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More HTTP status codes to retry on #4473

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merged 6 commits into from
Oct 24, 2017
Merged

More HTTP status codes to retry on #4473

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307db7e
Add `--retry-status <HTTP code>` to allow specifying custom HTTP stau…
May 9, 2017
bda0f5e
Merge remote-tracking branch 'upstream/master'
Jul 21, 2017
600fbba
Merge remote-tracking branch 'upstream/master'
Oct 19, 2017
864b669
stripping option related code, hardcoding the statuses
Oct 19, 2017
b597e98
Reword the news file
pradyunsg Oct 19, 2017
a425eb9
changing ndash to regular ascii dash
vartec Oct 23, 2017
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4 changes: 4 additions & 0 deletions news/4473.feature
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
pip now retries on more HTTP status codes, for intermittent failures.

Previously, it only retried on the standard 503. Now, it also retries on 500
(transient failures on AWS S3), 520 and 527 (transient failures on Cloudflare).
4 changes: 3 additions & 1 deletion src/pip/_internal/download.py
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Expand Up @@ -348,7 +348,9 @@ def __init__(self, *args, **kwargs):
# connection got interrupted in some way. A 503 error in general
# is typically considered a transient error so we'll go ahead and
# retry it.
status_forcelist=[503],
# A 500 may indicate transient errror in Amazon S3
# A 520 or 527 - may indicate transient errror in CloudFlare
status_forcelist=[500, 503, 520, 527],

# Add a small amount of back off between failed requests in
# order to prevent hammering the service.
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