Howdy, You will want to study the API called "sockets". This is a standard C/C++ API that is used to TCP/UDP programming against the TCP/IP protocol. If you can google using the phrase "sockets tutorial", I think you will be rewarded by a whole host of articles. I am also a fan of books on a subjec...

Hello Angus, What I basically want to do is receiving UDP-packages from a remote computer and send them out as analog values through the DAC of the ESP32. I hope this make sense to you. Regards, Wamor Hello Angus,nkolban: How can I get thefeedback (callback function) of tcp's receive or send ？