/**
* {@inheritDoc}
*
* <p>Handles messages received from other clients on this channel, as well as server
* notifications about other clients joining and leaving this channel.
*/
public void receivedMessage(ClientChannel channel, SessionId sender, byte[] message) {
ByteBuffer buf = ByteBuffer.wrap(message);
byte opcode = buf.get();
switch (opcode) {
case OP_JOINED:
memberList.addClient(ChatClient.getSessionId(buf));
break;
case OP_LEFT:
memberList.removeClient(ChatClient.getSessionId(buf));
break;
case OP_MESSAGE:
{
byte[] contents = new byte[buf.remaining()];
buf.get(contents);
// The server sends us a separate, private echoback in this
// application; those were from us originally, so use our
// own SessionId (instead of null).
outputArea.append(
String.format(
"%s: %s\n",
(sender != null) ? sender : myChatClient.getSessionId(), new String(contents)));
break;
}
default:
System.err.format("Unknown opcode 0x%02X\n", opcode);
}
}
