fix: various buffering / av sync issues

crates/core/src/ingress/tcp.rs

@@ -15,9 +15,10 @@ pub async fn listen(out_dir: String, addr: String, overseer: Arc<dyn Overseer>)
             ip_addr: ip.to_string(),
             endpoint: addr.clone(),
             app_name: "".to_string(),
-            key: "no-key-tcp".to_string(),
+            key: "test".to_string(),
         };
         let socket = socket.into_std()?;
+        socket.set_nonblocking(false)?;
         spawn_pipeline(
             Handle::current(),
             info,