Multiple telnet sessions

[Joel Sherrill]

Brett Swimley wrote:
> Hi,
>
> I'm working on a telnet like server for a Python interpreter (which I'm 
> hoping to post on the wiki) and am running into some problems.
>
> I thought I would go back to the basics and work with the telnetd server 
> provided.
>
> I have initialized as follows:
>
> #ifdef ENABLE_TELNET
>   /******************************************
>    * Just in case we may want to telnet to the application.
>   ****************************************/
>   rtems_pty_maximum_ptys = 10;
>   rtems_io_register_driver( 0, &pty_driver_address_table, &pty_major );
>   rtems_telnetd_main(0, NULL);
> #endif
>
>  
> Things work OK until I get multiple telnet sessions running.  Then, 
> typing text into the first session causes an exception in 
> _Thread_Dispatch() in _CPU_Context_restore_fp() (which may be an 
> artifact of another issue).
>
>   
Sounds like the stack checker kicking in and trying to using printf
when it is questionable to do so. If you are on a recent enough
RTEMS, stack checker uses printk.

If you have printk support in your BSP, I would recommend
changing the printf's in check.s to printk and trying again.


> Has anyone run multiple telnet sessions concurrently?  Am I setting up 
> the pty driver correctly?
>
> Thanks in advance,
>
> Brett Swimley
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