Is it possible to connect 2 pc without portfording?

Question

i want to use socket to send data in both ways

Answer 1

Sockets don't require port forwarding at all to work. Sockets are also bidirectional by default so your fine there. If you want to have two computers that are both behind different routers connect to each other, however, at least one of them will need to be either port forwarded or use a tunnel.