2

Given following example usage:

adapter = HTTPAdapter(max_retries=Retry(
    total=5,
    backoff_factor=0.1,
    status_forcelist=[429, 500, 502, 503, 504],
    method_whitelist=["HEAD", "GET", "OPTIONS"]
))
session = requests.Session()
session.mount("http://", adapter)
session.mount("https://", adapter)
rsp = session.post(url, json=my_json, params=my_params)

How do I tell how many retries were made? I'm trying to debug/diagnose/resolve an issue posted in this related question

Alternatively, is there a different usage of these libs that provides this?

Kache
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2 Answers2

1

You can get the list of retries by accessing the retries.history property of the underlying urllib3.response.HTTPResponse object used by the requests library.

In your case, that would be:

rsp.raw.retries.history
Enrico Marchesin
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  • If you could show a simple example of how to access the `history` of retried attempts, then that would be great. Because, if you try to access `raw.retries.history` either it will throw an exception or if the first attempt gets successfully done then it will give you an empty `list`. With `try/except` it will then skip to the `except` block. – Shriniwas Sep 30 '22 at 09:05
-1

In a worse case (if the first request will get status code in response 429, 500, 502, 503, 504), there will be 5 retries with a backoff factor of 0.1. You can look there the explanation of each parameter. https://urllib3.readthedocs.io/en/latest/reference/urllib3.util.html#module-urllib3.util.retry

Alex Fedorov
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    Using wall clock timings to blackbox feels like a pretty rough last-resort. I'd probably sooner implement retries myself. – Kache May 10 '21 at 17:19