[英]why is tornado in python blocking my requests
I have this fairly simple code, taken from an example. 我有一个非常简单的代码,摘自一个示例。
#!/usr/bin/python
import tornado.ioloop
import tornado.web
import tornado.gen
import time
class MainHandler(tornado.web.RequestHandler):
@tornado.web.asynchronous
@tornado.gen.engine
def get(self):
for i in range(1,10):
self.write("%d<br>" % i)
self.flush()
yield tornado.gen.Task(tornado.ioloop.IOLoop.instance().add_timeout, time.time() + 1)
self.finish()
application = tornado.web.Application([
(r"/", MainHandler),
])
if __name__ == "__main__":
application.listen(8888)
tornado.ioloop.IOLoop.instance().start()
It isn't behaving how i'm expecting it to. 它不符合我的期望。 If i open a browser window and point it to localhost:8888/, it will show 1 [pause 1 sec] 2 [pause 1 sec], etc. If i open a second tab doing the same request, it will block until the first request is finished.
如果我打开浏览器窗口并将其指向localhost:8888 /,它将显示1 [pause 1 sec] 2 [pause 1 sec],依此类推。如果我打开另一个执行相同请求的选项卡,它将阻塞直到第一个请求已完成。 What am i missing?
我想念什么?
似乎我应该使用其他浏览器或隐身窗口。
@Germano is right, it is the chrome shares the same connection for the same url.you can test with below code. @Germano是正确的,它是chrome共享相同的连接,并且使用相同的url。您可以使用以下代码进行测试。
#coding:utf8
from tornado import ioloop
from tornado import web
from tornado import gen
class MainHandler(web.RequestHandler):
@gen.coroutine
def get(self):
client_address = self.request.connection.stream.socket.getpeername()
print repr(client_address), 'enter'
yield gen.sleep(10)
self.write("Hello, world")
print repr(client_address), 'leave'
self.finish()
if __name__ == "__main__":
application = web.Application([
(r"/", MainHandler),
])
application.listen(8888)
ioloop.IOLoop.current().start()
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