Add examples for web socket servers & clients

.lune/examples/websocket_client.luau

@@ -0,0 +1,35 @@
+--> A basic web socket client communicates with an echo server
+
+local URL = "wss://demo.piesocket.com/v3/"
+
+-- Connect to our web socket server
+
+local socket = net.socket(URL)
+
+print("Connected to echo web socket server at '" .. URL .. "'")
+print("Sending a message every second for 5 seconds...")
+
+-- Force exit after 10 seconds in case the server is not responding well
+
+task.delay(10, function()
+	warn("Example did not complete in time, exiting...")
+	process.exit(1)
+end)
+
+-- Send one message per second and time it
+
+for i = 1, 5 do
+	local start = os.clock()
+	socket.send(tostring(1))
+	local response = socket.next()
+	local elapsed = os.clock() - start
+	print(`Got response '{response}' in {elapsed * 1_000} milliseconds`)
+	task.wait(1 - elapsed)
+end
+
+-- Everything went well, and we are done with the socket, so we can close it
+
+print("Closing web socket...")
+socket.close()
+
+print("Done! 🌙")

.lune/examples/websocket_server.luau

@@ -0,0 +1,31 @@
+--> A basic web socket server that echoes given messages
+
+local PORT = if process.env.PORT ~= nil and #process.env.PORT > 0
+	then assert(tonumber(process.env.PORT), "Failed to parse port from env")
+	else 8080
+
+-- Run the server on port 8080
+
+local handle = net.serve(PORT, {
+	handleWebSocket = function(socket)
+		print("Got new web socket connection!")
+		repeat
+			local message = socket.next()
+			if message ~= nil then
+				socket.send("Echo\n" .. message)
+			end
+		until message == nil
+		print("Web socket disconnected.")
+	end,
+})
+
+print(`Listening on port {PORT} 🚀`)
+
+-- Exit our example after a small delay, if you copy this
+-- example just remove this part to keep the server running
+
+task.delay(2, function()
+	print("Shutting down...")
+	task.wait(1)
+	handle.stop()
+end)