streaming call is not canceled when channel is dropped

[BusyJay]

We observe that in some case streaming call won't be canceled automatically when underlying channel is dropped. It can be reproduced reliably with TiKV, though a simple ping pong example can't reproduced it yet.

[siddontang]

a simple ping pong example can't reproduced it yet

Does it use a Unary API? Maybe we should use a BiDirectional API?

[BusyJay]

No, it's a duplex streaming call.