Casting Android Screen Across Network with Busybox nc 
(this is not encrypted)

# On Desktop
busybox nc -lp 8022|ffplay - 2>/dev/null

# On Android Device
screenrecord --output-format=h264 -|busybox nc <DESKTOP IP> 8022

# Or run as on liner on desktop
(busybox nc -lp 8022|ffplay - 2>/dev/null)&(adb shell screenrecord --output-format=h264 -|busybox nc <DESKTOP IP> 8022)