The FreeRTOS+TCP source code and example projects are currently provided in their own .zip file download, but using the directory structure of the official FreeRTOS .zip file download. This allow the projects to be seamlessly moved from one download to the other, but can seem strange when the files are viewed in isolation. The FreeRTOS+TCP test suite Visual Studio project file is in the following directory: FreeRTOS-Plus\Test\FreeRTOS-Plus-TCP\Integration\Full-TCP-Suite This project is a version of the standard FreeRTOS demos that includes the integration tests of +TCP. It tests the +TCP stack through the use of FreeRTOS_Sockets API. To Run this project, make sure that the computer is connected to a network via ethernet cable. - Open the project (using file named `Full-TCP-Suite.sln`) and choose the required network interface by modifying this line `#define configNETWORK_INTERFACE_TO_USE` in FreeRTOSConfig.h. - Modify the `tcptestECHO_SERVER_ADDR[0-3]` and `tcptestECHO_PORT` in the file `test_tcp.h` according to the address of the unsecure echo server of your choosing. An implementation of echo server is provided here: https://docs.aws.amazon.com/freertos/latest/portingguide/afr-echo-server.html Once these changes are made, just build and run the project. It should run 23 test of which all should pass with a proper connection.