I looked around for how to connect 2 client over NAT and all brought me to STUN. I found a lot of API like jstun and ice4j but there is no documentation and examples. Can someone help me? Thank you all and sorry for my english.
EDIT I found IcedJava that seems to be really good, it use the new RFC 5389 for STUN, ICE and TURN, but there is a really bad documentation for it. This one https://java.net/projects/siptools/pages/IcedJava Someone knows a better documentation for it?