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dd d ZG d d d e jZG d d dee jZG d d dZG d!d dZd S )'zStream-related things. StreamReader StreamWriterStreamReaderProtocolopen_connection start_serverIncompleteReadErrorLimitOverrunError NZAF_UNIXopen_unix_connectionstart_unix_server )
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Incomplete read error. Attributes:
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c s( t jdt||f || _|| _d S )Nz-%d bytes read on a total of %r expected bytes)super__init__lenpartialexpected)selfr r ) __class__ '/usr/lib64/python3.6/asyncio/streams.pyr s z IncompleteReadError.__init__c C s t | | j| jffS )N)typer r )r r r r
__reduce__& s z IncompleteReadError.__reduce__)__name__
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__classcell__r r )r r r s c s( e Zd ZdZ fddZdd Z ZS )r zReached the buffer limit while looking for a separator.
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c s t j| || _d S )N)r r consumed)r messager$ )r r r r 0 s zLimitOverrunError.__init__c C s t | | jd | jffS )Nr )r argsr$ )r r r r r 4 s z LimitOverrunError.__reduce__)r r r! r" r r r# r r )r r r * s )looplimitc + sb |dkrt j }t||d}t||d |j fdd| |f|E dH \}}t| ||}||fS )a A wrapper for create_connection() returning a (reader, writer) pair.
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with various optional keyword arguments following.
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instance to use) and limit (to set the buffer limit passed to the
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N)r( r' )r' c s S )Nr r )protocolr r <lambda>Q s z!open_connection.<locals>.<lambda>)r get_event_loopr r Zcreate_connectionr ) hostportr' r( kwdsreader transport_writerr )r) r r 8 s c + s8 dkrt j fdd}j|||f|E dH S )a Start a socket server, call back for each client connected.
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Task.
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loop.create_server() except protocol_factory; most common are
positional host and port, with various optional keyword arguments
following. The return value is the same as loop.create_server().
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Nc s t d} t| d}|S )N)r( r' )r' )r r )r/ r) )client_connected_cbr( r' r r factoryq s z start_server.<locals>.factory)r r+ Z
create_server)r3 r, r- r' r( r. r4 r )r3 r( r' r r V s c + s` |dkrt j }t||d}t||d |j fdd| f|E dH \}}t| ||}||fS )z@Similar to `open_connection` but works with UNIX Domain Sockets.N)r( r' )r' c s S )Nr r )r) r r r* s z&open_unix_connection.<locals>.<lambda>)r r+ r r Zcreate_unix_connectionr )pathr' r( r. r/ r0 r1 r2 r )r) r r } s c + s6 dkrt j fdd}j||f|E dH S )z=Similar to `start_server` but works with UNIX Domain Sockets.Nc s t d} t| d}|S )N)r( r' )r' )r r )r/ r) )r3 r( r' r r r4 s z"start_unix_server.<locals>.factory)r r+ Zcreate_unix_server)r3 r5 r' r( r. r4 r )r3 r( r' r r
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Nc C s0 |d krt j | _n|| _d| _d | _d| _d S )NF)r r+ _loop_paused
_drain_waiter_connection_lost)r r' r r r r s zFlowControlMixin.__init__c C s d| _ | jj r tjd| d S )NTz%r pauses writing)r8 r7 get_debugr debug)r r r r
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set_result)r waiterr r r resume_writing s
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set_exception)r excr@ r r r connection_lost s z FlowControlMixin.connection_lostc c s< | j rtd| jsd S | j}| jj }|| _|E d H d S )NzConnection lost)r: ConnectionResetErrorr8 r9 r7
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r r r! r" r r= rA rD r rG r r r r r6 s
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call inappropriate methods of the protocol.)
Nc s* t j|d || _d | _|| _d| _d S )N)r' F)r r _stream_reader_stream_writer_client_connected_cb _over_ssl)r Z
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z$StreamReaderProtocol.connection_madec sF | j d k r*|d kr | j j n | j j| t j| d | _ d | _d S )N)rH feed_eofrB r rD rI )r rC )r r r rD s
z$StreamReaderProtocol.connection_lostc C s | j j| d S )N)rH feed_data)r datar r r
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edd ZdS )r a' Wraps a Transport.
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optional Future on which you can wait for flow control. It also
adds a transport property which references the Transport
directly.
c C s || _ || _|| _|| _d S )N)
_transport _protocol_readerr7 )r r0 r) r/ r' r r r r s zStreamWriter.__init__c C s: | j jd| j g}| jd k r,|jd| j ddj| S )Nz transport=%rz reader=%rz<%s> )r r rU rW appendjoin)r infor r r __repr__! s
zStreamWriter.__repr__c C s | j S )N)rU )r r r r r0 ' s zStreamWriter.transportc C s | j j| d S )N)rU write)r rR r r r r] + s zStreamWriter.writec C s | j j| d S )N)rU
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| j j S )N)rU close)r r r r ra 7 s zStreamWriter.closeNc C s | j j||S )N)rU rM )r namedefaultr r r rM : s zStreamWriter.get_extra_infoc c sN | j dk r | j j }|dk r || jdk r:| jj r:dV | jj E dH dS )z~Flush the write buffer.
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_exceptionrU r8 )r r( r' r r r r X s zStreamReader.__init__c C s dg}| j r |jdt| j | jr0|jd | jtkrJ|jd| j | jr`|jd| j | jrv|jd| j | jr|jd| j | j r|jd d d
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zStreamReader.__repr__c C s | j S )N)rm )r r r r rd } s zStreamReader.exceptionc C s0 || _ | j}|d k r,d | _|j s,|j| d S )N)rm rl cancelledrB )r rC r@ r r r rB s zStreamReader.set_exceptionc C s* | j }|dk r&d| _ |j s&|jd dS )z1Wakeup read*() functions waiting for data or EOF.N)rl rp r? )r r@ r r r _wakeup_waiter s
zStreamReader._wakeup_waiterc C s
|| _ d S )N)rU )r r0 r r r rL s zStreamReader.set_transportc C s* | j r&t| j| jkr&d| _ | jj d S )NF)r8 r rj rh rU resume_reading)r r r r _maybe_resume_transport s z$StreamReader._maybe_resume_transportc C s d| _ | j d S )NT)rk rq )r r r r rP s zStreamReader.feed_eofc C s | j o | j S )z=Return True if the buffer is empty and 'feed_eof' was called.)rk rj )r r r r at_eof s zStreamReader.at_eofc C sv |sd S | j j| | j | jd k rr| j rrt| j d| j krry| jj W n tk
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zStreamReader.feed_datac c sV | j dk rtd| | jr,d| _| jj | jj | _ z| j E dH W dd| _ X dS )zpWait until feed_data() or feed_eof() is called.
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NzH%s() called while another coroutine is already waiting for incoming dataF)rl RuntimeErrorr8 rU rr r7 rF )r Z func_namer r r _wait_for_data s
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| jj | j t
|j d W Y dd}~X nX |S )a Read chunk of data from the stream until newline (b'
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line can be read due to EOF, return incomplete line without
terminating newline. When EOF was reached while no bytes read, empty
bytes object is returned.
If limit is reached, ValueError will be raised. In that case, if
newline was found, complete line including newline will be removed
from internal buffer. Else, internal buffer will be cleared. Limit is
compared against part of the line without newline.
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needed.
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internal buffer (consumed). Returned data will include the
separator at the end.
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maximal length of data that can be returned, not counting the
separator.
If an EOF occurs and the complete separator is still not found,
an IncompleteReadError exception will be raised, and the internal
buffer will be reset. The IncompleteReadError.partial attribute
may contain the separator partially.
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will be left in the internal buffer, so it can be read again.
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zStreamReader.readuntilr c c s | j dk r| j |dkr dS |dk rZg }x&| j| jE dH }|sBP |j| q*W dj|S | j rz| j rz| jdE dH t| jd| }| jd|= | j |S )a Read up to `n` bytes from the stream.
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bytes. If the EOF was received and the internal buffer is empty, return
an empty bytes object.
If n is zero, return empty bytes object immediately.
If n is positive, this function try to read `n` bytes, and may return
less or equal bytes than requested, but at least one byte. If EOF was
received before any byte is read, this function returns empty byte
object.
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creation.
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needed.
Nr read)
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zStreamReader.readc c s |dk rt d| jdk r | j|dkr,dS xFt| j|k rr| jr`t| j}| jj t||| jdE dH q.W t| j|krt| j}| jj n t| jd| }| jd|= | j |S )a Read exactly `n` bytes.
Raise an IncompleteReadError if EOF is reached before `n` bytes can be
read. The IncompleteReadError.partial attribute of the exception will
contain the partial read bytes.
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creation.
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needed.
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zStreamReader.readexactlyc C s | S )Nr )r r r r __aiter__ s zStreamReader.__aiter__c c s | j E d H }|dkrt|S )Nr )r StopAsyncIteration)r valr r r __anext__ s zStreamReader.__anext__c C s | S )Nr )r r r r r s )ry r )r )r r r! ro r r\ rd rB rq rL rs rP rt rQ r rx r rz r r r
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