[Live-devel] what's mean of this sentence?

[Nikola Kolarovic]

Hi Ross,

I have found out that Live555 uses TTL 0 multicast message in order to find
its own IP address.

Solution like that might sound dubious, but there must be a reasonable
explanation for such an implementation.
Network configurations? Portability? Although it seems that it creates more
problems (on some network configurations, including mine).

I just switched to usual IP query, and the RTSP startup procedure works
well now, and faster than the previous solution.

Can you elaborate on this method (TTL 0 multicast msg)?


Thank you very much,
Nikola

>>
>> I use mplayer which has compile the source of live as the
>>client,and I use the helix as the serve ,but I receive the message :
>>
>> STREAM_LIVE555, URL: rtsp://202.194.20.86/mpg4video.mp4
>> Stream not seekable!
>> Unable to determine our source address: This computer has an invalid
>> IP address: 0x0
>> Unable to determine our source address: This computer has an invalid
>> IP address: 0x0
>>Unable to determine our source address: This computer has an invalid
>> IP address: 0x0
>> Initiated "video/MP4V-ES" RTP subsession on port 32822
>> Unable to determine our source address: This computer has an invalid
>> IP address: 0x0
>> Unable to determine our source address: This computer has an invalid
>> IP address: 0x0
>> Initiated "audio/MPEG4-GENERIC" RTP subsession on port 32824
>> what's wrong with it ?
>
> The code is having trouble figuring out your IP address, perhaps (in
> part) because you don't have multicast configured properly on your
> system.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.live555.com/pipermail/live-devel/attachments/20120214/1d8cb985/attachment.html>