errors: change timeout errors from 408 to 500 HTTP status code #1292
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Whilst it is logically correct to use 408 for the timeout and script timeout errors, it causes a collision with HTTP semantics implement in HTTP clients. To support Keep-Alive we allow retries in HTTP clients and if a client sees code 408 it thinks that the server has gone away and retries the request. This causes Execute Script, Navigate To, and Refresh commands to be sent twice with some HTTP clients. This is a backwards incompatible change to WebDriver in order to not break HTTP/1.1 Keep-Alive. Fixes: #1287
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This change is backwards incompatible but we need a fix for this in order to support Keep-Alive and persistent connections. This PR can’t land until we have tests ready and I will supply these downstream in https://bugzilla.mozilla.org/show_bug.cgi?id=1484941. |
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@AutomatedTester The tests have landed. |
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Whilst it is logically correct to use 408 for the timeout and script
timeout errors, it causes a collision with HTTP semantics implement
in HTTP clients. To support Keep-Alive we allow retries in HTTP
clients and if a client sees code 408 it thinks that the server has
gone away and retries the request.
This causes Execute Script, Navigate To, and Refresh commands to
be sent twice with some HTTP clients.
This is a backwards incompatible change to WebDriver in order to
not break HTTP/1.1 Keep-Alive.
Fixes: #1287