lkml.org 
[lkml]   [2004]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: UDP recvmsg blocks after select(), 2.6 bug?
On Fri, Oct 15, 2004 at 03:42:55PM -0700, Robert White wrote:
> -----Original Message-----
> From: linux-kernel-owner@vger.kernel.org [mailto:linux-kernel-owner@vger.kernel.org]
> On Behalf Of Willy Tarreau
>
> > As I asked in a previous mail in this overly long thread, why not returning
> > zero bytes at all. It is perfectly valid to receive an UDP packet with 0
>
> Zero bytes is "end of file". Don't go trying to co-opt end of file. That way lies
> madness and despair.

Please explain me what "end of file" means with UDP. If your UDP-based app
expects to receive a zero when the other end stops transmitting, then it
might wait for a very long time. As opposed to TCP, there's no FIN control
flag to tell the remote host that you sent your last packet.

Willy

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:07    [W:0.171 / U:1.104 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site