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RE: [lwip-users] Regarding Packet Loss in UDP mode - LwIP TCP/IP stack

From: revathy
Subject: RE: [lwip-users] Regarding Packet Loss in UDP mode - LwIP TCP/IP stack
Date: Wed, 3 May 2006 14:42:00 +0530

Hi Kieran,
                Thanks a lot for trying to attempt my problem.

        Yes, as you said in UDP mode, packet loss is common.
But, I tried with less traffic situation, meaning PC to board alone (static
and no switch in between (This is by using crossover cable).
        In that case also packet loss is happening, if iam not using the
what can I do?


-----Original Message-----
From: address@hidden
Behalf Of Kieran Mansley
Sent: Wednesday, May 03, 2006 1:31 PM
To: Mailing list for lwIP users
Subject: Re: [lwip-users] Regarding Packet Loss in UDP mode - LwIP
TCP/IP stack

On Wed, 2006-05-03 at 10:13 +0530, revathy wrote:
> Hi,
>    I am working on ADSP-BF533, board with USB LAN EZ extender card.
> In that card we had preloaded LwIP stack.
> Currently we wanted to stream the data from ADSP BF533 board to an another
> PC.
> While doing so, I am facing a packet loss in UDP mode.
> This got fixed by giving sleep(100) for every packet.
> I don't want this sleep(100), because it creates delay.

It sounds as though when trying to send at a high data rate you get
packet loss, but the sleep(100) slows everything down sufficiently that
whatever is dropping packets can keep up.  Note that with UDP packet
loss is not particularly surprising, or necessarily a bug.  I suggest
you track down where the packets are being dropped - this should make
the reason for the loss more obvious, and so make it possible to suggest
a solution.


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