
\[\Ӎ                 @   sd  d  Z  d g Z d d l Z d d l Z d d l Z d d l Z y d d l Z Wn e k
 ri d Z Yn Xd d l m	 Z	 d d l m
 Z
 d d l m Z d d l m Z d d	 l m Z d d
 l m Z d d l m Z d d   Z Gd d   d e	 j  Z Gd d   d e j e j  Z Gd d   d e  Z Gd d   d e  Z Gd d   d e  Z d S)zEvent 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)	selectors)
transports)loggerc             C   sA   y |  j  |  } Wn t k
 r+ d SYn Xt | j | @ Sd  S)NF)get_keyKeyErrorboolr   )selectorfdZeventkey r   -/usr/lib/python3.4/asyncio/selector_events.py_test_selector_event   s
    	r   c            
       s  e  Z d  Z d Z d   f d d  Z d d d d d d d Z d	 d
 d d d d d d d d  Z d d d d d  Z   f d d   Z d d   Z	 d d   Z
 d d   Z d d   Z d d   Z d d   Z d d d d  Z d d d  d!  Z d" d#   Z d$ d%   Z d& d'   Z d( d)   Z d* d+   Z d, d-   Z d. d/   Z d0 d1   Z d2 d3   Z d4 d5   Z d6 d7   Z d8 d9   Z d: d;   Z d< d=   Z d> d?   Z d@ dA   Z    S)Br   zJSelector event loop.

    See events.EventLoop for API specification.
    Nc                sU   t    j   | d  k r( t j   } n  t j d | j j  | |  _ |  j	   d  S)NzUsing selector: %s)
super__init__r   ZDefaultSelectorr
   debug	__class____name__	_selector_make_self_pipe)selfr   )r   r   r   r   ,   s    	zBaseSelectorEventLoop.__init__extraserverc            C   s   t  |  | | | | |  S)N)_SelectorSocketTransport)r   sockprotocolwaiterr   r   r   r   r   _make_socket_transport5   s    z,BaseSelectorEventLoop._make_socket_transportserver_sideFserver_hostnamec      	   
   C   s"   t  |  | | | | | | | | 	 S)N)_SelectorSslTransport)	r   rawsockr    
sslcontextr!   r#   r$   r   r   r   r   r   _make_ssl_transport:   s    z)BaseSelectorEventLoop._make_ssl_transportc             C   s   t  |  | | | | |  S)N)_SelectorDatagramTransport)r   r   r    addressr!   r   r   r   r   _make_datagram_transportA   s    z.BaseSelectorEventLoop._make_datagram_transportc                sS   |  j    r d  St   j   |  j   |  j d  k	 rO |  j j   d  |  _ n  d  S)N)	is_closedr   close_close_self_piper   )r   )r   r   r   r-   F   s    
zBaseSelectorEventLoop.closec             C   s
   t   d  S)N)NotImplementedError)r   r   r   r   _socketpairO   s    z!BaseSelectorEventLoop._socketpairc             C   sU   |  j  |  j j    |  j j   d  |  _ |  j j   d  |  _ |  j d 8_ d  S)Nr   )remove_reader_ssockfilenor-   _csock_internal_fds)r   r   r   r   r.   R   s    		z&BaseSelectorEventLoop._close_self_pipec             C   sg   |  j    \ |  _ |  _ |  j j d  |  j j d  |  j d 7_ |  j |  j j   |  j  d  S)NFr   )r0   r2   r4   setblockingr5   
add_readerr3   _read_from_self)r   r   r   r   r   Z   s
    z%BaseSelectorEventLoop._make_self_pipec             C   s   d  S)Nr   )r   datar   r   r   _process_self_datab   s    z(BaseSelectorEventLoop._process_self_datac             C   sa   xZ y- |  j  j d  } | s" Pn  |  j |  Wq t k
 rG w Yq t k
 rY PYq Xq d  S)Ni   )r2   recvr:   InterruptedErrorBlockingIOError)r   r9   r   r   r   r8   e   s    z%BaseSelectorEventLoop._read_from_selfc             C   sa   |  j  } | d  k	 r] y | j d  Wq] t k
 rY |  j rU t j d d d n  Yq] Xn  d  S)Ns    z3Fail to write a null byte into the self-pipe socketexc_infoT)r4   sendOSError_debugr
   r   )r   Zcsockr   r   r   _write_to_selfq   s    		z$BaseSelectorEventLoop._write_to_selfc             C   s)   |  j  | j   |  j | | | |  d  S)N)r7   r3   _accept_connection)r   protocol_factoryr   r'   r   r   r   r   _start_serving   s    z$BaseSelectorEventLoop._start_servingc             C   sp  yE | j    \ } } |  j r7 t j d | | |  n  | j d  Wn t t t f k
 rb Yn
t k
 r
} z | j	 t	 j
 t	 j t	 j t	 j f k r |  j i d d 6| d 6| d 6 |  j | j    |  j t j |  j | | | |  n   WYd  d  } ~ Xnb X| rF|  j | |   | d  d d d	 i | d
 6d | n& |  j | |   d	 i | d
 6d | d  S)Nz#%r got a new connection from %r: %rFz&socket.accept() out of system resourcemessage	exceptionsocketr#   Tr   peernamer   )acceptrA   r
   r   r6   r=   r<   ConnectionAbortedErrorr@   errnoZEMFILEZENFILEZENOBUFSZENOMEMcall_exception_handlerr1   r3   Z
call_laterr   ZACCEPT_RETRY_DELAYrE   r(   r"   )r   rD   r   r'   r   connaddrexcr   r   r   rC      s6    			z(BaseSelectorEventLoop._accept_connectionc       	      G   s   |  j    t j | | |   } y |  j j |  } Wn1 t k
 rh |  j j | t j | d f  YnV X| j | j	 } \ } } |  j j
 | | t j B| | f  | d k	 r | j   n  d S)zAdd a reader callback.N)_check_closedr   Handler   r   r   registerr   
EVENT_READr9   modifycancel)	r   r   callbackargshandler   maskreaderwriterr   r   r   r7      s    
z BaseSelectorEventLoop.add_readerc             C   s   |  j    r d Sy |  j j |  } Wn t k
 r> d SYn{ X| j | j } \ } } | t j M} | s |  j j |  n |  j j	 | | d | f  | d k	 r | j
   d Sd Sd S)zRemove a reader callback.FNT)r,   r   r   r   r   r9   r   rT   
unregisterrU   rV   )r   r   r   rZ   r[   r\   r   r   r   r1      s    	
z#BaseSelectorEventLoop.remove_readerc       	      G   s   |  j    t j | | |   } y |  j j |  } Wn1 t k
 rh |  j j | t j d | f  YnV X| j | j	 } \ } } |  j j
 | | t j B| | f  | d k	 r | j   n  d S)zAdd a writer callback..N)rQ   r   rR   r   r   r   rS   r   EVENT_WRITEr9   rU   rV   )	r   r   rW   rX   rY   r   rZ   r[   r\   r   r   r   
add_writer   s    
z BaseSelectorEventLoop.add_writerc             C   s   |  j    r d Sy |  j j |  } Wn t k
 r> d SYn{ X| j | j } \ } } | t j M} | s |  j j |  n |  j j	 | | | d f  | d k	 r | j
   d Sd Sd S)zRemove a writer callback.FNT)r,   r   r   r   r   r9   r   r^   r]   rU   rV   )r   r   r   rZ   r[   r\   r   r   r   remove_writer   s    	
z#BaseSelectorEventLoop.remove_writerc             C   sY   |  j    r- | j   d k r- t d   n  t j d |   } |  j | d | |  | S)zReceive 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.

        This method is a coroutine.
        r   zthe socket must be non-blockingloopF)	get_debug
gettimeout
ValueErrorr   Future
_sock_recv)r   r   nfutr   r   r   	sock_recv   s
    	zBaseSelectorEventLoop.sock_recvc             C   s   | j    } | r" |  j |  n  | j   r2 d  Sy | j |  } Wnh t t f k
 r~ |  j | |  j | d | |  Yn? t k
 r } z | j	 |  WYd  d  } ~ Xn X| j
 |  d  S)NT)r3   r1   	cancelledr;   r=   r<   r7   rf   	Exceptionset_exception
set_result)r   rh   
registeredr   rg   r   r9   rP   r   r   r   rf   
  s    # z BaseSelectorEventLoop._sock_recvc             C   so   |  j    r- | j   d k r- t d   n  t j d |   } | r^ |  j | d | |  n | j d  | 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.

        This method is a coroutine.
        r   zthe socket must be non-blockingra   FN)rb   rc   rd   r   re   _sock_sendallrm   )r   r   r9   rh   r   r   r   sock_sendall  s    z"BaseSelectorEventLoop.sock_sendallc             C   s   | j    } | r" |  j |  n  | j   r2 d  Sy | j |  } WnS t t f k
 re d } Yn6 t k
 r } z | j |  d  SWYd  d  } ~ Xn X| t |  k r | j	 d   n8 | r | | d   } n  |  j
 | |  j | d | |  d  S)Nr   T)r3   r`   rj   r?   r=   r<   rk   rl   lenrm   r_   ro   )r   rh   rn   r   r9   r   rg   rP   r   r   r   ro   3  s"    
z#BaseSelectorEventLoop._sock_sendallc             C   s   |  j    r- | j   d k r- t d   n  t j d |   } y t j | |  Wn2 t k
 r } z | j |  WYd d } ~ Xn X|  j | | |  | S)a  Connect to a remote socket at address.

        The address must be already resolved to avoid the trap of hanging the
        entire event loop when the address requires doing a DNS lookup. For
        example, it must be an IP address, not an hostname, for AF_INET and
        AF_INET6 address families. Use getaddrinfo() to resolve the hostname
        asynchronously.

        This method is a coroutine.
        r   zthe socket must be non-blockingra   N)	rb   rc   rd   r   re   r   Z_check_resolved_addressrl   _sock_connect)r   r   r*   rh   errr   r   r   sock_connectJ  s     z"BaseSelectorEventLoop.sock_connectc             C   s   | j    } y4 x- y | j |  Wn t k
 r: w Yq XPq Wn{ t k
 r | j t j |  j |   |  j | |  j	 | | |  Yn? t
 k
 r } z | j |  WYd  d  } ~ Xn X| j d   d  S)N)r3   Zconnectr<   r=   Zadd_done_callback	functoolspartial_sock_connect_doner_   _sock_connect_cbrk   rl   rm   )r   rh   r   r*   r   rP   r   r   r   rr   `  s    
  z#BaseSelectorEventLoop._sock_connectc             C   s   |  j  | j    d  S)N)r`   r3   )r   r   rh   r   r   r   rw   s  s    z(BaseSelectorEventLoop._sock_connect_donec             C   s   | j    r d  SyA | j t j t j  } | d k rP t | d | f   n  WnI t t f k
 rk Yn? t k
 r } z | j	 |  WYd  d  } ~ Xn X| j
 d   d  S)Nr   zConnect call failed %s)rj   Z
getsockoptrH   Z
SOL_SOCKETZSO_ERRORr@   r=   r<   rk   rl   rm   )r   rh   r   r*   rs   rP   r   r   r   rx   v  s     z&BaseSelectorEventLoop._sock_connect_cbc             C   sV   |  j    r- | j   d k r- t d   n  t j d |   } |  j | d |  | S)a|  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.

        This method is a coroutine.
        r   zthe socket must be non-blockingra   F)rb   rc   rd   r   re   _sock_accept)r   r   rh   r   r   r   sock_accept  s
    
z!BaseSelectorEventLoop.sock_acceptc             C   s   | j    } | r" |  j |  n  | j   r2 d  Sy# | j   \ } } | j d  Wne t t f k
 r |  j | |  j | d |  YnE t	 k
 r } z | j
 |  WYd  d  } ~ Xn X| j | | f  d  S)NFT)r3   r1   rj   rJ   r6   r=   r<   r7   ry   rk   rl   rm   )r   rh   rn   r   r   rN   r*   rP   r   r   r   ry     s      z"BaseSelectorEventLoop._sock_acceptc             C   s   x | D] \ } } | j  | j } \ } } | t j @rn | d  k	 rn | j r^ |  j |  qn |  j |  n  | t j @r | d  k	 r | j r |  j |  q |  j |  q q Wd  S)N)	fileobjr9   r   rT   Z
_cancelledr1   Z_add_callbackr^   r`   )r   Z
event_listr   rZ   r{   r[   r\   r   r   r   _process_events  s    		z%BaseSelectorEventLoop._process_eventsc             C   s!   |  j  | j    | j   d  S)N)r1   r3   r-   )r   r   r   r   r   _stop_serving  s    z#BaseSelectorEventLoop._stop_serving)!r   
__module____qualname____doc__r   r"   r(   r+   r-   r0   r.   r   r:   r8   rB   rE   rC   r7   r1   r_   r`   ri   rf   rp   ro   rt   rr   rw   rx   rz   ry   r|   r}   r   r   )r   r   r   &   sB   		'c                   s   e  Z d  Z d Z e Z d   f d d  Z d d   Z d d	   Z d
 d   Z	 d d d  Z
 d d   Z d d   Z d d   Z   S)_SelectorTransport   i   Nc                s   t    j |  | |  j d <| j   |  j d <d |  j k r~ y | j   |  j d <Wq~ t j k
 rz d  |  j d <Yq~ Xn  | |  _ | |  _ | j	   |  _
 | |  _ | |  _ |  j   |  _ d |  _ d |  _ |  j d  k	 r |  j j   n  d  S)NrH   ZsocknamerI   r   F)r   r   _extraZgetsocknameZgetpeernamerH   error_loop_sockr3   _sock_fd	_protocol_server_buffer_factory_buffer
_conn_lost_closingZ_attach)r   ra   r   r    r   r   )r   r   r   r     s$    						z_SelectorTransport.__init__c             C   s   |  j  j d |  j g } |  j d  k	 r t |  j j |  j t j  } | r\ | j d  n | j d  t |  j j |  j t j	  } | r d } n d } |  j
   } | j d | | f  n  d d j |  S)	Nzfd=%szread=pollingz	read=idlepollingZidlezwrite=<%s, bufsize=%s>z<%s> )r   r   r   r   r   r   r   rT   appendr^   get_write_buffer_sizejoin)r   infor   statebufsizer   r   r   __repr__  s    	z_SelectorTransport.__repr__c             C   s   |  j  d   d  S)N)_force_close)r   r   r   r   abort  s    z_SelectorTransport.abortc             C   s^   |  j  r d  Sd |  _  |  j j |  j  |  j sZ |  j d 7_ |  j j |  j d   n  d  S)NTr   )r   r   r1   r   r   r   	call_soon_call_connection_lost)r   r   r   r   r-     s    			z_SelectorTransport.closezFatal error on transportc             C   s   t  | t t f  rC |  j j   rr t j d |  | d d qr n/ |  j j i | d 6| d 6|  d 6|  j d 6 |  j	 |  d  S)Nz%r: %sr>   TrF   rG   Z	transportr    )

isinstanceBrokenPipeErrorConnectionResetErrorr   rb   r
   r   rM   r   r   )r   rP   rF   r   r   r   _fatal_error  s    z_SelectorTransport._fatal_errorc             C   s   |  j  r d  S|  j r9 |  j j   |  j j |  j  n  |  j sa d |  _ |  j j |  j  n  |  j  d 7_  |  j j |  j	 |  d  S)NTr   )
r   r   clearr   r`   r   r   r1   r   r   )r   rP   r   r   r   r     s    				z_SelectorTransport._force_closec             C   so   z |  j  j |  Wd  |  j j   d  |  _ d  |  _  d  |  _ |  j } | d  k	 rj | j   d  |  _ n  Xd  S)N)r   Zconnection_lostr   r-   r   r   Z_detach)r   rP   r   r   r   r   r     s    				
z(_SelectorTransport._call_connection_lostc             C   s   t  |  j  S)N)rq   r   )r   r   r   r   r     s    z(_SelectorTransport.get_write_buffer_sizei   )r   r~   r   max_size	bytearrayr   r   r   r   r-   r   r   r   r   r   r   )r   r   r     s   	r   c                   s   e  Z d  Z d d d   f d d  Z d d   Z d d   Z d d	   Z d
 d   Z d d   Z d d   Z	 d d   Z
   S)r   Nc                s   t    j | | | | |  d |  _ d |  _ |  j j |  j |  j  |  j j |  j	 j
 |   | d  k	 r |  j j | j d   n  d  S)NF)r   r   _eof_pausedr   r7   r   _read_readyr   r   connection_made_set_result_unless_cancelled)r   ra   r   r    r!   r   r   )r   r   r   r   $  s    		z!_SelectorSocketTransport.__init__c             C   sr   |  j  r t d   n  |  j r0 t d   n  d |  _ |  j j |  j  |  j j   rn t j d |   n  d  S)Nz#Cannot pause_reading() when closingzAlready pausedTz%r pauses reading)	r   RuntimeErrorr   r   r1   r   rb   r
   r   )r   r   r   r   pause_reading0  s    			z&_SelectorSocketTransport.pause_readingc             C   sm   |  j  s t d   n  d |  _  |  j r. d  S|  j j |  j |  j  |  j j   ri t j	 d |   n  d  S)Nz
Not pausedFz%r resumes reading)
r   r   r   r   r7   r   r   rb   r
   r   )r   r   r   r   resume_reading:  s    			z'_SelectorSocketTransport.resume_readingc             C   s   y |  j  j |  j  } WnL t t f k
 r3 Yn t k
 rg } z |  j | d  WYd  d  } ~ Xnq X| r |  j j |  nW |  j	 j
   r t j d |   n  |  j j   } | r |  j	 j |  j  n
 |  j   d  S)Nz$Fatal read error on socket transportz%r received EOF)r   r;   r   r=   r<   rk   r   r   data_receivedr   rb   r
   r   eof_receivedr1   r   r-   )r   r9   rP   	keep_openr   r   r   r   D  s    #z$_SelectorSocketTransport._read_readyc             C   sV  t  | t t t f  s0 t d t |    n  |  j rH t d   n  | sR d  S|  j r |  j t	 j
 k r} t j d  n  |  j d 7_ d  S|  j s8y |  j j |  } WnP t t f k
 r YnS t k
 r} z |  j | d  d  SWYd  d  } ~ Xn X| | d   } | sd  S|  j j |  j |  j  n  |  j j |  |  j   d  S)Nz#data argument must be byte-ish (%r)z%Cannot call write() after write_eof()zsocket.send() raised exception.r   z%Fatal write error on socket transport)r   bytesr   
memoryview	TypeErrortyper   r   r   r   !LOG_THRESHOLD_FOR_CONNLOST_WRITESr
   warningr   r   r?   r=   r<   rk   r   r   r_   r   _write_readyextend_maybe_pause_protocol)r   r9   rg   rP   r   r   r   writeZ  s4    			z_SelectorSocketTransport.writec             C   s  |  j  s t d   y |  j j |  j   } Wnl t t f k
 rH Yn t k
 r } z5 |  j j |  j	  |  j  j
   |  j | d  WYd  d  } ~ Xn{ X| r |  j  d  |  =n  |  j   |  j  s|  j j |  j	  |  j r |  j d   q|  j r|  j j t j  qn  d  S)NzData should not be emptyz%Fatal write error on socket transport)r   AssertionErrorr   r?   r=   r<   rk   r   r`   r   r   r   _maybe_resume_protocolr   r   r   shutdownrH   SHUT_WR)r   rg   rP   r   r   r   r   }  s$    #
			z%_SelectorSocketTransport._write_readyc             C   s9   |  j  r d  Sd |  _  |  j s5 |  j j t j  n  d  S)NT)r   r   r   r   rH   r   )r   r   r   r   	write_eof  s
    			z"_SelectorSocketTransport.write_eofc             C   s   d S)NTr   )r   r   r   r   can_write_eof  s    z&_SelectorSocketTransport.can_write_eof)r   r~   r   r   r   r   r   r   r   r   r   r   r   )r   r   r   "  s   

#r   c                   s   e  Z d  Z e Z d d d d d   f d d  Z d d   Z d d   Z d	 d
   Z d d   Z	 d d   Z
 d d   Z d d   Z   S)r%   NFc
                s  t  d  k r t d   n  | r9 | s t d   q nv | s t t  d  rr t  j d t  j d t |   } q t  j t  j  } | j	 t  j
 O_	 | j   t  j | _ n  i | d 6d d 6}
 | r | r t  j r | |
 d	 <n  | j | |
  } t   j | | | | |	  | |  _ | |  _ | |  _ d |  _ |  j j d
 |  |  j j   r|t j d |   |  j j   } n d  } |  j |  d  S)Nzstdlib ssl module not availablez(Server side ssl needs a valid SSLContext_create_stdlib_contextZ	cert_reqscheck_hostnamer#   FZdo_handshake_on_connectr$   r'   z%r starts SSL handshake)sslr   rd   hasattrr   ZCERT_REQUIREDr   Z
SSLContextZPROTOCOL_SSLv23ZoptionsZOP_NO_SSLv2Zset_default_verify_pathsverify_modeZHAS_SNIZwrap_socketr   r   _server_hostname_waiter_sslcontextr   r   updater   rb   r
   r   time_on_handshake)r   ra   r&   r    r'   r!   r#   r$   r   r   Zwrap_kwargsZsslsock
start_time)r   r   r   r     s>    		

				z_SelectorSslTransport.__init__c          #   C   s  y |  j  j   Wn t j k
 rH |  j j |  j |  j |  d  SYn t j k
 r| |  j j	 |  j |  j |  d  SYn t
 k
 r3} z |  j j   r t j d |  d d n  |  j j |  j  |  j j |  j  |  j  j   |  j d  k	 r|  j j |  n  t | t  rd  S  WYd  d  } ~ Xn X|  j j |  j  |  j j |  j  |  j  j   } t |  j d  s9|  j r9|  j j t j k r9y t j | |  j  Wq6t k
 r2} z` |  j j   rt j d |  d d n  |  j  j   |  j d  k	 r|  j j |  n  d  SWYd  d  } ~ Xq6Xq9n  |  j j d | d |  j  j   d |  j  j    d	 |  _  d	 |  _! |  j j |  j |  j"  |  j j# |  j$ j% |   |  j d  k	 r|  j j# |  j j& d   n  |  j j   r|  j j'   | } t j( d
 |  | d  n  d  S)Nz%r: SSL handshake failedr>   Tr   z1%r: SSL handshake failed on matching the hostnamepeercertciphercompressionFz%r: SSL handshake took %.1f msg     @@))r   Zdo_handshaker   SSLWantReadErrorr   r7   r   r   SSLWantWriteErrorr_   BaseExceptionrb   r
   r   r1   r`   r-   r   rl   r   rk   Zgetpeercertr   r   r   r   Z	CERT_NONEZmatch_hostnamer   r   r   r   _read_wants_write_write_wants_readr   r   r   r   r   r   r   )r   r   rP   r   Zdtr   r   r   r     sf    					
z#_SelectorSslTransport._on_handshakec             C   sr   |  j  r t d   n  |  j r0 t d   n  d |  _ |  j j |  j  |  j j   rn t j d |   n  d  S)Nz#Cannot pause_reading() when closingzAlready pausedTz%r pauses reading)	r   r   r   r   r1   r   rb   r
   r   )r   r   r   r   r     s    			z#_SelectorSslTransport.pause_readingc             C   sm   |  j  s t d   n  d |  _  |  j r. d  S|  j j |  j |  j  |  j j   ri t j	 d |   n  d  S)Nz
Not pausedFz%r resumes reading)
r   r   r   r   r7   r   r   rb   r
   r   )r   r   r   r   r   &  s    			z$_SelectorSslTransport.resume_readingc             C   sq  |  j  rD d |  _  |  j   |  j rD |  j j |  j |  j  qD n  y |  j j |  j  } Wn t	 t
 t j f k
 r} Yn t j k
 r d |  _ |  j j |  j  |  j j |  j |  j  Yn t k
 r } z |  j | d  WYd  d  } ~ Xns X| r|  j j |  nY zK |  j j   r9t j d |   n  |  j j   } | r^t j d  n  Wd  |  j   Xd  S)NFTz!Fatal read error on SSL transportz%r received EOFz?returning true from eof_received() has no effect when using ssl)r   r   r   r   r_   r   r   r;   r   r=   r<   r   r   r   r   r1   rk   r   r   r   rb   r
   r   r   r   r-   )r   r9   rP   r   r   r   r   r   0  s0    		
		#z!_SelectorSslTransport._read_readyc             C   s  |  j  rM d |  _  |  j   |  j p+ |  j sM |  j j |  j |  j  qM n  |  j r@y |  j j	 |  j  } Wn t
 t t j f k
 r d } Yn t j k
 r d } |  j j |  j  d |  _ YnY t k
 r#} z9 |  j j |  j  |  j j   |  j | d  d  SWYd  d  } ~ Xn X| r@|  j d  |  =q@n  |  j   |  j s|  j j |  j  |  j r|  j d   qn  d  S)NFr   Tz"Fatal write error on SSL transport)r   r   r   r   r   r7   r   r   r   r?   r=   r<   r   r   r   r`   r   rk   r   r   r   r   )r   rg   rP   r   r   r   r   P  s4    		
	

		z"_SelectorSslTransport._write_readyc             C   s   t  | t t t f  s0 t d t |    n  | s: d  S|  j rx |  j t j k re t	 j
 d  n  |  j d 7_ d  S|  j s |  j j |  j |  j  n  |  j j |  |  j   d  S)Nz#data argument must be byte-ish (%r)zsocket.send() raised exception.r   )r   r   r   r   r   r   r   r   r   r
   r   r   r   r_   r   r   r   r   )r   r9   r   r   r   r   q  s    		z_SelectorSslTransport.writec             C   s   d S)NFr   )r   r   r   r   r     s    z#_SelectorSslTransport.can_write_eof)r   r~   r   r   r   r   r   r   r   r   r   r   r   r   r   )r   r   r%     s   1A
 !r%   c                   sg   e  Z d  Z e j Z d d d   f d d  Z d d   Z d d   Z d d d	  Z	 d
 d   Z
   S)r)   Nc                s}   t    j | | | |  | |  _ |  j j |  j |  j  |  j j |  j j	 |   | d  k	 ry |  j j | j
 d   n  d  S)N)r   r   _addressr   r7   r   r   r   r   r   r   )r   ra   r   r    r*   r!   r   )r   r   r   r     s    	z#_SelectorDatagramTransport.__init__c             C   s   t  d d   |  j D  S)Nc             s   s!   |  ] \ } } t  |  Vq d  S)N)rq   ).0r9   _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   y |  j  j |  j  \ } } Wn t t f k
 r9 Yn| t k
 rm } z |  j j |  WYd  d  } ~ XnH t k
 r } z |  j	 | d  WYd  d  } ~ Xn X|  j j
 | |  d  S)Nz&Fatal read error on datagram transport)r   Zrecvfromr   r=   r<   r@   r   error_receivedrk   r   Zdatagram_received)r   r9   rO   rP   r   r   r   r     s    "#z&_SelectorDatagramTransport._read_readyc             C   s  t  | t t t f  s0 t d t |    n  | s: d  S|  j rq | d  |  j f k rq t d |  j f   n  |  j r |  j r |  j t	 j
 k r t j d  n  |  j d 7_ d  S|  j sy7 |  j r |  j j |  n |  j j | |  d  SWqt t f k
 r+|  j j |  j |  j  Yqt k
 rc} z |  j j |  d  SWYd  d  } ~ Xqt k
 r} z |  j | d  d  SWYd  d  } ~ XqXn  |  j j t |  | f  |  j   d  S)Nz#data argument must be byte-ish (%r)z#Invalid address: must be None or %szsocket.send() raised exception.r   z'Fatal write error on datagram transport)r   r   r   r   r   r   r   rd   r   r   r   r
   r   r   r   r?   sendtor=   r<   r   r_   r   _sendto_readyr@   r   r   rk   r   r   r   )r   r9   rO   rP   r   r   r   r     s<    			z!_SelectorDatagramTransport.sendtoc             C   s@  x |  j  r |  j  j   \ } } y3 |  j r@ |  j j |  n |  j j | |  Wq t t f k
 r |  j  j | | f  PYq t	 k
 r } z |  j
 j |  d  SWYd  d  } ~ Xq t k
 r } z |  j | d  d  SWYd  d  } ~ Xq Xq W|  j   |  j  s<|  j j |  j  |  j r<|  j d   q<n  d  S)Nz'Fatal write error on datagram transport)r   popleftr   r   r?   r   r=   r<   
appendleftr@   r   r   rk   r   r   r   r`   r   r   r   )r   r9   rO   rP   r   r   r   r     s*    		
		z(_SelectorDatagramTransport._sendto_ready)r   r~   r   collectionsdequer   r   r   r   r   r   r   r   )r   r   r)     s   		'r)   )r   __all__r   rL   ru   rH   r   ImportError r   r   r   r   r   r	   logr
   r   ZBaseEventLoopr   Z_FlowControlMixinZ	Transportr   r   r%   r)   r   r   r   r   <module>   s0   	 g|