Exceptions when connecting to server over wrong protocol

[thomashub]

To reproduce: start the ChatServer example that comes with hookup. Connect (with, for example, http://www.websocket.org/echo.html) to wss://host:port, i.e. using the secure websocket protocol.

The server throws the following exception, after which it does not accept any new connections:

SEVERE: Exception during connection.
java.lang.IllegalArgumentException: empty text
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:97)

When another client was already connected, it stays connected, but when it sends a message the server throws both the above error again, and also the following:

Mar 06, 2013 1:19:14 AM org.jboss.netty.channel.socket.nio.AbstractNioWorker
WARNING: Unexpected exception in the selector loop.
java.lang.IllegalArgumentException: unsupported message type: class org.jboss.netty.handler.codec.http.websocketx.TextWebSocketFrame
    at org.jboss.netty.channel.socket.nio.SocketSendBufferPool.acquire(SocketSendBufferPool.java:53)

It seems to me that the wss:// connection attempt should be rejected if it cannot be handled, causing no issues for the future state of the server.