NAT1 Full cone question

[rocinan]

Describe actual behavior

I am working on changing the socks5 of this project to full cone（nat1）. I would like to ask, can I only receive data packets from remote addr in the udp connection state? If a connect udp is established, such as 127.0.0.1:8003- >1.1.1.1:53, but I want to receive 1.1.1.2:33->127.0.0.1:8003 udp packets, can I only use the non-connected listening port to achieve this?

What is your expected behavior

nat1

Specifications like the version of the project, operating system, or hardware

Steps to reproduce the problem

[txthinking]

You can use the Small API(Struct is like concept in protocol) instead of the Advanced API to do any you want