This is a replacement for the src/bs_unix.c file in NCD's version 2.3.1
Xremote daemon.  (See the NCDVERSION parameter in Xremote.mk.)

NOTE:  THIS MODULE IS GIVEN AS AN EXAMPLE ONLY.  BY COMPILING THIS
ROUTINE, YOU ASSUME ALL RESPONSIBILITY FOR ANY RESULTS.

XYLOGICS DISCLAIMS ALL WARRANTIES FOR THIS PRODUCT, INCLUDING IMPLIED
WARRANTIES FOR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AS
DEFINED BY THE UNITED STATES UNIFORM COMMERCIAL CODE.

Xylogics has made every attempt to ensure that this module will perform
as expected, but since it is distributed as an example program, and
since it relies on code in NCD's Xremote daemon, we cannot assure that
our testing gives complete coverage for these changes.

Xylogics is in the process of integrating this feature into NCD's
Xremote distribution.  We welcome comments, complaints and requests.

When Xremote is compiled using this module, it will be configured to use
transparent TCP connections for X display station I/O rather than
serial lines.  This allows you to set up connections for remote X
terminal users through your Annex without forcing the users to log in.

Once compiled, this program should be invoked in one of two forms:

	Xremote [:n -scanbase -scanmax] -line <annexname> -speed <port>

	This form will cause an active TCP connection to be made to the
	given Annex and port number.  The connection will be made using
	raw TCP protocol to TCP port 7000+<port> on the Annex whose
	IP address (or name) is <annexname>.  Note that the "-speed"
	parameter must be non-zero.  Also note that the last-client-
	reset function will cause this daemon to exit.

	Xremote [-scanbase -scanmax] -speed 0

	This form will cause the Xremote program to open a TCP listen
	socket on port 7000 and wait for connections from Annexes.
	Each new connection will be assigned a new display number
	according to the standard rules (if possible) and will then
	enter Xremote mode.  Note that the "-speed" parameter must be
	zero and must be the last parameter specified.

Either way, once the network connection is correctly established, then
the Xremote program will emit an informational message and fork off a
background task to handle the I/O.

When using the second form, you can set up a macro for your users to
enter Xremote mode directly from the CLI prompt by adding this to your
/usr/spool/erpcd/bfs/macros file:

	alias "Start Xremote session"
	keyin /xremote/
	{
	>Entering Xremote mode ...
	<telnet -st myhost 7000
	}

Where, of course, you should substitute the name of the host running
the Xremote daemon for "myhost."

To compile this utility (assuming your Xremote sources are in
/usr/local/src/xremote):

	cp bs_annex.c /usr/local/src/xremote/bs_annex.c
	cd /usr/local/src/xremote
	mv bs_unix.c bs_serial.c
	ln bs_annex.c bs_unix.c
	make