While uploading big files, > 10MB, through a squid V5.6, I noticed that they failed and/or were retried.
The error has been logged multiple times in the logs:
1671092710.452 423 ::1 TCP_MISS_ABORTED/000 0 PUT http://YOUR_URL - FIRSTUP_PARENT/YOUR_UPSTREAM_PROXY -
How can I get this big files upload working without errors?
After multiple research a squid config test I found that it is most probably a bug. See https://bugs.squid-cache.org/show_bug.cgi?id=5214
The workaround is to set the param client_request_buffer_max_size to a value that cover your maximum upload file size, and/or to enable the multi-part feature on your client side, if available.
I ran some tests and didn't noticed any host resource problem even with a value of 100MB.