Enum ConnectionError 

#[non_exhaustive]
pub enum ConnectionError {
    TcpConnect {
        host: String,
        port: u16,
        source: Error,
    },
    DnsResolution {
        address: String,
        source: Error,
    },
    SocketConfig {
        operation: String,
        source: Error,
    },
    AuthenticationFailed {
        backend: String,
        response: String,
    },
    InvalidGreeting {
        backend: String,
        greeting: String,
    },
    PoolExhausted {
        backend: String,
        max_size: usize,
    },
    StaleConnection {
        backend: String,
        reason: String,
    },
    IoError(Error),
    TlsHandshake {
        backend: String,
        source: Box<dyn Error + Send + Sync>,
    },
    CertificateVerification {
        backend: String,
        reason: String,
    },
}

Errors that can occur during connection management

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.

TcpConnect

TCP connection failed

Fields

host: String

port: u16

source: Error

DnsResolution

DNS resolution failed

Fields

address: String

source: Error

SocketConfig

Socket configuration failed (buffer sizes, keepalive, etc.)

Fields

operation: String

source: Error

AuthenticationFailed

Backend authentication failed

Fields

backend: String

response: String

InvalidGreeting

Invalid or unexpected greeting from backend

Fields

backend: String

greeting: String

PoolExhausted

Connection pool exhausted

Fields

backend: String

max_size: usize

StaleConnection

Connection is stale or broken

Fields

backend: String

reason: String

IoError(Error)

I/O error during communication

TlsHandshake

TLS handshake failed

Fields

backend: String

source: Box<dyn Error + Send + Sync>

CertificateVerification

Certificate verification failed

Fields

backend: String

reason: String

Implementations

impl ConnectionError

pub fn is_client_disconnect(&self) -> bool

Check if this is a client disconnection (broken pipe)

pub const fn is_authentication_error(&self) -> bool

Check if this is an authentication error

pub const fn is_network_error(&self) -> bool

Check if this is a network connectivity error

Trait Implementations

impl Debug for ConnectionError

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

Formats the value using the given formatter.

impl Display for ConnectionError

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

Formats the value using the given formatter.

impl Error for ConnectionError

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 ConnectionError

fn from(err: Error) -> Self

Converts to this type from the input type.