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base_events.cpython-39.opt-1.pyc
a DOg! @ s d Z ddlZddlZddlZddlZddlZddlZddlZddl Z ddl Z ddl Z ddl Z ddl Z ddlZddlZddlZddlZz ddlZW n ey dZY n0 ddlmZ ddlmZ ddlmZ ddlmZ ddlmZ dd lmZ dd lmZ dd lm Z dd lm Z dd lm Z ddlm Z ddl m!Z! dZ"dZ#dZ$e%e dZ&dZ'e( Z)dd Z*dd Z+dd Z,d-dd Z-d.d d Z.d d Z/e%e d!rd"d# Z0nd$d# Z0d%d& Z1G d'd( d(ej2Z3G d)d* d*ej4Z5G d+d, d,ej6Z7dS )/a Base implementation of event loop. The event loop can be broken up into a multiplexer (the part responsible for notifying us of I/O events) and the event loop proper, which wraps a multiplexer with functionality for scheduling callbacks, immediately or at a given time in the future. Whenever a public API takes a callback, subsequent positional arguments will be passed to the callback if/when it is called. This avoids the proliferation of trivial lambdas implementing closures. Keyword arguments for the callback are not supported; this is a conscious design decision, leaving the door open for keyword arguments to modify the meaning of the API call itself. N ) constants) coroutines)events) exceptions)futures) protocols)sslproto) staggered)tasks) transports)trsock)logger) BaseEventLoopServerd g ?AF_INET6iQ c C s0 | j }tt|dd tjr$t|jS t| S d S )N__self__) _callback isinstancegetattrr Taskreprr str)handlecb r +/usr/lib64/python3.9/asyncio/base_events.py_format_handleJ s r c C s( | t jkrdS | t jkr dS t| S d S )Nz<pipe>z<stdout>) subprocessPIPESTDOUTr )fdr r r _format_pipeS s r# c C sJ t tdstdn2z| tjtjd W n tyD tdY n0 d S )N SO_REUSEPORTz)reuse_port not supported by socket moduler zTreuse_port not supported by socket module, SO_REUSEPORT defined but not implemented.)hasattrsocket ValueError setsockopt SOL_SOCKETr$ OSErrorsockr r r _set_reuseport\ s r- c C s t tdsd S |dtjtjhvs(| d u r,d S |tjkr>tj}n|tjkrPtj}nd S |d u rbd}nVt|trz|dkrzd}n>t|tr|dkrd}n&z t |}W n t t fy Y d S 0 |tj krtj g}tr|tj n|g}t| tr| d} d| v rd S |D ]r}zVt|| trH|tjkrH|||d| |||ffW S |||d| |ffW S W n tyv Y n0 qd S )N inet_ptonr Zidna%)r% r& IPPROTO_TCP IPPROTO_UDP SOCK_STREAM SOCK_DGRAMr bytesr int TypeErrorr' AF_UNSPECAF_INET _HAS_IPv6appendr decoder. r* ) hostportfamilytypeprotoZflowinfoZscopeidZafsafr r r _ipaddr_infog sN rD c C s t }| D ]*}|d }||vr(g ||< || | q t| }g }|dkr|||d d|d |d d|d = |dd tjtj | D |S )z-Interleave list of addrinfo tuples by family.r r Nc s s | ]}|d ur|V qd S Nr ).0ar r r <genexpr> s z(_interleave_addrinfos.<locals>.<genexpr>) collections OrderedDictr< listvaluesextend itertoolschain from_iterable zip_longest)Z addrinfosZfirst_address_family_countZaddrinfos_by_familyaddrr@ Zaddrinfos_listsZ reorderedr r r _interleave_addrinfos s" rS c C s4 | s"| }t|ttfr"d S t| d S rE ) cancelled exceptionr SystemExitKeyboardInterruptr Z _get_loopstop)futexcr r r _run_until_complete_cb s r[ TCP_NODELAYc C s@ | j tjtjhv r<| jtjkr<| jtjkr<| tjtj d d S Nr ) r@ r& r: r rA r4 rB r2 r( r\ r+ r r r _set_nodelay s r^ c C s d S rE r r+ r r r r^ s c C s t d ur t| t jr tdd S )Nz"Socket cannot be of type SSLSocket)sslr Z SSLSocketr8 r+ r r r _check_ssl_socket s r` c @ sT e Zd Zdd Zdd Zdd Zdd Zd d Zd d Zd d Z dd Z dd Z dS )_SendfileFallbackProtocolc C sh t |tjstd|| _| | _| | _|j | _ | | | | j r^| jj | _nd | _d S )Nz.transport should be _FlowControlMixin instance)r r Z_FlowControlMixinr8 _transportZ get_protocol_protoZ is_reading_should_resume_readingZ_protocol_paused_should_resume_writing pause_reading set_protocol_loop create_future_write_ready_fut)selftranspr r r __init__ s z"_SendfileFallbackProtocol.__init__c s2 | j rtd| j}|d u r$d S |I d H d S )NzConnection closed by peer)rb is_closingConnectionErrorrj )rk rY r r r drain s z _SendfileFallbackProtocol.drainc C s t dd S )Nz?Invalid state: connection should have been established already. RuntimeError)rk transportr r r connection_made s z)_SendfileFallbackProtocol.connection_madec C s@ | j d ur0|d u r$| j td n | j | | j| d S )Nz Connection is closed by peer)rj set_exceptionro rc connection_lost)rk rZ r r r rv s z)_SendfileFallbackProtocol.connection_lostc C s | j d urd S | jj | _ d S rE )rj rb rh ri rk r r r pause_writing s z'_SendfileFallbackProtocol.pause_writingc C s$ | j d u rd S | j d d | _ d S )NF)rj set_resultrw r r r resume_writing s z(_SendfileFallbackProtocol.resume_writingc C s t dd S Nz'Invalid state: reading should be pausedrq )rk datar r r data_received s z'_SendfileFallbackProtocol.data_receivedc C s t dd S r{ rq rw r r r eof_received s z&_SendfileFallbackProtocol.eof_receivedc sF | j | j | jr | j | jd ur2| j | jrB| j d S rE ) rb rg rc rd resume_readingrj cancelre rz rw r r r restore s z!_SendfileFallbackProtocol.restoreN) __name__ __module__ __qualname__rm rp rt rv rx rz r} r~ r r r r r ra s ra c @ sx e Zd Zdd Zdd Zdd Zdd Zd d Zd d Zd d Z dd Z e dd Z dd Z dd Zdd Zdd ZdS ) r c C s@ || _ || _d| _g | _|| _|| _|| _|| _d| _d | _ d S )Nr F) rh _sockets _active_count_waiters_protocol_factory_backlog _ssl_context_ssl_handshake_timeout_serving_serving_forever_fut)rk loopsocketsprotocol_factoryZ ssl_contextbacklogssl_handshake_timeoutr r r rm s zServer.__init__c C s d| j j d| jdS )N<z sockets=>) __class__r r rw r r r __repr__% s zServer.__repr__c C s | j d7 _ d S r] )r rw r r r _attach( s zServer._attachc C s. | j d8 _ | j dkr*| jd u r*| d S )Nr r )r r _wakeuprw r r r _detach, s zServer._detachc C s, | j }d | _ |D ]}| s|| qd S rE )r donery )rk waiterswaiterr r r r 2 s zServer._wakeupc C sJ | j r d S d| _ | jD ].}|| j | j| j|| j| | j| j qd S )NT) r r listenr rh _start_servingr r r )rk r, r r r r 9 s zServer._start_servingc C s | j S rE )rh rw r r r get_loopC s zServer.get_loopc C s | j S rE )r rw r r r is_servingF s zServer.is_servingc C s" | j d u rdS tdd | j D S )Nr c s s | ]}t |V qd S rE )r ZTransportSocket)rF sr r r rH M r/ z!Server.sockets.<locals>.<genexpr>)r tuplerw r r r r I s zServer.socketsc C sn | j }|d u rd S d | _ |D ]}| j| q d| _| jd urX| j sX| j d | _| jdkrj| d S )NFr ) r rh Z _stop_servingr r r r r r )rk r r, r r r closeO s z Server.closec s | tdI d H d S )Nr )r r sleeprw r r r start_servingb s zServer.start_servingc s | j d urtd| d| jd u r4td| d| | j | _ zRz| j I d H W n6 tjy z | | I d H W n 0 Y n0 W d | _ nd | _ 0 d S )Nzserver z, is already being awaited on serve_forever()z is closed) r rr r r rh ri r CancelledErrorr wait_closedrw r r r serve_foreverh s zServer.serve_foreverc s< | j d u s| jd u rd S | j }| j| |I d H d S rE )r r rh ri r< )rk r r r r r } s zServer.wait_closedN)r r r rm r r r r r r r propertyr r r r r r r r r r s r c @ sh e Zd Zdd Zdd Zdd Zddd d Zd d Zd d ZddddddZ ddddddddddZ dddZ dddZ ddd Z dd d Zd d Zd!d" Zd#d$ Zd%d& Zd'd( Zd)d* Zd+d, Zd-d. Zd/d0 Zd1d2 Zd3d4 Zd5d6 Zd7d8 Zd9d: Z d;d< Z e j fd=d>Z d?d@ Z!dAdB Z"ddCdDdEZ#ddCdFdGZ$ddCdHdIZ%dJdK Z&dLdM Z'dNdO Z(ddCdPdQZ)dRdS Z*dTdU Z+dVdW Z,dXdXdXdXdYdZd[Z-dd\d]Z.ddd^d_d`Z/dadb Z0dcdd Z1dedf Z2ddgdhZ3dddXdXdXdddddddi djdkZ4ddldmZ5ddd^dndoZ6dpdq Z7drds Z8ddddtdudvZ9ddXdXdXe:ddddwdxdyZ;dXe<j=dXdXdYdzd{Z>d|d} Z?de<j@e<jAdd~dddddd ddZBdddddZCdd ZDdd ZEdd ZFeGjHeGjHeGjHdddXdddd ddZIeGjHeGjHeGjHdddXdddd ddZJdd ZKdd ZLdd ZMdd ZNdd ZOdd ZPdd ZQdd ZRdd ZSdd ZTdd ZUdS )r c C s d| _ d| _d| _t | _g | _d | _d| _d | _ t dj | _ d | _| t d| _d | _d | _d| _d | _t | _d| _d| _d S )Nr F monotonicg?) _timer_cancelled_count_closed _stoppingrI deque_ready _scheduled_default_executorZ _internal_fds _thread_idtimeget_clock_infoZ resolution_clock_resolution_exception_handler set_debugr Z_is_debug_modeslow_callback_duration_current_handle _task_factory"_coroutine_origin_tracking_enabled&_coroutine_origin_tracking_saved_depthweakrefWeakSet _asyncgens_asyncgens_shutdown_called_executor_shutdown_calledrw r r r rm s& zBaseEventLoop.__init__c C s. d| j j d| d| d| d S )Nr z running=z closed=z debug=r )r r is_running is_closed get_debugrw r r r r s zBaseEventLoop.__repr__c C s t j| dS )z,Create a Future object attached to the loop.r )r Futurerw r r r ri s zBaseEventLoop.create_futureN)namec C sN | | jdu r2tj|| |d}|jrJ|jd= n| | |}t|| |S )zDSchedule a coroutine object. Return a task object. N)r r ) _check_closedr r r _source_tracebackZ_set_task_name)rk coror Ztaskr r r create_task s zBaseEventLoop.create_taskc C s" |durt |std|| _dS )aw Set a task factory that will be used by loop.create_task(). If factory is None the default task factory will be set. If factory is a callable, it should have a signature matching '(loop, coro)', where 'loop' will be a reference to the active event loop, 'coro' will be a coroutine object. The callable must return a Future. Nz'task factory must be a callable or None)callabler8 r )rk factoryr r r set_task_factory s z BaseEventLoop.set_task_factoryc C s | j S )z<Return a task factory, or None if the default one is in use.)r rw r r r get_task_factory s z BaseEventLoop.get_task_factory)extraserverc C s t dS )zCreate socket transport.NNotImplementedError)rk r, protocolr r r r r r _make_socket_transport s z$BaseEventLoop._make_socket_transportFT) server_sideserver_hostnamer r r call_connection_madec C s t dS )zCreate SSL transport.Nr ) rk Zrawsockr sslcontextr r r r r r r r r r _make_ssl_transport s z!BaseEventLoop._make_ssl_transportc C s t dS )zCreate datagram transport.Nr )rk r, r addressr r r r r _make_datagram_transport s z&BaseEventLoop._make_datagram_transportc C s t dS )zCreate read pipe transport.Nr rk piper r r r r r _make_read_pipe_transport s z'BaseEventLoop._make_read_pipe_transportc C s t dS )z Create write pipe transport.Nr r r r r _make_write_pipe_transport s z(BaseEventLoop._make_write_pipe_transportc s t dS )z Create subprocess transport.Nr ) rk r argsshellstdinstdoutstderrbufsizer kwargsr r r _make_subprocess_transport s z(BaseEventLoop._make_subprocess_transportc C s t dS )zWrite a byte to self-pipe, to wake up the event loop. 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Nr rw r r r _write_to_self s z BaseEventLoop._write_to_selfc C s t dS )zProcess selector events.Nr )rk event_listr r r _process_events s z BaseEventLoop._process_eventsc C s | j rtdd S )NzEvent loop is closed)r rr rw r r r r s zBaseEventLoop._check_closedc C s | j rtdd S )Nz!Executor shutdown has been called)r rr rw r r r _check_default_executor s z%BaseEventLoop._check_default_executorc C s* | j | | s&| | j| d S rE )r discardr call_soon_threadsafer acloserk agenr r r _asyncgen_finalizer_hook s z&BaseEventLoop._asyncgen_finalizer_hookc C s. | j r tjd|dt| d | j| d S )Nzasynchronous generator z3 was scheduled after loop.shutdown_asyncgens() callsource)r warningswarnResourceWarningr addr r r r _asyncgen_firstiter_hook s z&BaseEventLoop._asyncgen_firstiter_hookc s d| _ t| jsdS t| j}| j tjdd |D d| dI dH }t||D ]*\}}t|t rT| d|||d qTdS )z,Shutdown all active asynchronous generators.TNc S s g | ] }| qS r )r )rF Zagr r r <listcomp>$ r/ z4BaseEventLoop.shutdown_asyncgens.<locals>.<listcomp>)Zreturn_exceptionsr z;an error occurred during closing of asynchronous generator )messagerU Zasyncgen) r lenr rK clearr _gatherzipr Exceptioncall_exception_handler)rk Z closing_agensresultsresultr r r r shutdown_asyncgens s& z BaseEventLoop.shutdown_asyncgensc s\ d| _ | jdu rdS | }tj| j|fd}| z|I dH W | n | 0 dS )z.Schedule the shutdown of the default executor.TN)targetr )r r ri threadingThread _do_shutdownstartjoin)rk futurethreadr r r shutdown_default_executor1 s z'BaseEventLoop.shutdown_default_executorc C sX z | j jdd | |jd W n2 tyR } z| |j| W Y d }~n d }~0 0 d S )NTwait)r shutdownr ry r ru )rk r exr r r r > s zBaseEventLoop._do_shutdownc C s( | rtdt d ur$tdd S )Nz"This event loop is already runningz7Cannot run the event loop while another loop is running)r rr r Z_get_running_looprw r r r _check_runningE s z BaseEventLoop._check_runningc C s | | | | j t | _t }tj | j | j d zJt | | | jrLq^qLW d| _d| _t d | d tj | n,d| _d| _t d | d tj | 0 dS )zRun until stop() is called.) firstiter finalizerFN)r r _set_coroutine_origin_tracking_debugr get_identr sysget_asyncgen_hooksset_asyncgen_hooksr r r Z_set_running_loop _run_oncer )rk Zold_agen_hooksr r r run_foreverL s. zBaseEventLoop.run_foreverc C s | | t| }tj|| d}|r4d|_|t zFz | W n* |rp| rp| sp| Y n0 W | t n | t 0 | std| S )a\ Run until the Future is done. If the argument is a coroutine, it is wrapped in a Task. WARNING: It would be disastrous to call run_until_complete() with the same coroutine twice -- it would wrap it in two different Tasks and that can't be good. Return the Future's result, or raise its exception. r Fz+Event loop stopped before Future completed.)r r r Zisfuturer Z ensure_futureZ_log_destroy_pendingadd_done_callbackr[ r r rT rU Zremove_done_callbackrr r )rk r Znew_taskr r r run_until_completec s" z BaseEventLoop.run_until_completec C s d| _ dS )zStop running the event loop. Every callback already scheduled will still run. This simply informs run_forever to stop looping after a complete iteration. TN)r rw r r r rX s zBaseEventLoop.stopc C sp | rtd| jrdS | jr,td| d| _| j | j d| _ | j }|durld| _ |j dd dS )zClose the event loop. This clears the queues and shuts down the executor, but does not wait for the executor to finish. The event loop must not be running. z!Cannot close a running event loopNzClose %rTFr ) r rr r r r debugr r r r r r rk executorr r r r s zBaseEventLoop.closec C s | j S )z*Returns True if the event loop was closed.)r rw r r r r s zBaseEventLoop.is_closedc C s0 | s,|d| t| d | s,| d S )Nzunclosed event loop r )r r r r )rk _warnr r r __del__ s zBaseEventLoop.__del__c C s | j duS )z*Returns True if the event loop is running.N)r rw r r r r s zBaseEventLoop.is_runningc C s t S )zReturn the time according to the event loop's clock. This is a float expressed in seconds since an epoch, but the epoch, precision, accuracy and drift are unspecified and may differ per event loop. )r r rw r r r r s zBaseEventLoop.time)contextc G s4 | j | | |g|R d|i}|jr0|jd= |S )a8 Arrange for a callback to be called at a given time. Return a Handle: an opaque object with a cancel() method that can be used to cancel the call. The delay can be an int or float, expressed in seconds. It is always relative to the current time. Each callback will be called exactly once. If two callbacks are scheduled for exactly the same time, it undefined which will be called first. Any positional arguments after the callback will be passed to the callback when it is called. r% r )call_atr r )rk delaycallbackr% r timerr r r call_later s zBaseEventLoop.call_laterc G sZ | | jr"| | |d t|||| |}|jrB|jd= t| j | d|_ |S )z|Like call_later(), but uses an absolute time. Absolute time corresponds to the event loop's time() method. r& r T) r r _check_thread_check_callbackr Z TimerHandler heapqheappushr )rk whenr( r% r r) r r r r& s zBaseEventLoop.call_atc G sB | | jr"| | |d | |||}|jr>|jd= |S )aT Arrange for a callback to be called as soon as possible. This operates as a FIFO queue: callbacks are called in the order in which they are registered. Each callback will be called exactly once. Any positional arguments after the callback will be passed to the callback when it is called. call_soonr )r r r+ r, _call_soonr rk r( r% r r r r r r0 s zBaseEventLoop.call_soonc C sD t |st |r$td| dt|s@td| d|d S )Nz coroutines cannot be used with z()z"a callable object was expected by z(), got )r Z iscoroutineZiscoroutinefunctionr8 r )rk r( methodr r r r, s z BaseEventLoop._check_callbackc C s. t ||| |}|jr |jd= | j| |S )Nr )r Handler r r< )rk r( r r% r r r r r1 s zBaseEventLoop._call_soonc C s, | j du rdS t }|| j kr(tddS )ao Check that the current thread is the thread running the event loop. Non-thread-safe methods of this class make this assumption and will likely behave incorrectly when the assumption is violated. Should only be called when (self._debug == True). The caller is responsible for checking this condition for performance reasons. NzMNon-thread-safe operation invoked on an event loop other than the current one)r r r rr )rk Z thread_idr r r r+ s zBaseEventLoop._check_threadc G sB | | jr| |d | |||}|jr6|jd= | |S )z"Like call_soon(), but thread-safe.r r )r r r, r1 r r r2 r r r r s z"BaseEventLoop.call_soon_threadsafec G sh | | jr| |d |d u rL| j}| |d u rLtjjdd}|| _tj|j |g|R | dS )Nrun_in_executorZasyncio)Zthread_name_prefixr ) r r r, r r concurrentr ThreadPoolExecutorZ wrap_futuresubmit)rk r" funcr r r r r5 % s z BaseEventLoop.run_in_executorc C s& t |tjjs tdtd || _d S )Nz{Using the default executor that is not an instance of ThreadPoolExecutor is deprecated and will be prohibited in Python 3.9 )r r6 r r7 r r DeprecationWarningr r! r r r set_default_executor5 s z"BaseEventLoop.set_default_executorc C s | d|g}|r$| d| |r8| d| |rL| d| |r`| d| d|}td| | }t||||||} | | } d| d | d d d | }| | jkrt| n t| | S ) N:zfamily=ztype=zproto=zflags=, zGet address info %szGetting address info z took g @@z.3fzms: ) r< r r r r r& getaddrinfor info) rk r> r? r@ rA rB flagsmsgt0addrinfodtr r r _getaddrinfo_debug> s& z BaseEventLoop._getaddrinfo_debugr r@ rA rB rA c s2 | j r| j}ntj}| d |||||||I d H S rE )r rF r& r? r5 )rk r> r? r@ rA rB rA Z getaddr_funcr r r r? V s zBaseEventLoop.getaddrinfoc s | d tj||I d H S rE )r5 r& getnameinfo)rk ZsockaddrrA r r r rH ` s zBaseEventLoop.getnameinfo)fallbackc s | j r| dkrtdt| | |||| z| ||||I d H W S tjyv } z|sb W Y d }~n d }~0 0 | ||||I d H S )Nr z the socket must be non-blocking) r gettimeoutr' r` _check_sendfile_params_sock_sendfile_nativer SendfileNotAvailableError_sock_sendfile_fallback)rk r, fileoffsetcountrI rZ r r r sock_sendfiled s zBaseEventLoop.sock_sendfilec s t d|d|dd S )Nz-syscall sendfile is not available for socket z and file z combinationr rM rk r, rO rP rQ r r r rL s s z#BaseEventLoop._sock_sendfile_nativec s |r| | |r t|tjntj}t|}d}z|rNt|| |}|dkrNqt|d | }| d |j|I d H } | szq| ||d | I d H || 7 }q2|W |dkrt |dr| || S n&|dk rt |d r| || 0 d S )Nr seek) rU minr Z!SENDFILE_FALLBACK_READBUFFER_SIZE bytearray memoryviewr5 readintoZ sock_sendallr% ) rk r, rO rP rQ blocksizebuf total_sentviewreadr r r rN z s6 z%BaseEventLoop._sock_sendfile_fallbackc C s dt |ddvrtd|jtjks,td|d urbt|tsLtd||dkrbtd|t|tsztd||dk rtd|d S )Nbmodez$file should be opened in binary modez+only SOCK_STREAM type sockets are supportedz+count must be a positive integer (got {!r})r z0offset must be a non-negative integer (got {!r})) r r' rA r& r4 r r7 r8 formatrT r r r rK s2 z$BaseEventLoop._check_sendfile_paramsc sD g }| | |\}}}}} d} ztj|||d} | d |dur|D ]t\}}}}} z| | W qW qH ty } z8d| d| j } t| j| } | | W Y d} ~ qHd} ~ 0 0 qH| | | | I dH | W S ty } z*| | | dur | W Y d} ~ n(d} ~ 0 | dur8| Y n0 dS )z$Create, bind and connect one socket.Nr@ rA rB Fz*error while attempting to bind on address : ) r< r& setblockingbindr* strerrorlowererrnopop sock_connectr )rk r Z addr_infoZlocal_addr_infosZ my_exceptionsr@ type_rB _r r, laddrrZ rB r r r _connect_sock sB " zBaseEventLoop._connect_sock) r_ r@ rB rA r, local_addrr r happy_eyeballs_delay interleavec sz | dur|st d| du r0|r0|s,t d|} | durD|sDt d|durTt| | durh| du rhd} |dusz|dur |durt dj||f|tj||dI dH }|std| durj| |tj||dI dH stdnd| rt|| }g | du rV|D ]B}z |I dH }W qW n tyN Y qY n0 qn.tj fd d |D | d I dH \}}}|du r.d d D t dkr d nJt d t fdd D r d td ddd D n.|du rt d|jtjkr.t d|j|||| | dI dH \}}jrr|d}td||||| ||fS )a Connect to a TCP server. Create a streaming transport connection to a given Internet host and port: socket family AF_INET or socket.AF_INET6 depending on host (or family if specified), socket type SOCK_STREAM. protocol_factory must be a callable returning a protocol instance. This method is a coroutine which will try to establish the connection in the background. When successful, the coroutine returns a (transport, protocol) pair. Nz+server_hostname is only meaningful with sslz:You must set server_hostname when using ssl without a host1ssl_handshake_timeout is only meaningful with sslr 8host/port and sock can not be specified at the same timer@ rA rB rA r !getaddrinfo() returned empty listc 3 s | ]}t j |V qd S rE ) functoolspartialrn )rF rD )r laddr_infosrk r r rH ! s z2BaseEventLoop.create_connection.<locals>.<genexpr>r c S s g | ]}|D ]}|q qS r r )rF subrZ r r r r ' r/ z3BaseEventLoop.create_connection.<locals>.<listcomp>r c 3 s | ]}t | kV qd S rE r rF rZ )modelr r rH - r/ zMultiple exceptions: {}r> c s s | ]}t |V qd S rE rz r{ r r r rH 2 r/ z5host and port was not specified and no sock specified"A Stream Socket was expected, got )r r& z %r connected to %s:%r: (%r, %r))r' r` _ensure_resolvedr& r4 r* rS rn r Zstaggered_racer r allra r rA _create_connection_transportr get_extra_infor r )rk r r> r? r_ r@ rB rA r, ro r r rp rq infosrD rl rs r r )r rx r| rk r create_connection s z BaseEventLoop.create_connectionc s | d | }| }|rHt|tr*d n|} | j||| ||||d} n| |||} z|I d H W n | Y n0 | |fS )NFr r r )rd ri r boolr r r ) rk r, r r_ r r r r r r rs r r r r M s" z*BaseEventLoop._create_connection_transportc s | rtdt|dtjj}|tjju r:td||tjju rz| ||||I dH W S tj y } z|sv W Y d}~n d}~0 0 |std|| ||||I dH S )a Send a file to transport. Return the total number of bytes which were sent. The method uses high-performance os.sendfile if available. file must be a regular file object opened in binary mode. offset tells from where to start reading the file. If specified, count is the total number of bytes to transmit as opposed to sending the file until EOF is reached. File position is updated on return or also in case of error in which case file.tell() can be used to figure out the number of bytes which were sent. fallback set to True makes asyncio to manually read and send the file when the platform does not support the sendfile syscall (e.g. Windows or SSL socket on Unix). Raise SendfileNotAvailableError if the system does not support sendfile syscall and fallback is False. zTransport is closingZ_sendfile_compatiblez(sendfile is not supported for transport NzHfallback is disabled and native sendfile is not supported for transport ) rn rr r r Z _SendfileModeZ UNSUPPORTEDZ TRY_NATIVE_sendfile_nativer rM _sendfile_fallback)rk rs rO rP rQ rI r` rZ r r r sendfileg s4 zBaseEventLoop.sendfilec s t dd S )Nz!sendfile syscall is not supportedrS )rk rl rO rP rQ r r r r s z BaseEventLoop._sendfile_nativec s| |r| | |r t|dnd}t|}d}t|}z |rt|| |}|dkr|W |dkrvt|drv| || | I d H S t|d | } | d |j| I d H } | s|W |dkrt|dr| || | I d H S | I d H | | d | || 7 }q8W |dkr4t|dr4| || | I d H n4|dkrht|drh| || | I d H 0 d S )Ni @ r rU ) rU rV rW ra r% r rX r5 rY rp write) rk rl rO rP rQ rZ r[ r\ rB r] r^ r r r r s@ z BaseEventLoop._sendfile_fallbackr c s t du rtdt|t js*td|t|ddsFtd|d| }tj| ||||||dd}| | | | |j |} | |j } z|I dH W n, ty | | | Y n0 |jS ) zzUpgrade transport to TLS. Return a new transport that *protocol* should start using immediately. Nz"Python ssl module is not availablez@sslcontext is expected to be an instance of ssl.SSLContext, got Z_start_tls_compatibleFz transport z is not supported by start_tls())r r )r_ rr r Z SSLContextr8 r ri r Z SSLProtocolrf rg r0 rt r BaseExceptionr r Z_app_transport) rk rs r r r r r r Z ssl_protocolZ conmade_cbZ resume_cbr r r start_tls s> zBaseEventLoop.start_tls)r@ rB rA reuse_address reuse_portallow_broadcastr, c s | dur| j tjkr"td| s>s>|s>|s>|s>|s>| r~t |||||| d} ddd | D } td| d| d d} n ss|d krtd ||fd ff}nttd r|tj kr fD ] }|durt |t st dqڈ rx d dvrxz"t t jr.t W nF tyD Y n4 tyv } ztd | W Y d}~n d}~0 0 ||f fff}ni }d fdffD ]\}}|durt |trt|dkst d| j||tj||| dI dH }|s td|D ]:\}}}}}||f}||vr0ddg||< ||| |< qq fdd| D }|sjtdg }|tur|rtdntjdt dd |D ]\\}}\}}d} d} zxtj|tj|d } |rt | | r| tj tj d | d r| !| r*| s&| "| |I dH |} W n` tyn } z(| durP| # |$| W Y d} ~ n.d} ~ 0 | dur| # Y n0 qq|d | } | % } | &| | | | } | j'r rt(d | | nt)d | | z| I dH W n | # Y n0 | | fS ) zCreate datagram connection.Nz A UDP Socket was expected, got )ro remote_addrr@ rB rA r r r r> c s s$ | ] \}}|r| d | V qdS )=Nr )rF kvr r r rH r/ z9BaseEventLoop.create_datagram_endpoint.<locals>.<genexpr>zKsocket modifier keyword arguments can not be used when sock is specified. ()Fr zunexpected address family)NNAF_UNIXzstring is expected)r z2Unable to check or remove stale UNIX socket %r: %rr r: z2-tuple is expectedrt ru c s8 g | ]0\}} r |d du sr,|d du s||fqS )r Nr r )rF keyZ addr_pairro r r r r & s z:BaseEventLoop.create_datagram_endpoint.<locals>.<listcomp>z can not get address informationz~Passing `reuse_address=True` is no longer supported, as the usage of SO_REUSEPORT in UDP poses a significant security concern.zdThe *reuse_address* parameter has been deprecated as of 3.5.10 and is scheduled for removal in 3.11.) stacklevelrb z@Datagram endpoint local_addr=%r remote_addr=%r created: (%r, %r)z2Datagram endpoint remote_addr=%r created: (%r, %r))*rA r& r5 r' dictr itemsrd r% r r r r8 statS_ISSOCKosst_moderemoveFileNotFoundErrorr* r errorr r r~ _unsetr r r; r- r( r) SO_BROADCASTre rj r r< ri r r r@ r ) rk r ro r r@ rB rA r r r r, ZoptsZproblemsZr_addrZaddr_pairs_inforR errZ addr_infosidxr Zfamrl Zpror r r Z local_addressZremote_addressrZ r r rs r r r create_datagram_endpoint s z&BaseEventLoop.create_datagram_endpointc s^ |d d \}}t |||||g|dd R } | d ur>| gS |j||||||dI d H S d S )Nr: rG )rD r? ) rk r r@ rA rB rA r r> r? r@ r r r r~ t s z BaseEventLoop._ensure_resolvedc s8 | j ||f|tj|| dI d H }|s4td|d|S )N)r@ rA rA r z getaddrinfo(z) returned empty list)r~ r& r4 r* )rk r> r? r@ rA r r r r _create_server_getaddrinfo s z(BaseEventLoop._create_server_getaddrinfor ) r@ rA r, r r_ r r r r c s t |trtd| dur*|du r*td|dur:t| |dusLdurL|dur\td| du rxtjdkovtjdk} g } |dkrdg}n$t |t st |t j j s|g}n|} fdd |D }t j|d iI dH }ttj|}d }z8|D ]}|\}}}}}zt|||}W n6 tjyV jrNtjd |||d d Y qY n0 | | | rz|tjtjd | rt | t r|tj krt tdr|tj tj!d z|"| W q t#y } z(t#|j$d||j%& f dW Y d}~qd}~0 0 qd }W |sJ| D ]}|' q n |sH| D ]}|' q80 n4|du r^td|j(tj)krztd||g} | D ]}|*d qt+| |||| }| r|, t -dI dH jrt.d| |S )a1 Create a TCP server. The host parameter can be a string, in that case the TCP server is bound to host and port. The host parameter can also be a sequence of strings and in that case the TCP server is bound to all hosts of the sequence. If a host appears multiple times (possibly indirectly e.g. when hostnames resolve to the same IP address), the server is only bound once to that host. Return a Server object which can be used to stop the service. This method is a coroutine. z*ssl argument must be an SSLContext or NoneNrr rs posixcygwinr0 c s g | ]}j | d qS ))r@ rA )r )rF r> r@ rA r? rk r r r s z/BaseEventLoop.create_server.<locals>.<listcomp>r Fz:create_server() failed to create socket.socket(%r, %r, %r)Texc_info IPPROTO_IPV6z0error while attempting to bind on address %r: %sz)Neither host/port nor sock were specifiedr} r z %r is serving)/r r r8 r' r` r r r platformr rI abcIterabler r setrN rO rP r& r r r warningr< r( r) SO_REUSEADDRr- r; r r% r IPV6_V6ONLYre r* rh rf rg r rA r4 rd r r r r@ )rk r r> r? r@ rA r, r r_ r r r r r hostsfsr Z completedresrC socktyperB canonnamesar r r r r create_server s zBaseEventLoop.create_server)r_ r c s |j tjkrtd||dur.|s.td|dur>t| | j|||dd|dI dH \}}| jr~|d}t d||| ||fS ) a Handle an accepted connection. This is used by servers that accept connections outside of asyncio but that use asyncio to handle connections. This method is a coroutine. When completed, the coroutine returns a (transport, protocol) pair. r} Nrr r0 T)r r r& z%r handled: (%r, %r)) rA r& r4 r' r` r r r r r )rk r r, r_ r rs r r r r connect_accepted_socket s z%BaseEventLoop.connect_accepted_socketc sd | }| }| |||}z|I d H W n | Y n0 | jr\td| || ||fS )Nz Read pipe %r connected: (%r, %r))ri r r r r r filenork r r r r rs r r r connect_read_pipe s z BaseEventLoop.connect_read_pipec sd | }| }| |||}z|I d H W n | Y n0 | jr\td| || ||fS )Nz!Write pipe %r connected: (%r, %r))ri r r r r r r r r r r connect_write_pipe0 s z BaseEventLoop.connect_write_pipec C s |g}|d ur"| dt| |d urJ|tjkrJ| dt| n8|d urf| dt| |d ur| dt| td| d S )Nzstdin=zstdout=stderr=zstdout=zstderr= )r< r# r r! r r r )rk rB r r r r@ r r r _log_subprocess@ s z BaseEventLoop._log_subprocess) r r r universal_newlinesr r encodingerrorstextc s t |ttfstd|r"td|s.td|dkr>td| rJtd| d urZtd| d urjtd| } d }| jrd | }| |||| | j| |d ||||fi | I d H }| jr|d urtd || || fS ) Nzcmd must be a string universal_newlines must be Falsezshell must be Truer bufsize must be 0text must be Falseencoding must be Noneerrors must be Nonezrun shell command %rT%s: %r) r r6 r r' r r r r r@ )rk r cmdr r r r r r r r r r r debug_logrs r r r subprocess_shellM s6 z BaseEventLoop.subprocess_shellc s |r t d|rt d|dkr(t d| r4t d| d urDt d| d urTt d|f| }| }d }| jrd|}| |||| | j||d ||||fi | I d H }| jr|d urtd || ||fS ) Nr zshell must be Falser r r r r zexecute program Fr )r' r r r r r@ )rk r Zprogramr r r r r r r r r r r Z popen_argsr r rs r r r subprocess_execq s6 z BaseEventLoop.subprocess_execc C s | j S )zKReturn an exception handler, or None if the default one is in use. )r rw r r r get_exception_handler s z#BaseEventLoop.get_exception_handlerc C s( |dur t |s td||| _dS )a Set handler as the new event loop exception handler. If handler is None, the default exception handler will be set. If handler is a callable object, it should have a signature matching '(loop, context)', where 'loop' will be a reference to the active event loop, 'context' will be a dict object (see `call_exception_handler()` documentation for details about context). Nz+A callable object or None is expected, got )r r8 r )rk handlerr r r set_exception_handler s z#BaseEventLoop.set_exception_handlerc C s | d}|sd}| d}|dur6t|||jf}nd}d|vr`| jdur`| jjr`| jj|d< |g}t|D ]}|dv r|qn|| }|dkrd t|}d }|| 7 }n2|dkrd t|}d }|| 7 }nt |}| | d | qnt j d ||d dS )aE Default exception handler. This is called when an exception occurs and no exception handler is set, and can be called by a custom exception handler that wants to defer to the default behavior. This default handler logs the error message and other context-dependent information. In debug mode, a truncated stack trace is also appended showing where the given object (e.g. a handle or future or task) was created, if any. The context parameter has the same meaning as in `call_exception_handler()`. r z!Unhandled exception in event looprU NFZsource_tracebackZhandle_traceback> rU r r0 z+Object created at (most recent call last): z+Handle created at (most recent call last): rc r )getrA __traceback__r r sortedr traceback format_listrstripr r< r r ) rk r% r rU r Z log_linesr valuetbr r r default_exception_handler s< z'BaseEventLoop.default_exception_handlerc C s | j du rRz| | W q ttfy0 Y q tyN tjddd Y q0 nz| | | W n ttfyz Y nr ty } zZz| d||d W n6 ttfy Y n ty tjddd Y n0 W Y d}~n d}~0 0 dS )aD Call the current event loop's exception handler. The context argument is a dict containing the following keys: - 'message': Error message; - 'exception' (optional): Exception object; - 'future' (optional): Future instance; - 'task' (optional): Task instance; - 'handle' (optional): Handle instance; - 'protocol' (optional): Protocol instance; - 'transport' (optional): Transport instance; - 'socket' (optional): Socket instance; - 'asyncgen' (optional): Asynchronous generator that caused the exception. New keys maybe introduced in the future. Note: do not overload this method in an event loop subclass. For custom exception handling, use the `set_exception_handler()` method. Nz&Exception in default exception handlerTr z$Unhandled error in exception handler)r rU r% zeException in default exception handler while handling an unexpected error in custom exception handler)r r rV rW r r r )rk r% rZ r r r r s4 z$BaseEventLoop.call_exception_handlerc C s |j r dS | j| dS )z3Add a Handle to _scheduled (TimerHandle) or _ready.N) _cancelledr r< rk r r r r _add_callback s zBaseEventLoop._add_callbackc C s | | | dS )z6Like _add_callback() but called from a signal handler.N)r r r r r r _add_callback_signalsafe s z&BaseEventLoop._add_callback_signalsafec C s |j r| jd7 _dS )z3Notification that a TimerHandle has been cancelled.r N)r r r r r r _timer_handle_cancelled! s z%BaseEventLoop._timer_handle_cancelledc C s t | j}|tkr`| j| tkr`g }| jD ] }|jr<d|_q*|| q*t| || _d| _n4| jr| jd jr| jd8 _t | j}d|_q`d}| j s| j rd}n*| jr| jd j }t td|| t}| j|}| | | | j }| jr:| jd }|j |krq:t | j}d|_| j | qt | j }t|D ]} | j }|jrfqL| jrzJ|| _| } | | | } | | jkrt dt || W d| _nd| _0 n| qLd}dS )zRun one full iteration of the event loop. This calls all currently ready callbacks, polls for I/O, schedules the resulting callbacks, and finally schedules 'call_later' callbacks. Fr r Nz Executing %s took %.3f seconds) r r _MIN_SCHEDULED_TIMER_HANDLESr %_MIN_CANCELLED_TIMER_HANDLES_FRACTIONr r< r- heapifyheappopr r Z_whenrV maxr MAXIMUM_SELECT_TIMEOUT _selectorselectr r rangepopleftr r Z_runr r r r ) rk Z sched_countZ new_scheduledr timeoutr/ r end_timeZntodoirC rE r r r r & sh zBaseEventLoop._run_oncec C sH t |t | jkrd S |r2t | _ttj n t| j || _d S rE )r r r #get_coroutine_origin_tracking_depthr #set_coroutine_origin_tracking_depthr ZDEBUG_STACK_DEPTHrk Zenabledr r r r t s z,BaseEventLoop._set_coroutine_origin_trackingc C s | j S rE )r rw r r r r s zBaseEventLoop.get_debugc C s || _ | r | | j| d S rE )r r r r r r r r r s zBaseEventLoop.set_debug)N)N)NNN)NN)NN)N)r )r N)N)NN)FN)r N)NN)NN)Vr r r rm r ri r r r r r r r r r r r r r r r r r r r r r rX r r r r r$ r r r* r& r0 r, r1 r+ r r5 r< rF r? rH rR rL rN rK rn r r r r r r r r r& r4 r~ r r9 AI_PASSIVEr r r r r r r r r r r r r r r r r r r r r r r r r s & % / / z % "29Nr )r r )r )8__doc__rI collections.abcconcurrent.futuresr6 rv r- rN r r& r r r r r r r r r_ ImportErrorr0 r r r r r r r r r r r logr __all__r r r% r; r objectr r r# r- rD rS r[ r^ r` Protocolra ZAbstractServerr ZAbstractEventLoopr r r r r <module> sf ; Do