a Þˆ¨a"ã@sTdZddlmZmZddlmZddlmZdd„Z d dd „Z dd d „Z gd ¢Z dS)zzmq device functionsé)ÚlibÚffi)ÚSocket)Ú_retry_sys_callcCs t||ƒS©N)Úproxy)Z device_typeÚfrontendÚbackend©r ú7lib/python3.9/site-packages/zmq/backend/cffi/devices.pyÚdevice sr NcCs0t|tƒr|j}ntj}ttj|j|j|ƒdSr)Ú isinstancerÚ _zmq_socketrÚNULLrÚCZ zmq_proxy)rr Úcapturer r r rs rcCsJt|tƒr|j}ntj}t|tƒr*|j}ntj}ttj|j|j||ƒdS)aúproxy_steerable(frontend, backend, capture, control) Start a zeromq proxy with control flow. .. versionadded:: libzmq-4.1 .. versionadded:: 18.0 Parameters ---------- frontend : Socket The Socket instance for the incoming traffic. backend : Socket The Socket instance for the outbound traffic. capture : Socket (optional) The Socket instance for capturing traffic. control : Socket (optional) The Socket instance for control flow. N)r rrrrrrZzmq_proxy_steerable)rr rZcontrolr r r Úproxy_steerables  ûr)r rr)N)NN) Ú__doc__Z_cffirrrZsocketrZutilsrr rrÚ__all__r r r r Ús   &