Kept tight — the transport layer wraps these in its own transport-error type at the call site.

Variants

Truncated

Buffer was shorter than the fixed-size manifest header (or truncated partway through a length-prefixed section). The decoder refuses to allocate from a truncated header.

BadMagic

First 4 bytes are not b"MSP1". Either the body is for a different endpoint or the server is on a fork.

UnsupportedVersion(u8)

Version byte is something other than SPARSE_WIRE_VERSION. A future server speaking v2 must not be silently downgraded.

LengthOutOfBounds

One of the length-prefixed sections claims more bytes than remain in the input. Likely a malicious server trying to make us allocate.

TooManyLeaves

leaf_count exceeds MAX_LEAVES. The verifier MUST refuse before allocating anything proportional to the claimed count.

TooLarge

Encoded buffer would exceed SPARSE_WIRE_MAX_BYTES.

InvalidEntryMode(u8)

A tree entry’s mode byte is not a valid EntryMode.

InvalidEntryName

Entry name length declared as zero or > 255 bytes — outside the SPEC-OBJECTS §4 range. Matches the per-tree-entry name cap.

Trait Implementations

impl Clone for SparseWireError

fn clone(&self) -> SparseWireError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparseWireError

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

Formats the value using the given formatter.

impl Display for SparseWireError

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

Formats the value using the given formatter.

impl Eq for SparseWireError

impl Error for SparseWireError

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 SparseWireError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SparseWireError