[ECOS] Problem with TCP Urgent data (old stack).

[Grant Edwards <grante at visi dot com>]

I'm using the old TCP/IP stack to talk to linux telnetd.  

When my eCos app sends a Ctrl-C to telnetd, it kills the
running shell command and inserts a telnet data-mark (0xff
0xf2) as urgent data in the stream.

The eCos TCP/IP stack only removes the first byte of the
sequence so that my app sees the 0xf2 but not the 0xff.

There's a comment in the old TCP/IP code that says:

  * According to RFC961 (Assigned Protocols),
  * the urgent pointer points to the last octet
  * of urgent data.  We continue, however,
  * to consider it to indicate the first octet
  * of data past the urgent section as the original 
  * spec states (in one of two places).

Have I run into the a case where the Linux stack is following
RFC961 and eCos isn't, so the last byte of urgent data is
appearing in the data stream?

I don't care whether the two bytes of urgent data are present
in the data stream or not, but I can't deal with half one way
and half the other...

-- 
Grant Edwards
grante at visi dot com

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