in src/main/scala/com/twitter/iago/server/ParrotUdpTransport.scala [74:81]
def getPipeline(): ChannelPipeline = {
(requestEncoder, responseDecoder) match {
case (Some(enc), Some(dec)) => Channels.pipeline(enc, dec, clientHandler)
case (Some(enc), None) => Channels.pipeline(enc, clientHandler)
case (None, Some(dec)) => Channels.pipeline(dec, clientHandler)
case (None, None) => Channels.pipeline(clientHandler)
}
}