NRF52840 TCP client and server implementation


I would like to set up a wireless communication channel between two NRF52840 DK boards. I checked the Nordic SDK v16.0 and found some examples such as \examples\iot\tcp and \examples\iot\udp. Both of these examples require thrd party device (Linux router device) to initialize the 6LoWPAN module. My question is, can I get some sample applications or sample ocdes that build the tcp/udp connection without the Linux router device? For example, one nRF board acts as server and can response for the connection request. Another board acts as client and can initialize the connection request. Thanks for your attention!