> 05/03/01 09:04:31     ANR9999D tcpcomm.c(1567): SessionThread: return code
> from
>                        setsockopt is 22

Malcolm - Your nagging problem is probably related to TCP buffer sizing
          in Solaris...
Have a look at http://www.sean.de/Solaris/tune.html (search for EINVAL,
which is the errno name for the 22 number).  Clicking on the
SUN TCP/IP Admin Guide link there takes you to the gospel, at
http://docs.sun.com/ab2/coll.47.4/NETCOM/@Ab2PageView/1787?DwebQuery=ndd#FirstHit
where it says Attempts to use larger buffers fail with EINVAL.

You might try changing your client and server TCPWindowsize options to
see what might improve things; or perhaps it may be a Solaris adjustment.
Confer with your Solaris people on this.

  Richard Sims, BU