Sample pipelines:
- replacing tcpserversink protocol=gdp with gdppay ! tcpserversink:
  - raw audio:
    - server:
      gst-launch -v audiotestsrc ! gdppay version=0.2 ! tcpserversink
    - client:
      gst-launch -v tcpclientsrc protocol=gdp ! alsasink sync=FALSE

  - vorbis packets:
    - server:
      gst-launch -v audiotestsrc ! audioconvert ! vorbisenc ! gdppay version=0.2 ! tcpserversink
    - client:
      gst-launch -v tcpclientsrc protocol=gdp ! vorbisdec ! audioconvert ! alsasink sync=FALSE

  - ogg packets:
    - server:
      gst-launch -v audiotestsrc ! audioconvert ! vorbisenc ! oggmux ! gdppay version=0.2 ! tcpserversink
    - client:
      gst-launch -v tcpclientsrc protocol=gdp ! oggdemux ! vorbisdec ! audioconvert ! alsasink sync=FALSE

  In all the client pipelines, tcpclientsrc protocol=gdp can be replaced with
  tcpclientsrc ! gdpdepay
