From:	MERC::"uunet!VM1.NoDak.EDU!ANU-NEWS" 24-JUN-1992 02:42:56.10
To:	Multiple recipients of list ANU-NEWS <ANU-NEWS@VM1.NoDak.EDU>
CC:	
Subj:	Re: NNTP_XMIT using UCX?

---
In article <1992Jun23.172928.4322@ecl.psu.edu>, fenner@jazz.psu.edu (Bill Fenner
) writes:
> I have been using CMU TCP for my NNTP transferss.  The CMU IPACP is now
> taking up about 20% of the CPU, so we're thinking that switching to UCX will
> lower overhead.  However, I can't get an NNTP_XMIT that I compiled with UCX
> defined to work.  I recompiled with the UCXQ parameter to NEWSBUILD.
>
> If file foo.bar has one message-ID in it, and I do this:
>
> ECLD> mcr []nntp_xmit ecl.psu.edu ucx foo.bar deb.1 deb.2
>         Connecting to NEWS SERVER on node ecl.psu.edu ...
> ECLD> type deb.1
> 23 Jun 92 17:26:02 ecl.psu.edu: nntpxmit: ecl.psu.edu, Error: Connection lost,
 t
> ransfer aborted.
>
> ECLD> type deb.2
> X> Try open channel to remote node
> Net: Could not open network channel
> Cannot connect to node, retry: <1992Jun23.175112.12352@rice.edu>
>

Are you also running NNTP_TCPUCXM.  If so then the problem is almost certainly
the bug in nntp_xfer and nntp_xmit in module open_net.  Look for the following:


#if UCX
  else if (proto == UCXTCP) {
    if (sys$assign(c$dsc("BG:"),&net_chan,0,0) & 1) {
      sck_parm[0] = INET$C_TCP;
      sck_parm[1] = INET_PROTYP$C_STREAM;
      local_host.inet_family = INET$C_AF_INET;
      local_host.inet_port = 0;  /* dynamic port assignment */
      ^^^^^^^^^^^^^^^^^^^^   ^

The above is the correct code.  As released it was

local_host.inet_port = htons(NNTP_PORT);

which is incorrect, since port 119 is reserved for the server, hence the
conflict.  This is fixed in >= 6.1a2.

If this is not the problem, it is far easier to debug using telnet.

$telnet ecl.psu.edu 119

then enter nntp commands.  Note if you can do this, then you probably _do_ have
the above bug in nntp_xmit :-)


Cheers.

----
David E. Bellamy              Email: bellamy@commerce.uq.oz.au
Dept. Commerce, University of Queensland, St. Lucia, AUSTRALIA