LNet beginner with basic problems lazarus / 38-Networking and Web Programming ---------------------------------------------------------------------- Raul_ES · 2019-05-18 01:17 Hi all, I am checking the LNet library and its examples. I decided to run an example that looked "simple" provided in the package called TCP/UDP Test Case, but I'm unable to make it run. The sample code compiles without a problem, but when I execute the program I get the following message (see attached picture please). Any idea of what I am missing? regards ---------------------------------------------------------------------- Raul_ES · 2019-05-18 01:18 Here is the source code. ---------------------------------------------------------------------- JimD · 2019-05-19 02:29 Hi Raul, For assistance with your code, please post in the following forum: https://www.pilotlogic.com/sitejoom/index.php/forum ---------------------------------------------------------------------- Thaddy · 2019-05-19 09:41 The much easier answer is to check if you are using the right protocols: No SSL(at all)  but at a minimum TLS 1.1 or higher....