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[lwip-users] How to force dup ACK

From: yueyue papa
Subject: [lwip-users] How to force dup ACK
Date: Thu, 15 Apr 2010 15:32:26 +0800

Hi All,

I use lwIP in GPRS environment.  Wireshark is setup in the server.  I
find these information:

lwip  device  <--------------------> server (Wireshark running there)

if  TSS = 512, the TCP stream is working very stable.

if TSS = 1024, 1460, there is always TCP ACK lost in server. The
resend is always happen.

The resend cause the performance down.

Is there a solution I could configure lwIP make duplicate ACK send, so
as to decrease the ACK lost possibility?


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