hole punching alternative

[luislorenzom]

I have read in your webpage that the latest release of TomP2P does not support hole punching. I would like to know if TomP2P has any alternative to send direct messages between to peers in different networks, that is, between NAT-ed LAN networks, either implemented in the library or planned to be in the future. If it exists, is there any example available?

[sytolk]

You can check this example
TomP2P/examples/src/main/java/net/tomp2p/examples/ExampleHoleP.java

[luislorenzom]

I tested it a few weeks ago, but throws me a NullPointerException at line 43, when it sends a message from "unreachable1" to "unreachable2". I don't know if is a library problem or my dev environment. However, thanks for your help!

[kg6zvp]

Any progress on this?

[luislorenzom]

Still no answer from main developers :-/

[tbocek]

Sorry for the delay, we are working on https://github.com/jonaswagner/sctp4j, which will make hole punching much easier. The idea is to have SCTP tunneling over UDP. That means if we have a UDP connection we can "upgrade" to SCTP. That also means we will ditch TCP and use UDP and SCTP only.