Is it possible to have two Coroutines print to the console at the same time (in a queue), while one is reading keyboard input from the console?

sure, what makes you think it wouldn't be? the system streams are already thread-safe

Basic Websocket client that sends messages to the server and receives responses back in the console.

A

select

might work for this.

also, you do mean to make two requests here, right? not one combined websocket?

In the example there are two WebSocket sessions.

I can't see anything immediately obvious that would make this not work. assuming your

/ws/echo

endpoint doesn't echo it to all sessions though, you won't see anything. if it does, I'd have to setup the code to see what's not working

The server will echo to all sessions pointing to the same path.