I am using Python and translating small chunks of imagery out of S3 and occasionally run into errors like this:
2024-12-17 18:06:16.201 MST: ERROR 1: Request for 372390946-372700449 failed with response_code=0 2024-12-17 18:06:16.201 MST: ERROR 1: Request for 2028508162-2028817665 failed with response_code=0 2024-12-17 18:06:16.201 MST: ERROR 1: Request for 2030984194-2031293697 failed with response_code=0 2024-12-17 18:06:16.202 MST: ERROR 1: Request for 1476778594-1477088097 failed with response_code=0 2024-12-17 18:06:16.202 MST: ERROR 1: Request for 374247970-374557473 failed with response_code=0 Even with gdal.UseExceptions() and GDAL_HTTP_MAX_RETRY / GDAL_HTTP_RETRY_DELAY set, it doesn’t seem to do anything other than log this error and proceed. The end result is that my output file has blank pixels in it. I have been staring at the code a bit to understand what it means, particularly the response_code being 0. I see this in the libcurl docs: > The stored value is zero if no server response code has been received. I still don’t quite know why this happens but could be that some AWS server closed a connection early or something. But is there any way to force a retry? I see that GDAL_HTTP_RETRY_CODES was added recently. If I set it to “ALL” will that ensure that a situation like this results in a retry even on a closed connection? I am not set up to easily reproduce this or even to see a stack trace, so I’m not sure what leads to this error. It doesn’t happen very often, but it’s disruptive when it does happen because it’s hard to catch.
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