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base_events.cpython-310.pyc
o ie" @ s d Z ddlZddlZddlZddlZddlZddlZddlZddl Z ddl Z ddl Z ddl Z ddl Z ddlZddlZddlZddlZzddlZW n eyS dZY nw 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 s, | j }tt|dd tjrt|jS t| S )N__self__) _callback isinstancegetattrr Taskreprr str)handlecb r */usr/lib/python3.10/asyncio/base_events.py_format_handleJ s r c C s$ | t jkrdS | t jkrdS t| S )Nz<pipe>z<stdout>) subprocessPIPESTDOUTr )fdr r r _format_pipeS s r# c C sB t tds tdz | tjtjd W d S ty tdw )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 sp t tdsd S |dtjtjhvs| d u rd S |tjkr tj}n |tjkr(tj}nd S |d u r1d}n+t|tr=|dkr=d}n t|trI|dkrId}nzt |}W n t t fy[ Y d S w |tj krntj g}trm|tj n|g}t| tr{| d} d| v rd S |D ]2}z't|| tr|tjkr|||d| |||ffW S |||d| |ffW S ty Y qw d S )N inet_ptonr idna%)r% r& IPPROTO_TCP IPPROTO_UDP SOCK_STREAM SOCK_DGRAMr bytesr int TypeErrorr' AF_UNSPECAF_INET _HAS_IPv6appendr decoder. r* ) hostportfamilytypeprotoflowinfoscopeidafsafr r r _ipaddr_infog sR rH c C s t }| D ]}|d }||vrg ||< || | qt| }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) addrinfosfirst_address_family_countaddrinfos_by_familyaddrrA addrinfos_lists reorderedr r r _interleave_addrinfos s" r\ c C s4 | s| }t|ttfrd S t| d S rI ) cancelled exceptionr SystemExitKeyboardInterruptr _get_loopstop)futexcr r r _run_until_complete_cb s re TCP_NODELAYc C sL | j tjtjhv r | jtjkr"| jtjkr$| tjtj d d S d S d S d S Nr ) rA r& r; r rB r5 rC r3 r( rf r+ r r r _set_nodelay s rh c C s d S rI r r+ r r r rh s c C s$ t d urt| t jrtdd S d S )Nz"Socket cannot be of type SSLSocket)sslr SSLSocketr9 r+ r r r _check_ssl_socket s rk c @ sT e Zd Zdd Zdd Zdd Zdd Zd d Zd d Zd d Z dd Z dd Z dS )_SendfileFallbackProtocolc C sj t |tjs td|| _| | _| | _|j | _ | | | | j r0| jj | _d S d | _d S )Nz.transport should be _FlowControlMixin instance)r r _FlowControlMixinr9 _transport get_protocol_proto is_reading_should_resume_reading_protocol_paused_should_resume_writing pause_reading set_protocol_loop create_future_write_ready_fut)selftranspr r r __init__ s z"_SendfileFallbackProtocol.__init__c s4 | j r td| j}|d u rd S |I d H d S )NzConnection closed by peer)rn is_closingConnectionErrorry )rz rc r r r drain s z _SendfileFallbackProtocol.drainc C t d)Nz?Invalid state: connection should have been established already. RuntimeError)rz transportr r r connection_made z)_SendfileFallbackProtocol.connection_madec C s@ | j d ur|d u r| j td n| j | | j| d S )Nz Connection is closed by peer)ry set_exceptionr~ rp connection_lost)rz rd r r r r s z)_SendfileFallbackProtocol.connection_lostc C s | j d urd S | jj | _ d S rI )ry rn rw rx rz r r r pause_writing s z'_SendfileFallbackProtocol.pause_writingc C s$ | j d u rd S | j d d | _ d S )NF)ry set_resultr r r r resume_writing s z(_SendfileFallbackProtocol.resume_writingc C r Nz'Invalid state: reading should be pausedr )rz datar r r data_received r z'_SendfileFallbackProtocol.data_receivedc C r r r r r r r eof_received r z&_SendfileFallbackProtocol.eof_receivedc sL | j | j | jr| j | jd ur| j | jr$| j d S d S rI ) rn rv rp rr resume_readingry cancelrt r r r r r restore s z!_SendfileFallbackProtocol.restoreN) __name__ __module__ __qualname__r| r r r r r r r r r r r r rl s rl 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) rw _sockets _active_count_waiters_protocol_factory_backlog _ssl_context_ssl_handshake_timeout_serving_serving_forever_fut)rz loopsocketsprotocol_factory ssl_contextbacklogssl_handshake_timeoutr r r r| s zServer.__init__c C s d| j j d| jdS )N<z sockets=>) __class__r r r r r r __repr__% s zServer.__repr__c C s | j d usJ | jd7 _d S rg )r r r r r r _attach( s zServer._attachc C sD | j dksJ | j d8 _ | j dkr | jd u r | d S d S d S )Nr r )r r _wakeupr r r r _detach, s zServer._detachc C s, | j }d | _ |D ] }| s|| qd S rI )r doner )rz waiterswaiterr r r r 2 s zServer._wakeupc C sJ | j rd S d| _ | jD ]}|| j | j| j|| j| | j| j q d S )NT) r r listenr rw _start_servingr r r )rz r, r r r r 9 s zServer._start_servingc C | j S rI )rw r r r r get_loopC zServer.get_loopc C r rI )r r r r r is_servingF r zServer.is_servingc C s" | j d u rdS tdd | j D S )Nr c s s | ]}t |V qd S rI )r TransportSocket)rJ sr r r rL M s z!Server.sockets.<locals>.<genexpr>)r tupler r r r r I s zServer.socketsc C sr | j }|d u r d S d | _ |D ]}| j| qd| _| jd ur,| j s,| j d | _| jdkr7| d S d S )NFr ) r rw _stop_servingr r r r r r )rz r r, r r r closeO s z Server.closec s | tdI d H d S )Nr )r r sleepr r r r start_servingb s zServer.start_servingc s | j d urtd| d| jd u rtd| d| | j | _ z&z| j I d H W n tjyE z | | I d H W w W d | _ d S d | _ w )Nzserver z, is already being awaited on serve_forever()z is closed) r r r r rw rx r CancelledErrorr wait_closedr r r r serve_foreverh s& zServer.serve_foreverc s> | j d u s | jd u r d S | j }| j| |I d H d S rI )r r rw rx r= )rz r r r r r } s zServer.wait_closedN)r r r r| r r r r r r r propertyr r r r r r r r r r s r c @ s 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 Z2ddgdhZ3 dddXdXdXdddddddi djdkZ4 ddldmZ5ddd^dndoZ6dpdq Z7drds Z8ddddtdudvZ9 ddXdXdXe: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 _stoppingrM deque_ready _scheduled_default_executor _internal_fds _thread_idtimeget_clock_info resolution_clock_resolution_exception_handler set_debugr _is_debug_modeslow_callback_duration_current_handle _task_factory"_coroutine_origin_tracking_enabled&_coroutine_origin_tracking_saved_depthweakrefWeakSet _asyncgens_asyncgens_shutdown_called_executor_shutdown_calledr r r r r| 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_debugr r r r r s zBaseEventLoop.__repr__c C s t j| dS )z,Create a Future object attached to the loop.r )r Futurer r r r rx s zBaseEventLoop.create_futureN)namec C sP | | jdu rtj|| |d}|jr|jd= |S | | |}t|| |S )zDSchedule a coroutine object. Return a task object. N)r r ) _check_closedr r r _source_traceback_set_task_name)rz coror taskr r r create_task s zBaseEventLoop.create_taskc C s" |dur t |s td|| _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)callabler9 r )rz factoryr r r set_task_factory s z BaseEventLoop.set_task_factoryc C r )z<Return a task factory, or None if the default one is in use.)r r r r r get_task_factory z BaseEventLoop.get_task_factory)extraserverc C t )zCreate socket transport.NotImplementedError)rz r, protocolr r r r r r _make_socket_transport z$BaseEventLoop._make_socket_transportFT) server_sideserver_hostnamer r r call_connection_madec C r )zCreate SSL transport.r ) rz rawsockr sslcontextr r r r r r r r r r _make_ssl_transport z!BaseEventLoop._make_ssl_transportc C r )zCreate datagram transport.r )rz r, r addressr r r r r _make_datagram_transport r z&BaseEventLoop._make_datagram_transportc C r )zCreate read pipe transport.r rz piper r r r r r _make_read_pipe_transport r z'BaseEventLoop._make_read_pipe_transportc C r )z Create write pipe transport.r r r r r _make_write_pipe_transport r z(BaseEventLoop._make_write_pipe_transportc s t )z Create subprocess transport.r ) rz r argsshellstdinstdoutstderrbufsizer kwargsr r r _make_subprocess_transport s z(BaseEventLoop._make_subprocess_transportc C r )zWrite a byte to self-pipe, to wake up the event loop. This may be called from a different thread. The subclass is responsible for implementing the self-pipe. r r r r r _write_to_self r z BaseEventLoop._write_to_selfc C r )zProcess selector events.r )rz event_listr r r _process_events s z BaseEventLoop._process_eventsc C | j rtdd S )NzEvent loop is closed)r r r r r r r zBaseEventLoop._check_closedc C r )Nz!Executor shutdown has been called)r r r r r r _check_default_executor r z%BaseEventLoop._check_default_executorc C s. | j | | s| | j| d S d S rI )r discardr call_soon_threadsafer acloserz agenr r r _asyncgen_finalizer_hook s z&BaseEventLoop._asyncgen_finalizer_hookc C s. | j rtjd|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| js dS t| j}| j tjdd |D ddiI dH }t||D ]\}}t|t r?| d|||d q*dS )z,Shutdown all active asynchronous generators.TNc S s g | ]}| qS r )r )rJ agr r r <listcomp>$ s z4BaseEventLoop.shutdown_asyncgens.<locals>.<listcomp>return_exceptionsz;an error occurred during closing of asynchronous generator )messager^ asyncgen) r lenr rO clearr gatherzipr Exceptioncall_exception_handler)rz closing_agensresultsresultr r r r shutdown_asyncgens s, z BaseEventLoop.shutdown_asyncgensc s\ d| _ | jdu r dS | }tj| j|fd}| z |I dH W | dS | w )z.Schedule the shutdown of the default executor.TN)targetr )r r rx threadingThread _do_shutdownstartjoin)rz futurethreadr r r shutdown_default_executor0 s z'BaseEventLoop.shutdown_default_executorc C s| z| j jdd | s| |jd W d S W d S ty= } z| s2| |j| W Y d }~d S W Y d }~d S d }~ww )NTwait)r shutdownr r r r& r )rz r2 exr r r r/ = s zBaseEventLoop._do_shutdownc C s( | rtdt d urtdd S )Nz"This event loop is already runningz7Cannot run the event loop while another loop is running)r r r _get_running_loopr r r r _check_runningF s z BaseEventLoop._check_runningc C s | | | | j t }z5t | _tj | j | j d t | | | jr/nq'W d| _d| _t d | d tj | dS d| _d| _t d | d tj | w )zRun until stop() is called.) firstiter finalizerTFN)r r: _set_coroutine_origin_tracking_debugsysget_asyncgen_hooksr- get_identr set_asyncgen_hooksr r r _set_running_loop _run_oncer )rz old_agen_hooksr r r run_foreverM s4 zBaseEventLoop.run_foreverc C s | | t| }tj|| d}|rd|_|t z z| W n |r8| r8| s8| W | t n| t w | sNtd| 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 isfuturer ensure_future_log_destroy_pendingadd_done_callbackre rF r r] r^ remove_done_callbackr r* )rz r2 new_taskr r r run_until_completee 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 r r r r rb s zBaseEventLoop.stopc C st | rtd| jr dS | jrtd| d| _| j | j d| _ | j }|dur8d| _ |j dd dS 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 %rTFr5 ) r r r r> r debugr r# r r r r7 rz executorr r r r s zBaseEventLoop.closec C r )z*Returns True if the event loop was closed.)r r r r r r r zBaseEventLoop.is_closedc C s8 | s|d| t| d | s| d S d S d S )Nzunclosed event loop r )r r r r )rz _warnr r r __del__ s zBaseEventLoop.__del__c C s | j duS )z*Returns True if the event loop is running.N)r r 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 r r r r r s zBaseEventLoop.time)contextc G s4 | j | | |g|R d|i}|jr|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. rS r )call_atr r )rz delaycallbackrS r timerr r r call_later s zBaseEventLoop.call_laterc G sZ | | jr| | |d t|||| |}|jr!|jd= t| j | d|_ |S )z|Like call_later(), but uses an absolute time. Absolute time corresponds to the event loop's time() method. rT r T) r r> _check_thread_check_callbackr TimerHandler heapqheappushr )rz whenrV rS r rW r r r rT 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> rY rZ _call_soonr rz rV rS r r r r r r_ s zBaseEventLoop.call_soonc C sD t |s t |rtd| dt|s td| d|d S )Nz coroutines cannot be used with z()z"a callable object was expected by z(), got )r iscoroutineiscoroutinefunctionr9 r )rz rV methodr r r rZ s z BaseEventLoop._check_callbackc C s. t ||| |}|jr|jd= | j| |S )Nr )r Handler r r= )rz rV r rS r r r r r` s zBaseEventLoop._call_soonc C s, | j du rdS t }|| j krtddS )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- rA r )rz thread_idr r r rY s zBaseEventLoop._check_threadc G sB | | jr | |d | |||}|jr|jd= | |S )z"Like call_soon(), but thread-safe.r r )r r> rZ r` r r ra r r r r s z"BaseEventLoop.call_soon_threadsafec G sh | | jr | |d |d u r&| j}| |d u r&tjjdd}|| _tj|j |g|R | dS )Nrun_in_executorasyncio)thread_name_prefixr ) r r> rZ r r concurrentr ThreadPoolExecutor wrap_futuresubmit)rz rP funcr r r r rg ' s z BaseEventLoop.run_in_executorc C s& t |tjjstdtd || _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 rj r rk r r DeprecationWarningr rO r r r set_default_executor7 s z"BaseEventLoop.set_default_executorc C s | d|g}|r| d| |r | d| |r&| d| |r0| d| d|}td| | }t||||||} | | } d| d | d d d | }| | jkrit| | S t| | S ) N:zfamily=ztype=zproto=zflags=, zGet address info %szGetting address info z took g @@z.3fzms: ) r= r1 r rN r r& getaddrinfor info) rz r? r@ rA rB rC flagsmsgt0addrinfodtr r r _getaddrinfo_debug@ s( z BaseEventLoop._getaddrinfo_debugr rA rB rC rv c s4 | j r| j}ntj}| d |||||||I d H S rI )r> r{ r& rt rg )rz r? r@ rA rB rC rv getaddr_funcr r r rt X s zBaseEventLoop.getaddrinfoc s | d tj||I d H S rI )rg r& getnameinfo)rz sockaddrrv r r r r~ b s zBaseEventLoop.getnameinfo)fallbackc s | j r| dkrtdt| | |||| z | ||||I d H W S tjy< } z |s2 W Y d }~nd }~ww | ||||I d H S )Nr z the socket must be non-blocking) r> gettimeoutr' rk _check_sendfile_params_sock_sendfile_nativer SendfileNotAvailableError_sock_sendfile_fallback)rz r, fileoffsetcountr rd r r r sock_sendfilef s$ zBaseEventLoop.sock_sendfilec s t d|d|d)Nz-syscall sendfile is not available for socket z and file z combinationr r rz r, r r r r r r r u s z#BaseEventLoop._sock_sendfile_nativec s |r| | |rt|tjntj}t|}d}zL |r)t|| |}|dkr)n(t|d | }| d |j|I d H } | s?n| ||d | I d H || 7 }q|W |dkrdt |dre| || S S S |dkrwt |drx| || w w w )Nr Tseek) r minr !SENDFILE_FALLBACK_READBUFFER_SIZE bytearray memoryviewrg readinto sock_sendallr% ) rz r, r r r blocksizebuf total_sentviewreadr r r r | s8 z%BaseEventLoop._sock_sendfile_fallbackc C s dt |ddvr td|jtjkstd|d ur1t|ts&td||dkr1td|t|ts=td||dk rHtd|d S )Nbmodez$file should be opened in binary modez+only SOCK_STREAM type sockets are supportedz+count must be a positive integer (got {!r})r z0offset must be a non-negative integer (got {!r})) r r' rB r& r5 r r8 r9 formatr r r r r s4 z$BaseEventLoop._check_sendfile_paramsc sX g }| | |\}}}}} d} zzotj|||d} | d |durq|D ]<\} }}}} | |kr2q&z| | W n6 tyb } z d| d| j }t| j|} | | W Y d} ~ q&d} ~ ww |ri| td|d| | | I dH | W W d }}S ty } z| | | dur| d} ~ w | dur| d }}w )z$Create, bind and connect one socket.NrA rB rC Fz*error while attempting to bind on address : z&no matching local address with family=z found) r= r& setblockingbindr* strerrorlowererrnopop sock_connectr )rz r addr_infolocal_addr_infos my_exceptionsrA type_rC _r r, lfamilyladdrrd rw r r r _connect_sock sV zBaseEventLoop._connect_sock) ri rA rC rv r, local_addrr r happy_eyeballs_delay interleavec sd | dur |s t d| du r|r|st d|} | dur#|s#t d|dur+t| | dur5| du r5d} |dus=|dur|durEt dj||f|tj||dI dH }|s\td| durvj| |tj||dI dH sutdnd| rt|| }g | du r|D ]}z |I dH }W n ty Y qw ntj fd d |D | d I dH \}}}|du rd d D z.t dkrΈ d t d t fdd D r d td ddd D d w n|du rt d|jtjkr t d|j|||| | dI dH \}}jr.|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 timerA rB rC rv r !getaddrinfo() returned empty listc 3 s" | ] }t j |V qd S rI ) functoolspartialr )rJ ry )r laddr_infosrz r r rL + s z2BaseEventLoop.create_connection.<locals>.<genexpr>r c S s g | ] }|D ]}|qqS r r )rJ subrd r r r r 1 s z3BaseEventLoop.create_connection.<locals>.<listcomp>r c 3 s | ] }t | kV qd S rI r rJ rd )modelr r rL 8 s zMultiple exceptions: {}rs c s s | ]}t |V qd S rI r r r r r rL = s 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' rk _ensure_resolvedr& r5 r* r\ r r staggered_racer" r allr r1 rB _create_connection_transportr> get_extra_infor rN )rz r r? r@ ri rA rC rv r, r r r r r infosry r r r r )r r r rz r create_connection s z BaseEventLoop.create_connectionc s~ | d | }| }|r%t|trd n|} | j||| ||||d} n| |||} z |I d H W | |fS | )NFr r r )r rx r boolr r r ) rz r, r ri r r r r r r r r r r r Z s$ z*BaseEventLoop._create_connection_transportc s | r tdt|dtjj}|tjju r td||tjju rGz | ||||I dH W S tj yF } z |s< W Y d}~nd}~ww |sPtd|| ||||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 closing_sendfile_compatiblez(sendfile is not supported for transport NzHfallback is disabled and native sendfile is not supported for transport ) r} r r r _SendfileMode UNSUPPORTED TRY_NATIVE_sendfile_nativer r _sendfile_fallback)rz r r r r r r rd r r r sendfilet s< zBaseEventLoop.sendfilec s t d)Nz!sendfile syscall is not supportedr )rz r{ r r r r r r r s z BaseEventLoop._sendfile_nativec s@ |r| | |rt|dnd}t|}d}t|}zl |rDt|| |}|dkrD|W |dkr<t|dr<| || | I d H S t|d | } | d |j| I d H } | ss|W |dkrkt|drk| || | I d H S | I d H | | d | || 7 }q |dkrt|dr| || | I d H w )Ni @ r Tr ) r r r rl r% r r rg r r write) rz r{ r r r r r r rC r r r r r r s< z BaseEventLoop._sendfile_fallbackr c s t du r tdt|t jstd|t|dds$td|d| }tj| ||||||dd}| | | | |j |} | |j } z |I dH W |jS tyh | | | w ) zzUpgrade transport to TLS. Return a new transport that *protocol* should start using immediately. Nz"Python ssl module is not availablez@sslcontext is expected to be an instance of ssl.SSLContext, got _start_tls_compatibleFz transport z is not supported by start_tls())r r )ri r r SSLContextr9 r rx r SSLProtocolru rv r_ r r BaseExceptionr r _app_transport) rz r r r r r r r ssl_protocol conmade_cb resume_cbr r r start_tls sB zBaseEventLoop.start_tls)rA rC rv reuse_address reuse_portallow_broadcastr, c s | durI| j tjkrtd| s s |s |s |s |s | r@t |||||| d} ddd | D } td| d| d d} nu s]s]|d krUtd ||fd ff}nttd r|tj kr fD ]}|durzt |t szt dqk r d dvrzt t jrt W n! ty Y n ty } z td | W Y d}~nd}~ww ||f fff}nji }d fdffD ]L\}}|durt |trt|dksJ d| j||tj||| dI dH }|std|D ] \}}}}}||f}||vrddg||< ||| |< qqɇ fdd| D }|s)tdg }|tur?|r7tdtjdt dd |D ]x\\}}\}}d} d} z<tj|tj|d } |r^t | | rj| tj tj d | d rw| !| r| s| "| |I dH |} W n. ty } z| dur| # |$| W Y d} ~ qAd} ~ w | dur| # n|d | } | % } | &| | | | } | j'r rt(d | | nt)d | | z | I dH W | | fS | # ) zCreate datagram connection.Nz A UDP Socket was expected, got )r remote_addrrA rC rv r r r rs c s s& | ]\}}|r| d | V qdS )=Nr )rJ kvr r r rL s $ z9BaseEventLoop.create_datagram_endpoint.<locals>.<genexpr>zKsocket modifier keyword arguments can not be used when sock is specified. ()Fr zunexpected address familyNNAF_UNIXzstring is expected)r z2Unable to check or remove stale UNIX socket %r: %rr ro z2-tuple is expectedr r c s8 g | ]\}} r|d du sr|d du s||fqS )r Nr r )rJ key addr_pairr r r r r 3 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.) stacklevelr z@Datagram endpoint local_addr=%r remote_addr=%r created: (%r, %r)z2Datagram endpoint remote_addr=%r created: (%r, %r))*rB r& r6 r' dictr1 itemsr r% r r r r9 statS_ISSOCKosst_moderemoveFileNotFoundErrorr* r errorr r" r _unsetr r rp r- r( r) SO_BROADCASTr r r r= rx r r> ru rN ) rz r r r rA rC rv r r r r, optsproblemsr_addraddr_pairs_inforY err addr_infosidxr famr pror r r local_addressremote_addressrd r r r 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 )Nro r| )rH rt ) rz r rA rB rC rv r r? r@ ru r r r r s z BaseEventLoop._ensure_resolvedc s: | j ||f|tj|| dI d H }|std|d|S )N)rA rB rv r z getaddrinfo(z) returned empty list)r r& r5 r* )rz r? r@ rA rv r r r r _create_server_getaddrinfo s z(BaseEventLoop._create_server_getaddrinfor ) rA rv r, r ri r r r r c s t |tr td| dur|du rtd|dur t| |dus'dur|dur/td| du r=tjdko<tjdk} g } |dkrGdg}nt |t sSt |t j j sW|g}n|} fdd |D }t j| I dH }ttj|}d }z|D ]v}|\}}}}}z t|||}W n tjy jrtjd |||d d Y qzw | | | r|tjtjd | rt | t r|tj krt tdr|tj tj!d z|"| W qz t#y } zt#|j$d||j%& f dd}~ww d }W |s| D ]}|' qn)|s | D ]}|' qw w |du rtd|j(tj)kr&td||g} | D ]}|*d q+t+| |||| }| rL|, t -dI dH jrVt.d| |S )a1 Create a TCP server. The host parameter can be a string, in that case the TCP server is bound to host and port. The host parameter can also be a sequence of strings and in that case the TCP server is bound to all hosts of the sequence. If a host appears multiple times (possibly indirectly e.g. when hostnames resolve to the same IP address), the server is only bound once to that host. Return a Server object which can be used to stop the service. This method is a coroutine. z*ssl argument must be an SSLContext or NoneNr r posixcygwinr0 c s g | ] }j | d qS ))rA rv )r )rJ r? rA rv r@ rz r r r s z/BaseEventLoop.create_server.<locals>.<listcomp>Fz:create_server() failed to create socket.socket(%r, %r, %r)Texc_info IPPROTO_IPV6z0error while attempting to bind on address %r: %sz)Neither host/port nor sock were specifiedr r z %r is serving)/r r r9 r' rk r r r? platformr rM abcIterabler r$ setrR rS rT r& r r> r warningr= r( r) SO_REUSEADDRr- r< r r% r IPV6_V6ONLYr r* r r r r rB r5 r r r r ru )rz r r? r@ rA rv r, r ri r r r r r hostsfsr completedresrG socktyperC canonnamesar r r r r create_server s zBaseEventLoop.create_server)ri r c s |j tjkrtd||d ur|std|d ur t| | j|||dd|dI d H \}}| jr@|d}t d||| ||fS )Nr r r0 T)r r r& z%r handled: (%r, %r)) rB r& r5 r' rk r r> r r rN )rz r r, ri r r r r r r connect_accepted_socket s" z%BaseEventLoop.connect_accepted_socketc ` | }| }| |||}z|I d H W n | | jr,td| || ||fS )Nz Read pipe %r connected: (%r, %r))rx r r r> r rN filenorz r r r r r r r r connect_read_pipe% z BaseEventLoop.connect_read_pipec r )Nz!Write pipe %r connected: (%r, %r))rx r r r> r rN r r r r r connect_write_pipe5 r z BaseEventLoop.connect_write_pipec C s |g}|d ur| dt| |d ur%|tjkr%| dt| n |d ur3| dt| |d urA| dt| td| d S )Nzstdin=zstdout=stderr=zstdout=zstderr= )r= r# r r! r rN r1 )rz rw r r r ru r r r _log_subprocessE s z BaseEventLoop._log_subprocess) r r r universal_newlinesr r encodingerrorstextc s t |ttfs td|rtd|std|dkr td| r&td| d ur.td| d ur6td| } d }| jrJd | }| |||| | j| |d ||||fi | I d H }| jrj|d urjtd || || 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 r7 r r' r> r r r ru )rz r cmdr r r r r r r r r r r debug_logr r r r subprocess_shellR s8 z BaseEventLoop.subprocess_shellc s |rt d|r t d|dkrt d| rt d| d ur#t d| d ur+t d|f| }| }d }| jrEd|}| |||| | j||d ||||fi | I d H }| jre|d uretd || ||fS ) Nr zshell must be Falser r r r! r" zexecute program Fr# )r' r> r r r ru )rz r programr r r r r r r r r r r popen_argsr r% r r r r subprocess_execv s8 z BaseEventLoop.subprocess_execc C r )zKReturn an exception handler, or None if the default one is in use. )r r r r r get_exception_handler s z#BaseEventLoop.get_exception_handlerc C s( |durt |std||| _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 r9 r )rz handlerr r r set_exception_handler s z#BaseEventLoop.set_exception_handlerc C s | d}|s d}| d}|durt|||jf}nd}d|vr0| jdur0| jjr0| jj|d< |g}t|D ]C}|dv r>q7|| }|dkrWd t|}d }|| 7 }n|dkrld t|}d }|| 7 }nt |}| | d | q7t 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 loopr^ NFsource_tracebackhandle_traceback> r r^ r0 z+Object created at (most recent call last): z+Handle created at (most recent call last): r r )getrB __traceback__r r sortedr1 traceback format_listrstripr r= r r ) rz rS r r^ r log_linesr valuetbr r r default_exception_handler s: z'BaseEventLoop.default_exception_handlerc C s | j du r(z| | W dS ttfy ty' tjddd Y dS w z | | | W dS ttfy; tyy } z3z | d||d W n ttfyW tyf tjddd Y nw W Y d}~dS W Y d}~dS d}~ww )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$Unhandled error in exception handler)r r^ rS zeException in default exception handler while handling an unexpected error in custom exception handler)r r9 r_ r` r r r )rz rS rd r r r r' s@ z$BaseEventLoop.call_exception_handlerc C s |j s | j| dS dS )zAdd a Handle to _ready.N) _cancelledr r= rz 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 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}|tkr0| j| tkr0g }| jD ]}|jr d|_q|| qt| || _d| _n"| jrR| jd jrR| jd8 _t | j}d|_| jrR| jd js9d}| j sZ| j r]d}n| jrr| jd j }t td|| t}| j|}| | d}| | j }| jr| jd }|j |krnt | j}d|_| j | | jst | j }t|D ];} | j }|jrq| jrz$|| _| } | | | } | | jkrt dt || W d| _qd| _w | qd}dS )zRun one full iteration of the event loop. This calls all currently ready callbacks, polls for I/O, schedules the resulting callbacks, and finally schedules 'call_later' callbacks. Fr r Nz Executing %s took %.3f seconds) r" r _MIN_SCHEDULED_TIMER_HANDLESr %_MIN_CANCELLED_TIMER_HANDLES_FRACTIONr: r= r\ heapifyheappopr r _whenr maxr MAXIMUM_SELECT_TIMEOUT _selectorselectr r rangepopleftr> r _runr r r r ) rz sched_count new_scheduledr timeoutr^ r end_timentodoirx rz r r r rD ( sn zBaseEventLoop._run_oncec C sH t |t | jkr d S |rt | _ttj nt| j || _d S rI )r r r? #get_coroutine_origin_tracking_depthr #set_coroutine_origin_tracking_depthr DEBUG_STACK_DEPTHrz enabledr r r r= x s z,BaseEventLoop._set_coroutine_origin_trackingc C r rI )r> r r r r r r zBaseEventLoop.get_debugc C s$ || _ | r| | j| d S d S rI )r> r r r= rT r r r r s zBaseEventLoop.set_debugrI )NNNr )r )r N)FN)Vr r r r| r rx r r r r r r r r r r r r r r r r+ r4 r/ r: rF rM rb r r r r rR r r rX rT r_ rZ r` rY r rg rq r{ rt r~ r r r r r r r r r r r r r r& r5 r r r: AI_PASSIVEr r r r r r r r& r) r* r, r9 r' r< r= r> rD r= r r r r r r r s & - / / z % "29P r )r r )r )8__doc__rM collections.abcconcurrent.futuresrj r r\ rR r r& r r r- r r3 r? r r ri ImportErrorr0 r r r r r r r r r r r logr __all__r? r@ r% r< rE objectr r r# r- rH r\ re rh rk Protocolrl AbstractServerr AbstractEventLoopr r r r r <module> sj ; Do