U ßM‘fÇ ã@sxddlmZddlmZmZmZmZddlmZddlm Z m Z dddgZ Gd d„dƒZ Gd d„dƒZ Gd d„dƒZd S) é)Ú annotations)ÚListÚOptionalÚSequenceÚTupleé)Úframes)Ú ExtensionNameÚExtensionParameterÚ ExtensionÚClientExtensionFactoryÚServerExtensionFactoryc@sBeZdZUdZded<ddœddddœd d „Zddd œd d „ZdS)r z% Base class for extensions. r ÚnameN)Úmax_sizez frames.Framez Optional[int])ÚframerÚreturncCst‚dS)a) Decode an incoming frame. Args: frame (Frame): incoming frame. max_size: maximum payload size in bytes. Returns: Frame: Decoded frame. Raises: PayloadTooBig: if decoding the payload exceeds ``max_size``. N©ÚNotImplementedError)Úselfrr©rú>/tmp/pip-unpacked-wheel-yzabpfcc/websockets/extensions/base.pyÚdecodeszExtension.decode)rrcCst‚dS)zš Encode an outgoing frame. Args: frame (Frame): outgoing frame. Returns: Frame: Encoded frame. Nr)rrrrrÚencode+s zExtension.encode)Ú__name__Ú __module__Ú __qualname__Ú__doc__Ú__annotations__rrrrrrr s üc@s:eZdZUdZded<ddœdd„Zdd d d œd d „ZdS)r z: Base class for client-side extension factories. r rzList[ExtensionParameter])rcCst‚dS)z§ Build parameters to send to the server for this extension. Returns: List[ExtensionParameter]: Parameters to send to the server. Nr)rrrrÚget_request_paramsBsz)ClientExtensionFactory.get_request_paramsúSequence[ExtensionParameter]úSequence[Extension]r ©ÚparamsÚaccepted_extensionsrcCst‚dS)aÈ Process parameters received from the server. Args: params (Sequence[ExtensionParameter]): parameters received from the server for this extension. accepted_extensions (Sequence[Extension]): list of previously accepted extensions. Returns: Extension: An extension instance. Raises: NegotiationError: if parameters aren't acceptable. Nr©rr"r#rrrÚprocess_response_paramsLsz.ClientExtensionFactory.process_response_paramsN)rrrrrrr%rrrrr 9s  c@s,eZdZUdZded<ddddœdd „Zd S) r z: Base class for server-side extension factories. r rrr z*Tuple[List[ExtensionParameter], Extension]r!cCst‚dS)aŒ Process parameters received from the client. Args: params (Sequence[ExtensionParameter]): parameters received from the client for this extension. accepted_extensions (Sequence[Extension]): list of previously accepted extensions. Returns: Tuple[List[ExtensionParameter], Extension]: To accept the offer, parameters to send to the client for this extension and an extension instance. Raises: NegotiationError: to reject the offer, if parameters received from the client aren't acceptable. Nrr$rrrÚprocess_request_paramsmsz-ServerExtensionFactory.process_request_paramsN)rrrrrr&rrrrr ds N)Ú __future__rÚtypingrrrrÚrr r Ú__all__r r r rrrrÚs   -+