Call handler.poll_ready() before handler.call()
#437
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According to the tower::Service documentation and API contract, `poll_ready` must be called and a `Poll:Ready` must be obtained before invoking `call`
nmoutschen
approved these changes
Mar 3, 2022
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I discovered this issue while trying to build a Service router, using the
tower::steermodule, which panics ifpoll_readyhas not been called. I was able to work around this issue by implementing the functionality myself, but after digging into the tower Service docs, this appears to be mandated by the API:According to the tower::Service documentation and API contract,
poll_readymust be called and aPoll:Readymust be obtained before invokingcall.Issue #, if available:
Description of changes:
I wrapped the body of the handler invoking function in a call to
poll_ready.See documentation for tower::Service::call
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