Add support for server-side request cancellation #396
Merged
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Problem
Performing some server computations may be pretty expensive and in the case where the channel gets shutdown, either because the client hung up or the H2 stream was cancelled (due to a timeout, for example), the server will continue that processing in vein.
Solution
Propagate cancellation into the service handling logic in case it can save itself some work or potentially notify its own backends.