XIO errors

[David Tang_1]

I have encountered an XIO error when connecting to a HP-UX server using ReflectionX. After sometime even without any activities, I would receive the following error:-
XIO: fatal IO error 57 (Link severed) on X server "wsgjt028:0.0"
after 700 requests (699 known processed) with 0 events remaining.
I will be thrown out from the application but still connected to the server.

Please advise. Thanks.

[Alex Glennie]

One of the more likely causes could be network connectivity, however without more details it's difficult to say :

1.Whats the application & what does it do ? or are you just using Reflection to log into CDE or similar ?
2.Is the PC on the same subnet as the HP server ? Are routers or swithces involved ?
3.What's in $HOME/.dt/errorlogs, var/dt/Xerrors and your syslog ?
4. Has this always occurred or just started .. if so any changes on any of the kit or netwk involved ?
5. Maybe worth running landiag to check on netwk ?
6.Also worth checking the Display variable is se tcorrectly and hostname resolution between PC and HP server is working both ways :ip & hostname.

Also check reflectionX's log .... I suspect there may even be a trace facility you can turn on if the problem is reproduceable ?

[Stefan Farrelly · Accepted solution]

Error 57 is an undocumented error which means there is an error in the TCP code in the kernel. You need to install/update your patches on your HP server to fix, I think its the latest ARPA patch you will need, but you should also add the latest X11 patches.

[David Tang_1]

Thanks for your help Stefan. I have installed the latest ARPA patch and it seems to be working ok now.