← Back
Editing: base_events.cpython-38.pyc
U e5d� � @ s� d Z ddlZddlZddlZddlZddlZddlZddlZddl Z ddl Z ddl Z ddl Z ddl Z ddlZddlZddlZddlZz ddlZW n ek r� dZY nX 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$e%e d�Z&dZ'e(� Z)dd� Z*dd� Z+dd� Z,d+dd �Z-d,d d �Z.d d � Z/e%e d!��r�d"d#� Z0nd$d#� Z0G d%d&� d&ej1�Z2G d'd(� d(ej3�Z4G d)d*� d*ej5�Z6dS )-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)� BaseEventLoop�d g �?�AF_INET6i�Q c C s0 | j }tt|dd �tj�r$t|j�S t| �S d S )N�__self__)Z _callback� isinstance�getattrr �Task�reprr �str)�handle�cb� r �+/usr/lib64/python3.8/asyncio/base_events.py�_format_handleJ s r c C s( | t jkrdS | t jkr dS t| �S d S )Nz<pipe>z<stdout>)� subprocess�PIPE�STDOUTr )�fdr r r � _format_pipeS s r! c C sL t td�std��n4z| �tjtjd� W n tk rF td��Y nX d S )N� SO_REUSEPORTz)reuse_port not supported by socket moduler zTreuse_port not supported by socket module, SO_REUSEPORT defined but not implemented.)�hasattr�socket� ValueError� setsockopt� SOL_SOCKETr" �OSError��sockr r r �_set_reuseport\ s r+ c C s� t td�sd S |dtjtjhks(| d kr,d S |tjkr>tj}n|tjkrPtj}nd S |d krbd}nXt|t�rz|dkrzd}n@t|t�r�|dkr�d}n(z t |�}W n t t fk r� Y d S X |tj kr�tj g}tr�|�tj� n|g}t| t�r�| �d�} d| k�rd S |D ]t}zVt�|| � t�rJ|tjk�rJ|||d| |||ffW S |||d| |ffW S W n tk �rz Y nX �q d S )N� inet_ptonr � � Zidna�%)r# r$ � IPPROTO_TCPZ IPPROTO_UDP� SOCK_STREAM� SOCK_DGRAMr �bytesr �int� TypeErrorr% � AF_UNSPEC�AF_INET� _HAS_IPv6�appendr �decoder, r( ) �host�port�family�type�protoZflowinfoZscopeidZafs�afr r r � _ipaddr_infog sN � rA c C s� t �� }| D ]*}|d }||kr(g ||< || �|� q t|�� �}g }|dkr||�|d d|d � � |d d|d �= |�dd� tj�tj |� �D �� |S )z-Interleave list of addrinfo tuples by family.r r Nc s s | ]}|d k r|V qd S �Nr )�.0�ar r r � <genexpr>� s �z(_interleave_addrinfos.<locals>.<genexpr>) � collections� OrderedDictr9 �list�values�extend� itertools�chain� from_iterable� zip_longest)Z addrinfosZfirst_address_family_countZaddrinfos_by_family�addrr= Zaddrinfos_listsZ reorderedr r r �_interleave_addrinfos� s" ��rP c C s4 | � � s"| �� }t|ttf�r"d S t�| ��� d S rB )� cancelled� exceptionr � SystemExit�KeyboardInterruptr Z _get_loop�stop)�fut�excr r r �_run_until_complete_cb� s rX � TCP_NODELAYc C s@ | j tjtjhkr<| jtjkr<| jtjkr<| �tjtj d� d S �Nr ) r= r$ r7 r r> r1 r? r0 r& rY r) r r r � _set_nodelay� s � �r[ c C s d S rB r r) r r r r[ � s c @ sT e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dd� Z dS )�_SendfileFallbackProtocolc C sh t |tj�std��|| _|�� | _|�� | _|j | _ |� � |� | � | j r^| jj �� | _nd | _d S )Nz.transport should be _FlowControlMixin instance)r r Z_FlowControlMixinr5 � _transportZ get_protocol�_protoZ is_reading�_should_resume_readingZ_protocol_paused�_should_resume_writing� pause_reading� set_protocol�_loop� create_future�_write_ready_fut)�self�transpr r r �__init__� s z"_SendfileFallbackProtocol.__init__c � s2 | j �� rtd��| j}|d kr$d S |I d H d S )NzConnection closed by peer)r] � is_closing�ConnectionErrorre )rf rV r r r �drain� s z _SendfileFallbackProtocol.drainc C s t d��d S )Nz?Invalid state: connection should have been established already.�� RuntimeError)rf � transportr r r �connection_made� s z)_SendfileFallbackProtocol.connection_madec C s@ | j d k r0|d kr$| j �td�� n | j �|� | j�|� d S )Nz Connection is closed by peer)re Z set_exceptionrj r^ �connection_lost)rf rW r r r rp � s � z)_SendfileFallbackProtocol.connection_lostc C s | j d k rd S | jj�� | _ d S rB )re r] rc rd �rf r r r � pause_writing� s z'_SendfileFallbackProtocol.pause_writingc C s$ | j d krd S | j �d� d | _ d S )NF)re � set_resultrq r r r �resume_writing� s z(_SendfileFallbackProtocol.resume_writingc C s t d��d S �Nz'Invalid state: reading should be pausedrl )rf �datar r r � data_received� s z'_SendfileFallbackProtocol.data_receivedc C s t d��d S ru rl rq r r r � eof_received s z&_SendfileFallbackProtocol.eof_receivedc � sF | j �| j� | jr | j �� | jd k r2| j�� | jrB| j�� d S rB ) r] rb r^ r_ �resume_readingre �cancelr` rt rq r r r �restore s z!_SendfileFallbackProtocol.restoreN) �__name__� __module__� __qualname__rh rk ro rp rr rt rw rx r{ r r r r r\ � s r\ 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 ) �Serverc C s@ || _ || _d| _g | _|| _|| _|| _|| _d| _d | _ d S )Nr F) rc �_sockets� _active_count�_waiters�_protocol_factory�_backlog� _ssl_context�_ssl_handshake_timeout�_serving�_serving_forever_fut)rf �loop�sockets�protocol_factoryZ ssl_context�backlog�ssl_handshake_timeoutr r r rh s zServer.__init__c C s d| j j� d| j�d�S )N�<z sockets=�>)� __class__r| r� rq r r r �__repr__ s zServer.__repr__c C s | j d k st�| jd7 _d S rZ )r� �AssertionErrorr� rq r r r �_attach# s zServer._attachc C s< | j dkst�| j d8 _ | j dkr8| jd kr8| �� d S )Nr r )r� r� r� �_wakeuprq r r r �_detach' s zServer._detachc C s, | j }d | _ |D ]}|�� s|�|� qd S rB )r� �doners )rf �waiters�waiterr r r r� - s zServer._wakeupc C sJ | j r d S d| _ | jD ].}|�| j� | j�| j|| j| | j| j� qd S )NT) r� r� Zlistenr� rc �_start_servingr� r� r� )rf r* r r r r� 4 s �zServer._start_servingc C s | j S rB )rc rq r r r �get_loop> s zServer.get_loopc C s | j S rB )r� rq r r r � is_servingA s zServer.is_servingc C s" | j d krdS tdd� | j D ��S )Nr c s s | ]}t �|�V qd S rB )r ZTransportSocket)rC �sr r r rE H s z!Server.sockets.<locals>.<genexpr>)r� �tuplerq r r r r� D s zServer.socketsc C sn | j }|d krd S d | _ |D ]}| j�|� q d| _| jd k rX| j�� sX| j�� d | _| jdkrj| �� d S )NFr ) r� rc Z _stop_servingr� r� r� rz r� r� )rf r� r* r r r �closeJ s � z Server.closec � s" | � � tjd| jd�I d H d S )Nr �r� )r� r �sleeprc rq r r r � start_serving] s zServer.start_servingc � s� | j d k rtd| �d���| jd kr4td| �d���| �� | j�� | _ zLz| j I d H W n6 tjk r� z| �� | � � I d H W 5 � X Y nX W 5 d | _ X d S )Nzserver z, is already being awaited on serve_forever()z is closed) r� rm r� r� rc rd r ZCancelledErrorr� � wait_closedrq r r r � serve_foreverc s � zServer.serve_foreverc � s< | j d ks| jd krd S | j�� }| j�|� |I d H d S rB )r� r� rc rd r9 )rf r� r r r r� x s zServer.wait_closedN)r| r} r~ rh r� r� r� r� r� r� r� �propertyr� r� r� r� r� r r r r r s r c @ sP e Zd Zdd� Zdd� Zdd� Zdd�d d �Zd d � Zd d� Zd�ddd�dd�Z d�ddddddd�dd�Z d�dd�Z d�dd�Z d�dd �Z d�d d �Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Zd5d6� Zej fd7d8�Z d9d:� Z d;d<� Z dd=�d>d?�Z dd=�d@dA�Z!dd=�dBdC�Z"dDdE� Z#dFdG� Z$dHdI� Z%dd=�dJdK�Z&dLdM� Z'dNdO� Z(dPdQ� Z)dRdRdRdRdS�dTdU�Z*d�dVdW�Z+d�ddX�dYdZ�Z,d[d\� Z-d]d^� Z.d_d`� Z/d�dadb�Z0d�ddRdRdRdddddddc� ddde�Z1d�dfdg�Z2d�ddX�dhdi�Z3djdk� Z4dldm� Z5ddddn�dodp�Z6d�dRdRdRe7ddddq�drds�Z8dRe9j:dRdRdS�dtdu�Z;dvdw� Z<d�e9j=e9j>ddxddddddy� dzd{�Z?ddd|�d}d~�Z@dd�� ZAd�d�� ZBd�d�� ZCeDjEeDjEeDjEdddRdddd�� d�d��ZFeDjEeDjEeDjEdddRdddd�� d�d��ZGd�d�� ZHd�d�� ZId�d�� ZJd�d�� ZKd�d�� ZLd�d�� ZMd�d�� ZNd�d�� ZOd�d�� ZPd�d�� ZQd�d�� ZRdS )�r c C s� d| _ d| _d| _t�� | _g | _d | _d| _d | _ t � d�j | _ d | _| �t�� � d| _d | _d | _d| _d | _t�� | _d| _d S )Nr F� monotonicg�������?)�_timer_cancelled_count�_closed� _stoppingrF �deque�_ready� _scheduled�_default_executorZ _internal_fds� _thread_id�time�get_clock_infoZ resolution�_clock_resolution�_exception_handler� set_debugr Z_is_debug_mode�slow_callback_duration�_current_handle� _task_factory�"_coroutine_origin_tracking_enabled�&_coroutine_origin_tracking_saved_depth�weakrefZWeakSet� _asyncgens�_asyncgens_shutdown_calledrq r r r rh � 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_debugrq r r r r� � s ,�zBaseEventLoop.__repr__c C s t j| d�S )z,Create a Future object attached to the loop.r� )r ZFuturerq r r r rd � s zBaseEventLoop.create_futureN)�namec C sN | � � | jdkr2tj|| |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)rf �coror� Ztaskr r r � create_task� s zBaseEventLoop.create_taskc C s" |dk rt |�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)�callabler5 r� )rf �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� rq r r r �get_task_factory� s z BaseEventLoop.get_task_factory)�extra�serverc C s t �dS )zCreate socket transport.N��NotImplementedError)rf r* �protocolr� r� r� r r r �_make_socket_transport� s z$BaseEventLoop._make_socket_transportFT)� server_side�server_hostnamer� r� r� �call_connection_madec C s t �dS )zCreate SSL transport.Nr� ) rf 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� )rf 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� �rf �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� ) rf r� �args�shell�stdin�stdout�stderr�bufsizer� �kwargsr r r �_make_subprocess_transport� s z(BaseEventLoop._make_subprocess_transportc C s t �dS )z�Write 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. Nr� rq r r r �_write_to_self� s z BaseEventLoop._write_to_selfc C s t �dS )zProcess selector events.Nr� )rf � event_listr r r �_process_events� s z BaseEventLoop._process_eventsc C s | j rtd��d S )NzEvent loop is closed)r� rm rq r r r r� � s zBaseEventLoop._check_closedc C s* | j �|� | �� s&| �| j|�� � d S rB )r� �discardr� �call_soon_threadsafer� �aclose�rf �agenr r r �_asyncgen_finalizer_hook� s z&BaseEventLoop._asyncgen_finalizer_hookc C s. | j r tjd|�d�t| d� | j�|� d S )Nzasynchronous generator z3 was scheduled after loop.shutdown_asyncgens() call��source)r� �warnings�warn�ResourceWarningr� �addr� r r r �_asyncgen_firstiter_hook s �z&BaseEventLoop._asyncgen_firstiter_hookc � s� d| _ t| j�sdS t| j�}| j�� tjdd� |D �d| d��I dH }t||�D ]*\}}t|t �rT| � d|��||d�� qTdS )z,Shutdown all active asynchronous generators.TNc S s g | ] }|� � �qS r )r� )rC Zagr r r � <listcomp> s z4BaseEventLoop.shutdown_asyncgens.<locals>.<listcomp>)Zreturn_exceptionsr� z;an error occurred during closing of asynchronous generator )�messagerR Zasyncgen) r� �lenr� rH �clearr �gather�zipr � Exception�call_exception_handler)rf Z closing_agensZresults�resultr� r r r �shutdown_asyncgens s" � �z BaseEventLoop.shutdown_asyncgensc C s( | � � rtd��t�� d k r$td��d S )Nz"This event loop is already runningz7Cannot run the event loop while another loop is running)r� rm r Z_get_running_looprq r r r �_check_running& s �z BaseEventLoop._check_runningc C s� | � � | �� | �| j� t�� | _t�� }tj | j | j d� z t �| � | �� | j rLq^qLW 5 d| _ d| _t �d� | �d� tj |� X dS )zRun until stop() is called.)� firstiter� finalizerFN)r� r� � _set_coroutine_origin_tracking�_debug� threading� get_identr� �sys�get_asyncgen_hooks�set_asyncgen_hooksr� r� r� r Z_set_running_loop� _run_once)rf Zold_agen_hooksr r r � run_forever- s$ � zBaseEventLoop.run_foreverc C s� | � � | �� t�|� }tj|| d�}|r4d|_|�t� z<z | � � W n* |rp|� � rp|� � sp|� � � Y nX W 5 |� t� X |� � s�td��|�� 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_pendingZadd_done_callbackrX Zremove_done_callbackr r� rQ rR rm r� )rf ZfutureZnew_taskr r r �run_until_completeD s" z BaseEventLoop.run_until_completec C s d| _ dS )z�Stop 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� rq r r r rU j s zBaseEventLoop.stopc C sj | � � rtd��| jrdS | jr,t�d| � d| _| j�� | j�� | j }|dk rfd| _ |j dd� dS )z�Close 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 %rTF)�wait) r� rm r� r� r �debugr� r� r� r� Zshutdown�rf �executorr r r r� r s zBaseEventLoop.closec C s | j S )z*Returns True if the event loop was closed.)r� rq 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� )rf Z_warnr r r �__del__� s zBaseEventLoop.__del__c C s | j dk S )z*Returns True if the event loop is running.N)r� rq r r r r� � s zBaseEventLoop.is_runningc C s t �� S )z�Return 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� rq r r r r� � s zBaseEventLoop.time)�contextc G s2 | j | �� | |f|�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. r r� )�call_atr� r� )rf Zdelay�callbackr 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 � TimerHandler� �heapq�heappushr� )rf �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� �rf r r r� r r r r r � s zBaseEventLoop.call_soonc C sD t �|�st �|�r$td|� d���t|�s@td|� d|����d S )Nz coroutines cannot be used with z()z"a callable object was expected by z(), got )r Z iscoroutineZiscoroutinefunctionr5 r� )rf r �methodr r r r � s � ��z BaseEventLoop._check_callbackc C s. t �||| |�}|jr |jd= | j�|� |S )Nr� )r �Handler� r� r9 )rf r r� r r r r r r � s zBaseEventLoop._call_soonc C s, | j dkrdS t�� }|| j kr(td��dS )ao Check that the current thread is the thread running the event loop. Non-thread-safe methods of this class make this assumption and will likely behave incorrectly when the assumption is violated. Should only be called when (self._debug == True). The caller is responsible for checking this condition for performance reasons. NzMNon-thread-safe operation invoked on an event loop other than the current one)r� r r rm )rf Z thread_idr r r r � s �zBaseEventLoop._check_threadc G sB | � � | jr| �|d� | �|||�}|jr6|jd= | �� |S )z"Like call_soon(), but thread-safe.r� r� )r� r� r r r� r� r r r r r� � s z"BaseEventLoop.call_soon_threadsafec G sZ | � � | jr| �|d� |d kr@| j}|d kr@tj�� }|| _tj|j|f|�� | d�S )N�run_in_executorr� ) r� r� r r� � concurrentr �ThreadPoolExecutorZ wrap_futureZsubmit)rf r �funcr� r r r r s �z BaseEventLoop.run_in_executorc C s& t |tjj�s t�dtd� || _d S )Nz{Using the default executor that is not an instance of ThreadPoolExecutor is deprecated and will be prohibited in Python 3.9� )r r r r r� r� �DeprecationWarningr� r r r r �set_default_executor s �z"BaseEventLoop.set_default_executorc C s� |� d|��g}|r$|� d|��� |r8|� d|��� |rL|� d|��� |r`|� d|��� d�|�}t�d|� | �� }t�||||||�} | �� | } d|� d | d d �d | ��}| | jkr�t�|� n t�|� | S ) N�:zfamily=ztype=zproto=zflags=�, zGet address info %szGetting address info z took g @�@z.3fzms: ) r9 �joinr r r� r$ � getaddrinfor� �info) rf r; r< r= r> r? �flags�msg�t0�addrinfo�dtr r r �_getaddrinfo_debug s& z BaseEventLoop._getaddrinfo_debugr �r= r> r? r) c � s2 | j r| j}ntj}| �d |||||||�I d H S rB )r� r. r$ r' r )rf r; r< r= r> r? r) Z getaddr_funcr r r r' 2 s �zBaseEventLoop.getaddrinfoc � s | � d tj||�I d H S rB )r r$ � getnameinfo)rf Zsockaddrr) r r r r0 < s �zBaseEventLoop.getnameinfo)�fallbackc � s� | j r|�� dkrtd��| �||||� z| �||||�I d H W S tjk rl } z |s\� W 5 d }~X Y nX | �||||�I d H S )Nr z the socket must be non-blocking)r� Z gettimeoutr% �_check_sendfile_params�_sock_sendfile_nativer �SendfileNotAvailableError�_sock_sendfile_fallback)rf r* �file�offset�countr1 rW r r r � sock_sendfile@ s � �zBaseEventLoop.sock_sendfilec � s t �d|�d���d S )Nz-syscall sendfile is not available for socket z and file {file!r} combination�r r4 �rf r* r6 r7 r8 r r r r3 N s �z#BaseEventLoop._sock_sendfile_nativec � s� |r|� |� |r t|tj�ntj}t|�}d}zt|rNt|| |�}|dkrNq�t|�d |� }| �d |j|�I d H } | szq�| � ||d | � �I d H || 7 }q2|W �S |dkr�t|d�r�|� || � X d S )Nr �seek) r< �minr Z!SENDFILE_FALLBACK_READBUFFER_SIZE� bytearrayr# � memoryviewr �readintoZ sock_sendall) rf r* r6 r7 r8 � blocksize�buf� total_sent�view�readr r r r5 U s, �� z%BaseEventLoop._sock_sendfile_fallbackc C s� dt |dd�krtd��|jtjks,td��|d k rbt|t�sLtd�|���|dkrbtd�|���t|t�sztd�|���|dk r�td�|���d S )N�b�modez$file should be opened in binary modez+only SOCK_STREAM type sockets are supportedz+count must be a positive integer (got {!r})r z0offset must be a non-negative integer (got {!r})) r r% r> r$ r1 r r4 r5 �formatr; r r r r2 o s2 �� ����z$BaseEventLoop._check_sendfile_paramsc � s@ g }|� |� |\}}}}} d} z�tj|||d�} | �d� |dk r�|D ]r\}}}}} z| �| � W q�W qH tk r� } z0d| �d| j�� � �} t| j| �} |� | � W 5 d} ~ X Y qHX qH|�� �| � | | �I dH | W S tk �r } z"|� | � | dk �r | � � � W 5 d} ~ X Y n | dk �r4| � � � Y nX dS )z$Create, bind and connect one socket.N�r= r> r? Fz*error while attempting to bind on address �: ) r9 r$ � setblocking�bindr( �strerror�lower�errno�pop� sock_connectr� )rf r Z addr_infoZlocal_addr_infosZ my_exceptionsr= Ztype_r? �_r� r* ZladdrrW r* r r r � _connect_sock� s: � zBaseEventLoop._connect_sock) �sslr= r? r) r* � local_addrr� r� �happy_eyeballs_delay� interleavec � sl | dk r|st d��| dkr0|r0|s,t d��|} | dk rD|sDt d��| dk rX| dkrXd} |dk sj|dk �r�|dk rzt d���j||f|tj||�d�I dH }|s�td��| dk r܈j| |tj||�d�I dH ��s�td��nd�| r�t|| �}g � | dk�rH|D ]D}z ��� |��I dH }W �qvW n tk �r@ Y �q Y nX �q n.tj� ��fd d �|D �| �d �I dH \}}}|dk�r d d � � D �� t � �dk�r�� d �nJt � d ��t �fdd �� D ���r҈ d �td� d� dd � � D �����n.|dk�rt d��|jtjk�r t d|�����j|||| | d�I dH \}}�j�rd|�d�}t�d|||||� ||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 host�1ssl_handshake_timeout is only meaningful with sslr �8host/port and sock can not be specified at the same time�r= r> r? r) r� �!getaddrinfo() returned empty listc 3 s | ]}t ��j� |��V qd S rB )� functools�partialrS )rC r, )r � laddr_infosrf r r rE � s � �z2BaseEventLoop.create_connection.<locals>.<genexpr>r� c S s g | ]}|D ]}|�q qS r r )rC �subrW r r r r� � s z3BaseEventLoop.create_connection.<locals>.<listcomp>r c 3 s | ]}t |�� kV qd S rB �r �rC rW )�modelr r rE s zMultiple exceptions: {}r% c s s | ]}t |�V qd S rB r` ra r r r rE 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% �_ensure_resolvedr$ r1 r( rP rS r Zstaggered_racer� r �allrH r& r> � _create_connection_transportr� �get_extra_infor r )rf r� r; r< rT r= r? r) r* rU r� r� rV rW �infosr, rR rn r� r )r r^ rb rf r �create_connection� s� �� � � � � � � �� � �z BaseEventLoop.create_connectionc � s� |� d� |� }| �� }|rHt|t�r*d n|} | j||| ||||d�} n| �|||�} z|I d H W n | �� � Y nX | |fS )NF�r� r� r� )rK rd r �boolr� r� r� ) rf r* r� rT r� r� r� r� r� r� rn r r r rf % s* �z*BaseEventLoop._create_connection_transportc � s� |� � rtd��t|dtjj�}|tjjkr:td|����|tjjkr�z| �||||�I dH W S tj k r� } z |sx� W 5 d}~X Y nX |s�td|����| � ||||�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 ) ri rm r r Z _SendfileModeZ UNSUPPORTEDZ TRY_NATIVE�_sendfile_nativer r4 �_sendfile_fallback)rf rn r6 r7 r8 r1 rG rW r r r �sendfile? s4 � � � � �zBaseEventLoop.sendfilec � s t �d��d S )Nz!sendfile syscall is not supportedr: )rf rg r6 r7 r8 r r r rl n s �z BaseEventLoop._sendfile_nativec � s� |r|� |� |r t|d�nd}t|�}d}t|�}z�|rXt|| |�}|dkrX|W �bS t|�d |� } | �d |j| �I d H } | s�|W �0S |� � I d H |� | d | � � || 7 }q6W 5 |dkr�t|d�r�|� || � |�� I d H X d S )Ni @ r r< ) r< r= r> r\ r# r{ r? r r@ rk �write) rf rg r6 r7 r8 rA rB rC r? rD rE r r r rm r s* z BaseEventLoop._sendfile_fallbackrj c � s� t dkrtd��t|t j�s*td|����t|dd�sFtd|�d���| �� }tj| ||||||dd�}|� � |� |� | � |j |�} | � |j �} z|I dH W n. tk r� |�� | �� | �� � Y nX |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� )rT rm r Z SSLContextr5 r rd r Z SSLProtocolra rb r ro ry � BaseExceptionr� rz Z_app_transport) rf rn r� r� r� r� r� r� Z ssl_protocolZ conmade_cbZ resume_cbr r r � start_tls� sB � � � zBaseEventLoop.start_tls)r= r? r) � reuse_address� reuse_port�allow_broadcastr* c � s | dk r�| j tjkr"td| ����� s>�s>|s>|s>|s>|s>| r~t� �|||||| d�} d�dd� | �� D ��} td| � d���| �d � d} �n� s��s�|d kr�td ��||fd ff}�n�ttd ��r�|tj k�r�� �fD ] }|dk r�t |t �s�t d��qڈ �rx� d dk�rxz"t �t� � �j��r.t�� � W nF tk �rF Y n2 tk �rv } zt�d� |� W 5 d}~X Y nX ||f� �fff}n�i }d � fd�ffD ]�\}}|dk �r�t |t��r�t|�dk�s�td��| j||tj||| d�I dH }|�s td��|D ]:\}}}}}||f}||k�r0ddg||< ||| |< �q�q�� �fdd�|�� D �}|�sjtd��g }|tk �r�|�r�td��ntj dt dd� |D ]�\\}}\}}d} d} zxtj|tj|d �} |�r�t | � | �r�| � tj tj!d� | �d � � �r| �"|� ��r*| �s&| �#| |�I dH |} W n^ tk �rl } z | dk �rR| �$� |�%| � W 5 d} ~ X Y n& | dk �r�| �$� � Y nX �q��q�|d �|� } | �&� } | �'| | | | �} | j(�r� �r�t�)d � �| | � nt�*d �| | � z| I dH W n | �$� � Y nX | | fS ) zCreate datagram connection.Nz A UDP Socket was expected, got )rU � remote_addrr= r? r) rr rs rt r% c s s$ | ] \}}|r|� d |� �V qdS )�=Nr )rC �k�vr r r rE � s z9BaseEventLoop.create_datagram_endpoint.<locals>.<genexpr>zKsocket modifier keyword arguments can not be used when sock is specified. (�)Fr zunexpected address family)NN�AF_UNIXzstring is expected)r � z2Unable to check or remove stale UNIX socket %r: %rr r! z2-tuple is expectedrZ r[ c s8 g | ]0\}}� r |d dks�r,|d dks||f�qS )r Nr r )rC �keyZ addr_pair�rU ru 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.)� stacklevelrI z@Datagram endpoint local_addr=%r remote_addr=%r created: (%r, %r)z2Datagram endpoint remote_addr=%r created: (%r, %r))+r> r$ r2 r% �dictr& �itemsrK r# rz r r r5 �stat�S_ISSOCK�os�st_mode�remove�FileNotFoundErrorr( r �errorr� r� r� rd �_unsetr� r� r" r+ r& r' Z SO_BROADCASTrL rQ r� r9 rd r� r� r( r ) rf r� rU ru r= r? r) rr rs rt r* ZoptsZproblemsZr_addrZaddr_pairs_inforO �errZ addr_infos�idxrh ZfamrR Zpror� r| r Z local_addressZremote_addressrW r� r� rn r r} r �create_datagram_endpoint� s* ������ � � �� � � � �� � � � � �z&BaseEventLoop.create_datagram_endpointc � s\ |d d� \}}t |||||f|dd � �� } | d k r<| gS |j||||||d�I d H S d S )Nr! r/ )rA r' ) rf r� r= r> r? r) r� r; r< r( r r r rd L s �z BaseEventLoop._ensure_resolvedc � s8 | j ||f|tj|| d�I d H }|s4td|�d���|S )N)r= r> r) r� z getaddrinfo(z) returned empty list)rd r$ r1 r( )rf r; r< r= r) rh r r r �_create_server_getaddrinfoX s � z(BaseEventLoop._create_server_getaddrinfor ) r= r) r* r� rT rr rs r� r� c � s� t |t�rtd��| dk r*|dkr*td��|dk s<�dk �r"|dk rLtd��| dkrhtjdkoftjdk} g } |dkr|dg}n$t |t�s�t |t j j �s�|g}n|}� ���fdd �|D �}t j |d �i�I dH }ttj�|��}d }�z |D �]}|\}}}}}zt�|||�}W n8 tjk �rH �j�r@tjd |||d d� Y q�Y nX | �|� | �rl|�tjtjd � | �rzt |� t �r�|tj k�r�t td��r�|�tj tj!d � z|�"|� W q� t#k �r� } z t#|j$d||j%�&� f �d�W 5 d}~X Y q�X q�d }W 5 |�s | D ]}|�� �qX n4|dk�r4td��|j'tj(k�rPtd|����|g} | D ]}|�)d � �qZt*�| |||| �}| �r�|�+� t j,d�d�I dH �j�r�t�-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 NoneNrX rY �posix�cygwinr. c s g | ]}�j |�� �d ��qS ))r= r) )r� )rC r; �r= r) r< rf r r r� � s � �z/BaseEventLoop.create_server.<locals>.<listcomp>r� Fz:create_server() failed to create socket.socket(%r, %r, %r)T��exc_info� IPPROTO_IPV6z0error while attempting to bind on address %r: %sz)Neither host/port nor sock were specifiedrc r r� z %r is serving).r rk r5 r% r� r� r �platformr rF �abc�Iterabler r� �setrK rL rM r� r$ r� r� r �warningr9 r& r' Z SO_REUSEADDRr+ r8 r r# r� Z IPV6_V6ONLYrL r( rO rM rN r> r1 rK r r� r� r( )rf r� r; r< r= r) r* r� rT rr rs r� r� r� ZhostsZfsrh Z completed�resr@ Zsocktyper? Z canonnameZsar� r� r r� r � create_server` s� �� �� � ���� �� � zBaseEventLoop.create_server)rT r� c � sv |j tjkrtd|����|dk r.|s.td��| j|||dd|d�I dH \}}| jrn|�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. rc NrX r. T)r� r� r$ z%r handled: (%r, %r)) r> r$ r1 r% rf r� rg r r )rf r� r* rT r� rn r� r r r �connect_accepted_socket� s$ � � z%BaseEventLoop.connect_accepted_socketc � sd |� }| � � }| �|||�}z|I d H W n |�� � Y nX | jr\t�d|�� ||� ||fS )Nz Read pipe %r connected: (%r, %r))rd r� r� r� r r �fileno�rf r� r� r� r� rn r r r �connect_read_pipe� s �z BaseEventLoop.connect_read_pipec � sd |� }| � � }| �|||�}z|I d H W n |�� � Y nX | jr\t�d|�� ||� ||fS )Nz!Write pipe %r connected: (%r, %r))rd r� r� r� r r r� r� r r r �connect_write_pipe s �z BaseEventLoop.connect_write_pipec C s� |g}|d k r"|� dt|�� �� |d k rJ|tjkrJ|� dt|�� �� n8|d k rf|� dt|�� �� |d k r�|� dt|�� �� t�d�|�� d S )Nzstdin=zstdout=stderr=zstdout=zstderr=� )r9 r! r r r r r& )rf r* r� r� r� r( r r r �_log_subprocess s z BaseEventLoop._log_subprocess) r� r� r� �universal_newlinesr� r� �encoding�errors�textc � s� t |ttf�std��|r"td��|s.td��|dkr>td��| rJtd��| d k rZtd��| d k rjtd��|� } d }| jr�d | }| �||||� | j| |d ||||f| �I d H }| jr�|d k r�t�d ||� || fS ) Nzcmd must be a string� universal_newlines must be Falsezshell must be Truer �bufsize must be 0�text must be False�encoding must be None�errors must be Nonezrun shell command %rT�%s: %r) r r3 r r% r� r� r� r r( )rf r� �cmdr� r� r� r� r� r� r� r� r� r� r� � debug_logrn r r r �subprocess_shell sB �� z BaseEventLoop.subprocess_shellc � s� |r t d��|rt d��|dkr(t d��| r4t d��| d k rDt d��| d k rTt d��|f| }|� }d }| jr�d|��}| �||||� | j||d ||||f| �I d H }| jr�|d k r�t�d ||� ||fS ) Nr� zshell must be Falser r� r� r� r� zexecute program Fr� )r% r� r� r� r r( )rf r� Zprogramr� r� r� r� r� r� r� r� r� r� r� Z popen_argsr� r� rn r r r �subprocess_execC s@ �� z BaseEventLoop.subprocess_execc C s | j S )zKReturn an exception handler, or None if the default one is in use. )r� rq r r r �get_exception_handlere s z#BaseEventLoop.get_exception_handlerc C s( |dk r 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� r5 r� )rf Zhandlerr r r �set_exception_handlerj s z#BaseEventLoop.set_exception_handlerc C s |� d�}|sd}|� d�}|dk r6t|�||jf}nd}d|kr`| jdk r`| jjr`| jj|d< |g}t|�D ]�}|dkr|qn|| }|dkr�d �t�|��}d }||� � 7 }n2|dkr�d �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 looprR NFZsource_tracebackZhandle_traceback> r� rR r. z+Object created at (most recent call last): z+Handle created at (most recent call last): rJ � r� )�getr> � __traceback__r� r� �sortedr& � traceback� format_list�rstripr r9 r r� ) rf r r� rR r� Z log_linesr| �value�tbr r r �default_exception_handler{ s< ��� z'BaseEventLoop.default_exception_handlerc C s� | j dkrVz| �|� W q� ttfk r2 � Y q� tk rR tjddd� Y q�X n�z| � | |� W n� ttfk r� � Y nt tk r� } zVz| �d||d�� W n: ttfk r� � Y n" tk r� tjddd� Y nX W 5 d}~X Y nX 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$Unhandled error in exception handler)r� rR r zeException in default exception handler while handling an unexpected error in custom exception handler)r� r� rS rT rp r r� )rf r rW r r r r� � s4 �� �z$BaseEventLoop.call_exception_handlerc C s> t |tj�std��|jr dS t |tj�r.t�| j�|� dS )z3Add a Handle to _scheduled (TimerHandle) or _ready.zA Handle is required hereN)r r r r� � _cancelledr r� r9 �rf 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 r�d}n*| jr�| jd j }t td|| �� �t�}| j�|�}| �|� | �� | j }| j�r:| jd }|j |k�r�q:t� | j�}d|_| j �|� q�t | j �}t|�D ]|} | j �� }|j�rf�qL| j�r�zD|| _| �� } |�� | �� | } | | jk�r�t� dt |�| � W 5 d| _X n|�� �qLd}dS )z�Run 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� r9 r �heapify�heappopr� r� Z_whenr= �maxr� �MAXIMUM_SELECT_TIMEOUTZ _selectorZselectr� r� �range�popleftr� r� Z_runr� r r� r ) rf Z sched_countZ new_scheduledr Ztimeoutr r� Zend_timeZntodo�ir+ r- r r r r � sj �� � zBaseEventLoop._run_oncec C sH t |�t | j�krd S |r2t�� | _t�tj� n t�| j� || _d S rB )rk r� r �#get_coroutine_origin_tracking_depthr� �#set_coroutine_origin_tracking_depthr ZDEBUG_STACK_DEPTH�rf Zenabledr r r r� F s ���z,BaseEventLoop._set_coroutine_origin_trackingc C s | j S rB )r� rq r r r r� U s zBaseEventLoop.get_debugc C s || _ | �� r | �| j|� d S rB )r� r� r� r� r� r r r r� X s zBaseEventLoop.set_debug)N)N)NNN)NN)NN)N)r )r N)N)NN)FN)r N)NN)NN)Sr| r} r~ rh r� rd r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r rU r� r� r� r� r r� r� r r r r r r r� r r# r. r' r0 r9 r3 r5 r2 rS ri rf rn rl rm rq r� r� r$ r1 rd r� r6 Z 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 � sF � � � � � � � & � � % � � � � /� / � � � �� w� � % � "29Nr )r r )r )7�__doc__rF Zcollections.abcZconcurrent.futuresr r\ r rK r� r$ r� r r r� r� r r� r� rT � ImportErrorr. r r r r r r r r r r r �logr �__all__r� r� r# r8 r� �objectr� r r! r+ rA rP rX r[ ZProtocolr\ ZAbstractServerr ZAbstractEventLoopr r r r r �<module> sd ; Do
Save File
Cancel