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Update gRPC to the latest version #499

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merged 1 commit into from
Aug 5, 2019

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saschagrunert
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The mentioned issue in 3d04f3b is
related to a limitation of cmux, where clients may block until they
receive a SETTINGS frame. My tests were only related to CRI-O, where
an appropriate fix in the project should solve the issue from a general
perspective.

Nevertheless, a general workaround for end-users trying to connect to a
cmux based implementation might be exporting the environment variable
GRPC_GO_REQUIRE_HANDSHAKE=off. This has been documented in the
README.md as well.

References:

The mentioned issue in 3d04f3b is
related to a limitation of cmux, where clients may block until they
receive a `SETTINGS` frame. My tests were only related to CRI-O, where
an appropriate fix in the project should solve the issue from a general
perspective.

Nevertheless, a general workaround for end-users trying to connect to a
cmux based implementation might be exporting the environment variable
`GRPC_GO_REQUIRE_HANDSHAKE=off`. This has been documented in the
README.md as well.

References:
- grpc/grpc-go#2636
- https://github.com/soheilhy/cmux#limitations
- cri-o/cri-o#2697

Signed-off-by: Sascha Grunert <[email protected]>
@k8s-ci-robot k8s-ci-robot added the cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. label Aug 5, 2019
@k8s-ci-robot k8s-ci-robot added the size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. label Aug 5, 2019
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/lgtm
/approve

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Aug 5, 2019
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: feiskyer, saschagrunert

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@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Aug 5, 2019
@k8s-ci-robot k8s-ci-robot merged commit 7f76abe into kubernetes-sigs:master Aug 5, 2019
@saschagrunert saschagrunert deleted the grpc-latest branch August 5, 2019 12:38
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3 participants