autobahn.wamp.exception

---

Module Contents

exception autobahn.wamp.exception.Error

Bases: RuntimeError

Base class for all exceptions related to WAMP.

exception autobahn.wamp.exception.SessionNotReady

Bases: Error

The application tried to perform a WAMP interaction, but the session is not yet fully established.

exception autobahn.wamp.exception.SerializationError

Bases: Error

Exception raised when the WAMP serializer could not serialize the application payload (args or kwargs for CALL, PUBLISH, etc).

exception autobahn.wamp.exception.InvalidUriError

Bases: Error

Exception raised when an invalid WAMP URI was used.

exception autobahn.wamp.exception.ProtocolError

Bases: Error

Exception raised when WAMP protocol was violated. Protocol errors are fatal and are handled by the WAMP implementation. They are not supposed to be handled at the application level.

exception autobahn.wamp.exception.TransportLost

Bases: Error

Exception raised when the transport underlying the WAMP session was lost or is not connected.

exception autobahn.wamp.exception.ApplicationError(error, *args, **kwargs)

Bases: Error

Base class for all exceptions that can/may be handled at the application level.

INVALID_URI = 'wamp.error.invalid_uri'

Peer provided an incorrect URI for a URI-based attribute of a WAMP message such as a realm, topic or procedure.

INVALID_PAYLOAD = 'wamp.error.invalid_payload'

The application payload could not be serialized.

PAYLOAD_SIZE_EXCEEDED = 'wamp.error.payload_size_exceeded'

The application payload could not be transported becuase the serialized/framed payload exceeds the transport limits.

NO_SUCH_PROCEDURE = 'wamp.error.no_such_procedure'

A Dealer could not perform a call, since not procedure is currently registered under the given URI.

PROCEDURE_ALREADY_EXISTS = 'wamp.error.procedure_already_exists'

A procedure could not be registered, since a procedure with the given URI is already registered.

PROCEDURE_EXISTS_INVOCATION_POLICY_CONFLICT = 'wamp.error.procedure_exists_with_different_invocation_policy'

A procedure could not be registered, since a procedure with the given URI is already registered, and the registration has a conflicting invocation policy.

NO_SUCH_REGISTRATION = 'wamp.error.no_such_registration'

A Dealer could not perform a unregister, since the given registration is not active.

NO_SUCH_SUBSCRIPTION = 'wamp.error.no_such_subscription'

A Broker could not perform a unsubscribe, since the given subscription is not active.

NO_SUCH_SESSION = 'wamp.error.no_such_session'

A router could not perform an operation, since a session ID specified was non-existant.

INVALID_ARGUMENT = 'wamp.error.invalid_argument'

A call failed, since the given argument types or values are not acceptable to the called procedure - in which case the Callee may throw this error. Or a Router performing payload validation checked the payload (args / kwargs) of a call, call result, call error or publish, and the payload did not conform.

SYSTEM_SHUTDOWN = 'wamp.error.system_shutdown'

The Peer is shutting down completely - used as a GOODBYE (or ABORT) reason.

CLOSE_REALM = 'wamp.error.close_realm'

The Peer want to leave the realm - used as a GOODBYE reason.

GOODBYE_AND_OUT = 'wamp.error.goodbye_and_out'

A Peer acknowledges ending of a session - used as a GOOBYE reply reason.

NOT_AUTHORIZED = 'wamp.error.not_authorized'

A call, register, publish or subscribe failed, since the session is not authorized to perform the operation.

AUTHORIZATION_FAILED = 'wamp.error.authorization_failed'

A Dealer or Broker could not determine if the Peer is authorized to perform a join, call, register, publish or subscribe, since the authorization operation itself failed. E.g. a custom authorizer did run into an error.

AUTHENTICATION_FAILED = 'wamp.error.authentication_failed'

Something failed with the authentication itself, that is, authentication could not run to end.

NO_AUTH_METHOD = 'wamp.error.no_auth_method'

No authentication method the peer offered is available or active.

NO_SUCH_REALM = 'wamp.error.no_such_realm'

Peer wanted to join a non-existing realm (and the Router did not allow to auto-create the realm).

NO_SUCH_ROLE = 'wamp.error.no_such_role'

A Peer was to be authenticated under a Role that does not (or no longer) exists on the Router. For example, the Peer was successfully authenticated, but the Role configured does not exists - hence there is some misconfiguration in the Router.

NO_SUCH_PRINCIPAL = 'wamp.error.no_such_principal'

A Peer was authenticated for an authid that does not or longer exists.

CANCELED = 'wamp.error.canceled'

A Dealer or Callee canceled a call previously issued (WAMP AP).

TIMEOUT = 'wamp.error.timeout'

A pending (in-flight) call was timed out.

NO_ELIGIBLE_CALLEE = 'wamp.error.no_eligible_callee'

A Dealer could not perform a call, since a procedure with the given URI is registered, but Callee Black- and Whitelisting and/or Caller Exclusion lead to the exclusion of (any) Callee providing the procedure (WAMP AP).

ENC_NO_PAYLOAD_CODEC = 'wamp.error.no_payload_codec'

WAMP message in payload transparency mode received, but no codec set or codec did not decode the payload.

ENC_TRUSTED_URI_MISMATCH = 'wamp.error.encryption.trusted_uri_mismatch'

WAMP-cryptobox application payload end-to-end encryption error.

ENC_DECRYPT_ERROR = 'wamp.error.encryption.decrypt_error'

WAMP-cryptobox application payload end-to-end encryption error.

TYPE_CHECK_ERROR = 'wamp.error.type_check_error'

WAMP procedure called with wrong argument types or subscription published with wrong argument types.

error_message()

Get the error message of this exception.

Returns:

The error message.

Return type:

str

__unicode__()

__str__()

Return str(self).

exception autobahn.wamp.exception.NotAuthorized

Bases: Exception

Not authorized to perform the respective action.

exception autobahn.wamp.exception.InvalidUri

Bases: Exception

The URI for a topic, procedure or error is not a valid WAMP URI.

exception autobahn.wamp.exception.InvalidPayload

Bases: Exception

The URI for a topic, procedure or error is not a valid WAMP URI.

exception autobahn.wamp.exception.TypeCheckError(*args, **kwargs)

Bases: ApplicationError

The URI for a topic published with invalid argument types or a procedure called with invalid arguments types.