Hi Tom,
I'm glad that you got the Draytek working.
A couple of comments:
i am not a developer but IMHO if this help (what it did) the gnugk can get
the answer from the first request at port 1719 (the registrations request)
I think not. It's a good bet that the Draytek did substitute its public
IP in the RRQ packet call signal address. You can run Ethereal on the
GK machine to verify this. If so, then gnugk wouldn't discover that the
endpoint was NATed until the first call in or out. Then, it might be
difficult for the code to deal with the change.
isn´t it possible to trace the full packet anyway to see if
it´s really a public IP Endpoint or Proxy (the private ip address range is
well known) ?
The "well known" range would be a good start, but it would need to be settable
from config file. There are some reasons to use registered IPs behind NATs,
e.g. 9.0.0.0/8 is registered to IBM but intentionally not routable on the
Internet. It is also common to use private IPs without NAT. E.g. an ISP
assigns customers addresses in 10.0.0.0/8 for voice and video (in addition
to a public IP for Internet access). It has its media servers in
172.16.0.0/12, with non-NAT routing between networks 10 and 172.
STUN could potentially help, but that solution would be of no use to
the majority of users with hardware endpoints that are almost always
closed-source.
agree with you maybe this is not for the endpoints but it could solve many
problems with a child/proxy GK to give more fault tolerance for broken NATs
and or broken Endpoints.
If you have a static IP, then you should be able to set NetworkInterfaces
on the child and accomplish most of what you could do with STUN. Have you
tried this? [in 2.0.9; it seems to be broken in 2.2]
Regards,
Stewart
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