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Asked: 2026-06-06T19:20:44+00:00

I am polling my python server by ajax request. When server is on I

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I am polling my python server by ajax request. When server is on I am getting status code proper as 200, but when I close the server using CTRL+C, i notice that my polling continues. When I printed status code in console got it 0 when server is closed.

When i hit that ajax url on browser with closed server i get temporarily unavailable.

I can’t understand why I am getting status code 0? It should be either 404(Not found) or 503(Temporarily not available).

Thanks

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1 Answer

  1. Editorial Team

    The server didn’t send a response, so there can’t be an HTTP status code. See the specification:

    The status attribute must return the result of running these steps:

    1. If the state is UNSENT or OPENED, return 0 and terminate these steps.

    2. If the error flag is set, return 0 and terminate these steps.

    3. Return the HTTP status code.

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