Your IP : 18.216.161.178
o
6��f� � @ s$ d Z dZddlZddlZddlZddlZddlZddlZddlZzddl Z W n e
y1 dZ Y nw ddl m Z ddl m
Z
ddl mZ ddl mZ dd l mZ dd
l mZ dd l mZ dd l mZ dd
lmZ dd� ZG dd� de j�ZG dd� dejej�ZG dd� de�Z G dd� de�Z dS )z�Event loop using a selector and related classes.
A selector is a "notify-when-ready" multiplexer. 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 s2 z| � |�}W n
ty Y dS w t|j|@ �S �NF)�get_key�KeyError�boolr )�selector�fdZevent�key� r �>/opt/alt/python310/lib64/python3.10/asyncio/selector_events.py�_test_selector_event s �r c s� e Zd ZdZdS� fdd� ZdSddd�dd�Z dSddddejd �d
d �Z dTd d
�Z � fdd�Z
dd� Z dd� Z dd� Z
dd� Zdd� Zdddejfdd �Zdddejfd d �Zddejfd d �Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Z dSd5d6�Z d7d8� Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dSdEdF�Z%dGdH� Z&dIdJ� Z'dKdL� Z(dMdN� Z)dOdP� Z*dQdR� Z+� Z,S )Ur zJSelector event loop.
See events.EventLoop for API specification.
Nc sF t � �� |d u r
t�� }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 � 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 r& r' )�_SelectorDatagramTransport)r! r) r* �addressr+ r$ r r r �_make_datagram_transportM s �z.BaseSelectorEventLoop._make_datagram_transportc sP | � � rtd��| �� rd S | �� t� �� | jd ur&| j�� d | _d S d S )Nz!Cannot close a running event loop)Z
is_running� RuntimeError� is_closed�_close_self_piper �closer �r! r" r r r8 R s
�zBaseSelectorEventLoop.closec C sB | � | j�� � | j�� d | _| j�� d | _| jd8 _d S )Nr )�_remove_reader�_ssock�filenor8 �_csock�
_internal_fdsr9 r r r r7 ] 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_selfr9 r r r r e s
z%BaseSelectorEventLoop._make_self_pipec C s d S r' r �r! �datar r r �_process_self_datam � z(BaseSelectorEventLoop._process_self_datac C sN z| j �d�}|s
W d S | �|� W n ty Y q ty% Y d S w q)NTi )r; �recvrE �InterruptedError�BlockingIOErrorrC r r r rB p s ��z%BaseSelectorEventLoop._read_from_selfc C sR | j }|d u r d S z|�d� W d S ty( | jr%tjddd� Y d S Y d S w )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$BaseSelectorEventLoop._write_to_self�d c
C s" | � |�� | j||||||� d S r' )rA r< �_accept_connection)r! �protocol_factoryr) r0 r% �backlogr/ r r r �_start_serving� s
�z$BaseSelectorEventLoop._start_servingc
C s t |�D ]}}z|�� \}} | jrt�d|| |� |�d� W nO tttfy, Y d S t ym }
z6|
j
t
j t
j t
j
t
jfv rb| �d|
t�|�d�� | �|�� � | �tj| j||||||� n� W Y d }
~
qd }
~
ww d| i} | �||| |||�} | �| � qd S )Nz#%r got a new connection from %r: %rFz&socket.accept() out of system resource)�message� exceptionr? �peername)�range�acceptrO r r r@ rI rH �ConnectionAbortedErrorrN �errnoZEMFILEZENFILEZENOBUFSZENOMEM�call_exception_handlerr �TransportSocketr: r< Z
call_laterr ZACCEPT_RETRY_DELAYrU �_accept_connection2Z create_task)
r! rS r) r0 r% rT r/ �_�conn�addr�excr$ rZ r r r rR � sH � ��� ���
� �z(BaseSelectorEventLoop._accept_connectionc
� s� �d }d }z7|� }| � � } |r | j|||| d|||d�}n
| j||| ||d�}z | I d H W W d S ty< |�� � w ttfyF � ty| }
z+| jrqd|
d�} |d ur]|| d< |d ure|| d< | �| � W Y d }
~
d S W Y d }
~
d S d }
~
ww )NT)r+ r- r$ r% r/ )r+ r$ r% z3Error on transport creation for incoming connection)rV rW r* � transport) �
create_futurer1 r, �
BaseExceptionr8 �
SystemExit�KeyboardInterruptrO r] ) r! rS ra r$ r0 r% r/ r* rd r+ rc �contextr r r r_ � sJ ��� �����z)BaseSelectorEventLoop._accept_connection2c
C s� |}t |t�s"zt|�� �}W n tttfy! td|���d �w z| j| }W n
ty3 Y d S w |�� sBt d|�d|����d S )NzInvalid file object: zFile descriptor z is used by transport )
�
isinstance�intr< �AttributeError� TypeError�
ValueErrorr r �
is_closingr5 )r! r r< rd r r r �_ensure_fd_no_transport� s&
� ����z-BaseSelectorEventLoop._ensure_fd_no_transportc G s� | � � t�||| d �}z| j�|�}W n ty) | j�|tj|d f� Y |S w |j|j }\}}| j�
||tjB ||f� |d urH|� � |S r' ) �
_check_closedr �Handler r r �registerr �
EVENT_READrD �modify�cancel� r! r �callback�args�handler �mask�reader�writerr r r rA � �" ���z!BaseSelectorEventLoop._add_readerc C s� | � � rdS z| j�|�}W n
ty Y dS w |j|j}\}}|tj M }|s1| j�|� n
| j� ||d |f� |d urE|�
� dS dS )NFT) r6 r r r r rD r rt �
unregisterru rv �r! r r r{ r| r} r r r r: s � z$BaseSelectorEventLoop._remove_readerc G s� | � � t�||| d �}z| j�|�}W n ty) | j�|tjd |f� Y |S w |j|j }\}}| j�
||tjB ||f� |d urH|� � |S r' ) rq r rr r r r rs r � EVENT_WRITErD ru rv rw r r r � _add_writer! r~ z!BaseSelectorEventLoop._add_writerc C s� | � � rdS z| j�|�}W n
ty Y dS w |j|j}\}}|tj M }|s1| j�|� n
| j� |||df� |durE|�
� dS dS )�Remove a writer callback.FNT) r6 r r r r rD r r� r ru rv r� r r r �_remove_writer1 s � z$BaseSelectorEventLoop._remove_writerc G �" | � |� | j||g|�R � dS )zAdd a reader callback.N)rp rA �r! r rx ry r r r �
add_readerH �
z BaseSelectorEventLoop.add_readerc C � | � |� | �|�S )zRemove a reader callback.)rp r: �r! r r r r �
remove_readerM �
z#BaseSelectorEventLoop.remove_readerc G r� )zAdd a writer callback..N)rp r� r� r r r �
add_writerR r� z BaseSelectorEventLoop.add_writerc C r� )r� )rp r� r� r r r �
remove_writerW r� z#BaseSelectorEventLoop.remove_writerc � � �t �|� | jr|�� dkrtd��z|�|�W S ttfy$ Y nw | �� }|� � }| �
|� | � || 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�rz N)r �_check_ssl_socketrO �
gettimeoutrn rG rI rH re r< rp rA �
_sock_recv�add_done_callback� functools�partial�_sock_read_done)r! r) �n�futr rz r r r � sock_recv\ s" �
�
�
z BaseSelectorEventLoop.sock_recvc C �" |d u s|� � s| �|� d S d S r' )� cancelledr� �r! r r� rz r r r r� r � �z%BaseSelectorEventLoop._sock_read_donec
C � |� � rd S z|�|�}W n, ttfy Y d S ttfy" � ty9 } z |�|� W Y d }~d S d }~ww |�|� d S r' ) �donerG rI rH rg rh rf �
set_exception�
set_result)r! r� r) r� rD rc r r r r� v s ��z BaseSelectorEventLoop._sock_recvc � r� )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� rO r� rn � recv_intorI rH re r< rp rA �_sock_recv_intor� r� r� r� )r! r) �bufr� r rz r r r �sock_recv_into� s" �
�
�
z$BaseSelectorEventLoop.sock_recv_intoc
C r� r' ) r� r� rI rH rg rh rf r� r� )r! r� r) r� �nbytesrc r r r r� � s ��z%BaseSelectorEventLoop._sock_recv_intoc � s� �t �|� | jr|�� dkrtd��z|�|�}W n
ttfy' d}Y nw |t|�kr0dS | � � }|�
� }| � |� | � || j
||t|�|g�}|�tj| j||d�� |I dH S )a� Send data to the socket.
The socket must be connected to a remote socket. This method continues
to send data from data until either all data has been sent or an
error occurs. None is returned on success. On error, an exception is
raised, and there is no way to determine how much data, if any, was
successfully processed by the receiving end of the connection.
r r� Nr� )r r� rO r� rn rM rI rH �lenre r< rp r� �
_sock_sendall�
memoryviewr� r� r� �_sock_write_done)r! r) rD r� r� r rz r r r � sock_sendall� s* �
�
��
z"BaseSelectorEventLoop.sock_sendallc
C s� |� � rd S |d }z |�||d � �}W n, ttfy! Y d S ttfy* � tyA } z |�|� W Y d }~d S d }~ww ||7 }|t|�krS|� d � d S ||d< d S )Nr )
r� rM rI rH rg rh rf r� r� r� )r! r� r) Zview�pos�startr� rc r r r r� � s$
�� z#BaseSelectorEventLoop._sock_sendallc � s� �t �|� | jr|�� dkrtd��|jtjks"t jr;|jtj kr;| j
||j|j |j | d�I dH }|d \}}}}}| �
� }| �|||� z|I dH W d}S d}w )zTConnect to a remote socket at address.
This method is a coroutine.
r r� )�family�type�proto�loopN)r r� rO r� rn r� r? ZAF_INETZ _HAS_IPv6ZAF_INET6Z_ensure_resolvedr� r� re �
_sock_connect)r! r) r3 Zresolvedr` r� r r r � sock_connect� s$ �
� �
z"BaseSelectorEventLoop.sock_connectc
C s� |� � }zaz|�|� W nE ttfy2 | �|� | �|| j|||�}|�tj | j
||d�� Y n* t t fy; � t
yQ } z |�|� W Y d }~nd }~ww |�d � W d }d S W d }d S W d }d S d }w )Nr� )r< ZconnectrI rH rp r� �_sock_connect_cbr� r� r� r� rg rh rf r� r� )r! r� r) r3 r rz rc r r r r� � s.
���� � �z#BaseSelectorEventLoop._sock_connectc C r� r' )r� r� r� r r r r� r� z&BaseSelectorEventLoop._sock_write_donec
C s� |� � rd S zUz|�tjtj�}|dkr t|d|� ���W n* ttfy( Y n* tt fy1 � t
yG } z |� |� W Y d }~nd }~ww |� d � W d }d S W d }d S W d }d S d }w )Nr zConnect call failed )
r� Z
getsockoptr? Z
SOL_SOCKETZSO_ERRORrN rI rH rg rh rf r� r� )r! r� r) r3 �errrc r r r r� s* ��� ��z&BaseSelectorEventLoop._sock_connect_cbc � sD �t �|� | jr|�� dkrtd��| �� }| �||� |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� rO r� rn re � _sock_accept)r! r) r� r r r � sock_accept* s �
z!BaseSelectorEventLoop.sock_acceptc
C s� |� � }z
|�� \}}|�d� W nF ttfy7 | �|� | �|| j||�}|�t j
| j ||d�� Y d S t t
fy@ � tyW } z |�|� W Y d }~d S d }~ww |�||f� d S )NFr� )r< rZ r@ rI rH rp rA r� r� r� r� r� rg rh rf r� r� )r! r� r) r ra r3 rz rc r r r r� 9 s"
���z"BaseSelectorEventLoop._sock_acceptc � s� �| j |j= |�� }|�� |�� I d H z | j|j|||dd�I d H W |�� |r.|�� || j |j< S |�� |r?|�� || j |j< w )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_nativeJ s" �
��z&BaseSelectorEventLoop._sendfile_nativec C s� |D ];\}}|j |j}\}}|tj@ r&|d ur&|jr!| �|� n| �|� |tj@ r=|d ur=|jr8| �|� q| �|� qd S r' ) �fileobjrD r rt Z
_cancelledr: Z
_add_callbackr� r� )r! Z
event_listr r{ r� r| r} r r r �_process_eventsX s
��z%BaseSelectorEventLoop._process_eventsc C s | � |�� � |�� d S r' )r: r< r8 )r! r) r r r �
_stop_servingf s z#BaseSelectorEventLoop._stop_servingr' �NNN)-r �
__module__� __qualname__�__doc__r r, r ZSSL_HANDSHAKE_TIMEOUTr1 r4 r8 r7 r rE rB rP rU rR r_ rp rA 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 + sl
�� �
�
�
�.
�)
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 ty& d | jd< Y nw d| jvrEz |�� | jd< W n tj yD d | jd< Y nw || _
|� � | _ d| _
| �|� || _| �� | _d| _d| _| jd urm| j�� | |j| j < d S )Nr? ZsocknamerX Fr )r r r r^ �_extraZ getsocknamerN 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 w s0 �
�
z_SelectorTransport.__init__c C s� | j jg}| jd u r|�d� n| jr|�d� |�d| j� �� | jd urc| j�� sct| jj | jt
j �}|r=|�d� n|�d� t| jj | jt
j �}|rQd}nd}| �
� }|�d|� d |� d
�� d �d �|��S )
N�closed�closingzfd=z read=pollingz read=idle�pollingZidlezwrite=<z
, bufsize=�>z<{}>� )r r r� �appendr� r� �_loopr6 r r r rt 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_closer9 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 � | j S r' )r� r9 r r r � get_protocol� � z _SelectorTransport.get_protocolc C r� r' )r� r9 r r r ro � r� z _SelectorTransport.is_closingc C sX | j rd S d| _ | j�| j� | js*| jd7 _| j�| j� | j�| jd � d S d S �NTr ) r� r� r: r� r� r� r� � call_soon�_call_connection_lostr9 r r r r8 � s �z_SelectorTransport.closec C s0 | j d ur|d| ��t| d� | j �� d S d S )Nzunclosed transport )�source)r� �ResourceWarningr8 )r! Z_warnr r r �__del__� s
�z_SelectorTransport.__del__�Fatal error on transportc C sN t |t�r| j�� rtjd| |dd� n | j�||| | jd�� | �|� d S )Nz%r: %sTrK )rV rW rd r* ) rj rN r� � get_debugr r r] r� r� )r! rc rV r r r � _fatal_error� s
��z _SelectorTransport._fatal_errorc C sd | j rd S | jr| j�� | j�| j� | js!d| _| j�| j� | j d7 _ | j�| j |� d S r� )
r� r� �clearr� r� r� r� r: r� r� �r! rc r r r r� � s
z _SelectorTransport._force_closec C s� z*| j r
| j�|� W | j�� d | _d | _d | _| j}|d ur)|�� d | _d S d S | j�� d | _d | _d | _| j}|d urG|�� d | _w r' )r� r� Zconnection_lostr� r8 r� r� Z_detach)r! rc r% r r r r� � s* �
�
�z(_SelectorTransport._call_connection_lostc C s
t | j�S r' )r� r� r9 r r r r� � �
z(_SelectorTransport.get_write_buffer_sizec G s$ | j rd S | jj||g|�R � d S r' )r� r� rA r� r r r rA � s z _SelectorTransport._add_reader)NN)r� )r r� r� �max_size� bytearrayr� r� r r� r� r� r� ro r8 �warnings�warnr� r� r� r� r� rA r� r r r" r r� k s"
r� c s� e Zd ZdZejjZ d#� 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 )$r( TNc s� d | _ t� �|||||� d| _d| _d | _t�| j� | j �
| j j | � | j �
| j
| j| j� |d ur?| j �
tj|d � d S d S r
)�_read_ready_cbr r �_eof�_paused�
_empty_waiterr Z _set_nodelayr� r� r� r� �connection_maderA r� � _read_readyr � _set_result_unless_cancelled)r! r� r) r* r+ r$ r% r" r r r s
�
��z!_SelectorSocketTransport.__init__c s. t |tj�r | j| _n| j| _t� �|� d S r' )rj 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� r9 r r r r� s z#_SelectorSocketTransport.is_readingc C sB | j s| jrd S d| _| j�| j� | j�� r t�d| � d S d S )NTz%r pauses reading)r� r� r� r: r� r� r r r9 r r r r� " s
�z&_SelectorSocketTransport.pause_readingc C sD | j s| jsd S d| _| �| j| j� | j�� r t�d| � d S d S )NFz%r resumes reading) r� r� rA r� r r� r� r r r9 r r r r� * s
�z'_SelectorSocketTransport.resume_readingc C s | � � d S r' )r� r9 r r r r 2 s z$_SelectorSocketTransport._read_readyc
C sD | j rd S z| j�d�}t|�std��W n" ttfy � ty7 } z
| �|d� W Y d }~d S d }~ww z| j �
|�}W n- t t fyL Y d S ttfyU � tym } z
| �|d� W Y d }~d S d }~ww |sv| �
� d S z | j�|� W d S ttfy� � ty� } z
| �|d� W Y d }~d S d }~ww )N���z%get_buffer() returned an empty bufferz/Fatal error: protocol.get_buffer() call failed.�$Fatal read error on socket transportz3Fatal error: protocol.buffer_updated() call failed.)r� r� Z
get_bufferr� r5 rg rh rf r� r� r� rI rH �_read_ready__on_eofZbuffer_updated)r! r� rc r� r r r r 5 sP ���� �����z0_SelectorSocketTransport._read_ready__get_bufferc
C s� | j rd S z | j�| j�}W n- ttfy Y d S ttfy# � ty; } z
| � |d� W Y d }~d S d }~ww |sD| �
� d S z | j � |� W d S ttfyW � tyo } z
| � |d� W Y d }~d S d }~ww )Nr z2Fatal error: protocol.data_received() call failed.)
r� r� rG r� rI rH rg rh rf r� r r� Z
data_received)r! rD rc r r r r Z s4 �����z3_SelectorSocketTransport._read_ready__data_receivedc
C s� | j �� r t�d| � z| j�� }W n" ttfy � ty4 } z
| � |d� W Y d }~d S d }~ww |r@| j �
| j � d S | � � d S )Nz%r received EOFz1Fatal error: protocol.eof_received() call failed.)
r� r� r r r� Z eof_receivedrg rh rf r� r: r� r8 )r! Z keep_openrc r r r r s s
��� z,_SelectorSocketTransport._read_ready__on_eofc
C s( t |tttf�stdt|�j����| jrtd��| j d ur"td��|s&d S | j
r=| j
t j kr4t
�d� | j
d7 _
d S | js�z| j�|�}W n, ttfyS Y n, ttfy\ � tyt } z
| �|d� W Y d }~d S d }~ww ||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) rj �bytesr� r� rm r� r r� r5 r r� r �!LOG_THRESHOLD_FOR_CONNLOST_WRITESr �warningr� r� rM rI rH rg rh rf r� r� r� r� � _write_ready�extend�_maybe_pause_protocol)r! rD r� rc r r r �write� sB �
�� z _SelectorSocketTransport.writec
C s* | j rd S z | j�| j�}W nK ttfy Y d S ttfy# � tyY } z+| j �
| j � | j� � | �
|d� | jd urN| j�|� W Y d }~d S W Y d }~d S d }~ww |rb| jd |�= | �� | js�| j �
| j � | jd ur{| j�d � | jr�| �d � d S | jr�| j�tj� d S d S d S )Nr )r� r� rM r� rI rH rg rh rf r� r� r� r� r� r r� �_maybe_resume_protocolr� r� r� r� �shutdownr? �SHUT_WR)r! r� rc r r r r � s<
���
�z%_SelectorSocketTransport._write_readyc C s2 | j s| jrd S d| _| js| j�tj� d S d S r� )r� r� r� r� r r? r r9 r r r � write_eof� s �z"_SelectorSocketTransport.write_eofc C s dS r� r r9 r r r �
can_write_eof� rF z&_SelectorSocketTransport.can_write_eofc s. t � �|� | jd ur| j�td�� d S 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 ur td��| j�� | _ | js| j �d � | j S )NzEmpty waiter is already set)r r5 r� re r� r� r9 r r r r� � s
z+_SelectorSocketTransport._make_empty_waiterc C s
d | _ d S r' )r r9 r r r r� � r� z,_SelectorSocketTransport._reset_empty_waiterr� )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 sJ e Zd ZejZ d � fdd� Zdd� Zdd� Zd
dd �Z d
d � Z
� Z S )r2 Nc sb t � �||||� || _| j�| jj| � | j�| j| j| j � |d ur/| j�t
j |d � d S d S r' ) r r �_addressr� r� r� r rA r� r r r )r! r� r) r* r3 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� )�.0rD r` r r r � <genexpr>� s � zC_SelectorDatagramTransport.get_write_buffer_size.<locals>.<genexpr>)�sumr� r9 r r r r� � s z0_SelectorDatagramTransport.get_write_buffer_sizec
C s� | j rd S z | j�| j�\}}W nE ttfy Y d S ty4 } z
| j�|� W Y d }~d S d }~w t t
fy= � t yU } z
| � |d� W Y d }~d S d }~ww | j�
||� d S )Nz&Fatal read error on datagram transport)r� r� Zrecvfromr� rI rH rN r� �error_receivedrg rh rf r� Zdatagram_received�r! rD rb rc r r r r � s ���z&_SelectorDatagramTransport._read_readyc
C s| t |tttf�stdt|�j����|sd S | jr+|d | jfvr(td| j� ���| j}| j rE| jrE| j t
j kr<t �
d� | j d7 _ d S | js�z| jd rW| j�|� W d S | j�||� W d S ttfyt | j�| j| j� Y n: ty� } z
| j�|� W Y d }~d S d }~w t t fy� � t y� } z
| � |d� W Y d }~d S d }~ww | j� t|�|f� | �!� d S )Nr z!Invalid address: must be None or r
r rX �'Fatal write error on datagram transport)"rj r r� r� rm r� r r rn r� r r
r r r� r� r� rM �sendtorI rH r� r� r� �
_sendto_readyrN r� r rg rh rf r� r� r r r r r r
sR �
�
� ���� z!_SelectorDatagramTransport.sendtoc
C s | j ro| j �� \}}z| jd r| j�|� n| j�||� W nL ttfy2 | j �||f� Y n= t yJ } z
| j
� |� W Y d }~d S d }~w t t
fyS � tyk } z
| �|d� W Y d }~d S d }~ww | j s| �� | j s�| j�| j� | jr�| �d � d S d S d S )NrX r )r� �popleftr� r� rM r rI rH �
appendleftrN r� r rg rh rf r� r r� r� r� r� r� r r r r r! 8 s>
� ������z(_SelectorDatagramTransport._sendto_readyr� r' ) r r� r� � collections�dequer� r r� r r r! r� r r r" r r2 � s �
+r2 ) r� �__all__r$ r\ r� r r? r� r Zssl� ImportError� r r r r r r r
r �logr r Z
BaseEventLoopr Z_FlowControlMixinZ Transportr� r( r2 r r r r �<module> sH � D� o