Re: iperf UDP server fails with multiple clients

To: iperf-users --at-- dast.nlanr.net
Subject: Re: iperf UDP server fails with multiple clients
From: Marc Herbert <marc.herbert --at-- free.fr>
Date: Wed, 14 Sep 2005 00:56:28 +0200 (CEST)
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On Tue, 13 Sep 2005, Adhiraj wrote:

> Why is this happening? Why it is waiting for acks in the first place if
> its using UDP?

Quite the opposite: it's when using _TCP_ that it would make no sense
for iperf to send acks, since TCP provides a reliable service to
iperf.

And by the way iperf has obviously no way to know about TCP acks,
which are private to TCP internal implementation. Trying to know about
this would probably imply some system-dependent hacks violating the
layered abstractions of TCP/IP (if ever possible) and iperf is highly
portable, pure user-level application.

References:
- iperf UDP server fails with multiple clients
  - From: Adhiraj

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