How can I set a timeout on a Tornado HTTP request?

Question

I am using the Tornado async HTTP client. I want to raise an exception if the request takes more than X milliseconds. How can I achieve this?

Answer 1

使用request_timeout参数，默认为20秒（接受浮点数，因此您可以在100ms内使用例如0.1）。

Answer 2

from the Tornado docs:

http://www.tornadoweb.org/en/stable/httpclient.html#request-objects

Use these named parameters in tornado.httpclient.HTTPRequest or in AsyncHTTPClient.fetch

connect_timeout (float) – Timeout for initial connection in seconds

request_timeout (float) – Timeout for entire request in seconds

Since they are floats, you should be able to specify the timeout in milliseconds, eg .1 will be 100 milliseconds