[Backport 1.18] Enable Windows workers (#17555) #17814
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added 2 commits
August 23, 2021 14:23
Fixing an issue where Envoy workers are not picking up connections on Windows. The root cause of the issue is in the Windows kernel. There are two issues that we need to consider: If we want to listen from a duplicated socket then we need to duplicate it after we call listen on the original socket. If duplicated sockets try to accept at the same time, then one of the accept calls might block. Even if the sockets are non-blocking. The best way to work around that issue is to only listen/accept connections from the first worker thread and then use ExactConnectionBalance to dispatch the connection to another worker thread. This is a temporary solution until the underlying issue is fixed on Windows. Signed-off-by: Sotiris Nanopoulos <sonanopo@microsoft.com>
Signed-off-by: Sotiris Nanopoulos <sonanopo@microsoft.com>
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Signed-off-by: Sotiris Nanopoulos <sonanopo@microsoft.com>
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/retest |
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Retrying Azure Pipelines: |
Signed-off-by: Sotiris Nanopoulos <sonanopo@microsoft.com>
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cc @wrowe |
davinci26
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dmitri-d
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Aug 24, 2021
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This lgtm, but with a fat warning that I don't know much about Windows idiosyncrasies. |
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/retest |
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Retrying Azure Pipelines: |
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Need to merge main here, I believe compile_time_options phase is fixed on main. |
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#17868 needs to land beforehand. |
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@mathetake was correct, need to merge to branch one more time here @davinci26 and I think it will pass CI to be merged. |
added 2 commits
August 30, 2021 17:18
Signed-off-by: Sotiris Nanopoulos <sonanopo@microsoft.com>
wrowe
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Aug 31, 2021
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Commit Message:
Backport 1260c5c to 1.18
Fixing an issue where Envoy workers are not picking up connections on Windows.
The root cause of the issue is in the Windows kernel.
There are two issues that we need to consider:
If we want to listen from a duplicated socket then we need to duplicate it after we call listen on the original socket.
If duplicated sockets try to accept at the same time, then one of the accept calls might block. Even if the sockets are non-blocking.
The best way to work around that issue is to only listen/accept connections from the first worker thread and then use ExactConnectionBalance to dispatch the connection to another worker thread. This is a temporary solution until the underlying issue is fixed on Windows.
Signed-off-by: Sotiris Nanopoulos sonanopo@microsoft.com
Risk Level: Low
Testing: Manual testing and tests
Docs Changes: Added
Release Notes: Added a bug fix note
Platform Specific Features: N/A