Solstice X.25 and multiple links.

Question

Hello.
I have a server, which is meant to respond on a call from Solstice X.25. This is done as follows. A �CONN_DB struct�, i.e. host, is declared. The only thing that is done to host is this: �host.hostlen = ANY_LINK | ANY_SUBADDRESS;�. A socket descriptor is got from a call to �socket(AF_X25, SOCK_STREAM, 0);�. Then the calls to �bind� and �listen� are done. At this point �select� is called and the program waits for Solstice to call on it. When this happens, a call to �accept� is done.
This solution works if the program handles calls from all links. Now to the problem, I want to run two servers like this and let one handle calls from links 0 and 2 and the other server handle calls from link 1 and 3. I know there is the �ioctl( fnum, X25_SET_LINK, &linkid )� call. But if I use this, and exclude ANY_LINK in host.hostlen, only one link can be chosen.
I would be grateful for any ideas.
/�ke
A section of the relevant code is shown below.
if( con_type == CALLED ) // daemon (receiving)
if(( fnum = socket( AF_X25, SOCK_STREAM, 0 )) == -1)
build_errno_string(ERR_SOCKET);
return (-1);
pgrp = getpid();
if( ioctl( fnum, SIOCSPGRP, &pgrp ))
build_errno_string(ERR_IOCTL_SIOCSPGRP);
return (-1);
if (ioctl( fnum, X25_HEADER, &need_header ))
build_errno_string(ERR_IOCTL_X25_HEADER);
return (-1);
host.hostlen = ANY_LINK | ANY_SUBADDRESS;
if( bind( fnum, (struct sockaddr *)&host, sizeof(host) ))
build_errno_string(ERR_BIND);
return (-1);
xdebug_log("x25_link.C: initiate_x25, bind is done\n\n");
if( listen( fnum, 5 ))
build_errno_string(ERR_LISTEN);
return (-1);
xdebug_log("x25_link.C: initiate_x25, past listen\n\n");
}

Answer 1

Hello;
I use for the first time the stack Solstice X.25 and I have need for assistance. I have a Sun (Solaris) serveur with a HSI Card and Solstice X25. This serveur must to send of the data via X25 network another server (linux).
Q1 : how How I must use Solstice for sending the data ?
Q2 : I must realise in the same thread (in C++) the implemantation of the levels 4 et 5 (transport and session). Its possible a API Solstice interface with C++ object (Call C++ fonction) ?
Q3 : I use the buffer notion for storing the X25 msgs, have you another better solution ?
Thank you
Djamel