FreeRTOS+UDP was removed from the FreeRTOS kernel download from
FreeRTOS V10.1.0. See the FreeRTOS+TCP stack, which can be
configured for UDP only use, as an alternative.
A Tiny Embedded UDP/IP Stack Implementation for FreeRTOS
FreeRTOS+UDP is a small, fully thread aware, sockets based, and very efficient UDP/IP (IPv4) stack for FreeRTOS.
It was created specifically for, and contains the features needed by, our
new Internet of Things solution (currently being documented). The standard
Berkeley sockets "like" interface makes it fast to learn and
easy to use in other applications, and its compact size and efficiency
makes it ideal for communication between small network enabled embedded