Ross Finlayson wrote:
I have tried it (I am having problems with a multiple-interface
machine). It seems to get halfway there: We now compute the
Content-Base URL appropriately (and source= element in the RTSP
SETUP reply [though the o= line of the SDP still has a different IP
address. This may be appropriate, I don't have a clear idea of how
it is used, if at all.]. However, the RTP and RTCP packets come from
the "wrong" IP address, i.e. not necessarily the IP address of the
interface that the connection was made to.
It seems that some firewalls block all of the UDP traffic under
these circumstances. The UDP sockets need to be bound to the
appropriate interface, rather than INADDR_ANY, to ensure that they
come from the correct IP address.
You can do this by modifying your code to set
"ReceivingInterfaceAddr" at the start.
The problem is that I want to be able to accept RTSP connections from
*all* of the interfaces. So the UDP sockets need to be bound on a
per-connection basis, depending on what interface the RTSP came in on.
If I understand correctly, ReceivingInterfaceAddr is a static global, so
it would set the interface once and for all.
Marc Neuberger
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