On 15 Sep 2006 00:32:49 -0700, Janto Dreijer <[EMAIL PROTECTED]> wrote: >This is probably more of a networking question than a Python one, but >it would be nice to know if someone has done this with Python's socket >module. And besides one usually gets more information from c.l.py than >anywhere else :) > >I have a server with a static "public" IP and a client behind a NAT. I >would like to send UDP packets from the server to the client. So what I >need to do is open up a "hole" in the NAT and let the server know the >target IP and port of the client where it can send its packets. > >Now I have read somewhere that you can have TCP and UDP running on the >same port. Not sure if this is true. Would it be a reasonable solution >to initiate a TCP connection from the client to the server and somehow >(?) let the server figure out how the client is connecting? And then >send UDP to client over the same (IP, port)?
You may be interested in Divmod Vertex (<http://divmod.org/trac/wiki/DivmodVertex>) for its NAT traversal techniques, if not for its actual code. The solution you describe above won't work on any widespread configuration I am aware of. In general, most individual solutions are only effective on a portion of existing configurations. A robust solution must employ multiple techniques. Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
