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curl/docs/cmdline-opts/retry.d
Jay Satiro 21445a76df retry.d: Clarify transient 5xx HTTP response codes
- Clarify the only 5xx response codes that are treated as transient are
  500, 502, 503 and 504.

Prior to this change it said it treated all 5xx as transient, but the
code says otherwise.

Ref: https://github.com/curl/curl/blob/curl-7_75_0/src/tool_operate.c#L462-L495

Closes https://github.com/curl/curl/pull/6724
2021-03-12 03:16:22 -05:00

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D

Long: retry
Arg: <num>
Added: 7.12.3
Help: Retry request if transient problems occur
Category: curl
---
If a transient error is returned when curl tries to perform a transfer, it
will retry this number of times before giving up. Setting the number to 0
makes curl do no retries (which is the default). Transient error means either:
a timeout, an FTP 4xx response code or an HTTP 408, 429, 500, 502, 503 or 504
response code.
When curl is about to retry a transfer, it will first wait one second and then
for all forthcoming retries it will double the waiting time until it reaches
10 minutes which then will be the delay between the rest of the retries. By
using --retry-delay you disable this exponential backoff algorithm. See also
--retry-max-time to limit the total time allowed for retries.
Since curl 7.66.0, curl will comply with the Retry-After: response header if
one was present to know when to issue the next retry.
If this option is used several times, the last one will be used.