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Don't close gRPC connections on connection refresh #2826

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kostko opened this issue Apr 7, 2020 · 0 comments · Fixed by #2891
Closed

Don't close gRPC connections on connection refresh #2826

kostko opened this issue Apr 7, 2020 · 0 comments · Fixed by #2891
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c:common Category: common libraries c:deps Category: external dependencies

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@kostko
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kostko commented Apr 7, 2020 •
edited

PR #2822 introduced connection refresh on local TLS certificate rotation. This is required because otherwise the server will start rejecting the old client certificates. However, currently connection refresh is implemented by closing and redialing the (virtual) gRPC client connection.

Once grpc/grpc-go#3491 is released (gRPC 1.29) we should just emit an empty resolver state (via UpdateState) to clear any subconnections and then push actual addresses to re-establish them.
@kostko kostko added c:common Category: common libraries c:deps Category: external dependencies s:blocked Status: blocked on other work labels Apr 7, 2020
@kostko kostko removed the s:blocked Status: blocked on other work label May 6, 2020
@kostko kostko mentioned this issue May 6, 2020
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go/runtime/committee: Don't close gRPC connections on connection refresh oasisprotocol/oasis-core
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