How to receive an upd video stream?

As the title says, I want to push udp video stream to a fixed port of mediasoup through gstreamer, what do I need to do? Should I use PlainTransport?
Thank you!

Sorry, there is ton of doc, examples and topics about that. Will not repeat them here.

Sorry, I did n’t check the documentation for setting a fixed port. PlainTransport’s localPort is dynamic. I just want to use a fixed port. Can you remind me?

The local port is dynamic, sorry.

Currently I fulfill this requirement through an agent.