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Decrease the default 'TcpKeepAliveTime' for SDK3

Description

Currently the value for 'TcpKeepAliveTime' (as covered on https://docs.couchbase.com/dotnet-sdk/2.7/client-settings.html#dotnet-clientconfiguration-settings) is 2 hours.

This is a very long time and in some environments this is not a very sensible default; for example, for Azure all external connections have a tcp timeout of 4 minutes.
Clearly the .NET SDK connections will not start triggering the tcp keepalives before this timeout kicks in.

I guess the 2 hours was taken from the Windows default, but given that the interval we set TCP keep alives (after they start) is 1000ms, I think it would make sense to decrease the initial window to something much smaller, perhaps a minute or two at most?

Given this is a breaking change (as some people may have been relying on the old default) perhaps we can consider this for SDK 3?

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Jeffry Morris April 19, 2019 at 12:40 AM
Edited

Thanks - it might make sense to do this in a dot minor release for SDK 2.0; otherwise we can just improve the documentation for cloud based deployments since we know its an outstanding issue. As for 3.0, we can most definitly lower the values for SDK 3.0.

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Created April 18, 2019 at 6:20 PM
Updated April 24, 2020 at 8:22 PM
Resolved September 11, 2019 at 4:25 AM
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