Yes, multicast sockets should be datagram.
But my question is, when do we close this socket? In case of a normal
UDP transport, we can simply send the message & close the socket, but in
case of multicast, we can't close the socket since we need to join the
multicast group & listen for any messages that are posted into the
group.

Vijay

-----Original Message-----
From: Salva Rey Calatayud [mailto:[EMAIL PROTECTED]] 
Sent: Wednesday, May 31, 2000 2:21 PM
To: [EMAIL PROTECTED]
Subject: RE: [Sip-implementors] Multicast socket query


Hi,

        I think that multicast sockets only work on UDP, does your 
multicast socket work on TCP ?

regads
Salva

On 31 May 2002, at 8:59, Vijay S Kamath wrote:

> 
> I'm reposting this query...
> 
> I've a doubt on the transport layer functionality of bis-09. According

> to bis-09, persistent connections can be closed after 64*T1 secs, 
> hence all TCP sockets will get closed automatically after some amount 
> of idle time. But if we create a multicast socket, we also need to 
> join the multicast group. When can we leave the group and close the 
> socket? Can the transport layer decide to close the socket after some 
> amount of idle time same as in case of TCP?
> 
> Thanks in advance.
> 
> Regards... Vijay
> 
> 
> 



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