How to hook events when a client stream disconnects or network error?

[RustChater]

I want to do something when client stream disconnects or network error.
the definition of proto like this:

rpc MsgPush (MsgPushReq) returns (stream MsgsRes) {}

rust related code:

type MsgPushStream = tokio_stream::wrappers::ReceiverStream<Result<MsgsRes, Status>>;

[LucioFranco]

So I think when you try to write a message on the write end and it fails with a closed that means the receiver went away and the client has disconnected. So you can use that to detect that.