Another &derpnet example - tunneling TCP traffic over derp relay:

• similar to SSH tunneling, but just using DerpNet api
• server connects to some TCP port on localhost and forwards all traffic from it to derpnet_proxy remote
• client listens on local TCP port and forwards all traffic to derpnet_proxy remote
• example is limited to only single connection to server, but same idea can be extended to support multiple connections
  https://github.com/mmozeiko/derpnet#derpnet_proxy