How to set a timeout for AsyncHTTPClient?

[moonspirit]

hi, guys,

Can i set a timeout in AsyncHTTPClient?
That means, if we didn't get the fetch response in configured
time, my callback will get called with timeout error info.

[simp x]

see
httpclient = tornado.httpclient.AsyncHTTPClient()
httprequest = tornado.httpclient.HTTPRequest(url,headers=final_headers,method=method,body=data,connect_timeout=240.0)
you can set the connect_timeout

2011/8/4 moonspirit <moonspi...@gmail.com>:

[yuexuan chen]

Just found that connect_timeout and request_timeout didn't work as expected.

i have set both connection_timeout and request_timeout to 1, i can still get the http response after 150ms.

2011/8/4 simp x <sim...@gmail.com>

--
Best Regards,
yuexuan

[Ben Darnell]

The timeouts are in seconds - use 0.1 to set a 100ms timeout.  If you only set one of the timeout variables, use request_timeout, which governs the whole request, instead of connect_timeout, which only covers the initial connection.  

-Ben

[yuexuan chen]

set the timeout to 0.1 won't work, i see the following line:

    curl.setopt(pycurl.CONNECTTIMEOUT, int(request.connect_timeout))

    curl.setopt(pycurl.TIMEOUT, int(request.request_timeout))

if we set it to 0.1, it will pass 0 to pycurl and will never get timeout.

So we must set the timeout above 1 if we need.

2011/8/5 Ben Darnell <b...@bendarnell.com>

--
Best Regards,
yuexuan

[Ben Darnell]

You should use SimpleAsyncHTTPClient instead of CurlAsyncHTTPClient (this has been the default since tornado 2.0).  It should support fractional timeouts correctly.

-Ben

[Li Weijian]

I was wondering how to set  timeout for AsyncHTTPClient nowadays?

I wrote a testing web server for network latency such like this:

class SlowHandler(victimweb.RequestHandler):

    def post(self):

        sleep(5)

        self.write("done");

Then I use AsyncHTTPClient to fetch this url, and encountering a lot of  `HTTPError: HTTP 599: Timeout `

在 2011年8月18日星期四UTC+8上午1时12分28秒，Ben Darnell写道：

[Ben Darnell]

On Tue, Jun 11, 2013 at 11:39 AM, Li Weijian <liweiji...@gmail.com> wrote:

I was wondering how to set  timeout for AsyncHTTPClient nowadays?

I wrote a testing web server for network latency such like this:

class SlowHandler(victimweb.RequestHandler):

    def post(self):

        sleep(5)

        self.write("done");

If you sleep in a tornado application, nothing else can happen on the IOLoop while the thread is asleep.  You need to use asynchronous methods like IOLoop.add_timeout instead of time.sleep.

-Ben

[Li Weijian]

Thanks Ben, I got it

class SlowHandler(tornado.web.RequestHandler):

    #def post(self):

    @tornado.web.asynchronous

    def get(self):

        self.get_data(callback=self.on_foolish);

    def get_data(self, callback):

        num = randint(3,8)

        tornado.ioloop.IOLoop.instance().add_timeout(time()+num,

                lambda: callback(num))

    def on_foolish(self, data):

        self.write("Sleep for %d seconds" % data)

        self.finish()

在 2013年6月12日星期三UTC+8上午10时36分52秒，Ben Darnell写道：