Fix requests per second, proper error responses, compilation related to the curl-sys library #3405
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Motivation
Fixes #3402. This PR includes a patch for #3403, in order to get this code to compile.
Test Plan
Manually tested with low rps, verified that the requests per second did not become 1 after the burst quota was exhausted.
Additional Details
This is our patch fix, so feel free to adapt this code as necessary. We use
per_nanosecond
instead ofper_second
for the replenishment rate, with the goal of replenishing the burst rate in full every second. Our primary concern was the rps, which is why the 429 (Too many requests) error in particular is handled but other errors are defaulted to a 500 (Internal Server Error). Furthermore, related to issue #3403, I had to bump the rust version in order to get snarkos to compile.