Queries waiting on a dead Replier

[James Powell]

Currently, a Query will wait till timeout for a response, even if the Responder dies before responding. For small timeouts, this is not a major issue, but timeouts can be very long or even infinite.

Had a case where I was infinitely waiting for an Actor to shutdown, but teh Actor hard stopped, and my hung Query never could return.

Idea: watch the validity of the Address queried, and kick out with an error if it dies.

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[James Powell]

Idea: Special “Redeem Future” with input for Address

[James Powell]

Implemented. New Redeem Future method off pallet for now, but used in Query

[James Powell]

Problem, what if we are waiting for “Shutdown” message, and Address is destroyed just before message sent?

[James Powell]

Made it so it would wait up to one extra second for a late message. Also made only active on teh new VIM version, to avoid possible problems with old code.