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Re: [lwip-users] TCP problem

From: Alain Mouette
Subject: Re: [lwip-users] TCP problem
Date: Tue, 20 Oct 2009 13:12:26 -0200
User-agent: Thunderbird (X11/20080914)

May I suggest that a comment about this be added in the config file.

A special page on the wiki about configuring the many buffers in LWIP would be awsome too... This is a very obscure area in lwip config :(


David Shmelzer escreveu:
Mine works now too.
I was also having the same problem where the window size kept decreasing.
Thanks all.


-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Jan Wester
Sent: Tuesday, October 20, 2009 8:34 AM
To: 'Mailing list for lwIP users'
Subject: SV: [lwip-users] TCP problem

I change my WND to 1024 (2*MSS) and now it works

Thanks Simon and Kieran for your help

Med vänliga hälsningar/Best Regards
Jan Wester

WHI Konsult AB
Scheelegatan 11, SE-112 28 Stockholm
+46 8 449 05 30
+46 705 36 77 22

-----Ursprungligt meddelande-----
Från: address@hidden
[mailto:address@hidden För Simon Goldschmidt
Skickat: den 20 oktober 2009 10:53
Till: Mailing list for lwIP users
Ämne: Re: [lwip-users] TCP problem

WND = 512
MSS = 512

Having WND == MSS is generally not a good idea regarding throughput because 
that raises problems both with the nagle and delayed ack algorithm. You should 
at least make sure the nagle algorithm is turned off when having WND == MSS, 
although you can then still have problems with delayed ack of the remote side.


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