Enum BackendError 

pub enum BackendError {
    Io(Error),
    Closed,
    Protocol(String),
    BackendError(String),
    Auth(String),
    Tls(String),
    UnsupportedType(u32),
    ParseValue {
        column: String,
        reason: String,
    },
}

Errors produced while acting as a PostgreSQL client.

Variants

Io(Error)

I/O on the underlying TCP or TLS stream failed.

Closed

The backend closed the connection before the expected reply arrived (e.g. TCP RST, idle timeout, server shutdown).

Protocol(String)

A protocol-level violation: unexpected message type, malformed payload, or truncated frame.

BackendError(String)

The backend returned an ErrorResponse (tag E). The string is the M (Message) field, which is always present.

Auth(String)

Authentication did not complete successfully — wrong password, unsupported SASL mechanism, or SCRAM server verifier mismatch.

Tls(String)

TLS handshake failed. String carries the rustls diagnostic.

UnsupportedType(u32)

Unsupported type OID in a result column — the proxy only knows how to decode a fixed set of common OIDs.

ParseValue

Value parsing (text-format) failed — e.g. malformed int, bad boolean string, invalid timestamp.

Fields

column: String

reason: String

Trait Implementations

impl Debug for BackendError

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

Formats the value using the given formatter.

impl Display for BackendError

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

Formats the value using the given formatter.

impl Error for BackendError

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 From<Error> for BackendError

fn from(source: Error) -> Self

Converts to this type from the input type.