U e5d�(�@s|dZdZGdd�d�ZGdd�de�ZGdd�de�ZGdd �d ee�ZGd d�de�ZGdd �d e�ZGdd�de�ZdS)zAbstract Transport class.)� BaseTransport� ReadTransport�WriteTransport� Transport�DatagramTransport�SubprocessTransportc@sHeZdZdZdZddd�Zddd�Zdd �Zd d�Zdd �Z dd�Z dS)rzBase class for transports.��_extraNcCs|dkri}||_dS�Nr)�self�extra�r�*/usr/lib64/python3.8/asyncio/transports.py�__init__szBaseTransport.__init__cCs|j�||�S)z#Get optional transport information.)r�get)r �name�defaultrrr �get_extra_infoszBaseTransport.get_extra_infocCst�dS)z2Return True if the transport is closing or closed.N��NotImplementedError�r rrr � is_closingszBaseTransport.is_closingcCst�dS)aClose the transport. Buffered data will be flushed asynchronously. No more data will be received. After all buffered data is flushed, the protocol's connection_lost() method will (eventually) be called with None as its argument. Nrrrrr �closeszBaseTransport.closecCst�dS)zSet a new protocol.Nr)r �protocolrrr �set_protocol%szBaseTransport.set_protocolcCst�dS)zReturn the current protocol.Nrrrrr �get_protocol)szBaseTransport.get_protocol)N)N)�__name__� __module__�__qualname__�__doc__� __slots__rrrrrrrrrr r s rc@s,eZdZdZdZdd�Zdd�Zdd�Zd S) rz#Interface for read-only transports.rcCst�dS)z*Return True if the transport is receiving.Nrrrrr � is_reading3szReadTransport.is_readingcCst�dS)z�Pause the receiving end. No data will be passed to the protocol's data_received() method until resume_reading() is called. Nrrrrr � pause_reading7szReadTransport.pause_readingcCst�dS)z�Resume the receiving end. Data received will once again be passed to the protocol's data_received() method. Nrrrrr �resume_reading?szReadTransport.resume_readingN)rrrrrr r!r"rrrr r.s rc@sNeZdZdZdZddd�Zdd�Zdd �Zd d�Zdd �Z dd�Z dd�ZdS)rz$Interface for write-only transports.rNcCst�dS)a�Set the high- and low-water limits for write flow control. 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Nrrrrr � write_eofwszWriteTransport.write_eofcCst�dS)zAReturn True if this transport supports write_eof(), False if not.Nrrrrr � can_write_eof�szWriteTransport.can_write_eofcCst�dS�z�Close the transport immediately. Buffered data will be lost. No more data will be received. The protocol's connection_lost() method will (eventually) be called with None as its argument. Nrrrrr �abort�szWriteTransport.abort)NN)rrrrrr&r'r)r,r-r.r0rrrr rHs rc@seZdZdZdZdS)raSInterface representing a bidirectional transport. There may be several implementations, but typically, the user does not implement new transports; rather, the platform provides some useful transports that are implemented using the platform's best practices. The user never instantiates a transport directly; they call a utility function, passing it a protocol factory and other information necessary to create the transport and protocol. (E.g. EventLoop.create_connection() or EventLoop.create_server().) 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The user may call set_write_buffer_limits() and get_write_buffer_size(), and their protocol's pause_writing() and resume_writing() may be called. )�_loop�_protocol_paused�_high_water� _low_waterNcs0t��|�|dk st�||_d|_|��dS)NF)�superr�AssertionErrorr;r<�_set_write_buffer_limits)r rZloop�� __class__rr rs z_FlowControlMixin.__init__c Cs�|��}||jkrdS|js�d|_z|j��WnRttfk rJ�Yn:tk r�}z|j� d|||jd��W5d}~XYnXdS)NTzprotocol.pause_writing() failed��messageZ exceptionZ transportr) r'r=r<� _protocolZ pause_writing� SystemExit�KeyboardInterrupt� BaseExceptionr;�call_exception_handler)r �size�excrrr �_maybe_pause_protocols �z'_FlowControlMixin._maybe_pause_protocolc Cs�|jr||��|jkr|d|_z|j��WnRttfk rB�Yn:tk rz}z|j� d|||jd��W5d}~XYnXdS)NFz protocol.resume_writing() failedrD) r<r'r>rFZresume_writingrGrHrIr;rJ)r rLrrr �_maybe_resume_protocol!s��z(_FlowControlMixin._maybe_resume_protocolcCs|j|jfSr )r>r=rrrr �get_write_buffer_limits1sz)_FlowControlMixin.get_write_buffer_limitscCsj|dkr|dkrd}nd|}|dkr.|d}||krBdksZntd|�d|�d��||_||_dS)Ni��zhigh (z) must be >= low (z) must be >= 0)� ValueErrorr=r>r#rrr rA4s�z*_FlowControlMixin._set_write_buffer_limitscCs|j||d�|��dS)N)r$r%)rArMr#rrr r&Dsz)_FlowControlMixin.set_write_buffer_limitscCst�dSr rrrrr r'Hsz'_FlowControlMixin.get_write_buffer_size)NN)NN)NN) rrrrrrrMrNrOrAr&r'� __classcell__rrrBr r:�s r:N) r�__all__rrrrrrr:rrrr �s%F6