jackc/pgx · error

authType not recognized: %d

Error message

authType not recognized: %d

What it means

Error "authType not recognized: %d" thrown in jackc/pgx.

Source

Thrown at pgproto3/backend.go:285

//			the context.
//
// Since the Frontend does not know about the state of a backend, it is important
// to call SetAuthType() after an authentication request is received by the Frontend.
func (b *Backend) SetAuthType(authType uint32) error {
	switch authType {
	case AuthTypeOk,
		AuthTypeCleartextPassword,
		AuthTypeMD5Password,
		AuthTypeSCMCreds,
		AuthTypeGSS,
		AuthTypeGSSCont,
		AuthTypeSSPI,
		AuthTypeSASL,
		AuthTypeSASLContinue,
		AuthTypeSASLFinal:
		b.authType = authType
	default:
		return fmt.Errorf("authType not recognized: %d", authType)
	}

	return nil
}

// SetMaxBodyLen sets the maximum length of a message body in octets.
// If a message body exceeds this length, Receive will return an error.
// This is useful for protecting against malicious clients that send
// large messages with the intent of causing memory exhaustion.
// The default value is 0.
// If maxBodyLen is 0, then no maximum is enforced.
func (b *Backend) SetMaxBodyLen(maxBodyLen int) {
	b.maxBodyLen = maxBodyLen
}

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at pgproto3/backend.go:285 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of jackc/pgx@ec1a0befd2 (2026-08-04). Data as JSON: /data/errors/b10c87a10d78ac8f.json. Report an issue: GitHub.