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o �h�: � @ s� d Z ddlZddlZddlZddlZddlmZ ddlmZ ddl m Z ddl m Z m Z ddlmZmZmZmZ ddlmZ dd lmZ ddlZdd lmZmZmZmZmZm Z ej rcdd lm Z m Z G d d � d e �Z!dS )z+A non-blocking, single-threaded TCP server.� N)�gen)�app_log)�IOLoop)�IOStream� SSLIOStream)� bind_sockets�add_accept_handler�ssl_wrap_socket�_DEFAULT_BACKLOG)�process)�errno_from_exception)�Union�Dict�Any�Iterable�Optional� Awaitable)�Callable�Listc @ sZ e Zd ZdZ d'deeeeef e j f dee dee ddfdd�Z de jedd fd e d ee d e jd e dee deddfdd�Zdee j ddfdd�Zde j ddfdd�Zde jedd fd e d ee d e jd e dee deddfdd�Z d(dee d ee ddfd d �Zd)d d �Zd!ed edeed fd"d#�Z d$e j d eddfd%d&�Z dS )*� TCPServeraN A non-blocking, single-threaded TCP server. To use `TCPServer`, define a subclass which overrides the `handle_stream` method. For example, a simple echo server could be defined like this:: from tornado.tcpserver import TCPServer from tornado.iostream import StreamClosedError class EchoServer(TCPServer): async def handle_stream(self, stream, address): while True: try: data = await stream.read_until(b"\n") await stream.write(data) except StreamClosedError: break To make this server serve SSL traffic, send the ``ssl_options`` keyword argument with an `ssl.SSLContext` object. For compatibility with older versions of Python ``ssl_options`` may also be a dictionary of keyword arguments for the `ssl.SSLContext.wrap_socket` method.:: ssl_ctx = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH) ssl_ctx.load_cert_chain(os.path.join(data_dir, "mydomain.crt"), os.path.join(data_dir, "mydomain.key")) TCPServer(ssl_options=ssl_ctx) `TCPServer` initialization follows one of three patterns: 1. `listen`: single-process:: async def main(): server = TCPServer() server.listen(8888) await asyncio.Event.wait() asyncio.run(main()) While this example does not create multiple processes on its own, when the ``reuse_port=True`` argument is passed to ``listen()`` you can run the program multiple times to create a multi-process service. 2. `add_sockets`: multi-process:: sockets = bind_sockets(8888) tornado.process.fork_processes(0) async def post_fork_main(): server = TCPServer() server.add_sockets(sockets) await asyncio.Event().wait() asyncio.run(post_fork_main()) The `add_sockets` interface is more complicated, but it can be used with `tornado.process.fork_processes` to run a multi-process service with all worker processes forked from a single parent. `add_sockets` can also be used in single-process servers if you want to create your listening sockets in some way other than `~tornado.netutil.bind_sockets`. Note that when using this pattern, nothing that touches the event loop can be run before ``fork_processes``. 3. `bind`/`start`: simple **deprecated** multi-process:: server = TCPServer() server.bind(8888) server.start(0) # Forks multiple sub-processes IOLoop.current().start() This pattern is deprecated because it requires interfaces in the `asyncio` module that have been deprecated since Python 3.10. Support for creating multiple processes in the ``start`` method will be removed in a future version of Tornado. .. versionadded:: 3.1 The ``max_buffer_size`` argument. .. versionchanged:: 5.0 The ``io_loop`` argument has been removed. N� ssl_options�max_buffer_size�read_chunk_size�returnc C s� || _ i | _i | _g | _d| _d| _|| _|| _| j d urUt| j t �rWd| j vr,t d��t j � | j d �s>td| j d ��d| j v rYt j � | j d �s[td| j d ��d S d S d S d S )NF�certfilez%missing key "certfile" in ssl_optionsz certfile "%s" does not exist�keyfilezkeyfile "%s" does not exist)r �_sockets� _handlers�_pending_sockets�_started�_stoppedr r � isinstance�dict�KeyError�os�path�exists� ValueError)�selfr r r � r) �D/usr/local/CyberCP/lib/python3.10/site-packages/tornado/tcpserver.py�__init__| s. �� �� zTCPServer.__init__F�port�address�family�backlog�flags� reuse_portc C s" t ||||||d�}| �|� dS )aP Starts accepting connections on the given port. This method may be called more than once to listen on multiple ports. `listen` takes effect immediately; it is not necessary to call `TCPServer.start` afterwards. It is, however, necessary to start the event loop if it is not already running. All arguments have the same meaning as in `tornado.netutil.bind_sockets`. .. versionchanged:: 6.2 Added ``family``, ``backlog``, ``flags``, and ``reuse_port`` arguments to match `tornado.netutil.bind_sockets`. �r- r. r/ r0 r1 N)r � add_sockets�r( r, r- r. r/ r0 r1 �socketsr) r) r* �listen� s �zTCPServer.listenr5 c C s2 |D ]}|| j |�� < t|| j�| j|�� < qdS )a� Makes this server start accepting connections on the given sockets. The ``sockets`` parameter is a list of socket objects such as those returned by `~tornado.netutil.bind_sockets`. `add_sockets` is typically used in combination with that method and `tornado.process.fork_processes` to provide greater control over the initialization of a multi-process server. N)r �filenor �_handle_connectionr )r( r5 �sockr) r) r* r3 � s ��zTCPServer.add_sockets�socketc C s | � |g� dS )zASingular version of `add_sockets`. Takes a single socket object.N)r3 )r( r: r) r) r* � add_socket� s zTCPServer.add_socketc C s8 t ||||||d�}| jr| �|� dS | j�|� dS )a Binds this server to the given port on the given address. To start the server, call `start`. If you want to run this server in a single process, you can call `listen` as a shortcut to the sequence of `bind` and `start` calls. Address may be either an IP address or hostname. If it's a hostname, the server will listen on all IP addresses associated with the name. Address may be an empty string or None to listen on all available interfaces. Family may be set to either `socket.AF_INET` or `socket.AF_INET6` to restrict to IPv4 or IPv6 addresses, otherwise both will be used if available. The ``backlog`` argument has the same meaning as for `socket.listen <socket.socket.listen>`. The ``reuse_port`` argument has the same meaning as for `.bind_sockets`. This method may be called multiple times prior to `start` to listen on multiple ports or interfaces. .. versionchanged:: 4.4 Added the ``reuse_port`` argument. .. versionchanged:: 6.2 Added the ``flags`` argument to match `.bind_sockets`. .. deprecated:: 6.2 Use either ``listen()`` or ``add_sockets()`` instead of ``bind()`` and ``start()``. r2 N)r r r3 r �extendr4 r) r) r* �bind� s '�zTCPServer.bind� � num_processes� max_restartsc C s> | j rJ �d| _ |dkrt�||� | j}g | _| �|� dS )a� Starts this server in the `.IOLoop`. By default, we run the server in this process and do not fork any additional child process. If num_processes is ``None`` or <= 0, we detect the number of cores available on this machine and fork that number of child processes. If num_processes is given and > 1, we fork that specific number of sub-processes. Since we use processes and not threads, there is no shared memory between any server code. Note that multiple processes are not compatible with the autoreload module (or the ``autoreload=True`` option to `tornado.web.Application` which defaults to True when ``debug=True``). When using multiple processes, no IOLoops can be created or referenced until after the call to ``TCPServer.start(n)``. Values of ``num_processes`` other than 1 are not supported on Windows. The ``max_restarts`` argument is passed to `.fork_processes`. .. versionchanged:: 6.0 Added ``max_restarts`` argument. .. deprecated:: 6.2 Use either ``listen()`` or ``add_sockets()`` instead of ``bind()`` and ``start()``. Tr> N)r r �fork_processesr r3 )r( r? r@ r5 r) r) r* �start s " zTCPServer.startc C sN | j rdS d| _ | j�� D ]\}}|�� |ksJ �| j�|�� |�� q dS )z�Stops listening for new connections. Requests currently in progress may still continue after the server is stopped. NT)r r �itemsr7 r �pop�close)r( �fdr9 r) r) r* �stop2 s �zTCPServer.stop�streamc C s t � �)ad Override to handle a new `.IOStream` from an incoming connection. This method may be a coroutine; if so any exceptions it raises asynchronously will be logged. Accepting of incoming connections will not be blocked by this coroutine. If this `TCPServer` is configured for SSL, ``handle_stream`` may be called before the SSL handshake has completed. Use `.SSLIOStream.wait_for_handshake` if you need to verify the client's certificate or use NPN/ALPN. .. versionchanged:: 4.2 Added the option for this method to be a coroutine. )�NotImplementedError)r( rH r- r) r) r* � handle_streamA s zTCPServer.handle_stream� connectionc C s> | j d urXts J d��z t|| j ddd�}W nA tjy6 } z|jd tjkr1|�� W Y d }~S � d }~w tjyW } zt |�t j t j fv rR|�� W Y d }~S � d }~ww z5| j d urht || j| jd�}n t|| j| jd�}| �||�}|d ur�t�� �t�|�dd� � W d S W d S ty� tjd dd � Y d S w ) Nz(Python 2.6+ and OpenSSL required for SSLTF)� server_side�do_handshake_on_connectr )r r c S s | � � S )N)�result)�fr) r) r* �<lambda>� s z.TCPServer._handle_connection.<locals>.<lambda>z Error in connection callback)�exc_info)r �sslr �SSLError�args� SSL_ERROR_EOFrE r: �errorr �errno� ECONNABORTED�EINVALr r r r rJ r �current� add_futurer �convert_yielded� Exceptionr )r( rK r- �errrH �futurer) r) r* r8 T sR �� �� �� �� �z TCPServer._handle_connection)NNN)r> N)r N) �__name__� __module__� __qualname__�__doc__r r r �strr rR � SSLContext�intr+ r: � AF_UNSPECr � AddressFamily�boolr6 r r3 r; r= rB rG r �tupler rJ r8 r) r) r) r* r + s� R���� �&������� �"������� �5��� � *�� � r )"rc rW r$ r: rR �tornador � tornado.logr �tornado.ioloopr �tornado.iostreamr r �tornado.netutilr r r r r � tornado.utilr �typingr r r r r r � TYPE_CHECKINGr r �objectr r) r) r) r* �<module> s"
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