public void handleEvent(final ConnectedMessageChannel channel) {
final Pooled<ByteBuffer> pooledReceiveBuffer = connection.allocate();
try {
final ByteBuffer receiveBuffer = pooledReceiveBuffer.getResource();
int res = 0;
try {
res = channel.receive(receiveBuffer);
} catch (IOException e) {
connection.handleException(e);
return;
}
if (res == -1) {
connection.handleException(client.abruptClose(connection));
return;
}
if (res == 0) {
return;
}
client.tracef("Received %s", receiveBuffer);
receiveBuffer.flip();
String serverName = channel.getPeerAddress(InetSocketAddress.class).getHostName();
final byte msgType = receiveBuffer.get();
switch (msgType) {
case Protocol.CONNECTION_ALIVE:
{
client.trace("Client received connection alive");
return;
}
case Protocol.CONNECTION_CLOSE:
{
client.trace("Client received connection close request");
connection.handleIncomingCloseRequest();
return;
}
case Protocol.GREETING:
{
client.trace("Client received greeting");
while (receiveBuffer.hasRemaining()) {
final byte type = receiveBuffer.get();
final int len = receiveBuffer.get() & 0xff;
final ByteBuffer data = Buffers.slice(receiveBuffer, len);
switch (type) {
case Protocol.GRT_SERVER_NAME:
{
serverName = Buffers.getModifiedUtf8(data);
client.tracef("Client received server name: %s", serverName);
break;
}
default:
{
client.tracef(
"Client received unknown greeting message %02x",
Integer.valueOf(type & 0xff));
// unknown, skip it for forward compatibility.
break;
}
}
}
sendCapRequest(serverName);
return;
}
default:
{
client.unknownProtocolId(msgType);
connection.handleException(client.invalidMessage(connection));
return;
}
}
} catch (BufferUnderflowException e) {
connection.handleException(client.invalidMessage(connection));
return;
} catch (BufferOverflowException e) {
connection.handleException(client.invalidMessage(connection));
return;
} finally {
pooledReceiveBuffer.free();
}
}
