Re: [Lksctp-developers] msg->msg_namelen returns 0?

[Sridhar S. <sr...@us...>]

On Wed, 2005-07-27 at 15:28 -0400, Thomas Suchecki wrote:
> Hello,
> 
> I'm trying to retrieve the originator of a
> SCTP_ASSOC_CHANGE(COMMUNICATION_UP) event by looking into the msg_name
> socket address structure located in the msghdr structure, in the
> incoming message. I can look at the msg_iov.base and retrieve the
> notification type no problem so I think the overall message is ok, but
> whenever I try to get the msg_name and then the IP I get 0.0.0.0. So I
> decided first to check msg_namelen and its value is 0 also. Am I missing
> something here?
> 
> Here is a sample of my code:
> 
> Type of the msg (which is the message that I get from recvmsg())
> struct msghdr *msg
> 
> printf("%d", msg->msg_namelen);
> 
> Should this not return the length of the msg_name, in my case I always
> get 0.

Are you setting msg_namelen to the size of msg_name buffer before
calling recvmsg()?

-Sridhar