Shared UDS channel via static gRPC client

[hairongchen]

Feature Request

I want the UDS channel can be reused for multiple gRPC request via bellow code:

static MY_CLIENT: OnceCell<MyClient<Channel>> = OnceCell::const_new();
async fn get_client(my_uds_path: String) -> MyClient<Channel> {
    let uds_path = my_uds_path.parse::<Uri>().unwrap();
    MY_CLIENT.get_or_init(|| async {
        let channel = Endpoint::try_from("http://[::]:0")
        .unwrap()
        .keep_alive_while_idle(true)
        .connect_with_connector(service_fn(move |_: Uri| {
            UnixStream::connect(uds_path.to_string())
        }))
        .await
        .unwrap();

        MyClient::new(channel.clone())
    })
    .await.clone()
}

Crates

Motivation

I have multiple kind of gRPC requests to be sent, but when I call above static client defined in gRPC and intialized via channel,
it failed by:
called Result::unwrap() on an Err value: Status { code: Unknown, message: "Service was not ready: transport error", source: None }

Proposal

Alternatives