Retry auths when using the "resty" http ng backend #961
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mikz
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Nov 28, 2018
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Rebased and fixed the changelog conflict. |
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This PR implements a change in the backend client module to retry authorizations when backend closes the connection and the client uses the resty implementation.
While testing the 3scale batcher policy, I got very sporadic errors because the authorization call to the 3scale backend failed. In those cases, APIcast was sending an auth request after backend closed the keep-alive connection because of a timeout. In those cases, when using the "resty" backend of the http client, the response has status = 0 and error = "closed". Authorizes are idempotent, so they can be retried safely in those cases.