use ws_client in shard, too, and make it better at handling core disconnecting

backend/test_utils/src/server/channels.rs

@@ -1,7 +1,7 @@
 use std::{ops::{Deref, DerefMut}, time::Duration};
 
 use crate::feed_message_de::FeedMessage;
-use crate::ws_client;
+use common::ws_client;
 use futures::{Sink, SinkExt, Stream, StreamExt};
 
 /// Wrap a `ws_client::Sender` with convenient utility methods for shard connections

backend/test_utils/src/server/server.rs

@@ -1,5 +1,5 @@
 use super::{channels, utils};
-use crate::ws_client;
+use common::ws_client;
 use common::{id_type, DenseMap};
 use std::ffi::OsString;
 use std::marker::PhantomData;

backend/test_utils/src/server/utils.rs

@@ -1,4 +1,4 @@
-use crate::ws_client;
+use common::ws_client;
 use anyhow::{anyhow, Context};
 use tokio::io::BufReader;
 use tokio::io::{AsyncBufReadExt, AsyncRead, AsyncWrite};