where to find more about http2_keep_alive_while_idle

[AlexXi19]

I'm suspecting a connection issues with an upstream crate that uses tonic and traced the keep alive variable to the http2_keep_alive_while_idle field. However as I was looking through the source code, I wasn't able to find more information like how this is used. // Set http2 KEEP_ALIVE_INTERVAL. Uses hyper's default otherwise I also wasn't able to find any information based on this comment that was in the code.

[sezan92]

I also have not found any info . should we tag someone ?

[luca992]

The defaults are here in the docs
https://docs.rs/hyper/latest/hyper/client/conn/http2/struct.Builder.html