<!-- MHonArc v2.4.4 -->
<!--X-Subject: fd_set limitations -->
<!--X-From-R13: Uert [hag <tertNhav-pbea.qrzba.pb.hx> -->
<!--X-Date: from major.globecomm.net [207.51.48.5] by mx01.ca.us.ibm.net id 862360652.204535-2 Wed Apr 30 00:37:32 1997 -->
<!--X-Message-Id: Pine.LNX.3.91.970430001410.4702A-100000@uni-corn.demon.co.uk -->
<!--X-Content-Type: text/plain -->
<!--X-Reference: 199704282310.QAA10193#xsvr3,cup.hp.com -->
<!--X-Head-End-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html>
<head>
<title>MUD-Dev message, fd_set limitations</title>
<!-- meta name="robots" content="noindex,nofollow" -->
<link rev="made" href="mailto:greg#uni-corn,demon.co.uk">
</head>
<body background="/backgrounds/paperback.gif" bgcolor="#ffffff"
text="#000000" link="#0000FF" alink="#FF0000" vlink="#006000">
<font size="+4" color="#804040">
<strong><em>MUD-Dev<br>mailing list archive</em></strong>
</font>
<br>
[ <a href="../">Other Periods</a>
| <a href="../../">Other mailing lists</a>
| <a href="/search.php3">Search</a>
]
<br clear=all><hr>
<!--X-Body-Begin-->
<!--X-User-Header-->
<!--X-User-Header-End-->
<!--X-TopPNI-->
Date:
[ <a href="msg00295.html">Previous</a>
| <a href="msg00297.html">Next</a>
]
Thread:
[ <a href="msg00269.html">Previous</a>
| <a href="msg00241.html">Next</a>
]
Index:
[ <A HREF="author.html#00296">Author</A>
| <A HREF="#00296">Date</A>
| <A HREF="thread.html#00296">Thread</A>
]
<!--X-TopPNI-End-->
<!--X-MsgBody-->
<!--X-Subject-Header-Begin-->
<H1>fd_set limitations</H1>
<HR>
<!--X-Subject-Header-End-->
<!--X-Head-of-Message-->
<UL>
<LI><em>To</em>: <A HREF="mailto:mud-dev#null,net">mud-dev#null,net</A></LI>
<LI><em>Subject</em>: fd_set limitations</LI>
<LI><em>From</em>: Greg Munt <<A HREF="mailto:greg#uni-corn,demon.co.uk">greg#uni-corn,demon.co.uk</A>></LI>
<LI><em>Date</em>: Wed, 30 Apr 1997 00:20:51 +0100 (GMT+0100)</LI>
</UL>
<!--X-Head-of-Message-End-->
<!--X-Head-Body-Sep-Begin-->
<HR>
<!--X-Head-Body-Sep-End-->
<!--X-Body-of-Message-->
<PRE>
On Mon, 28 Apr 1997 clawrenc#cup,hp.com wrote:
> >Also, an fd_set holds FD_SETSIZE file descriptors. Is it true that a
> >theroretically infinite number of FDs can be opened by the server,
> >and that I can handle > FD_SETSIZE connections by having some kind
> >of linked list of fd_sets?
>
> Almost always: No. The exceptions are so rare and so limited as to be
> ignorable (certain classes of list based OS'es etc).
Every connected socket uses up a socket descriptor. I think it is common
for FD_SETSIZE to be 256 (it is under GNU, anyway). So how would you be
able to maintain, say, 300 simultaneous connections?
Is this anything to do with port concentrators? I've heard of them, but have
no idea what they are, or what they are used for..
------------------------------------------------------------------------------
T H E F R O N T I E R S P R O J E C T
<A HREF="http://www.uni-corn.demon.co.uk">http://www.uni-corn.demon.co.uk</A> <A HREF="telnet://linux2.cms.shu.ac.uk:9999">telnet://linux2.cms.shu.ac.uk:9999</A>
I'll stay out of animals' way if they'll stay out of mine
"Hey you, get off my plate"
</PRE>
<!--X-Body-of-Message-End-->
<!--X-MsgBody-End-->
<!--X-Follow-Ups-->
<HR>
<!--X-Follow-Ups-End-->
<!--X-References-->
<UL><LI><STRONG>References</STRONG>:
<UL>
<LI><STRONG><A NAME="00269" HREF="msg00269.html">Re: [MUD-Dev] Semaphores, Mutices, fd_sets</A></STRONG>
<UL><LI><EM>From:</EM> clawrenc#cup,hp.com</LI></UL></LI>
</UL></LI></UL>
<!--X-References-End-->
<!--X-BotPNI-->
<UL>
<LI>Prev by Date:
<STRONG><A HREF="msg00295.html">Re: [MUD-Dev] Re: Issues from the digests and Wout's list</A></STRONG>
</LI>
<LI>Next by Date:
<STRONG><A HREF="msg00297.html">Re: [MUD-Dev] Re: Combat</A></STRONG>
</LI>
<LI>Prev by thread:
<STRONG><A HREF="msg00269.html">Re: [MUD-Dev] Semaphores, Mutices, fd_sets</A></STRONG>
</LI>
<LI>Next by thread:
<STRONG><A HREF="msg00241.html">Re: [MUD-Dev] Re: Verb binding</A></STRONG>
</LI>
<LI>Index(es):
<UL>
<LI><A HREF="index.html#00296"><STRONG>Date</STRONG></A></LI>
<LI><A HREF="thread.html#00296"><STRONG>Thread</STRONG></A></LI>
</UL>
</LI>
</UL>
<!--X-BotPNI-End-->
<!--X-User-Footer-->
<!--X-User-Footer-End-->
<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><strong><A NAME="00247" HREF="msg00247.html">Re: MUD languages</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Sun 27 Apr 1997, 00:10 GMT
<UL>
<LI><strong><A NAME="00270" HREF="msg00270.html">Re: [MUD-Dev] Re: MUD languages</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Tue 29 Apr 1997, 06:18 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00246" HREF="msg00246.html">Semaphores, Mutices, fd_sets</A></strong>,
Greg Munt <a href="mailto:greg#uni-corn,demon.co.uk">greg#uni-corn,demon.co.uk</a>, Sat 26 Apr 1997, 22:58 GMT
<UL>
<LI><strong><A NAME="00269" HREF="msg00269.html">Re: [MUD-Dev] Semaphores, Mutices, fd_sets</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Tue 29 Apr 1997, 06:06 GMT
<UL>
<LI><strong><A NAME="00296" HREF="msg00296.html">fd_set limitations</A></strong>,
Greg Munt <a href="mailto:greg#uni-corn,demon.co.uk">greg#uni-corn,demon.co.uk</a>, Wed 30 Apr 1997, 07:37 GMT
</LI>
</UL>
</LI>
</UL>
</LI>
<LI><strong><A NAME="00241" HREF="msg00241.html">Re: [MUD-Dev] Re: Verb binding</A></strong>,
ashen <a href="mailto:ashen#pixi,com">ashen#pixi,com</a>, Sat 26 Apr 1997, 11:50 GMT
<UL>
<LI><strong><A NAME="00266" HREF="msg00266.html">Re: [MUD-Dev] Re: Verb binding</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Tue 29 Apr 1997, 05:49 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00237" HREF="msg00237.html">Sendmail changes</A></strong>,
coder <a href="mailto:coder#ibm,net">coder#ibm,net</a>, Sat 26 Apr 1997, 10:46 GMT
<LI><strong><A NAME="00234" HREF="msg00234.html">Re: [MUD-Dev] Re: Verb binding</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Sat 26 Apr 1997, 06:27 GMT
</LI>
</UL></BLOCKQUOTE>
</ul>
<hr>
<center>
[ <a href="../">Other Periods</a>
| <a href="../../">Other mailing lists</a>
| <a href="/search.php3">Search</a>
]
</center>
<hr>
</body>
</html>