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Editing: selector_events.cpython-38.opt-2.pyc
U e5dT� � @ s* d Z ddlZddlZddlZddlZddlZddlZddlZz ddlZW n e k r` dZY nX ddl m Z ddl m Z ddl m Z ddl mZ ddl mZ dd l mZ dd l mZ dd l mZ dd lmZ d d� Zdd� ZG dd� de j�ZG dd� dejej�ZG dd� de�Z G dd� de�Z dS ))�BaseSelectorEventLoop� N� )� base_events)� constants)�events)�futures)� protocols)�sslproto)� transports)�trsock)�loggerc C s8 z| � |�}W n tk r$ Y dS X t|j|@ �S d S �NF)�get_key�KeyError�boolr )�selector�fdZevent�key� r �//usr/lib64/python3.8/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 ZdR� fdd� ZdSddd�dd�ZdTddddejd�d d �ZdUd d �Z� fd d�Z dd� Z dd� Z dd� Z dd� Z dd� Zdddejfdd�Zdddejfd d �Zddejfd d �Zd d!� Zd"d#� Zd$d%� Zd&d'� Zd(d)� Zd*d+� Zd,d-� Zd.d/� Zd0d1� Zd2d3� Zd4d5� Z d6d7� Z d8d9� Z d:d;� Z d<d=� Z d>d?� Z!d@dA� Z"dBdC� Z#dDdE� Z$dFdG� Z%dHdI� Z&dJdK� Z'dLdM� Z(dNdO� Z)dPdQ� Z*� Z+S )Vr 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 6 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)r2 r( )r Z SSLProtocolr, Z_app_transport) r& Zrawsockr- � sslcontextr. r0 r1 r) r* r2 Z ssl_protocolr r r �_make_ssl_transportE s � �z)BaseSelectorEventLoop._make_ssl_transportc C s t | |||||�S r+ )�_SelectorDatagramTransport)r& r r- �addressr. r) r r r �_make_datagram_transportR 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 r; W s zBaseSelectorEventLoop.closec C sB | � | j�� � | j�� d | _| j�� d | _| jd8 _d S )Nr )�_remove_reader�_ssock�filenor; �_csock� _internal_fdsr< r r r r: b s z&BaseSelectorEventLoop._close_self_pipec C sN t �� \| _| _| j�d� | j�d� | jd7 _| �| j�� | j� d S )NFr ) �socketZ socketpairr> r@ � setblockingrA � _add_readerr? �_read_from_selfr< r r r r# j s z%BaseSelectorEventLoop._make_self_pipec C s d S r+ r �r& �datar r r �_process_self_datar s z(BaseSelectorEventLoop._process_self_datac C sX z"| j �d�}|sW qT| �|� W q tk r: Y q Y q tk rP Y qTY q X q d S )Ni )r> �recvrH �InterruptedError�BlockingIOErrorrF r r r rE u s z%BaseSelectorEventLoop._read_from_selfc C sN | j }|d krd S z|�d� W n( tk rH | jrDtjddd� 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$BaseSelectorEventLoop._write_to_self�d c C s" | � |�� | j||||||� d S r+ )rD r? �_accept_connection)r& �protocol_factoryr r3 r* �backlogr2 r r r �_start_serving� s �z$BaseSelectorEventLoop._start_servingc C s t |�D ]�}z0|�� \}} | jr0t�d|| |� |�d� W n� tttfk rZ Y d S t k r� } zd| j t j t j t j t jfkr�| �d| t�|�d�� | �|�� � | �tj| j||||||� n� W 5 d } ~ X Y qX d| i} | �||| |||�} | �| � qd S )Nz#%r got a new connection from %r: %rFz&socket.accept() out of system resource)�message� exceptionrB �peername)�range�acceptrQ r r rC rK rJ �ConnectionAbortedErrorrP �errnoZEMFILEZENFILEZENOBUFSZENOMEM�call_exception_handlerr �TransportSocketr= r? Z call_laterr ZACCEPT_RETRY_DELAYrW �_accept_connection2Z create_task) r& rU r r3 r* rV r2 �_�conn�addr�excr) r\ r r r rT � sV � �� � �z(BaseSelectorEventLoop._accept_connectionc � s� d }d }zt|� }| � � } |r8| j|||| d|||d�}n| j||| ||d�}z| I d H W n tk rx |�� � Y nX W nt ttfk r� � Y n\ tk r� } z>| jr�d| d�} |d k r�|| d< |d k r�|| d< | �| � W 5 d } ~ X Y nX d S )NT)r. r0 r) r* r2 )r. r) r* z3Error on transport creation for incoming connection)rX rY r- � transport) � create_futurer4 r/ � BaseExceptionr; � SystemExit�KeyboardInterruptrQ r_ ) r& rU rc r) r3 r* r2 r- rf r. re �contextr r r ra � sP � � �z)BaseSelectorEventLoop._accept_connection2c C s� |}t |t�sJzt|�� �}W n* tttfk rH td|���d �Y nX z| 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 �intr? �AttributeErrorr � ValueErrorr% r � is_closingr8 )r& r r? rf r r r �_ensure_fd_no_transport� s �z-BaseSelectorEventLoop._ensure_fd_no_transportc G s� | � � t�||| d �}z| j�|�}W n* tk rR | j�|tj|d f� Y n>X |j|j }\}}| j� ||tjB ||f� |d k r�|� � d S r+ ) � _check_closedr �Handler" r r �registerr � EVENT_READrG �modify�cancel� r& r �callback�argsZhandler �mask�reader�writerr r r rD s � �z!BaseSelectorEventLoop._add_readerc C s� | � � r dS z| j�|�}W n tk r2 Y dS X |j|j }\}}|tj M }|sd| j�|� n| j� ||d |f� |d k r�|� � dS dS d S �NFT) r9 r" r r r rG r rt � unregisterru rv �r& r r rz r{ r| r r r r= s z$BaseSelectorEventLoop._remove_readerc G s� | � � t�||| d �}z| j�|�}W n* tk rR | j�|tjd |f� Y n>X |j|j }\}}| j� ||tjB ||f� |d k r�|� � d S r+ ) rq r rr r" r r rs r � EVENT_WRITErG ru rv rw r r r � _add_writer% s � �z!BaseSelectorEventLoop._add_writerc C s� | � � r dS z| j�|�}W n tk r2 Y dS X |j|j }\}}|tj M }|sd| j�|� n| j� |||d f� |d k r�|� � dS dS d S r} ) r9 r" r r r rG r r� r~ ru rv r r r r �_remove_writer4 s z$BaseSelectorEventLoop._remove_writerc G s | � |� | j||f|�� S r+ )rp rD �r& r rx ry r r r � add_readerK s z BaseSelectorEventLoop.add_readerc C s | � |� | �|�S r+ )rp r= �r& r r r r � remove_readerP s z#BaseSelectorEventLoop.remove_readerc G s | � |� | j||f|�� S r+ )rp r� r� r r r � add_writerU s z BaseSelectorEventLoop.add_writerc C s | � |� | �|�S r+ )rp r� r� r r r � remove_writerZ s z#BaseSelectorEventLoop.remove_writerc � s� t |� | jr"|�� dkr"td��z |�|�W S ttfk rF Y nX | �� }|�� }| � || j |||� |� t � | j|�� |I d H S �Nr � the socket must be non-blocking)r rQ � gettimeoutrn rI rK rJ rg r? r� � _sock_recv�add_done_callback� functools�partial�_sock_read_done)r& r �n�futr r r r � sock_recv_ s �z BaseSelectorEventLoop.sock_recvc C s | � |� d S r+ )r� �r& r r� r r r r� t s z%BaseSelectorEventLoop._sock_read_donec C s� |� � r d S z|�|�}W n\ ttfk r4 Y d S ttfk rL � Y n6 tk rv } z|�|� W 5 d }~X Y n X |�|� d S r+ ) �donerI rK rJ ri rj rh � set_exception� set_result)r& r� r r� rG re r r r r� w s z BaseSelectorEventLoop._sock_recvc � s� t |� | jr"|�� dkr"td��z |�|�W S ttfk rF Y nX | �� }|�� }| � || j |||� |� t � | j|�� |I d H S r� )r rQ r� rn � recv_intorK rJ rg r? r� �_sock_recv_intor� r� r� r� )r& r �bufr� r r r r �sock_recv_into� s �z$BaseSelectorEventLoop.sock_recv_intoc C s� |� � r d S z|�|�}W n\ ttfk r4 Y d S ttfk rL � Y n6 tk rv } z|�|� W 5 d }~X Y n X |�|� d S r+ ) r� r� rK rJ ri rj rh r� r� )r& r� r r� �nbytesre r r r r� � s z%BaseSelectorEventLoop._sock_recv_intoc � s� t |� | jr"|�� dkr"td��z|�|�}W n ttfk rL d}Y nX |t|�kr^d S | �� }|� � }|� t � | j |�� | �|| j||t|�|g� |I d H S r� )r rQ r� rn rO rK rJ �lenrg r? r� r� r� �_sock_write_doner� � _sock_sendall� memoryview)r& r rG r� r� r r r r � sock_sendall� s& � �z"BaseSelectorEventLoop.sock_sendallc C s� |� � r d S |d }z|�||d � �}W nb ttfk rD Y d S ttfk r\ � Y n2 tk r� } z|�|� W Y �d S d }~X Y nX ||7 }|t|�kr�|� d � n||d< d S )Nr ) r� rO rK rJ ri rj rh r� r� r� )r& r� r Zview�pos�startr� re r r r r� � s z#BaseSelectorEventLoop._sock_sendallc � s� t |� | jr"|�� dkr"td��ttd�r8|jtjkrf| j||j|j | d�I d H }|d \}}}}}| � � }| � |||� |I d H S )Nr r� �AF_UNIX)�family�proto�loop) r rQ r� rn �hasattrrB r� r� Z_ensure_resolvedr� rg � _sock_connect)r& r r6 Zresolvedrb r� r r r � sock_connect� s � z"BaseSelectorEventLoop.sock_connectc C s� |� � }z|�|� W n� ttfk rV |�t�| j|�� | �|| j |||� Y nN t t fk rn � Y n6 t k r� } z|� |� W 5 d }~X Y n X |�d � d S r+ )r? ZconnectrK rJ r� r� r� r� r� �_sock_connect_cbri rj rh r� r� )r& r� r r6 r re r r r r� � s � z#BaseSelectorEventLoop._sock_connectc C s | � |� d S r+ )r� r� r r r r� s z&BaseSelectorEventLoop._sock_write_donec C s� |� � r d S z,|�tjtj�}|dkr6t|d|� ���W nZ ttfk rP Y nN tt fk rh � Y n6 t k r� } z|� |� W 5 d }~X Y n X |� d � d S )Nr zConnect call failed ) r� Z getsockoptrB Z SOL_SOCKETZSO_ERRORrP rK rJ ri rj rh r� r� )r& r� r r6 �errre r r r r� s z&BaseSelectorEventLoop._sock_connect_cbc � sB t |� | jr"|�� dkr"td��| �� }| �|d|� |I d H S )Nr r� F)r rQ r� rn rg � _sock_accept)r& r r� r r r � sock_accept s z!BaseSelectorEventLoop.sock_acceptc C s� |� � }|r| �|� |�� r"d S z|�� \}}|�d� W nn ttfk rh | �|| j|d|� Y nR t t fk r� � Y n: t k r� } z|� |� W 5 d }~X Y nX |� ||f� d S r} )r? r� r� r\ rC rK rJ r� r� ri rj rh r� r� )r& r� Z registeredr r rc r6 re r r r r� * s z"BaseSelectorEventLoop._sock_acceptc � sp | j |j= |�� }|�� |�� I d H z | j|j|||dd�I d H W �S |�� |r^|�� || j |j< X d S )NF)Zfallback) r% �_sock_fd� is_reading� pause_reading�_make_empty_waiter�_reset_empty_waiter�resume_readingZ sock_sendfile�_sock)r& Ztransp�file�offset�countr� r r r �_sendfile_native< s �z&BaseSelectorEventLoop._sendfile_nativec C s� |D ]v\}}|j |j }\}}|tj@ rL|d k rL|jrB| �|� n | �|� |tj@ r|d k r|jrp| �|� q| �|� qd S r+ ) �fileobjrG r rt Z _cancelledr= Z _add_callbackr� r� )r& Z event_listr rz r� r{ r| r r r �_process_eventsJ s z%BaseSelectorEventLoop._process_eventsc C s | � |�� � |�� d S r+ )r= r? r; )r& r r r r � _stop_servingX s z#BaseSelectorEventLoop._stop_serving)N)N)N)NNN),r! � __module__� __qualname__r r/ r ZSSL_HANDSHAKE_TIMEOUTr4 r7 r; r: r# rH rE rR rW rT ra rp rD r= 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 0 s| � � � � � � . � ) 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 tk rN d | jd< Y nX d| jkr�z|�� | jd< W n tj k r� d | jd< Y nX || _ |� � | _ d| _ | �|� || _| �� | _d| _d| _| jd k r�| j�� | |j| j < d S )NrB ZsocknamerZ Fr )r r r r` �_extraZ getsocknamerP Z getpeernamerB �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 i 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� �_loopr9 r r" r rt r� �get_write_buffer_size�format�join)r& �infor� �state�bufsizer r r �__repr__� s0 � �z_SelectorTransport.__repr__c C s | � d � d S r+ )� _force_closer< 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� r< r r r � get_protocol� s z _SelectorTransport.get_protocolc C s | j S r+ )r� r< r r r ro � 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� r= r� r� r� r� � call_soon�_call_connection_lostr< r r r r; � s z_SelectorTransport.closec C s, | j d k r(|d| ��t| d� | j �� d S )Nzunclosed transport )�source)r� �ResourceWarningr; )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: %sTrM )rX rY rf r- ) r rP r� � get_debugr r r_ r� r� )r& re rX 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� r= r� r� �r& re r r r r� � s z _SelectorTransport._force_closec C sV z| jr| j�|� W 5 | j �� d | _ d | _d | _| j}|d k rP|�� d | _X d S r+ )r� r; r� r� r� Z_detachr� Zconnection_lost)r& re r* r r r r� � s z(_SelectorTransport._call_connection_lostc C s t | j�S r+ )r� r� r< r r r r� � s z(_SelectorTransport.get_write_buffer_sizec G s" | j r d S | jj||f|�� d S r+ )r� r� rD r� r r r rD � s z _SelectorTransport._add_reader)NN)r� )r! r� r� �max_size� bytearrayr� r� r r� r� r� r� ro r; �warnings�warnr� r� r� r� r� rD 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 r )�_read_ready_cbr r �_eof�_paused� _empty_waiterr Z _set_nodelayr� r� r� r� �connection_maderD 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+ )r 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� 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� r= 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� rD r� r� r� r� r r r< r r r r� s z'_SelectorSocketTransport.resume_readingc C s | � � d S r+ )r� r< r r r r� $ s z$_SelectorSocketTransport._read_readyc C s` | j r d S z | j�d�}t|�s(td��W nL ttfk rD � Y n4 tk rv } z| �|d� W Y �d S d }~X Y nX z| j � |�}W nd t t fk r� Y d S ttfk r� � Y n4 tk r� } z| �|d� W Y �d S d }~X Y nX |�s | � � d S z| j�|� W nJ ttfk �r, � Y n0 tk �rZ } z| �|d� W 5 d }~X Y nX d S )N���z%get_buffer() returned an empty bufferz/Fatal error: protocol.get_buffer() call failed.�$Fatal read error on socket transportz3Fatal error: protocol.buffer_updated() call failed.)r� r� Z get_bufferr� r8 ri rj rh r� r� r� rK rJ �_read_ready__on_eofZbuffer_updated)r& r� re r� r r r r� ' sF � �z0_SelectorSocketTransport._read_ready__get_bufferc C s� | j r d S z| j�| j�}W nd ttfk r6 Y d S ttfk rN � Y n4 tk r� } z| � |d� W Y �d S d }~X Y nX |s�| � � d S z| j � |� W nF ttfk r� � Y n. tk r� } z| � |d� W 5 d }~X Y nX d S )Nr� z2Fatal error: protocol.data_received() call failed.) r� r� rI r� rK rJ ri rj rh r� r� r� Z data_received)r& rG re r r r r� L s. �z3_SelectorSocketTransport._read_ready__data_receivedc C s� | j �� rt�d| � z| j�� }W nL ttfk r> � Y n4 tk rp } z| � |d� W Y �d S d }~X Y nX |r�| j � | j � n| � � d S )Nz%r received EOFz1Fatal error: protocol.eof_received() call failed.) r� r� r r r� Z eof_receivedri rj rh r� r= r� r; )r& Z keep_openre r r r r� e s �z,_SelectorSocketTransport._read_ready__on_eofc C s6 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 z| j�|�}W nb ttfk r� Y nb ttfk r� � Y nJ tk r� } z| �|d� W Y �d S d }~X Y nX ||d � }|�s d 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) r �bytesr� r� r �typer! r� r8 r� r� r �!LOG_THRESHOLD_FOR_CONNLOST_WRITESr �warningr� r� rO rK rJ ri rj rh r� r� r� r� � _write_ready�extend�_maybe_pause_protocol)r& rG r� re r r r �writez s: z _SelectorSocketTransport.writec C s | j r d S z| j�| j�}W n� ttfk r4 Y n� ttfk rL � Y n� tk r� } z>| j � | j � | j� � | � |d� | jd k r�| j�|� W 5 d }~X Y nnX |r�| jd |�= | �� | j�s| j � | j � | jd k r�| j�d � | jr�| �d � n| j�r| j�tj� d S )Nr� )r� r� rO r� rK rJ ri rj rh r� r� r� r� r� r� r� �_maybe_resume_protocolr� r� r� r� �shutdownrB �SHUT_WR)r& r� re 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 rB r r< r r r � write_eof� s z"_SelectorSocketTransport.write_eofc C s dS r� r 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� �ConnectionErrorr� 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� r8 r� rg r� r� r< r r r r� � s z+_SelectorSocketTransport._make_empty_waiterc C s d | _ d S r+ )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 )r5 Nc s^ t � �||||� || _| j�| jj| � | j�| j| j| j � |d k rZ| j�t j |d � d S r+ ) r r �_addressr� r� r� r� rD r� r� r r� )r& r� r r- r6 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� )�.0rG rb 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 z| j�| j�\}}W n� ttfk r8 Y n� tk rd } z| j�|� W 5 d }~X Y nT t t fk r| � Y n< t k r� } z| � |d� W 5 d }~X Y nX | j� ||� d S )Nz&Fatal read error on datagram transport)r� r� Zrecvfromr� rK rJ rP r� �error_receivedri rj rh r� Zdatagram_received�r& rG rd re r r r r� � s z&_SelectorDatagramTransport._read_readyc C s� 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�slz,| jd r�| j�|� n| j�||� W d S ttfk r� | j�| j| j� Y n� tk �r } z| j�|� W Y �d S d }~X Y nP t t fk �r6 � Y n6 t k �rj } z| � |d� W Y �d S d }~X Y nX | j� t|�|f� | �!� d S )Nr� z!Invalid address: must be None or r� r rZ �'Fatal write error on datagram transport)"r r� r� r� r r� r! r rn r� r r� r r� r� r� r� rO �sendtorK rJ r� r� r� � _sendto_readyrP r� r ri rj rh r� r� r r r r r r � sH � �z!_SelectorDatagramTransport.sendtoc C s | j r�| j �� \}}z*| jd r.| j�|� n| j�||� W q ttfk rj | j �||f� Y q�Y q t k r� } z| j � |� W Y �d S d }~X Y q t t fk r� � Y q tk r� } z| �|d� W Y �d S d }~X Y q X q | �� | j �s| j�| j� | j�r| �d � d S )NrZ r )r� �popleftr� r� rO r rK rJ � appendleftrP r� r ri rj rh r� r r� r� r� r� r� r r r r r * s2 �z(_SelectorDatagramTransport._sendto_ready)NNN)N) r! r� r� � collections�dequer� r r� r� r r r� r r r' r r5 � s � +r5 ) �__all__r r^ r� r rB r� r$ r � ImportError� r r r r r r r r �logr r r Z BaseEventLoopr Z_FlowControlMixinZ Transportr� r, r5 r r r r �<module> sD 1� o
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