Hi UddlmZddlZddlmZmZmZmZda iZ ee efe d<dZ GddejjZde d efd Zd e fd Zd efd Zde d efd ZdS))DictN)BackendDatagramSocketSocket StreamSocket _backendsFceZdZdS)AsyncLibraryNotFoundErrorN)__name__ __module__ __qualname__U/home/mmwave/public_html/mmwave/venv/lib/python3.11/site-packages/dns/asyncbackend.pyr r sDrr namereturnc t|}|r|S|dkrddl}|j}n6|dkrddl}|j}ntd||t|<|S)zGet the specified asynchronous backend. *name*, a ``str``, the name of the backend. Currently the "trio" and "asyncio" backends are available. Raises NotImplementedError if an unknown backend name is specified. triorNasynciozunimplemented async backend )rgetdns._trio_backend _trio_backendrdns._asyncio_backend_asyncio_backendNotImplementedError)rbackenddnss r get_backendrsmmD!!G v~~    #++--   ####&..00!"G"G"GHHHIdO Nrc trtddl} |S#|j$rt dwxYw#t$r:ddl} |YdS#t$rt dwxYwwxYw)zAttempt to determine the in-use asynchronous I/O library by using the ``sniffio`` module if it is available. Returns the name of the library, or raises AsyncLibraryNotFoundError if the library cannot be determined. rNz&sniffio cannot determine async libraryrzno async library detected) _no_sniffio ImportErrorsniffiocurrent_async_libraryr rget_running_loop RuntimeError)r"rs rsniffr&7sI    V0022 20 V V V+,TUU U V III I  $ $ & & &99 I I I+,GHH H I Is,A)AAB A,,BB cTtrtSttS)z6Get the default backend, initializing it if necessary.)_default_backendset_default_backendr&rrrget_default_backendr*Rs"  uww ' ''rc.t|atS)a,Set the default backend. It's not normally necessary to call this method, as ``get_default_backend()`` will initialize the backend appropriately in many cases. If ``sniffio`` is not installed, or in testing situations, this function allows the backend to be set explicitly. )rr()rs rr)r)Zs#4(( r)typingr dns.exceptionrdns._asyncbackendrrrrr(rstr__annotations__r exception DNSExceptionr rr&r*r)rrrr3sD " 4W """       :   cg4IsIIII6(W(((( c g      r