feature: WebSocket echo

[pavelsavara]

I would like test web socket behavior

• upgrade from HTTP
• HTTP status codes
• HTTP headers
• keep-alive
• ping/pong
• delays
• aborts/disconnects
• half duplex, full duplex
• HTTP/2/QUIC interaction

[aaronpowell]

How many of these do you see applicable to the hosted instance vs running locally?

[pavelsavara]

The availability of the hosted instance for impromptu testing/prototyping is very nice indeed. As your prototyping gets more serious, you would be willing to download and run it yourself. Because maybe you need to fine-tune the server.

We do have similar infrastructure for testing dotnet runtime, but it's not as convenient as this project.

Let's see if somebody would upvote or comment here.