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From: geof@aurora.com (Geoffrey H. Cooper)
Newsgroups: comp.laser-printers
Subject: Re: Help with Interleaf TP$ using QMS/Imagen laser printers
Keywords: Interleaf, Imagen, Unbundle, non-functional software
Message-ID: <9009052056.AA12885@crayola.cs.UMD.EDU>
Date: 23 Aug 90 16:15:17 GMT
References: <9008222046.AA08142@crayola.cs.UMD.EDU>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Aurora Group, Palo Alto, CA
Lines: 33
Approved: laser-lovers@brillig.umd.edu

In article <9008222046.AA08142@crayola.cs.UMD.EDU> ras@sgfa.ssd.ray.com (Ralph A. Shaw) writes:
>"eicat" program (to talk to the Imagens via Ethernet TCP/IP) does not

The easiest thing to do is replace eicat with a home-brew.  It is
actually very simple.  First experiment until you know how eicat is
being called (replace it with a #!/bin/sh shell script that echos
arguments to the console, for example).

The IMAGEN protocol is in the TCP/IP supplement to the printer
documentation.  The easiest thing to do is:

	for (;;) {
		open connection to port 35 on printer
		if succeeds then
			send all data down the connection
			if succeeds then break;
		sleep for 1 minute
	}

You can do better this with somewhat lower overhead by implementing
the UDP-based status protocol.  In that case, probe the printer with
status packets until it indicates that it is running and accepting TCP
connections, then attempt one tcp connect.  But the above will
certainly work well.

If you implement a "netpipe" like procedure that opens a socket to
port 35 or fails you can do the whole thing from a shell script.

When you are done, post your code to comp.sources.unix....

- Geof
-- 
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