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✏️ selector_events.cpython-37.pyc
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For a subclass which also includes support for signal handling, see the unix_events sub-module. )�BaseSelectorEventLoop� N� )� base_events)� constants)�events)�futures)� protocols)�sslproto)� transports)�loggerc C s6 y| � |�}W n tk r" dS X t|j|@ �S d S )NF)�get_key�KeyError�boolr )�selector�fdZevent�key� r �</opt/alt/python37/lib64/python3.7/asyncio/selector_events.py�_test_selector_event s r c C s t d k r t| t j�r td��d S )Nz"Socket cannot be of type SSLSocket)�ssl� isinstanceZ SSLSocket� TypeError)�sockr r r �_check_ssl_socket* s r c s� e Zd ZdZdQ� fdd� ZdRddd�dd�ZdSddddejd �d d �ZdTd d �Z � fdd�Z dd� Z dd� Z dd� Z dd� Zdd� Zdddejfdd �Zdddejfd d �Zddejfd d �Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Z d5d6� Z d7d8� Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dEdF� Z%dGdH� Z&dIdJ� Z'dKdL� Z(dMdN� Z)dOdP� Z*� Z+S )Ur zJSelector event loop. See events.EventLoop for API specification. Nc sF t � �� |d krt�� }t�d|jj� || _| � � t � � | _ d S )NzUsing selector: %s) �super�__init__� selectorsZDefaultSelectorr �debug� __class__�__name__� _selector�_make_self_pipe�weakrefZWeakValueDictionary� _transports)�selfr )r r r r 5 s z BaseSelectorEventLoop.__init__)�extra�serverc C s t | |||||�S )N)�_SelectorSocketTransport)r$ r �protocol�waiterr% r& r r r �_make_socket_transport? s z,BaseSelectorEventLoop._make_socket_transportF)� server_side�server_hostnamer% r& �ssl_handshake_timeoutc C s0 t j| |||||| d�} t| || ||d� | jS )N)r- )r% r& )r Z SSLProtocolr' Z_app_transport) r$ Zrawsockr( � sslcontextr) r+ r, r% r& r- Z ssl_protocolr r r �_make_ssl_transportD s z)BaseSelectorEventLoop._make_ssl_transportc C s t | |||||�S )N)�_SelectorDatagramTransport)r$ r r( �addressr) r% r r r �_make_datagram_transportQ s z.BaseSelectorEventLoop._make_datagram_transportc sL | � � rtd��| �� r d S | �� t� �� | jd k rH| j�� d | _d S )Nz!Cannot close a running event loop)Z is_running� RuntimeError� is_closed�_close_self_piper �closer )r$ )r r r r6 V s zBaseSelectorEventLoop.closec C sB | � | j�� � | j�� d | _| j�� d | _| jd8 _d S )Nr )�_remove_reader�_ssock�filenor6 �_csock� _internal_fds)r$ r r r r5 a s z&BaseSelectorEventLoop._close_self_pipec C sN t �� \| _| _| j�d� | j�d� | jd7 _| �| j�� | j� d S )NFr ) �socketZ socketpairr8 r: � setblockingr; � _add_readerr9 �_read_from_self)r$ r r r r! i s z%BaseSelectorEventLoop._make_self_pipec C s d S )Nr )r$ �datar r r �_process_self_dataq s z(BaseSelectorEventLoop._process_self_datac C sV xPy | j �d�}|sP | �|� W q tk r8 wY q tk rL P Y qX qW d S )Ni )r8 �recvrA �InterruptedError�BlockingIOError)r$ r@ r r r r? t s z%BaseSelectorEventLoop._read_from_selfc C sJ | j }|d k rFy|�d� W n( tk rD | jr@tjddd� Y nX d S )N� z3Fail to write a null byte into the self-pipe socketT)�exc_info)r: �send�OSError�_debugr r )r$ Zcsockr r r �_write_to_self� s z$BaseSelectorEventLoop._write_to_self�d c C s" | � |�� | j||||||� d S )N)r> r9 �_accept_connection)r$ �protocol_factoryr r. r& �backlogr- r r r �_start_serving� s z$BaseSelectorEventLoop._start_servingc C s � x�t |�D ]�}y0|�� \}} | jr4t�d|| |� |�d� W n� tttfk rZ d S t k r� } z^| j t j t j t j t jfkr�| �d| |d�� | �|�� � | �tj| j||||||� n� W d d } ~ X Y q X d| i} | �||| |||�} | �| � q W d S )Nz#%r got a new connection from %r: %rFz&socket.accept() out of system resource)�message� exceptionr< �peername)�range�acceptrI r r r= rD rC �ConnectionAbortedErrorrH �errnoZEMFILEZENFILEZENOBUFSZENOMEM�call_exception_handlerr7 r9 Z call_laterr ZACCEPT_RETRY_DELAYrO �_accept_connection2Z create_task) r$ rM r r. r& rN r- �_�conn�addr�excr% rT r r r rL � s6 z(BaseSelectorEventLoop._accept_connectionc � s� d }d }yl|� }| � � } |r8| j|||| d|||d�}n| j||| ||d�}y| I d H W n |�� � Y nX W n\ tk r� } z>| jr�d| d�} |d k r�|| d< |d k r�|| d< | �| � W d d } ~ X Y nX d S )NT)r) r+ r% r& r- )r) r% r& z3Error on transport creation for incoming connection)rP rQ r( � transport)� create_futurer/ r* r6 � ExceptionrI rW ) r$ rM rZ r% r. r& r- r( r] r) r\ �contextr r r rX � s6 z)BaseSelectorEventLoop._accept_connection2c C s� |}t |t�sJyt|�� �}W n* tttfk rH td|���d �Y nX y| j| }W n tk rl Y n X |�� s�t d|�d|����d S )NzInvalid file object: zFile descriptor z is used by transport ) r �intr9 �AttributeErrorr � ValueErrorr# r � is_closingr3 )r$ r r9 r] r r r �_ensure_fd_no_transport� s z-BaseSelectorEventLoop._ensure_fd_no_transportc G s� | � � t�||| d �}y| j�|�}W n* tk rR | j�|tj|d f� Y n>X |j|j }\}}| j� ||tjB ||f� |d k r�|� � d S )N) � _check_closedr �Handler r r �registerr � EVENT_READr@ �modify�cancel) r$ r �callback�args�handler �mask�reader�writerr r r r> � s z!BaseSelectorEventLoop._add_readerc C s� | � � r dS y| j�|�}W n tk r0 dS X |j|j }\}}|tj M }|sb| j�|� n| j� ||d |f� |d k r�|� � dS dS d S )NFT) r4 r r r r r@ r ri � unregisterrj rk )r$ r r ro rp rq r r r r7 s z$BaseSelectorEventLoop._remove_readerc G s� | � � t�||| d �}y| j�|�}W n* tk rR | j�|tjd |f� Y n>X |j|j }\}}| j� ||tjB ||f� |d k r�|� � d S )N) rf r rg r r r rh r � EVENT_WRITEr@ rj rk ) r$ r rl rm rn r ro rp rq r r r � _add_writer s z!BaseSelectorEventLoop._add_writerc C s� | � � r dS y| j�|�}W n tk r0 dS X |j|j }\}}|tj M }|sb| j�|� n| j� |||df� |dk r�|� � dS dS dS )zRemove a writer callback.FNT) r4 r r r r r@ r rs rr rj rk )r$ r r ro rp rq r r r �_remove_writer/ s z$BaseSelectorEventLoop._remove_writerc G s | � |� | j||f|�� S )zAdd a reader callback.)re r> )r$ r rl rm r r r � add_readerF s z BaseSelectorEventLoop.add_readerc C s | � |� | �|�S )zRemove a reader callback.)re r7 )r$ r r r r � remove_readerK s z#BaseSelectorEventLoop.remove_readerc G s | � |� | j||f|�� S )zAdd a writer callback..)re rt )r$ r rl rm r r r � add_writerP s z BaseSelectorEventLoop.add_writerc C s | � |� | �|�S )zRemove a writer callback.)re ru )r$ r r r r � remove_writerU s z#BaseSelectorEventLoop.remove_writerc � sD t |� | jr"|�� dkr"td��| �� }| �|d||� |I dH S )z�Receive data from the socket. The return value is a bytes object representing the data received. The maximum amount of data to be received at once is specified by nbytes. r z the socket must be non-blockingN)r rI � gettimeoutrc r^ � _sock_recv)r$ r �n�futr r r � sock_recvZ s z BaseSelectorEventLoop.sock_recvc C s� |d k r| � |� |�� r d S y|�|�}W n` ttfk rb |�� }| �|| j||||� Y n6 tk r� } z|� |� W d d }~X Y n X |� |� d S )N) rw � cancelledrB rD rC r9 rv r{ r_ � set_exception� set_result)r$ r} � registered_fdr r| r@ r r\ r r r r{ h s z BaseSelectorEventLoop._sock_recvc � sD t |� | jr"|�� dkr"td��| �� }| �|d||� |I dH S )z�Receive data from the socket. The received data is written into *buf* (a writable buffer). The return value is the number of bytes written. r z the socket must be non-blockingN)r rI rz rc r^ �_sock_recv_into)r$ r �bufr} r r r �sock_recv_into} s z$BaseSelectorEventLoop.sock_recv_intoc C s� |d k r| � |� |�� r d S y|�|�}W n` ttfk rb |�� }| �|| j||||� Y n6 tk r� } z|� |� W d d }~X Y n X |� |� d S )N) rw r � recv_intorD rC r9 rv r� r_ r� r� )r$ r} r� r r� �nbytesr r\ r r r r� � s z%BaseSelectorEventLoop._sock_recv_intoc � sT t |� | jr"|�� dkr"td��| �� }|r@| �|d||� n |�d� |I dH S )a� Send data to the socket. The socket must be connected to a remote socket. This method continues to send data from data until either all data has been sent or an error occurs. None is returned on success. On error, an exception is raised, and there is no way to determine how much data, if any, was successfully processed by the receiving end of the connection. r z the socket must be non-blockingN)r rI rz rc r^ � _sock_sendallr� )r$ r r@ r} r r r � sock_sendall� s z"BaseSelectorEventLoop.sock_sendallc C s� |d k r| � |� |�� r d S y|�|�}W nF ttfk rH d}Y n, tk rr } z|�|� d S d }~X Y nX |t|�kr�|�d � n.|r�||d � }|� � }| � || j ||||� d S )Nr ) ry r rG rD rC r_ r� �lenr� r9 rx r� )r$ r} r� r r@ r| r\ r r r r r� � s" z#BaseSelectorEventLoop._sock_sendallc � s� t |� | jr"|�� dkr"td��ttd�r8|jtjkrf| j||j|j | d�I dH }|d \}}}}}| � � }| � |||� |I dH S )zTConnect to a remote socket at address. This method is a coroutine. r z the socket must be non-blocking�AF_UNIX)�family�proto�loopN) r rI rz rc �hasattrr< r� r� Z_ensure_resolvedr� r^ � _sock_connect)r$ r r1 ZresolvedrY r} r r r � sock_connect� s z"BaseSelectorEventLoop.sock_connectc C s� |� � }y|�|� W nj ttfk rV |�t�| j|�� | �|| j |||� Y n6 t k r� } z|� |� W d d }~X Y n X |� d � d S )N) r9 ZconnectrD rC Zadd_done_callback� functools�partial�_sock_connect_donerx �_sock_connect_cbr_ r� r� )r$ r} r r1 r r\ r r r r� � s z#BaseSelectorEventLoop._sock_connectc C s | � |� d S )N)ry )r$ r r} r r r r� � s z(BaseSelectorEventLoop._sock_connect_donec C s� |� � r d S y,|�tjtj�}|dkr6t|d|� ���W nB ttfk rP Y n6 tk rz } z|� |� W d d }~X Y n X |� d � d S )Nr zConnect call failed ) r Z getsockoptr< Z SOL_SOCKETZSO_ERRORrH rD rC r_ r� r� )r$ r} r r1 �errr\ r r r r� � s z&BaseSelectorEventLoop._sock_connect_cbc � sB t |� | jr"|�� dkr"td��| �� }| �|d|� |I dH S )aW Accept a connection. The socket must be bound to an address and listening for connections. The return value is a pair (conn, address) where conn is a new socket object usable to send and receive data on the connection, and address is the address bound to the socket on the other end of the connection. r z the socket must be non-blockingFN)r rI rz rc r^ � _sock_accept)r$ r r} r r r � sock_accept s z!BaseSelectorEventLoop.sock_acceptc C s� |� � }|r| �|� |�� r"d S y|�� \}}|�d� W nV ttfk rh | �|| j|d|� Y n: t k r� } z|� |� W d d }~X Y nX |� ||f� d S )NFT) r9 rw r rT r= rD rC rv r� r_ r� r� )r$ r} Z registeredr r rZ r1 r\ r r r r� s z"BaseSelectorEventLoop._sock_acceptc � sl | j |j= |�� }|�� |�� I d H z | j|j|||dd�I d H S |�� |rZ|�� || j |j< X d S )NF)Zfallback) r# �_sock_fd� is_reading� pause_reading�_make_empty_waiterZ sock_sendfile�_sock�_reset_empty_waiter�resume_reading)r$ Ztransp�file�offset�countr� r r r �_sendfile_native s z&BaseSelectorEventLoop._sendfile_nativec C s� x~|D ]v\}}|j |j }\}}|tj@ rN|d k rN|jrD| �|� n | �|� |tj@ r|d k r|jrr| �|� q| �|� qW d S )N) �fileobjr@ r ri Z _cancelledr7 Z _add_callbackrs ru )r$ Z event_listr ro r� rp rq r r r �_process_events- s z%BaseSelectorEventLoop._process_eventsc C s | � |�� � |�� d S )N)r7 r9 r6 )r$ r r r r � _stop_serving; s z#BaseSelectorEventLoop._stop_serving)N)N)N)NNN),r � __module__� __qualname__�__doc__r r* r ZSSL_HANDSHAKE_TIMEOUTr/ r2 r6 r5 r! rA r? rJ rO rL rX re r> r7 rt ru rv rw rx ry r~ r{ r� r� r� r� r� r� r� r� r� r� r� r� r� � __classcell__r r )r r r / sZ +$ r c s� e Zd ZdZeZdZd � fdd� Zdd� Zdd� Z d d � Z d d � Z d d� Z dd� Z dd� Zd dd�Zdd� Zdd� Zdd� Zd d � Z� ZS ) �_SelectorTransporti Nc s� t � �||� || jd< y|�� | jd< W n tk rH d | jd< Y nX d| jkr�y|�� | jd< W n tjk r� d | jd< Y nX || _|� � | _ d| _ | � |� || _ | �� | _d| _d| _| j d k r�| j �� | |j| j < d S )Nr< ZsocknamerR Fr )r r �_extraZ getsocknamerH Z getpeernamer< �errorr� r9 r� �_protocol_connected� set_protocol�_server�_buffer_factory�_buffer� _conn_lost�_closingZ_attachr# )r$ r� r r( r% r& )r r r r L s, z_SelectorTransport.__init__c C s� | j jg}| jd kr |�d� n| jr0|�d� |�d| j� �� | jd k r�| j�� s�t| jj | jt j �}|rz|�d� n |�d� t| jj | jt j �}|r�d}nd}| � � }|�d|� d |� d �� d �d �|��S ) N�closed�closingzfd=z read=pollingz read=idle�pollingZidlezwrite=<z , bufsize=�>z<{}>� )r r r� �appendr� r� �_loopr4 r r r ri rs �get_write_buffer_size�format�join)r$ �infor� �state�bufsizer r r �__repr__f s* z_SelectorTransport.__repr__c C s | � d � d S )N)� _force_close)r$ r r r �abort� s z_SelectorTransport.abortc C s || _ d| _d S )NT)� _protocolr� )r$ r( r r r r� � s z _SelectorTransport.set_protocolc C s | j S )N)r� )r$ r r r � get_protocol� s z _SelectorTransport.get_protocolc C s | j S )N)r� )r$ r r r rd � s z _SelectorTransport.is_closingc C sT | j r d S d| _ | j�| j� | jsP| jd7 _| j�| j� | j�| jd � d S )NTr ) r� r� r7 r� r� r� ru � call_soon�_call_connection_lost)r$ r r r r6 � s z_SelectorTransport.closec C s. | j d k r*tjd| ��t| d� | j �� d S )Nzunclosed transport )�source)r� �warnings�warn�ResourceWarningr6 )r$ r r r �__del__� s z_SelectorTransport.__del__�Fatal error on transportc C sN t |t�r(| j�� r@tjd| |dd� n| j�||| | jd�� | �|� d S )Nz%r: %sT)rF )rP rQ r] r( ) r rH r� � get_debugr r rW r� r� )r$ r\ rP r r r � _fatal_error� s z _SelectorTransport._fatal_errorc C sd | j r d S | jr(| j�� | j�| j� | jsBd| _| j�| j� | j d7 _ | j�| j |� d S )NTr ) r� r� �clearr� ru r� r� r7 r� r� )r$ r\ r r r r� � s z _SelectorTransport._force_closec C sV z| j r| j�|� W d | j�� d | _d | _d | _| j}|d k rP|�� d | _X d S )N)r� r� Zconnection_lostr� r6 r� r� Z_detach)r$ r\ r& r r r r� � s z(_SelectorTransport._call_connection_lostc C s t | j�S )N)r� r� )r$ r r r r� � s z(_SelectorTransport.get_write_buffer_sizec G s" | j r d S | jj||f|�� d S )N)r� r� r> )r$ r rl rm r r r r> � s z _SelectorTransport._add_reader)NN)r� )r r� r� �max_size� bytearrayr� r� r r� r� r� r� rd r6 r� r� r� r� r� r> r� r r )r r r� @ s r� c s� e Zd ZdZejjZd#� fdd� Z� fdd�Z dd� Z d d � Z d d � Z d d� Z dd� Zdd� Zdd� Zdd� Zdd� Zdd� Zdd � Z� fd d �Zd d � Zd!d"� Z� ZS )$r' TNc s~ d | _ t� �|||||� d| _d| _d | _t�| j� | j � | j j | � | j � | j | j| j� |d k rz| j � tj|d � d S )NF)�_read_ready_cbr r �_eof�_paused� _empty_waiterr Z _set_nodelayr� r� r� r� �connection_mader> r� � _read_readyr � _set_result_unless_cancelled)r$ r� r r( r) r% r& )r r r r � s z!_SelectorSocketTransport.__init__c s. t |tj�r| j| _n| j| _t� �|� d S )N)r r ZBufferedProtocol�_read_ready__get_bufferr� �_read_ready__data_receivedr r� )r$ r( )r r r r� � s z%_SelectorSocketTransport.set_protocolc C s | j o| j S )N)r� r� )r$ r r r r� � s z#_SelectorSocketTransport.is_readingc C s> | j s | jrd S d| _| j�| j� | j�� r:t�d| � d S )NTz%r pauses reading)r� r� r� r7 r� r� r r )r$ r r r r� � s z&_SelectorSocketTransport.pause_readingc C s@ | j s | jsd S d| _| �| j| j� | j�� r<t�d| � d S )NFz%r resumes reading) r� r� r> r� r� r� r� r r )r$ r r r r� s z'_SelectorSocketTransport.resume_readingc C s | � � d S )N)r� )r$ r r r r� s z$_SelectorSocketTransport._read_readyc C s | j r d S y | j�d�}t|�s(td��W n. tk rX } z| �|d� d S d }~X Y nX y| j�|�}W nD t t fk r� d S tk r� } z| �|d� d S d }~X Y nX |s�| � � d S y| j� |� W n0 tk �r } z| �|d� W d d }~X Y nX d S )N���z%get_buffer() returned an empty bufferz/Fatal error: protocol.get_buffer() call failed.z$Fatal read error on socket transportz3Fatal error: protocol.buffer_updated() call failed.) r� r� Z get_bufferr� r3 r_ r� r� r� rD rC �_read_ready__on_eofZbuffer_updated)r$ r� r\ r� r r r r� s2 z0_SelectorSocketTransport._read_ready__get_bufferc C s� | j r d S y| j�| j�}W nD ttfk r4 d S tk r` } z| �|d� d S d }~X Y nX |sr| �� d S y| j � |� W n. tk r� } z| �|d� W d d }~X Y nX d S )Nz$Fatal read error on socket transportz2Fatal error: protocol.data_received() call failed.) r� r� rB r� rD rC r_ r� r� r� Z data_received)r$ r@ r\ r r r r� * s" z3_SelectorSocketTransport._read_ready__data_receivedc C st | j �� rt�d| � y| j�� }W n. tk rR } z| �|d� d S d }~X Y nX |rh| j �| j � n| � � d S )Nz%r received EOFz1Fatal error: protocol.eof_received() call failed.) r� r� r r r� Z eof_receivedr_ r� r7 r� r6 )r$ Z keep_openr\ r r r r� ? s z,_SelectorSocketTransport._read_ready__on_eofc C s t |tttf�s$tdt|�j����| jr2td��| j d k rDtd��|sLd S | j rz| j t j krht �d� | j d7 _ d S | j� s�y| j�|�}W nD ttfk r� Y nB tk r� } z| �|d� d S d }~X Y nX ||d � }|s�d S | j�| j| j� | j�|� | �� d S )Nz/data argument must be a bytes-like object, not z%Cannot call write() after write_eof()z(unable to write; sendfile is in progressz socket.send() raised exception.r z%Fatal write error on socket transport) r �bytesr� � memoryviewr �typer r� r3 r� r� r �!LOG_THRESHOLD_FOR_CONNLOST_WRITESr �warningr� r� rG rD rC r_ r� r� rt r� � _write_ready�extend�_maybe_pause_protocol)r$ r@ r| r\ r r r �writeR s6 z _SelectorSocketTransport.writec C s | j std��| jrd S y| j�| j �}W nr ttfk rB Y n� tk r� } z>| j� | j � | j � � | � |d� | j d k r�| j �|� W d d }~X Y nnX |r�| j d |�= | �� | j �s | j� | j � | j d k r�| j �d � | jr�| �d � n| j�r | j�tj� d S )NzData should not be emptyz%Fatal write error on socket transport)r� �AssertionErrorr� r� rG rD rC r_ r� ru r� r� r� r� r� �_maybe_resume_protocolr� r� r� r� �shutdownr< �SHUT_WR)r$ r| r\ r r r r� w s0 z%_SelectorSocketTransport._write_readyc C s. | j s | jrd S d| _| js*| j�tj� d S )NT)r� r� r� r� r� r< r� )r$ r r r � write_eof� s z"_SelectorSocketTransport.write_eofc C s dS )NTr )r$ r r r � can_write_eof� s z&_SelectorSocketTransport.can_write_eofc s* t � �|� | jd k r&| j�td�� d S )Nz Connection is closed by peer)r r� r� r� �ConnectionError)r$ r\ )r r r r� � s z._SelectorSocketTransport._call_connection_lostc C s6 | j d k rtd��| j�� | _ | js0| j �d � | j S )NzEmpty waiter is already set)r� r3 r� r^ r� r� )r$ r r r r� � s z+_SelectorSocketTransport._make_empty_waiterc C s d | _ d S )N)r� )r$ r r r r� � s z,_SelectorSocketTransport._reset_empty_waiter)NNN)r r� r� Z_start_tls_compatibler Z _SendfileModeZ TRY_NATIVEZ_sendfile_compatibler r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r )r r r' � s& % r' c sF e Zd ZejZd � fdd� Zdd� Zdd� Zd dd �Z d d � Z � Z S )r0 Nc s^ t � �||||� || _| j�| jj| � | j�| j| j| j � |d k rZ| j�t j |d � d S )N) r r �_addressr� r� r� r� r> r� r� r r� )r$ r� r r( r1 r) r% )r r r r � s z#_SelectorDatagramTransport.__init__c C s t dd� | jD ��S )Nc s s | ]\}}t |�V qd S )N)r� )�.0r@ rY r r r � <genexpr>� s zC_SelectorDatagramTransport.get_write_buffer_size.<locals>.<genexpr>)�sumr� )r$ r r r r� � s z0_SelectorDatagramTransport.get_write_buffer_sizec C s� | j r d S y| j�| j�\}}W np ttfk r8 Y nh tk rd } z| j�|� W d d }~X Y n< t k r� } z| � |d� W d d }~X Y nX | j� ||� d S )Nz&Fatal read error on datagram transport) r� r� Zrecvfromr� rD rC rH r� �error_receivedr_ r� Zdatagram_received)r$ r@ r[ r\ r r r r� � s z&_SelectorDatagramTransport._read_readyc C sd t |tttf�s$tdt|�j����|s,d S | jrV|d | jfkrPtd| j� ���| j}| j r�| jr�| j t j krxt � d� | j d7 _ d S | j�sDy*| jd r�| j�|� n| j�||� d S ttfk r� | j�| j| j� Y n^ tk �r } z| j�|� d S d }~X Y n0 t k �rB } z| � |d� d S d }~X Y nX | j� t|�|f� | � � d S )Nz/data argument must be a bytes-like object, not z!Invalid address: must be None or z socket.send() raised exception.r rR z'Fatal write error on datagram transport) r r� r� r� r r� r r� rc r� r r� r r� r� r� r� rG �sendtorD rC r� rt r� � _sendto_readyrH r� r� r_ r� r� r� )r$ r@ r[ r\ r r r r� � s> z!_SelectorDatagramTransport.sendtoc C s� x�| j r�| j �� \}}y*| jd r0| j�|� n| j�||� W q ttfk rj | j �||f� P Y q t k r� } z| j � |� d S d }~X Y q t k r� } z| � |d� d S d }~X Y qX qW | �� | j s�| j�| j� | jr�| �d � d S )NrR z'Fatal write error on datagram transport)r� �popleftr� r� rG r� rD rC � appendleftrH r� r� r_ r� r� r� ru r� r� r� )r$ r@ r[ r\ r r r r� � s* z(_SelectorDatagramTransport._sendto_ready)NNN)N) r r� r� � collections�dequer� r r� r� r� r� r� r r )r r r0 � s )r0 ) r� �__all__r� rV r� r r< r� r" r � ImportError� r r r r r r r �logr r r Z BaseEventLoopr Z_FlowControlMixinZ Transportr� r' r0 r r r r �<module> sB _
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