UDP support in FreeRDP part 2
Let's take a closer look at the RDPUDP protocol which will transport data over UDP.
To begin with, remember that only channel data can be transported on top of UDP, so it doesn't affect older
graphics orders (so forget speed up of bitmpUpdates with UDP), however it will work with any egfx transported graphics. The migration from TCP to UDP is
done through the dynamic channel, so drdynvc is mandatory. This mechanism also allows
static channels to be migrated to UDP by setting the
TRANSPORTTYPE_UDP_PREFERRED flag in the gcc packet of multi-transport channel data.