assertEquals(EventSource.kBackend, de.source);
assertEquals(connId, de.whichClient);
assertEquals(buf.copy(255, 245), de.data);
// step 4
client.disconnect();
de = (DataEvent) queue.take();
assertEquals(EventSource.kBackend, de.source);
m = god.commandChannel.matcher(de.getString());
if (!m.matches())
fail("command channel message doesn't match.");