Date: Sat, 3 Feb 1996 10:34:44 +0800 (GMT+0800)
From: "Orlando A. Andico" <orly AT natalie DOT eee DOT upd DOT edu DOT ph>
To: Michael Leodolter <Michael DOT Leodolter AT lab1 DOT psy DOT univie DOT ac DOT at>
cc: DJGPP Mailing List <djgpp AT delorie DOT com>
Message-ID: <Pine.LNX.3.91.960203102401.82A-100000@natalie.eee.upd.edu.ph>
MIME-Version: 1.0

>Look in 
>
>ftp://lab1/psy.univie.ac.at/pub/tcplib-dj200/tcplib-dj200.1.diffsrc.gz
>
>for diffs.
>
>The file tcplib-dj200.1.diffsrc.gz contains diffs against
>the original pub/djgpp/contrib/tcplib.zip 
>	(From Martin Granell I think).
>
>Fixed: sockets,bind,select,...
>
>Not changed: "blockink socket calls" (for Orlando A. Andico)
>
>Added: autobind,... , DJ200-compile
>
>Authors: Ulrich & Michael Leodolter

I have a question as I'm not really up to speed on blocking socket calls. 
Comer (1995) in his book says that the call (ex. select) will block (or 
halt program execution) until something happens. This is the default 
behavior of accept, at least that's what I see in my programs. If TCPLIB 
as quoted above doesn't support blocking socket calls,

a) does it return immediately? (i.e. *timeout == 0)
b) is *timeout > 0 supported? (block for specified time?)

I got the impression (from my DJGPP port of a Unix daemon) that only 
polling I/O is supported. Is this right? can I "simulate" the default 
Unix accept behavior like so:

   new_sock = -1;
   while (new_sock == -1) new_sock = accept (...);

is this valid? how do I check for error conditions? (at least, for 
select, bits are set so we can differentiate true error conditions from 
those that just return nothing due to non-blocking behavior)

Also, how stable is TCPLIB? can "real" TCP/IP applications (i.e. web 
daemons) be implemented with this library with a reasonable assurance of 
reliability?

Thanks and regards,

Orly

NB reply to address below:
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|  Orlando A. Andico                 "I have no concept of time, other than  |
|  oandico AT eee DOT upd DOT edu DOT ph               it is flying." -- Alanis Morissette  |
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