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a _�hg � @ sZ d Z ddlZddlZddlZddlZddlZddlZddlZddlZddl Z ddl Z ddl m Z m Z ddlmZ ddlmZ ddlmZmZmZ ddlmZ ddlZddlmZmZmZm Z m Z m Z m Z m Z m!Z! dd l"m#Z# ej$r�dd lm%Z%m&Z&m'Z' e d d d �Z(zddl)m*Z* W n e+�y* dZ*Y n0 ej,ej-fZ.e/ed��rPe.ej0f7 Z.ej1ej2ej3ej4fZ5e/ed��r�e5ej6ej7ej8f7 Z5e j9dk�r�e5ej:f7 Z5ej;fZ<e/ed��r�e<ej=f7 Z<e j9�>d�Z?G dd� de@�ZAG dd� deB�ZCG dd� deB�ZDG dd� deE�ZFG d d � d eE�ZGG d d � d eG�ZHG d d � d eH�ZIG d!d"� d"eG�ZJe d#�d$d%�ZKdS )&aB Utility classes to write to and read from non-blocking files and sockets. Contents: * `BaseIOStream`: Generic interface for reading and writing. * `IOStream`: Implementation of BaseIOStream using non-blocking sockets. * `SSLIOStream`: SSL-aware version of IOStream. * `PipeIOStream`: Pipe-based IOStream implementation. � N)�Future�"future_set_result_unless_cancelled)�ioloop)�gen_log)�ssl_wrap_socket�_client_ssl_defaults�_server_ssl_defaults)�errno_from_exception) �Union�Optional� Awaitable�Callable�Pattern�Any�Dict�TypeVar�Tuple)� TracebackType)�Deque�List�Type� _IOStreamType�IOStream)�bound)�_set_nonblocking�WSAEWOULDBLOCK� WSAECONNRESET�darwin�WSAEINPROGRESS�winc s* e Zd ZdZdedd�� fdd� Z� ZS )�StreamClosedErrora� Exception raised by `IOStream` methods when the stream is closed. Note that the close callback is scheduled to run *after* other callbacks on the stream (to allow for buffered data to be processed), so you may see this error before you see the close callback. The ``real_error`` attribute contains the underlying error that caused the stream to close (if any). .. versionchanged:: 4.3 Added the ``real_error`` attribute. N)� real_error�returnc s t t| ��d� || _d S )NzStream is closed)�superr �__init__r! )�selfr! �� __class__� ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/tornado/iostream.pyr$ u s zStreamClosedError.__init__)N)�__name__� __module__� __qualname__�__doc__� BaseExceptionr$ � __classcell__r( r( r& r) r g s r c @ s e Zd ZdZdS )�UnsatisfiableReadErrorz�Exception raised when a read cannot be satisfied. Raised by ``read_until`` and ``read_until_regex`` with a ``max_bytes`` argument. N�r* r+ r, r- r( r( r( r) r0 z s r0 c @ s e Zd ZdZdS )�StreamBufferFullErrorzDException raised by `IOStream` methods when the buffer is full. Nr1 r( r( r( r) r2 � s r2 c @ sj e Zd ZdZdd�dd�Zed�dd�ZdZee e e f dd �d d �Z ee d �d d�Z edd �dd�ZdS )� _StreamBufferzh A specialized buffer that tries to avoid copies when large pieces of data are encountered. N�r" c C s t �� | _d| _d| _d S �Nr )� collections�deque�_buffers� _first_pos�_size�r% r( r( r) r$ � s �z_StreamBuffer.__init__c C s | j S �N)r: r; r( r( r) �__len__� s z_StreamBuffer.__len__i ��datar" c C s� t |�}|| jkr6t|t�s$t|�}| j�d|f� nV|dkr�| jrf| jd \}}|pbt |�| jk}nd}|r�| j�dt|�f� n||7 }| j|7 _dS )zX Append the given piece of data (should be a buffer-compatible object). Tr ���FN)�len�_large_buf_threshold� isinstance� memoryviewr8 �append� bytearrayr: )r% r? �size� is_memview�bZnew_bufr( r( r) rE � s z_StreamBuffer.append)rG r" c C st |dks J �z| j d \}}W n ty8 td� Y S 0 | j}|r\t�t|||| � �S t|�||| � S dS )zq Get a view over at most ``size`` bytes (possibly fewer) at the current buffer position. r � N)r8 � IndexErrorrD r9 �typing�cast)r% rG rH rI �posr( r( r) �peek� s z_StreamBuffer.peekc C s� d| k r| j ks n J �| j |8 _ | j}| j}|r�|dkr�|d \}}t|�| | }|dkr�|�� |t|�| 8 }d}q6|r�||7 }d}q6||7 }t|�d| kr�t�t|�d|�= d}d}q6|dks�J �|| _dS )zH Advance the current buffer position by ``size`` bytes. r � N)r: r9 r8 rA �popleftrL rM rF )r% rG rN �buffersZis_largerI Zb_remainr( r( r) �advance� s* z_StreamBuffer.advance)r* r+ r, r- r$ �intr= rB r �bytesrF rD rE rO rS r( r( r( r) r3 � s r3 c @ s� e Zd ZdZd`eeedd�dd�Zeeejf d�dd�Z dd�d d �Z e ed �d d �Z ee e f ee d�dd�Zee d�dd�Zdaeeee d�dd�Zdbeeee d�dd�Zdceeee d�dd �Zdde eee d �d d �Zee d�d d!�Zeee f d"d �d#d$�Zeeg df dd%�d&d'�Z deedee e d(ee ee f f dd)�d*d+�Z dd�d,d-�Z!ed�d.d/�Z"ed�d0d1�Z#ed�d2d3�Z$edd4�d5d6�Z%dd�d7d8�Z&eeejf edd9�d:d;�Z'ee d�d<d=�Z(dd�d>d?�Z)e*d�d@dA�Z+eeddB�dCdD�Z,dd�dEdF�Z-ee d�dGdH�Z.eddI�dJdK�Z/ee d�dLdM�Z0eee1f eddN�dOdP�Z2dd�dQdR�Z3eedS�dTdU�Z4dd�dVdW�Z5dd�dXdY�Z6eddZ�d[d\�Z7e ed]�d^d_�Z8dS )f� BaseIOStreama� A utility class to write to and read from a non-blocking file or socket. We support a non-blocking ``write()`` and a family of ``read_*()`` methods. When the operation completes, the ``Awaitable`` will resolve with the data read (or ``None`` for ``write()``). All outstanding ``Awaitables`` will resolve with a `StreamClosedError` when the stream is closed; `.BaseIOStream.set_close_callback` can also be used to be notified of a closed stream. When a stream is closed due to an error, the IOStream's ``error`` attribute contains the exception object. Subclasses must implement `fileno`, `close_fd`, `write_to_fd`, `read_from_fd`, and optionally `get_fd_error`. N)�max_buffer_size�read_chunk_size�max_write_buffer_sizer" c C s� t j�� | _|pd| _t|p d| jd �| _|| _d| _t � | _ d| _ d| _ d| _ d| _t� | _d| _d| _d| _d| _d| _d| _d| _d| _d| _t�� | _ d| _ d| _ d| _ d| _ d| _!d| _"dS )a� `BaseIOStream` constructor. :arg max_buffer_size: Maximum amount of incoming data to buffer; defaults to 100MB. :arg read_chunk_size: Amount of data to read at one time from the underlying transport; defaults to 64KB. :arg max_write_buffer_size: Amount of outgoing data to buffer; defaults to unlimited. .. versionchanged:: 4.0 Add the ``max_write_buffer_size`` parameter. Changed default ``read_chunk_size`` to 64KB. .. versionchanged:: 5.0 The ``io_loop`` argument (deprecated since version 4.1) has been removed. i @i rP Nr F)#r �IOLoop�current�io_looprW �minrX rY �errorrF � _read_buffer�_read_buffer_pos�_read_buffer_size�_user_read_buffer�_after_user_read_bufferr3 � _write_buffer�_total_write_index�_total_write_done_index�_read_delimiter� _read_regex�_read_max_bytes� _read_bytes� _read_partial�_read_until_close� _read_futurer6 r7 �_write_futures�_close_callback�_connect_future�_ssl_connect_future� _connecting�_state�_closed)r% rW rX rY r( r( r) r$ � s8 �zBaseIOStream.__init__r4 c C s t � �dS )z,Returns the file descriptor for this stream.N��NotImplementedErrorr; r( r( r) �fileno1 s zBaseIOStream.filenoc C s t � �dS )z�Closes the file underlying this stream. ``close_fd`` is called by `BaseIOStream` and should not be called elsewhere; other users should call `close` instead. Nru r; r( r( r) �close_fd5 s zBaseIOStream.close_fdr> c C s t � �dS )ziAttempts to write ``data`` to the underlying file. Returns the number of bytes written. Nru �r% r? r( r( r) � write_to_fd= s zBaseIOStream.write_to_fd��bufr" c C s t � �dS )a� Attempts to read from the underlying file. Reads up to ``len(buf)`` bytes, storing them in the buffer. Returns the number of bytes read. Returns None if there was nothing to read (the socket returned `~errno.EWOULDBLOCK` or equivalent), and zero on EOF. .. versionchanged:: 5.0 Interface redesigned to take a buffer and return a number of bytes instead of a freshly-allocated object. Nru )r% r| r( r( r) � read_from_fdD s zBaseIOStream.read_from_fdc C s dS )a> Returns information about any error on the underlying file. This method is called after the `.IOLoop` has signaled an error on the file descriptor, and should return an Exception (such as `socket.error` with additional information, or None if no such information is available. Nr( r; r( r( r) � get_fd_errorS s zBaseIOStream.get_fd_error)�regex� max_bytesr" c C s� | � � }t�|�| _|| _z | �� W n\ tyh } z*t�d| � | j |d� |W Y d}~S d}~0 |� dd� � � Y n0 |S )a� Asynchronously read until we have matched the given regex. The result includes the data that matches the regex and anything that came before it. If ``max_bytes`` is not None, the connection will be closed if more than ``max_bytes`` bytes have been read and the regex is not satisfied. .. versionchanged:: 4.0 Added the ``max_bytes`` argument. The ``callback`` argument is now optional and a `.Future` will be returned if it is omitted. .. versionchanged:: 6.0 The ``callback`` argument was removed. Use the returned `.Future` instead. �*Unsatisfiable read, closing connection: %s��exc_infoNc S s | � � S r< �� exception��fr( r( r) �<lambda>~ rJ z/BaseIOStream.read_until_regex.<locals>.<lambda>) � _start_read�re�compilerh ri �_try_inline_readr0 r �info�close�add_done_callback)r% r r� �future�er( r( r) �read_until_regex] s z BaseIOStream.read_until_regex)� delimiterr� r" c C s� | � � }|| _|| _z | �� W n\ tyb } z*t�d| � | j|d� |W Y d}~S d}~0 |�dd� � � Y n0 |S )an Asynchronously read until we have found the given delimiter. The result includes all the data read including the delimiter. If ``max_bytes`` is not None, the connection will be closed if more than ``max_bytes`` bytes have been read and the delimiter is not found. .. versionchanged:: 4.0 Added the ``max_bytes`` argument. The ``callback`` argument is now optional and a `.Future` will be returned if it is omitted. .. versionchanged:: 6.0 The ``callback`` argument was removed. Use the returned `.Future` instead. r� r� Nc S s | � � S r< r� r� r( r( r) r� � rJ z)BaseIOStream.read_until.<locals>.<lambda>) r� rg ri r� r0 r r� r� r� )r% r� r� r� r� r( r( r) � read_until� s zBaseIOStream.read_untilF)� num_bytes�partialr" c C sR | � � }t|tj�sJ �|| _|| _z | �� W n |�dd� � � Y n0 |S )aJ Asynchronously read a number of bytes. If ``partial`` is true, data is returned as soon as we have any bytes to return (but never more than ``num_bytes``) .. versionchanged:: 4.0 Added the ``partial`` argument. The callback argument is now optional and a `.Future` will be returned if it is omitted. .. versionchanged:: 6.0 The ``callback`` and ``streaming_callback`` arguments have been removed. Use the returned `.Future` (and ``partial=True`` for ``streaming_callback``) instead. c S s | � � S r< r� r� r( r( r) r� � rJ z)BaseIOStream.read_bytes.<locals>.<lambda>)r� rC �numbers�Integralrj rk r� r� )r% r� r� r� r( r( r) � read_bytes� s zBaseIOStream.read_bytes)r| r� r" c C s� | � � }| j}t|�}||krZ| j| }t| j�| j|� |dd�< | jd|�= | j| _n$|dkr~t| j�| jd� |d|�< d| _|| _d| _|| _|| _|| _ z | � � W n |� dd� � � Y n0 |S )a� Asynchronously read a number of bytes. ``buf`` must be a writable buffer into which data will be read. If ``partial`` is true, the callback is run as soon as any bytes have been read. Otherwise, it is run when the ``buf`` has been entirely filled with read data. .. versionadded:: 5.0 .. versionchanged:: 6.0 The ``callback`` argument was removed. Use the returned `.Future` instead. Nr Tc S s | � � S r< r� r� r( r( r) r� � rJ z(BaseIOStream.read_into.<locals>.<lambda>) r� ra rA r` rD r_ rc rb rj rk r� r� )r% r| r� r� Zavailable_bytes�n�endr( r( r) � read_into� s0 � zBaseIOStream.read_intoc C sV | � � }| �� r"| �| jd� |S d| _z | �� W n |�dd� � � Y n0 |S )a� Asynchronously reads all data from the socket until it is closed. This will buffer all available data until ``max_buffer_size`` is reached. If flow control or cancellation are desired, use a loop with `read_bytes(partial=True) <.read_bytes>` instead. .. versionchanged:: 4.0 The callback argument is now optional and a `.Future` will be returned if it is omitted. .. versionchanged:: 6.0 The ``callback`` and ``streaming_callback`` arguments have been removed. Use the returned `.Future` (and `read_bytes` with ``partial=True`` for ``streaming_callback``) instead. FTc S s | � � S r< r� r� r( r( r) r� rJ z/BaseIOStream.read_until_close.<locals>.<lambda>)r� �closed� _finish_readra rl r� r� �r% r� r( r( r) �read_until_close� s z BaseIOStream.read_until_closez Future[None]c C s� | � � |rT| jdur6t| j�t|� | jkr6td��| j�|� | jt|�7 _t� }|�dd� � | j �| j|f� | j s�| � � | jr�| � | j j� | �� |S )a: Asynchronously write the given data to this stream. This method returns a `.Future` that resolves (with a result of ``None``) when the write has been completed. The ``data`` argument may be of type `bytes` or `memoryview`. .. versionchanged:: 4.0 Now returns a `.Future` if no callback is given. .. versionchanged:: 4.5 Added support for `memoryview` arguments. .. versionchanged:: 6.0 The ``callback`` argument was removed. Use the returned `.Future` instead. Nz!Reached maximum write buffer sizec S s | � � S r< r� r� r( r( r) r� , rJ z$BaseIOStream.write.<locals>.<lambda>)� _check_closedrY rA rd r2 rE re r r� rn rr � _handle_write� _add_io_stater\ �WRITE�_maybe_add_error_listener)r% r? r� r( r( r) �write s$ �� zBaseIOStream.write)�callbackr" c C s || _ | �� dS )a� Call the given callback when the stream is closed. This mostly is not necessary for applications that use the `.Future` interface; all outstanding ``Futures`` will resolve with a `StreamClosedError` when the stream is closed. However, it is still useful as a way to signal that the stream has been closed while no other read or write is in progress. Unlike other callback-based interfaces, ``set_close_callback`` was not removed in Tornado 6.0. N)ro r� )r% r� r( r( r) �set_close_callback5 s z BaseIOStream.set_close_callbackz Optional[Type[BaseException]])r� r" c C s� | � � s�|rNt|t�r"|d | _n,t|t�r4|| _nt�� }t|�rN|d | _| jrjd| _| � | j d� n<| j dur�z | � � }W n t y� Y n0 |dur�| �|� | jdur�| j�| �� � d| _| �� d| _| �� dS )z�Close this stream. If ``exc_info`` is true, set the ``error`` attribute to the current exception from `sys.exc_info` (or if ``exc_info`` is a tuple, use that instead of `sys.exc_info`). � FNT)r� rC �tupler^ r. �sysr� �anyrl r� ra rm �_find_read_posr0 �_read_from_bufferrs r\ �remove_handlerrw rx rt �_signal_closed)r% r� rN r( r( r) r� D s2 zBaseIOStream.closec C s g }| j d ur |�| j � d | _ |dd� | jD �7 }| j�� | jd urZ|�| j� d | _|D ]@}|�� s||�t| jd�� z |� � W q^ t j y� Y q^0 q^| j d ur�| j �� s�| jd ur�| j �| j� n| j �t� � | j � � d | _ | j d u�r| j }d | _ | j�|� d | _d S )Nc S s g | ] \}}|�qS r( r( )�.0�_r� r( r( r) � <listcomp>y rJ z/BaseIOStream._signal_closed.<locals>.<listcomp>�r! )rm rE rn �clearrp �doneZ set_exceptionr r^ r� �asyncio�CancelledErrorrq ro r\ � add_callbackrd )r% Zfuturesr� �cbr( r( r) r� t s8 zBaseIOStream._signal_closedc C s | j duS )z=Returns ``True`` if we are currently reading from the stream.N)rm r; r( r( r) �reading� s zBaseIOStream.readingc C s t | j�S )z;Returns ``True`` if we are currently writing to the stream.)�boolrd r; r( r( r) �writing� s zBaseIOStream.writingc C s | j S )z/Returns ``True`` if the stream has been closed.)rt r; r( r( r) r� � s zBaseIOStream.closed��valuer" c C s dS )a� Sets the no-delay flag for this stream. By default, data written to TCP streams may be held for a time to make the most efficient use of bandwidth (according to Nagle's algorithm). The no-delay flag requests that data be written as soon as possible, even if doing so would consume additional bandwidth. This flag is currently defined only for TCP-based ``IOStreams``. .. versionadded:: 3.1 Nr( )r% r� r( r( r) � set_nodelay� s zBaseIOStream.set_nodelayc C s t � �d S r< ru r; r( r( r) �_handle_connect� s z BaseIOStream._handle_connect)�fd�eventsr" c C s� | � � rt�d|� d S �z| jr*| �� | � � r8W d S || jj@ rL| �� | � � rZW d S || jj@ rn| � � | � � r|W d S || jj @ r�| � � | _ | j� | j� W d S | jj }| �� r�|| jjO }| �� r�|| jjO }|| jj kr�| jdkr�|| jjO }|| jk�r2| jd u�sJ d��|| _| j�| �� | j� W n� t�yt } z&t�d| � | j|d� W Y d }~nJd }~0 t�y� } z(tj ddd� | j|d� � W Y d }~n d }~0 0 d S )Nz Got events for closed stream %sr z4shouldn't happen: _handle_events without self._stater� r� z'Uncaught exception, closing connection.T)r� r �warningrr r� r\ �READ� _handle_readr� r� �ERRORr~ r^ r� r� r� r� ra rs �update_handlerrw r0 r� � Exception)r% r� r� �stater� r( r( r) �_handle_events� sR �� zBaseIOStream._handle_eventsc C s� | j d ur| j }n$| jd ur$| j}n| �� r2d }nd}d}| �� s�| �� dkrPq�|d urd| j|krdq�| j|kr:| �� }|d ur�|S | jd }q:| �� S )Nr rP )rj ri r� r� �_read_to_bufferra r� )r% Z target_bytesZ next_find_posrN r( r( r) �_read_to_buffer_loop� s& z!BaseIOStream._read_to_buffer_loopc C s� z | � � }W nf ty � Y nT tjy4 � Y n@ tyr } z(t�d| � | j|d� W Y d }~d S d }~0 0 |d ur�| �|� d S )Nzerror on read: %sr� ) r� r0 r� r� r� r r� r� r� )r% rN r� r( r( r) r� s zBaseIOStream._handle_readc C s2 | j d ur$| �� | j d u s$J d��t� | _ | j S )NzAlready reading)rm r� r r; r( r( r) r� % s zBaseIOStream._start_read)rG � streamingr" c C sn | j r8| jpt� | _d | _d| _t| j�| _d| _ |}n | �|�}| jd urb| j}d | _t ||� | � � d S )Nr F) rb rc rF r_ r` rA ra �_consumerm r r� )r% rG r� �resultr� r( r( r) r� < s zBaseIOStream._finish_readc C s^ | � � }|dur | �|� dS | �� | �� }|durD| �|� dS | �� sZ| �tjj� dS )a Attempt to complete the current read operation from buffered data. If the read can be completed without blocking, schedules the read callback on the next IOLoop iteration; otherwise starts listening for reads on the socket. N) r� r� r� r� r� r� r rZ r� �r% rN r( r( r) r� L s z BaseIOStream._try_inline_readc C sH �zz4| j r"t| j�| jd� }n t| j�}| �|�}W q� tjt t fy� } z\t |�t j krjW Y d}~q| �|�r�| j|d� W Y d}~W ~dS | j|d� � W Y d}~q�d}~0 0 q�q|du r�W ~dS |dkr�| �� W ~dS | j �s| jt|�d|� 7 _| j|7 _W ~n~0 | j| jk�rDt�d� | �� td��|S )a Reads from the socket and appends the result to the read buffer. Returns the number of bytes read. Returns 0 if there is nothing to read (i.e. the read returns EWOULDBLOCK or equivalent). On error closes the socket and raises an exception. Nr� r z Reached maximum read buffer size)rb rD r_ ra rF rX r} �socketr^ �IOError�OSErrorr �errnoZEINTR� _is_connresetr� rW r r2 )r% r| Z bytes_readr� r( r( r) r� b sJ � � �� z BaseIOStream._read_to_buffer)rN r" c C s( d | _ | _| _d| _| �|d� dS )z�Attempts to complete the currently-pending read from the buffer. The argument is either a position in the read buffer or None, as returned by _find_read_pos. NF)rj rg rh rk r� r� r( r( r) r� � s z BaseIOStream._read_from_bufferc C s | j dur8| j| j ks&| jr8| jdkr8t| j | j�}|S | jdur�| jr�| j�| j| j�}|dkr�|| j8 }t| j�}| � | j|| � || S | � | j| j� nZ| j dur�| jr�| j � | j| j�}|dur�|� � | j }| � | j |� |S | � | j | j� dS )z�Attempts to find a position in the read buffer that satisfies the currently-pending read. Returns a position in the buffer if the current read can be satisfied, or None if it cannot. Nr r@ ) rj ra rk r] rg r_ �findr` rA �_check_max_bytesrh �searchr� )r% r� �locZ delimiter_len�mr( r( r) r� � s: ��� � zBaseIOStream._find_read_pos)r� rG r" c C s* | j d ur&|| j kr&td|| j f ��d S )Nz&delimiter %r not found within %d bytes)ri r0 )r% r� rG r( r( r) r� � s ��z BaseIOStream._check_max_bytesc C s" t | j�}|sq�|dks J �zDtr&d}| �| j�|��}|dkrDW q�| j�|� | j|7 _W q tjt t fy� } z^|j d t v r�W Y d }~q�n6| � |�s�t�d| �� |� | j|d� W Y d }~d S W Y d }~q d }~0 0 q | j�r | jd \}}|| jk�r�q | j�� t|d � q�d S )Nr i zWrite error on %s: %sr� )rA rd �_WINDOWSrz rO rS rf r� r^ r� r� �args�_ERRNO_WOULDBLOCKr� r r� rw r� rn rQ r )r% rG r� r� �indexr� r( r( r) r� � s2 & zBaseIOStream._handle_write)r� r" c C sx |dkr dS || j ksJ �t| j�| j| j| � �� }| j|7 _| j |8 _ | j| j krt| jd | j�= d| _|S )Nr rJ )ra rD r_ r` �tobytes)r% r� rI r( r( r) r� � s �� zBaseIOStream._consumec C s | � � rt| jd��d S )Nr� )r� r r^ r; r( r( r) r� s zBaseIOStream._check_closedc C sF | j d u s| j tjjkrB| �� sB| jdkrB| jd urB| �tjj� d S r5 ) rs r rZ r� r� ra ro r� r� r; r( r( r) r� s ���z&BaseIOStream._maybe_add_error_listener)r� r" c C sl | � � r dS | jdu r>tjj|B | _| j�| �� | j| j� n*| j|@ sh| j|B | _| j� | �� | j� dS )a Adds `state` (IOLoop.{READ,WRITE} flags) to our event handler. Implementation notes: Reads and writes have a fast path and a slow path. The fast path reads synchronously from socket buffers, while the slow path uses `_add_io_state` to schedule an IOLoop callback. To detect closed connections, we must have called `_add_io_state` at some point, but we want to delay this as much as possible so we don't have to set an `IOLoop.ERROR` listener that will be overwritten by the next slow-path operation. If a sequence of fast-path ops do not end in a slow-path op, (e.g. for an @asynchronous long-poll request), we must add the error handler. TODO: reevaluate this now that callbacks are gone. N) r� rs r rZ r� r\ � add_handlerrw r� r� )r% r� r( r( r) r� s zBaseIOStream._add_io_state)�excr" c C s t |tjtf�ot|�tv S )zfReturn ``True`` if exc is ECONNRESET or equivalent. May be overridden in subclasses. )rC r� r^ r� r �_ERRNO_CONNRESET)r% r� r( r( r) r� 9 s �zBaseIOStream._is_connreset)NNN)N)N)F)F)F)9r* r+ r, r- rT r$ r r � _Selectablerw rx rD rz rF r r} r� r~ rU r r� r� r� r� r� r� r� r r� r. r r r� r� r� r� r� r� r� r� r� r� r r� r� r� r� r� r� r r� r� r� r� r� r� r� r( r( r( r) rV � sx �� : %! 1 ' ����� � 0' 5)0 *' rV c s� e Zd ZdZejeedd�� fdd� Zeee j f d�dd�Z dd�d d �Z e e d�d d �Zeeef e e d �dd�Zeed�dd�Zd eeedd�dd�Zd!eeeeef ejf ee d d�dd�Z dd�dd �Z edd �d d �Z � Z S )"r a� Socket-based `IOStream` implementation. This class supports the read and write methods from `BaseIOStream` plus a `connect` method. The ``socket`` parameter may either be connected or unconnected. For server operations the socket is the result of calling `socket.accept <socket.socket.accept>`. For client operations the socket is created with `socket.socket`, and may either be connected before passing it to the `IOStream` or connected with `IOStream.connect`. A very simple (and broken) HTTP client using this class: .. testcode:: import tornado.ioloop import tornado.iostream import socket async def main(): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0) stream = tornado.iostream.IOStream(s) await stream.connect(("friendfeed.com", 80)) await stream.write(b"GET / HTTP/1.0\r\nHost: friendfeed.com\r\n\r\n") header_data = await stream.read_until(b"\r\n\r\n") headers = {} for line in header_data.split(b"\r\n"): parts = line.split(b":") if len(parts) == 2: headers[parts[0].strip()] = parts[1].strip() body_data = await stream.read_bytes(int(headers[b"Content-Length"])) print(body_data) stream.close() if __name__ == '__main__': tornado.ioloop.IOLoop.current().run_sync(main) s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0) stream = tornado.iostream.IOStream(s) stream.connect(("friendfeed.com", 80), send_request) tornado.ioloop.IOLoop.current().start() .. testoutput:: :hide: N)r� r� �kwargsr" c s, || _ | j �d� tt| �j|i |�� d S )NF)r� � setblockingr# r r$ )r% r� r� r� r& r( r) r$ t s zIOStream.__init__r4 c C s | j S r< )r� r; r( r( r) rw y s zIOStream.filenoc C s | j �� d | _ d S r< )r� r� r; r( r( r) rx | s zIOStream.close_fdc C s$ | j �t jt j�}t �|t�|��S r< )r� � getsockopt� SOL_SOCKET�SO_ERRORr^ �os�strerror)r% r� r( r( r) r~ � s zIOStream.get_fd_errorr{ c C sr zhz| j �|t|��W W ~S t jyb } z.|jd tv rLW Y d }~W ~d S � W Y d }~n d }~0 0 W ~n~0 d S r5 )r� � recv_intorA r^ r� r� �r% r| r� r( r( r) r} � s � �zIOStream.read_from_fdr> c C s z| j �|�W ~S ~0 d S r< )r� �sendry r( r( r) rz � s �zIOStream.write_to_fdzFuture[_IOStreamType])r% �address�server_hostnamer" c C s� d| _ t� }t�d|�| _z| j�|� W nv tjy� } z\t|�t vr�t|�t vr�|du rpt � d| j� � |� | j|d� |W Y d}~S W Y d}~n d}~0 0 | �| jj� |S )a� Connects the socket to a remote address without blocking. May only be called if the socket passed to the constructor was not previously connected. The address parameter is in the same format as for `socket.connect <socket.socket.connect>` for the type of socket passed to the IOStream constructor, e.g. an ``(ip, port)`` tuple. Hostnames are accepted here, but will be resolved synchronously and block the IOLoop. If you have a hostname instead of an IP address, the `.TCPClient` class is recommended instead of calling this method directly. `.TCPClient` will do asynchronous DNS resolution and handle both IPv4 and IPv6. If ``callback`` is specified, it will be called with no arguments when the connection is completed; if not this method returns a `.Future` (whose result after a successful connection will be the stream itself). In SSL mode, the ``server_hostname`` parameter will be used for certificate validation (unless disabled in the ``ssl_options``) and SNI (if supported; requires Python 2.7.9+). Note that it is safe to call `IOStream.write <BaseIOStream.write>` while the connection is pending, in which case the data will be written as soon as the connection is ready. Calling `IOStream` read methods before the socket is connected works on some platforms but is non-portable. .. versionchanged:: 4.0 If no callback is given, returns a `.Future`. .. versionchanged:: 4.2 SSL certificates are validated by default; pass ``ssl_options=dict(cert_reqs=ssl.CERT_NONE)`` or a suitably-configured `ssl.SSLContext` to the `SSLIOStream` constructor to disable. .. versionchanged:: 6.0 The ``callback`` argument was removed. Use the returned `.Future` instead. TzFuture[IOStream]N�Connect error on fd %s: %sr� )rr r rL rM rp r� �connectr^ r �_ERRNO_INPROGRESSr� r r� rw r� r� r\ r� )r% r� r� r� r� r( r( r) r� � s$ / � � � &zIOStream.connect� SSLIOStream)� server_side� ssl_optionsr� r" c C s� | j s$| js$| js$| js$| js$| jr,td��|du rB|r>t}nt}| j }| j � |� d| _ t ||||dd�}| j }d| _ t� }t||d�}|�|� ||_| j|_| j|_|S )a� Convert this `IOStream` to an `SSLIOStream`. This enables protocols that begin in clear-text mode and switch to SSL after some initial negotiation (such as the ``STARTTLS`` extension to SMTP and IMAP). This method cannot be used if there are outstanding reads or writes on the stream, or if there is any data in the IOStream's buffer (data in the operating system's socket buffer is allowed). This means it must generally be used immediately after reading or writing the last clear-text data. It can also be used immediately after connecting, before any reads or writes. The ``ssl_options`` argument may be either an `ssl.SSLContext` object or a dictionary of keyword arguments for the `ssl.wrap_socket` function. The ``server_hostname`` argument will be used for certificate validation unless disabled in the ``ssl_options``. This method returns a `.Future` whose result is the new `SSLIOStream`. After this method has been called, any other operation on the original stream is undefined. If a close callback is defined on this stream, it will be transferred to the new stream. .. versionadded:: 4.0 .. versionchanged:: 4.2 SSL certificates are validated by default; pass ``ssl_options=dict(cert_reqs=ssl.CERT_NONE)`` or a suitably-configured `ssl.SSLContext` to disable. z+IOStream is not idle; cannot convert to SSLNF)r� r� �do_handshake_on_connect)r� )rm rn rp rt r_ rd � ValueErrorr r r� r\ r� r ro r r� r� rq rW rX )r% r� r� r� r� Zorig_close_callbackr� Z ssl_streamr( r( r) � start_tls� sH )������ � zIOStream.start_tlsc C s� z| j �t jt j�}W n8 t jyN } z t|�tjkr:d}W Y d }~n d }~0 0 |dkr�t �|t� |��| _| j d u r�t � d| j � � tj| � | �� d S | j d ur�| j }d | _ t|| � d| _d S )Nr r� F)r� r� r� r� r^ r r� Z ENOPROTOOPTr� r� rp r r� rw � errorcoder� r rr )r% �errr� r� r( r( r) r� , s( � zIOStream._handle_connectr� c C s� | j d ur~| j jt jt jfv r~z | j �t jt j|r6dnd� W n> t jy| } z$|jtj krh| � |�sh� W Y d }~n d }~0 0 d S )Nr� r ) r� �family�AF_INET�AF_INET6� setsockopt� IPPROTO_TCP� TCP_NODELAYr^ r� �EINVALr� )r% r� r� r( r( r) r� H s ��zIOStream.set_nodelay)N)NN)!r* r+ r, r- r� r r$ r rT r r� rw rx r r� r~ rF rD r} rz r r� �strr� r� r �ssl� SSLContextr r� r� r� r/ r( r( r& r) r D s, / �� L �� L c s e Zd ZdZdZeedd�� fdd� Zed�� fdd� Zed�� fd d � Z dd�d d �Z dd�d d�Z eed�dd�Z dd�� fdd� Z dd�� fdd� Zd'eedd�� fdd� Zdd�� fdd� Zdd�d d �Zeed �d d �Zeeef ee d!�d"d#�Zeed$�� fd%d&� Z � Z S )(r� an A utility class to write to and read from a non-blocking SSL socket. If the socket passed to the constructor is already connected, it should be wrapped with:: ssl.wrap_socket(sock, do_handshake_on_connect=False, **kwargs) before constructing the `SSLIOStream`. Unconnected sockets will be wrapped when `IOStream.connect` is finished. N)r� r� r" c sr |� dt�| _tt| �j|i |�� d| _d| _d| _d| _ z| j � � W n t j y^ Y n0 | � | jj� dS )z�The ``ssl_options`` keyword argument may either be an `ssl.SSLContext` object or a dictionary of keywords arguments for `ssl.wrap_socket` r� TFN)�popr � _ssl_optionsr# r� r$ �_ssl_accepting�_handshake_reading�_handshake_writing�_server_hostnamer� � getpeernamer^ r� r\ r� )r% r� r� r& r( r) r$ g s zSSLIOStream.__init__r4 c s | j ptt| ��� S r< )r r# r� r� r; r& r( r) r� ~ s zSSLIOStream.readingc s | j ptt| ��� S r< )r r# r� r� r; r& r( r) r� � s zSSLIOStream.writingc C s� z d| _ d| _| j�� W �n� tj�y" } z�|jd tjkrTd| _ W Y d }~d S |jd tjkrxd| _W Y d }~d S |jd tj tj fv r�| j |d�W Y d }~S |jd tj k�r z| j� � }W n ty� d}Y n0 t�d| j�� ||� | j |d�W Y d }~S � W Y d }~n�d }~0 tj�y� } zL| �|��sZ|jd dtjtjfv �rr| j |d�W Y d }~S � W Y d }~nfd }~0 t�y� } z| j |d�W Y d }~S d }~0 0 d| _| �| j�� ��s�| � � d S | �� d S )NFr Tr� z(not connected)zSSL Error on %s %s: %s) r r r� � do_handshaker �SSLErrorr� �SSL_ERROR_WANT_READ�SSL_ERROR_WANT_WRITE� SSL_ERROR_EOF�SSL_ERROR_ZERO_RETURNr� � SSL_ERROR_SSLr r� r r� rw r^ r� r� �EBADF�ENOTCONN�AttributeErrorr � _verify_cert� getpeercert�_finish_ssl_connect)r% r� Zpeerr( r( r) �_do_ssl_handshake� sL ��"z SSLIOStream._do_ssl_handshakec C s$ | j d ur | j }d | _ t|| � d S r< )rq r r� r( r( r) r � s z SSLIOStream._finish_ssl_connect)�peercertr" c C s� t | jt�r | j�dtj�}nt | jtj�r4| jj}|tjtjtj fv sLJ �|tjks`| j du rddS | j � � }|du r�|tjkr�t �d� dS zt�|| j � W n6 tjy� } z t �d| � W Y d}~dS d}~0 0 dS dS )a Returns ``True`` if peercert is valid according to the configured validation mode and hostname. The ssl handshake already tested the certificate for a valid CA signature; the only thing that remains is to check the hostname. � cert_reqsNTzNo SSL certificate givenFzInvalid SSL certificate: %s)rC r �dict�getr � CERT_NONEr � verify_mode� CERT_REQUIRED� CERT_OPTIONALr r� r r r� �match_hostname�CertificateError)r% r r �certr� r( r( r) r � s" zSSLIOStream._verify_certc s$ | j r| �� d S tt| ��� d S r< )r r r# r� r� r; r& r( r) r� � s zSSLIOStream._handle_readc s$ | j r| �� d S tt| ��� d S r< )r r r# r� r� r; r& r( r) r� � s zSSLIOStream._handle_writezFuture[SSLIOStream])r� r� r" c s, || _ tt| ��|�}|�dd� � | �� S )Nc S s | � � S r< r� r� r( r( r) r� � rJ z%SSLIOStream.connect.<locals>.<lambda>)r r# r� r� r� �wait_for_handshake)r% r� r� Zfutr& r( r) r� � s zSSLIOStream.connectc sf t t| ��� | �� rd S | j�| j� | j}|d us:J �d | _t| j| j | j dd�| _| � |� d S )NF)r� r� ) r# r� r� r� r\ r� r� rs r r r r� )r% � old_stater& r( r) r� � s �zSSLIOStream._handle_connectc C s0 | j durtd��t� }| _ | js,| �� |S )av Wait for the initial SSL handshake to complete. If a ``callback`` is given, it will be called with no arguments once the handshake is complete; otherwise this method returns a `.Future` which will resolve to the stream itself after the handshake is complete. Once the handshake is complete, information such as the peer's certificate and NPN/ALPN selections may be accessed on ``self.socket``. This method is intended for use on server-side streams or after using `IOStream.start_tls`; it should not be used with `IOStream.connect` (which already waits for the handshake to complete). It may only be called once per stream. .. versionadded:: 4.2 .. versionchanged:: 6.0 The ``callback`` argument was removed. Use the returned `.Future` instead. NzAlready waiting)rq � RuntimeErrorr r r r� r( r( r) r& s z SSLIOStream.wait_for_handshaker> c C sn zdz| j �|�W W ~S tjy^ } z0|jd tjkrHW Y d }~W ~dS � W Y d }~n d }~0 0 W ~n~0 d S r5 )r� r� r r r� r )r% r? r� r( r( r) rz 2 s � �zSSLIOStream.write_to_fdr{ c C s� z�| j rW ~d S z| j�|t|��W W ~S tjyr } z0|jd tjkr\W Y d }~W ~d S � W Y d }~nPd }~0 tjy� } z.|jd t v r�W Y d }~W ~d S � W Y d }~n d }~0 0 W ~n~0 d S r5 ) r r� r� rA r r r� r r^ r� r� r( r( r) r} D s, �� � �zSSLIOStream.read_from_fd)r� r" c s0 t |tj�r |jd tjkr dS tt| ��|�S )Nr T)rC r r r� r r# r� r� )r% r� r& r( r) r� \ s zSSLIOStream._is_connreset)N) r* r+ r, r- r� r r$ r� r� r� r r r r� r� r r r� r� r& rD rT rz r rF r r} r. r� r/ r( r( r& r) r� Y s( 3 �� r� c st e Zd ZdZeeedd�� fdd� Zed�dd�Zdd�d d �Ze ed �d d �Z e e e f e e d�dd�Z� ZS )� PipeIOStreama Pipe-based `IOStream` implementation. The constructor takes an integer file descriptor (such as one returned by `os.pipe`) rather than an open file object. Pipes are generally one-way, so a `PipeIOStream` can be used for reading or writing but not both. N)r� r� r� r" c s8 || _ t�| j d�| _t|� tt| �j|i |�� d S )Nzr+)r� �io�FileIO�_fior r# r) r$ )r% r� r� r� r& r( r) r$ k s zPipeIOStream.__init__r4 c C s | j S r< )r� r; r( r( r) rw q s zPipeIOStream.filenoc C s | j �� d S r< )r, r� r; r( r( r) rx t s zPipeIOStream.close_fdr> c C s zt �| j|�W ~S ~0 d S r< )r� r� r� ry r( r( r) rz w s �zPipeIOStream.write_to_fdr{ c C sz zpz| j �|�W W ~S ttfyj } z:t|�tjkrT| j|d� W Y d }~W ~d S � W Y d }~n d }~0 0 W ~n~0 d S )Nr� )r, �readintor� r� r r� r r� r� r( r( r) r} s � �zPipeIOStream.read_from_fd)r* r+ r, r- rT r r$ rw rx rD rz r rF r r} r/ r( r( r& r) r) b s r) r4 c C s dd l } | �� S r5 )�doctestZ DocTestSuite)r. r( r( r) �doctests� s r/ )Lr- r� r6 r� r* r� r� r� r r� r� Ztornado.concurrentr r �tornador Z tornado.logr Ztornado.netutilr r r Z tornado.utilr rL r r r r r r r r r �typesr � TYPE_CHECKINGr r r r Ztornado.platform.posixr � ImportError� EWOULDBLOCK�EAGAINr� �hasattrr � ECONNRESET� ECONNABORTED�EPIPEZ ETIMEDOUTr� r ZWSAECONNABORTEDZ WSAETIMEDOUT�platform� EPROTOTYPEZ EINPROGRESSr� r � startswithr� r� r r� r0 r2 �objectr3 rV r r� r) r/ r( r( r( r) �<module> sx , � \ e ,
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