r"""A non-blocking, single-threaded HTTP server.
翻译： 一个非阻塞的单线程HTTP服务器
A server is defined by a subclass of `.HTTPServerConnectionDelegate`,
or, for backwards compatibility, a callback that takes an
`.HTTPServerRequest` as an argument. The delegate is usually a
`tornado.web.Application`.
翻译：服务器由".HTTPServerConnectionDelegate"的子类定义，或者，对于向后兼容，一个回调".HTTPServerRequest"作为一个参数。委托通常是 "tornado.web.Application"。
`HTTPServer` supports keep-alive connections by default
(automatically for HTTP/1.1, or for HTTP/1.0 when the client
requests ``Connection: keep-alive``).
翻译：默认情况下，HTTPServer支持keep-alive连接（自动为HTTP/1.1，或HTTP/1.0，当客户端请求的连接:维生”)。
If ``xheaders`` is ``True``, we support the
``X-Real-Ip``/``X-Forwarded-For`` and
``X-Scheme``/``X-Forwarded-Proto`` headers, which override the
remote IP and URI scheme/protocol for all requests. These headers
are useful when running Tornado behind a reverse proxy or load
balancer. The ``protocol`` argument can also be set to ``https``
if Tornado is run behind an SSL-decoding proxy that does not set one of
the supported ``xheaders``.
翻译：
如果"xheader"是"True"，我们支持``X-Real-Ip``/``X-Forwarded-For````X-Scheme``/``X-Forwarded-Proto``的头，它覆盖了
所有请求的远程IP和URI模式/协议。这些头当在反向代理或负载下运行Tornado时是有用的均衡器。"protocol协议"的参数也可以设置为"https"。
如果Tornado是在一个SSL-decoding的代理后面运行的，它不会设置一个支持的“xheaders””。
By default, when parsing the ``X-Forwarded-For`` header, Tornado will
select the last (i.e., the closest) address on the list of hosts as the
remote host IP address. To select the next server in the chain, a list of
trusted downstream hosts may be passed as the ``trusted_downstream``
argument. These hosts will be skipped when parsing the ``X-Forwarded-For``
header.
翻译：
默认情况下，当解析``X-Forwarded-For``的header时，Tornado将会
选择最后一个（例如最接近的）在主机列表上的地址
远程主机IP地址。要选择链中的下一个服务器，一个列表
受信任的下游主机可以作为``trusted_downstream``“托管”
论点。在解析``X-Forwarded-For``时，这些主机将被跳过头。
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.wrap_socket` method.::
翻译：
要使这个服务器服务于SSL流量，请发送“ssloptions”关键字
用“ssl”进行论证。SSLContext”对象。为了与旧版本的兼容性
Python“ssloptions”的版本也可能是关键字的字典
关于“ssl”的争论。wrap_socket”方法。
针对https的做法
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"))
HTTPServer(applicaton, ssl_options=ssl_ctx)
from tornado.httpserver import HTTPServer
from tornado.ioloop import IOLoop
`HTTPServer` initialization follows one of three patterns (the
initialization methods are defined on `tornado.tcpserver.TCPServer`):
. `~tornado.tcpserver.TCPServer.listen`: simple single-process:: 单进程
server = HTTPServer(app)
server.listen()
IOLoop.current().start()
In many cases, `tornado.web.Application.listen` can be used to avoid
the need to explicitly create the `HTTPServer`.
. `~tornado.tcpserver.TCPServer.bind`/`~tornado.tcpserver.TCPServer.start`:
simple multi-process::
server = HTTPServer(app)
server.bind()
server.start() # Forks multiple sub-processes // Forks 多个单进程
IOLoop.current().start()
When using this interface, an `.IOLoop` must *not* be passed
to the `HTTPServer` constructor. `~.TCPServer.start` will always start
the server on the default singleton `.IOLoop`.
. `~tornado.tcpserver.TCPServer.add_sockets`: advanced multi-process:: # 高级的多进程， 这个好处就是同脚本启动多个不同端口服务， 2则不可以
sockets = tornado.netutil.bind_sockets()
tornado.process.fork_processes() #
server = HTTPServer(app)
server.add_sockets(sockets)
IOLoop.current().start()
The `~.TCPServer.add_sockets` interface is more complicated,
but it can be used with `tornado.process.fork_processes` to
give you more flexibility in when the fork happens.
`~.TCPServer.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`.
.. versionchanged:: 4.0
Added ``decompress_request``, ``chunk_size``, ``max_header_size``,
``idle_connection_timeout``, ``body_timeout``, ``max_body_size``
arguments. Added support for `.HTTPServerConnectionDelegate`
instances as ``request_callback``.
.. versionchanged:: 4.1
`.HTTPServerConnectionDelegate.start_request` is now called with
two arguments ``(server_conn, request_conn)`` (in accordance with the
documentation) instead of one ``(request_conn)``.
.. versionchanged:: 4.2
`HTTPServer` is now a subclass of `tornado.util.Configurable`.
.. versionchanged:: 4.5
Added the ``trusted_downstream`` argument.
"""
tornado https 该怎么写
翻译：
要使这个服务器服务于SSL流量，请发送“ssloptions”关键字
用“ssl”进行论证。SSLContext”对象。为了与旧版本的兼容性
Python“ssloptions”的版本也可能是关键字的字典
关于“ssl”的争论。wrap_socket”方法。 针对https的做法 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"))
HTTPServer(applicaton, ssl_options=ssl_ctx) 方法二、
server = HTTPServer(application, max_buffer_size=504857600, ssl_options={"certfile":"/etc/letsencrypt/live/
zkey.cc/fullchain.pem", "keyfile":"/etc/letsencrypt/live/zkey.cc/privkey.pem"})
zkey.cc/fullchain.pem", "keyfile":"/etc/letsencrypt/live/zkey.cc/privkey.pem"}) 第一种启动方式
from tornado.httpserver import HTTPServer
from tornado.ioloop import IOLoop `HTTPServer` initialization follows one of three patterns (the
initialization methods are defined on `tornado.tcpserver.TCPServer`): 1. `~tornado.tcpserver.TCPServer.listen`: simple single-process:: 单进程 server = HTTPServer(app)
server.listen(8888)
IOLoop.current().start() In many cases, `tornado.web.Application.listen` can be used to avoid
the need to explicitly create the `HTTPServer`.
第二种启动方式
from tornado.httpserver import HTTPServer
from tornado.ioloop import IOLoop
2. `~tornado.tcpserver.TCPServer.bind`/`~tornado.tcpserver.TCPServer.start`:
simple multi-process:: server = HTTPServer(app)
server.bind(8888)
server.start(0) # Forks multiple sub-processes // Forks 多个单进程
IOLoop.current().start() When using this interface, an `.IOLoop` must *not* be passed
to the `HTTPServer` constructor. `~.TCPServer.start` will always start
the server on the default singleton `.IOLoop`.
第三种启动方式
from tornado.httpserver import HTTPServer
from tornado.ioloop import IOLoop
3. `~tornado.tcpserver.TCPServer.add_sockets`: advanced multi-process:: # 高级的多进程， 这个好处就是同脚本启动多个不同端口服务， 2则不可以 sockets = tornado.netutil.bind_sockets(8888)
tornado.process.fork_processes(0) #
server = HTTPServer(app)
server.add_sockets(sockets)
IOLoop.current().start() The `~.TCPServer.add_sockets` interface is more complicated,
but it can be used with `tornado.process.fork_processes` to
give you more flexibility in when the fork happens.
`~.TCPServer.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`.