Calling from tokio context

[capacman]

Hi,
Sorry for if the question is too newbie but is it ok to call functions from a tokio context? like below (tx is streamingcallsink and rx is Clientcstreamreceiver)

tx.feed((data.clone(), WriteFlags::default())).await
rx.await?

Thanks in advance...

[BusyJay]

Yes, it's OK to do so.

[capacman]

Thank you. When i read other issues ,it confuse me a little bit. So what is the problem described in #338

[BusyJay]

It's unsafe to mix using different runtime. The problem is that tokio expects using its own executor for their futures. You should not spawn futures calling tokio functions into grpcio by client.spawn or ctx.spawn.

[BusyJay]

It's best to bridge them by using some channels and spawn the futures generated by grpcio into grpcio reactor for best performance.