Dan Wing and I have been discussing his comments and I think we now have
text for most of the transport-related points. In discussing the use of
ports, the following revised text was suggested.
OLD:
3.8. Usage of the UDP port by DCCP-UDP
A DCCP-UDP server (that is, an initially passive endpoint that wishes
to receive DCCP-Request packets [RFC4340] over DCCP-UDP) listens for
connections on one or more UDP ports. UDP port number XXX IANA PORT
XXX has been reserved as the default listening UDP port for DCCP-UDP
connections. Some NAT/NAPT topologies may require using a non-
default listening port.
A DCCP-UDP client provides UDP source and destination ports as well as
DCCP source and destination ports at connection initiation time....
---
NEW:
A DCCP-UDP server (that is, an initially passive endpoint that wishes to
receive DCCP-Request packets [RFC4340] over DCCP-UDP) listens for
connections on one or more UDP ports. UDP port number XXX IANA PORT XXX
has been reserved as the default listening UDP port for a DCCP-UDP
server. Some NAT/NAPT topologies may require using a non-default
listening port.
The purpose of this IANA-assigned port is for the operating system or a
framework to receive and process DCCP-UDP datagrams for delivery to the
DCCP module. Because of this, the IANA-assigned port SHOULD NOT be used
as a Destination UDP Port by a DCCP-UDP server listening for incoming
DCCP-UDP packets, and SHOULD NOT be used by as a Source UDP Port by a
client application sending DCCP-UDP packets.
A DCCP-UDP client provides UDP source and destination ports as well as
DCCP source and destination ports at connection initiation time....
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I'll submit an updated revision after feedback on the other RTP/SDP points.
Gorry
