socket(). TCPServer.bind(). TCPServer.start(). TCPServer.stop(). TCPServer.handle stream(). # tornado.ioloop — Main event loop An I/O event loop for non-blocking sockets. In Tornado 6.0, IOLoop is a wrapper coroutines. If maxsize is 0 (the default) the queue size is unbounded. import asyncio from tornado.ioloop import IOLoop from tornado.queues import Queue q = Queue(maxsize=2) async def consumer(): curl_httpclient now supports non-ASCII (ISO-8859-1) header values, same as simple_httpclient. ### tornado.ioloop - PeriodicCallback now understands coroutines and will not start multiple copies if a previous

Overflow • Wiki Hello, world Here is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): function to start the server. A minimal “hello world” example looks something like this: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): connections, making it ideal for long polling. Here is a simple “Hello, world” example app: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self):

• Wiki ## HELLO, WORLD Here is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): function to start the server. A minimal “hello world” example looks something like this: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): connections, making it ideal for long polling. Here is a simple “Hello, world” example app: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self):

Overflow • Wiki Hello, world Here is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): function to start the server. A minimal “hello world” example looks something like this: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): connections, making it ideal for long polling. Here is a simple “Hello, world” example app: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self):

Overflow • Wiki Hello, world Here is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): function to start the server. A minimal “hello world” example looks something like this: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): connections, making it ideal for long polling. Here is a simple “Hello, world” example app: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self):

Parameters delegate – a HTTPServerConnectionDelegate ### 6.4 Asynchronous networking ##### 6.4.1 tornado.ioloop — Main event loop An I/O event loop for non-blocking sockets. In Tornado 6.0, IOLoop is a wrapper import asyncio import errno import functools (continues on next page) import socket import tornado.ioloop from tornado.ioloream import IOSream async def handle_connection(connection, address): stream connected with IOSream.connect. A very simple (and broken) HTTP client using this class: import tornado.ioloop import tornado.iostream import socket async def main(): s = socket.socket(socket.AF_INET

inks] ## Hello, world Here is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): function to start the server. A minimal “hello world” example looks something like this: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): org/wiki/Push_technology#Long_polling]. Here is a simple “Hello, world” example app: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self):

inks] ## Hello, world Here is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): function to start the server. A minimal “hello world” example looks something like this: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): org/wiki/Push_technology#Long_polling]. Here is a simple “Hello, world” example app: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self):

httputil.HTTPInputError if any other transfer encoding is used. 6.4 Asynchronous networking 6.4.1 tornado.ioloop — Main event loop An I/O event loop for non-blocking sockets. In Tornado 6.0, IOLoop is a wrapper unbounded. 130 Chapter 6. Documentation Tornado Documentation, Release 6.5.1 import asyncio from tornado.ioloop import IOLoop from tornado.queues import Queue q = Queue(maxsize=2) async def consumer(): async that is not using HTTP/1.0. 166 Chapter 6. Documentation Tornado Documentation, Release 6.5.1 tornado.ioloop • Fixed a bug in which contextvars that were set when the event loop was created were not available

non-negative hexadecimal integer from a string. ### 6.4 Asynchronous networking ##### 6.4.1 tornado.ioloop — Main event loop An I/O event loop for non-blocking sockets. In Tornado 6.0, IOLoop is a wrapper consumer coroutines. If maxsize is 0 (the default) the queue size is unbounded. import asyncio from tornado.ioloop import IOLoop from tornado.queues import Queue q = Queue(maxsize=2) async def consumer(): garbage collection which could cause warnings like “Task was destroyed but it is pending!”. ### tornado.ioloop • IOLoop.add_callback_from_signal is suspected to have been broken since Tornado 5.0 and will