Sorry for the long delay in responding to this. (I've been traveling
for the past two months, and am way behind on email.)
Unable to determine our source address: This computer has an invalid
IP address: 0x0
Our code (specifically, the function "ourIPAddress()" in
"groupsock/GroupsockHelper.cpp") uses two mechanisms (in succession)
to try to find the computer's IP address:
1/ It sends a multicast packet, then receives it and looks at the IP
source address.
2/ If step 1/ fails, the code then calls "gethostname()", extracts
the resulting domain name, and then calls "gethostbyname()" on this
domain name.
Step 1/ is by far the most reliable mechanism of the two (because
many systems either don't have a domain name, or else "gethostname()"
and/or "gethostbyname()" aren't supported). However, for Step 1/ to
work, you *must* have IP multicast working on your system. In
particular, you need to have a route installed on your system for
224/8. Nonetheless, this is the first thing that people should try
to do if they encounter this problem.
Now, I'm (pleasantly) surprised to learn that you have the "LIVE555
Streaming Media" code working on an iPhone, because our documentation
does not include instructions for compiling for the iPhone. (If
anyone would like to contribute some instructions/tips for doing
this, I'd be happy to add them to our online documentation.)
However, because you're getting this error, it means that both 1/ the
iPhone's OS doesn't have an IP multicast route installed for 224/8,
*and* 2/ the combination of "gethostname()" and "gethostbyname()"
isn't working. If you can't fix either 1/ or 2/, then you'll have to
come up with some other mechanism for getting your IP address. (If
you can do this, let us know, and we'll consider adding it (as a
third mechanism to try) to our "ourIPAddress()" code.)
--
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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