Refactoring the timeout retries into a more general 'retry policy' with
support for retrying on HTTP 429 (Too Many Requests) and other responses
with a `Retry-After` header
The delay between requests is controlled by a combination of a 'backoff'
(currently only a simple linear backoff), and honouring the
`Retry-After` value (longest delay wins)
This makes the 'rate limiter' an optional argument as well, removing the
use of `nil` when one isn't supplied
Signed-off-by: David Ackroyd <daveo.ackroyd@gmail.com>
* Initial rework of rework of requester - WIP
* Implementing and checking rate limits - WIP
* implemented coinbene rate limiting shenanigans
* add in remaining WIP
* fixy
* use authenticated rate limit
* drop ceiling as this can be done with a counter later
* add functionality to struct
* purge config options for rate limiting so as to keep things minimal
* prepare futures and swap rate limiting for implementation
* Address linter issues
* Addressed nits, fixed race
* fix linter issue
* remove global var as this was only setting when newrequester was called
* moved rate limit functionality into its own file
* Update Bitfinex with correct rate limit and test endpoints (WIP)
* finish off bitfinex adjustments
* fixes
* fix linter issues
* slowed rate for coinbasepro
* drop rate limit for huobi as the doc times have intermittent 429 issues.
* Set MACOSX_DEPLOYMENT_TARGET to remove linking warning
* Addr Thrasher nits
* Addr glorious nits
* unexport do request function
* fixed nitorinos
* Fixed something I missed
* move disabled rate limiter into loadexchange and use interface functionality
* Add temp quick fix
