Hi,
On May 24, 2011, at 12:40 PM, Pasi Sarolahti wrote:
Hi Rémi,
On May 18, 2011, at 8:22 AM, Rémi Denis-Courmont wrote:
On Tue, 17 May 2011 21:56:52 +0100, Colin Perkins <csp@xxxxxxxxxxxxx>
wrote:
What's the concern here? Use the IANA registered port, unless
specified
otherwise by the application. Any UDP tunnelling solutions must
specify
a
UDP port.
The concern is that we have two (pairs of) ports. This does not
only not
fit in the standard SDP m=line, but it does not fit in the
traditional
sockaddr_in/sockaddr_in6 abstraction (and its equivalent in many
programming languages/frameworks).
I can't see why the two pairs of ports should be in the same
sockaddr_in structure. I'd assume a typical setup to be that DCCP
applications continue work as normally using DCCP sockets, and UDP
encapsulation is controlled in some other way (e.g., socket options
as Colin suggested).
I agree 100% with this. Let the app use e.g. a socket option of DCCP,
or don't even expose it and try to automatically use it as a fallback
without even telling the application.
Cheers,
Michael
