관리-도구
편집 파일: selector_events.cpython-39.opt-1.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)�trsock)�loggerc C s6 z| � |�}W n ty" Y dS 0 t|j|@ �S d S �NF)�get_key�KeyError�boolr )�selector�fdZevent�key� r �</opt/alt/python39/lib64/python3.9/asyncio/selector_events.py�_test_selector_event s r c s� e Zd ZdZdS� fdd� ZdTddd�dd�ZdUddddejd �d d �ZdVd d �Z � fdd�Z dd� Z dd� Z dd� Z dd� Zdd� Zdddejfdd �Zdddejfd d �Zddejfd d �Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Z dWd5d6�Z d7d8� Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dXdEdF�Z%dGdH� Z&dIdJ� Z'dKdL� Z(dMdN� Z)dOdP� Z*dQdR� Z+� Z,S )Yr zJSelector event loop. See events.EventLoop for API specification. Nc sF t � �� |d u rt�� }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 1 s z BaseSelectorEventLoop.__init__��extra�serverc C s t | |||||�S �N)�_SelectorSocketTransport)r! �sock�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 Z SSLProtocolr' Z_app_transport) r! Zrawsockr) � sslcontextr* r, r- r$ r% r. Z ssl_protocolr r r �_make_ssl_transport@ s ��z)BaseSelectorEventLoop._make_ssl_transportc C s t | |||||�S r& )�_SelectorDatagramTransport)r! r( r) �addressr* r$ r r r �_make_datagram_transportM s �z.BaseSelectorEventLoop._make_datagram_transportc sL | � � rtd��| �� r d S | �� t� �� | jd urH| 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 r7 R s zBaseSelectorEventLoop.closec C sB | � | j�� � | j�� d | _| j�� d | _| jd8 _d S )Nr )�_remove_reader�_ssock�filenor7 �_csock� _internal_fdsr8 r r r r6 ] s z&BaseSelectorEventLoop._close_self_pipec C sN t �� \| _| _| j�d� | j�d� | jd7 _| �| j�� | j� d S )NFr ) �socketZ socketpairr: r< � setblockingr= � _add_readerr; �_read_from_selfr8 r r r r e s z%BaseSelectorEventLoop._make_self_pipec C s d S r& r �r! �datar r r �_process_self_datam s z(BaseSelectorEventLoop._process_self_datac C sT z"| j �d�}|sW qP| �|� W q ty8 Y q Y q tyL Y qPY q 0 q d S )Ni )r: �recvrD �InterruptedError�BlockingIOErrorrB r r r rA p s z%BaseSelectorEventLoop._read_from_selfc C sL | j }|d u rd S z|�d� W n& tyF | jrBtjddd� Y n0 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$BaseSelectorEventLoop._write_to_self�d c C s" | � |�� | j||||||� d S r& )r@ r; �_accept_connection)r! �protocol_factoryr( r/ r% �backlogr. r r r �_start_serving� s �z$BaseSelectorEventLoop._start_servingc C s t |�D ]�}z0|�� \}} | jr0t�d|| |� |�d� W n� tttfyX Y d S t y� } zl| j t j t j t j t jfv r�| �d| t�|�d�� | �|�� � | �tj| j||||||� n� W Y d } ~ qd } ~ 0 0 d| i} | �||| |||�} | �| � qd S )Nz#%r got a new connection from %r: %rFz&socket.accept() out of system resource)�message� exceptionr> �peername)�range�acceptrM r r r? rG rF �ConnectionAbortedErrorrL �errnoZEMFILEZENFILEZENOBUFSZENOMEM�call_exception_handlerr �TransportSocketr9 r; Z call_laterr ZACCEPT_RETRY_DELAYrS �_accept_connection2Z create_task) r! rQ r( r/ r% rR r. �_�conn�addr�excr$ rX r r r rP � s@ � ��� �z(BaseSelectorEventLoop._accept_connectionc � s� d }d }zr|� }| � � } |r8| j|||| d|||d�}n| j||| ||d�}z| I d H W n tyv |�� � Y n0 W nt ttfy� � Y n^ ty� } zF| jr�d| d�} |d ur�|| d< |d ur�|| d< | �| � W Y d } ~ n d } ~ 0 0 d S )NT)r* r, r$ r% r. )r* r$ r% z3Error on transport creation for incoming connection)rT rU r) � transport) � create_futurer0 r+ � BaseExceptionr7 � SystemExit�KeyboardInterruptrM r[ ) r! rQ r_ r$ r/ r% r. r) rb r* ra �contextr r r r] � s@ �� �z)BaseSelectorEventLoop._accept_connection2c C s� |}t |t�sHzt|�� �}W n( tttfyF td|���d �Y n0 z| j| }W n tyh Y n 0 |�� s�t d|�d|����d S )NzInvalid file object: zFile descriptor z is used by transport ) � isinstance�intr; �AttributeError� TypeError� ValueErrorr r � is_closingr4 )r! r r; rb r r r �_ensure_fd_no_transport� s ��z-BaseSelectorEventLoop._ensure_fd_no_transportc G s� | � � t�||| d �}z| j�|�}W n( tyP | j�|tj|d f� Y n>0 |j|j }\}}| j� ||tjB ||f� |d ur�|� � |S r& ) � _check_closedr �Handler r r �registerr � EVENT_READrC �modify�cancel� r! r �callback�args�handler �mask�reader�writerr r r r@ � s � �z!BaseSelectorEventLoop._add_readerc C s� | � � r dS z| j�|�}W n ty0 Y dS 0 |j|j }\}}|tj M }|sb| j�|� n| j� ||d |f� |d ur�|� � dS dS d S )NFT) r5 r r r r rC r rr � unregisterrs rt �r! r r ry rz r{ r r r r9 s z$BaseSelectorEventLoop._remove_readerc G s� | � � t�||| d �}z| j�|�}W n( tyP | j�|tjd |f� Y n>0 |j|j }\}}| j� ||tjB ||f� |d ur�|� � |S r& ) ro r rp r r r rq r � EVENT_WRITErC rs rt ru r r r � _add_writer! s � �z!BaseSelectorEventLoop._add_writerc C s� | � � r dS z| j�|�}W n ty0 Y dS 0 |j|j }\}}|tj M }|sb| j�|� n| j� |||df� |dur�|� � dS dS dS )�Remove a writer callback.FNT) r5 r r r r rC r r~ r| rs rt r} r r r �_remove_writer1 s z$BaseSelectorEventLoop._remove_writerc G s" | � |� | j||g|�R � dS )zAdd a reader callback.N)rn r@ �r! r rv rw r r r � add_readerH s z BaseSelectorEventLoop.add_readerc C s | � |� | �|�S )zRemove a reader callback.)rn r9 �r! r r r r � remove_readerM s z#BaseSelectorEventLoop.remove_readerc G s" | � |� | j||g|�R � dS )zAdd a writer callback..N)rn r r� r r r � add_writerR s z BaseSelectorEventLoop.add_writerc C s | � |� | �|�S )r� )rn r� r� r r r � remove_writerW s z#BaseSelectorEventLoop.remove_writerc � s� t �|� | jr$|�� dkr$td��z |�|�W S ttfyF Y n0 | �� }|� � }| � |� | � || j |||�}|� tj| j||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 � the socket must be non-blocking�rx N)r �_check_ssl_socketrM � gettimeoutrl rE rG rF rc r; rn r@ � _sock_recv�add_done_callback� functools�partial�_sock_read_done)r! r( �n�futr rx r r r � sock_recv\ s �z BaseSelectorEventLoop.sock_recvc C s |d u s|� � s| �|� d S r& )� cancelledr� �r! r r� rx r r r r� r s z%BaseSelectorEventLoop._sock_read_donec C s� |� � r d S z|�|�}W nZ ttfy2 Y d S ttfyH � Y n8 tyt } z|�|� W Y d }~nd }~0 0 |�|� d S r& ) �donerE rG rF re rf rd � set_exception� set_result)r! r� r( r� rC ra r r r r� v s z BaseSelectorEventLoop._sock_recvc � s� t �|� | jr$|�� dkr$td��z |�|�W S ttfyF Y n0 | �� }|� � }| � |� | � || j |||�}|� tj| j||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 r� r� N)r r� rM r� rl � recv_intorG rF rc r; rn r@ �_sock_recv_intor� r� r� r� )r! r( �bufr� r rx r r r �sock_recv_into� s �z$BaseSelectorEventLoop.sock_recv_intoc C s� |� � r d S z|�|�}W nZ ttfy2 Y d S ttfyH � Y n8 tyt } z|�|� W Y d }~nd }~0 0 |�|� d S r& ) r� r� rG rF re rf rd r� r� )r! r� r( r� �nbytesra r r r r� � s z%BaseSelectorEventLoop._sock_recv_intoc � s� t �|� | jr$|�� dkr$td��z|�|�}W n ttfyL d}Y n0 |t|�kr^dS | � � }|� � }| � |� | � || j ||t|�|g�}|�tj| j||d�� |I dH S )a� Send data to the socket. The socket must be connected to a remote socket. This method continues to send data from data until either all data has been sent or an error occurs. None is returned on success. On error, an exception is raised, and there is no way to determine how much data, if any, was successfully processed by the receiving end of the connection. r r� Nr� )r r� rM r� rl rK rG rF �lenrc r; rn r � _sock_sendall� memoryviewr� r� r� �_sock_write_done)r! r( rC r� r� r rx r r r � sock_sendall� s& ��z"BaseSelectorEventLoop.sock_sendallc C s� |� � r d S |d }z|�||d � �}W n\ ttfyB Y d S ttfyX � Y n0 ty� } z|�|� W Y d }~d S d }~0 0 ||7 }|t|�kr�|� d � n||d< d S )Nr ) r� rK rG rF re rf rd r� r� r� )r! r� r( Zview�pos�startr� ra r r r r� � s z#BaseSelectorEventLoop._sock_sendallc � s� t �|� | jr$|�� dkr$td��|jtjksBt jrt|jtj krt| j ||j|j |j | d�I dH }|d \}}}}}| � � }| �|||� |I dH S )zTConnect to a remote socket at address. This method is a coroutine. r r� )�family�type�proto�loopN)r r� rM r� rl r� r> ZAF_INETZ _HAS_IPv6ZAF_INET6Z_ensure_resolvedr� r� rc � _sock_connect)r! r( r2 Zresolvedr^ r� r r r � sock_connect� s � �� z"BaseSelectorEventLoop.sock_connectc C s� |� � }z|�|� W n� ttfyb | �|� | �|| j|||�}|�tj | j ||d�� Y nN t t fyx � Y n8 t y� } z|�|� W Y d }~nd }~0 0 |�d � d S )Nr� )r; ZconnectrG rF rn r �_sock_connect_cbr� r� r� r� re rf rd r� r� )r! r� r( r2 r rx ra r r r r� � s �� z#BaseSelectorEventLoop._sock_connectc C s |d u s|� � s| �|� d S r& )r� r� r� r r r r� s z&BaseSelectorEventLoop._sock_write_donec C s� |� � r d S z,|�tjtj�}|dkr6t|d|� ���W nX ttfyN Y nN tt fyd � Y n8 t y� } z|� |� W Y d }~nd }~0 0 |� d � d S )Nr zConnect call failed ) r� Z getsockoptr> Z SOL_SOCKETZSO_ERRORrL rG rF re rf rd r� r� )r! r� r( r2 �errra r r r r� s z&BaseSelectorEventLoop._sock_connect_cbc � sB t �|� | jr$|�� dkr$td��| �� }| �||� |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 r� N)r r� rM r� rl rc � _sock_accept)r! r( r� r r r � sock_accept" s z!BaseSelectorEventLoop.sock_acceptc C s� |� � }z|�� \}}|�d� W n� ttfyl | �|� | �|| j||�}|�t j | j ||d�� Y nR t t fy� � Y n< ty� } z|�|� W Y d }~nd }~0 0 |�||f� d S )NFr� )r; rX r? rG rF rn r@ r� r� r� r� r� re rf rd r� r� )r! r� r( r r_ r2 rx ra r r r r� 1 s � z"BaseSelectorEventLoop._sock_acceptc � s� | j |j= |�� }|�� |�� I d H zL| j|j|||dd�I d H W |�� |rZ|�� || j |j< S || j |j< n"|�� |r�|�� || j |j< 0 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_nativeB s* � � �z&BaseSelectorEventLoop._sendfile_nativec C s� |D ]v\}}|j |j }\}}|tj@ rL|d urL|jrB| �|� n | �|� |tj@ r|d ur|jrp| �|� q| �|� qd S r& ) �fileobjrC r rr Z _cancelledr9 Z _add_callbackr~ r� )r! Z event_listr ry r� rz r{ r r r �_process_eventsP s z%BaseSelectorEventLoop._process_eventsc C s | � |�� � |�� d S r& )r9 r; r7 )r! r( r r r � _stop_serving^ s z#BaseSelectorEventLoop._stop_serving)N)N)N)NNN)N)N)-r � __module__� __qualname__�__doc__r r+ r ZSSL_HANDSHAKE_TIMEOUTr0 r3 r7 r6 r rD rA rN rS rP r] rn r@ r9 r r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� � __classcell__r r r" r r + sj � �� � � � .� ) r c s� e Zd ZdZeZdZd � fdd� Zdd� Zdd� Z d d � Z d d � Z d d� Z dd� Z ejfdd�Zd dd�Zdd� Zdd� Zdd� Zd d � Z� ZS ) �_SelectorTransporti Nc s� t � �||� t�|�| jd< z|�� | jd< W n tyL d | jd< Y n0 d| jvr�z|�� | jd< W n tj y� d | jd< Y n0 || _ |� � | _ d| _ | �|� || _| �� | _d| _d| _| jd ur�| j�� | |j| j < d S )Nr> ZsocknamerV Fr )r r r r\ �_extraZ getsocknamerL Z getpeernamer> �errorr� r; r� �_protocol_connected� set_protocol�_server�_buffer_factory�_buffer� _conn_lost�_closingZ_attachr )r! r� r( r) r$ r% r" r r r o s, z_SelectorTransport.__init__c C s� | j jg}| jd u r |�d� n| jr0|�d� |�d| j� �� | jd ur�| 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� �_loopr5 r r r rr r~ �get_write_buffer_size�format�join)r! �infor� �state�bufsizer r r �__repr__� s. � �z_SelectorTransport.__repr__c C s | � d � d S r& )� _force_closer8 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 r& )r� r8 r r r � get_protocol� s z _SelectorTransport.get_protocolc C s | j S r& )r� r8 r r r rm � 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� r9 r� r� r� r� � call_soon�_call_connection_lostr8 r r r r7 � s z_SelectorTransport.closec C s, | j d ur(|d| ��t| d� | j �� d S )Nzunclosed transport )�source)r� �ResourceWarningr7 )r! Z_warnr 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: %sTrI )rT rU rb r) ) rh rL r� � get_debugr r r[ r� r� )r! ra rT 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 r� ) r� r� �clearr� r� r� r� r9 r� r� �r! ra r r r r� � s z _SelectorTransport._force_closec C s� zN| j r| j�|� W | j�� d | _d | _d | _| j}|d ur�|�� d | _n:| j�� d | _d | _d | _| j}|d ur�|�� d | _0 d S r& )r� r� Zconnection_lostr� r7 r� r� Z_detach)r! ra r% r r r r� � s& � z(_SelectorTransport._call_connection_lostc C s t | j�S r& )r� r� r8 r r r r� � s z(_SelectorTransport.get_write_buffer_sizec G s$ | j r d S | jj||g|�R � d S r& )r� r� r@ r� r r r r@ � s z _SelectorTransport._add_reader)NN)r� )r r� r� �max_size� bytearrayr� r� r r� r� r� r� rm r7 �warnings�warnr� r� r� r� r� r@ r� r r r" r r� c 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 )$r' TNc s~ d | _ t� �|||||� d| _d| _d | _t�| j� | j � | j j | � | j � | j | j| j� |d urz| j � tj|d � d S r )�_read_ready_cbr r �_eof�_paused� _empty_waiterr Z _set_nodelayr� r� r� r� �connection_mader@ r� � _read_readyr � _set_result_unless_cancelled)r! r� r( r) r* r$ r% r" r r r � s � �z!_SelectorSocketTransport.__init__c s. t |tj�r| j| _n| j| _t� �|� d S r& )rh r ZBufferedProtocol�_read_ready__get_bufferr� �_read_ready__data_receivedr r� r� r" r r r� s z%_SelectorSocketTransport.set_protocolc C s | j o| j S r& )r� r� r8 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� r9 r� r� r r r8 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 r8 r r r r� " s z'_SelectorSocketTransport.resume_readingc C s | � � d S r& )r� r8 r r r r� * s z$_SelectorSocketTransport._read_readyc C sV | j r d S z | j�d�}t|�s(td��W nH ttfyB � Y n2 tyr } z| �|d� W Y d }~d S d }~0 0 z| j � |�}W n^ t t fy� Y d S ttfy� � Y n2 ty� } z| �|d� W Y d }~d S d }~0 0 |� s�| � � d S z| j�|� W nJ ttf�y � Y n2 t�yP } z| �|d� W Y d }~n d }~0 0 d S )N���z%get_buffer() returned an empty bufferz/Fatal error: protocol.get_buffer() call failed.�$Fatal read error on socket transportz3Fatal error: protocol.buffer_updated() call failed.)r� r� Z get_bufferr� r4 re rf rd r� r� r� rG rF �_read_ready__on_eofZbuffer_updated)r! r� ra r� r r r r� - sB � �z0_SelectorSocketTransport._read_ready__get_bufferc C s� | j r d S z| j�| j�}W n^ ttfy4 Y d S ttfyJ � Y n2 tyz } z| � |d� W Y d }~d S d }~0 0 |s�| � � d S z| j � |� W nF ttfy� � Y n0 ty� } z| � |d� W Y d }~n d }~0 0 d S )Nr� z2Fatal error: protocol.data_received() call failed.) r� r� rE r� rG rF re rf rd r� r� r� Z data_received)r! rC ra r r r r� R s, �z3_SelectorSocketTransport._read_ready__data_receivedc C s� | j �� rt�d| � z| j�� }W nH ttfy< � Y n2 tyl } z| � |d� W Y d }~d S d }~0 0 |r�| j � | j � n| � � d S )Nz%r received EOFz1Fatal error: protocol.eof_received() call failed.) r� r� r r r� Z eof_receivedre rf rd r� r9 r� r7 )r! Z keep_openra r r r r� k s �z,_SelectorSocketTransport._read_ready__on_eofc C s0 t |tttf�s$tdt|�j����| jr2td��| j d urDtd��|sLd S | j rz| j t j krht �d� | j d7 _ d S | j�sz| j�|�}W n\ ttfy� Y n^ ttfy� � Y nH ty� } z| �|d� W Y d }~d S d }~0 0 ||d � }|�sd S | j�| j| j� | j� |� | � � d S )N�/data argument must be a bytes-like object, not z%Cannot call write() after write_eof()z(unable to write; sendfile is in progress� socket.send() raised exception.r �%Fatal write error on socket transport) rh �bytesr� r� rk r� r r� r4 r� r� r �!LOG_THRESHOLD_FOR_CONNLOST_WRITESr �warningr� r� rK rG rF re rf rd r� r� r r� � _write_ready�extend�_maybe_pause_protocol)r! rC r� ra r r r �write� s> � z _SelectorSocketTransport.writec C s | j r d S z| j�| j�}W n� ttfy2 Y n� ttfyH � Y n� ty� } zF| j � | j � | j� � | � |d� | jd ur�| j�|� W Y d }~nvd }~0 0 |r�| jd |�= | �� | j�s| j � | j � | jd ur�| j�d � | jr�| �d � n| j�r| j�tj� d S )Nr� )r� r� rK r� rG rF re rf rd r� r� r� r� r� r� r� �_maybe_resume_protocolr� r� r� r� �shutdownr> �SHUT_WR)r! r� ra r r r r � s2 " z%_SelectorSocketTransport._write_readyc C s. | j s | jrd S d| _| js*| j�tj� d S r� )r� r� r� r� r r> r r8 r r r � write_eof� s z"_SelectorSocketTransport.write_eofc C s dS r� r r8 r r r � can_write_eof� s z&_SelectorSocketTransport.can_write_eofc s* t � �|� | jd ur&| j�td�� d S )Nz Connection is closed by peer)r r� r� r� �ConnectionErrorr� r" r r r� � s �z._SelectorSocketTransport._call_connection_lostc C s6 | j d urtd��| j�� | _ | js0| j �d � | j S )NzEmpty waiter is already set)r� r4 r� rc r� r� r8 r r r r� � s z+_SelectorSocketTransport._make_empty_waiterc C s d | _ d S r& )r� r8 r r r r� � s z,_SelectorSocketTransport._reset_empty_waiter)NNN)r r� r� Z_start_tls_compatibler Z _SendfileModeZ TRY_NATIVEZ_sendfile_compatibler r� r� r� r� r� r� r� r� r r r r r� r� r� r� r r r" r r' � s( � %' r' c sF e Zd ZejZd � fdd� Zdd� Zdd� Zd dd �Z d d � Z � Z S )r1 Nc s^ t � �||||� || _| j�| jj| � | j�| j| j| j � |d urZ| j�t j |d � d S r& ) r r �_addressr� r� r� r� r@ r� r� r r� )r! r� r( r) r2 r* r$ r" r r r � s � �z#_SelectorDatagramTransport.__init__c C s t dd� | jD ��S )Nc s s | ]\}}t |�V qd S r& )r� )�.0rC r^ r r r � <genexpr>� � zC_SelectorDatagramTransport.get_write_buffer_size.<locals>.<genexpr>)�sumr� r8 r r r r� � s z0_SelectorDatagramTransport.get_write_buffer_sizec C s� | j r d S z| j�| j�\}}W n� ttfy6 Y n� tyd } z| j�|� W Y d }~n\d }~0 t t fyz � Y n> t y� } z| � |d� W Y d }~nd }~0 0 | j� ||� d S )Nz&Fatal read error on datagram transport)r� r� Zrecvfromr� rG rF rL r� �error_receivedre rf rd r� Zdatagram_received�r! rC r` ra r r r r� � s "z&_SelectorDatagramTransport._read_readyc C s� t |tttf�s$tdt|�j����|s,d S | jrV|d | jfvrPtd| j� ���| j}| j r�| jr�| j t j krxt � d� | j d7 _ d S | j�sdz,| jd r�| j�|� n| j�||� W d S ttfy� | j�| j| j� Y n~ t�y } z| j�|� W Y d }~d S d }~0 t t f�y0 � Y n4 t �yb } z| � |d� W Y d }~d S d }~0 0 | j� t|�|f� | �!� d S )Nr� z!Invalid address: must be None or r� r rV �'Fatal write error on datagram transport)"rh r� r� r� rk r� r r rl r� r r� r r� r� r� r� rK �sendtorG rF r� r r� � _sendto_readyrL r� r re rf rd r� r� r r r r r r sJ � � �z!_SelectorDatagramTransport.sendtoc C s | j r�| j �� \}}z*| jd r.| j�|� n| j�||� W q ttfyh | j �||f� Y q�Y q t y� } z| j � |� W Y d }~d S d }~0 t t fy� � Y q ty� } z| �|d� W Y d }~d S d }~0 0 q | �� | j �s| j�| j� | j�r| �d � d S )NrV r )r� �popleftr� r� rK r rG rF � appendleftrL r� r re rf rd r� r r� r� r� r� r� r r r r r 0 s0 �z(_SelectorDatagramTransport._sendto_ready)NNN)N) r r� r� � collections�dequer� r r� r� r r r� r r r" r r1 � s � +r1 ) r� �__all__r rZ r� r r> r� r Zssl� ImportError� r r r r r r r r �logr r Z BaseEventLoopr Z_FlowControlMixinZ Transportr� r' r1 r r r r �<module> sD <� o