Re: [lwip-users] Problems while loading http contens - Email found in subject

[Bernhard 'Gustl' Bauer]

Tamas,

lwipopts.h says:
#define TCP_MSS                         1460
#define TCP_SND_BUF                     (16*TCP_MSS)
#define TCP_SND_QUEUELEN                (4 * (TCP_SND_BUF/TCP_MSS))

So TCP_SND_QUEUELEN is 64. My largest File is m1.html with 26kB. I'm not 
sure about the calculation but I think TCP_SND_QUEUELEN is big enough, 
although it doesn't fit into TCP_SND_BUF.

thanks Gustl

Tamas Somogyi schrieb:
> Gustl,
>
> Did you try to increase TCP_SND_QUEUELEN? By default it allows to
> transfer small amount of data simultaneously, so "large" (10-15kb)
> javascript, gif, etc. files will be partially transmitted only. I'm not
> sure whether your problem is related to this issue, but it's quick to
> check by adjusting queue length according to your file sizes.
>
> Regs,
> Tamas
>  
>
> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden On
> Behalf Of Bernhard 'Gustl' Bauer
> Sent: 02 March 2009 10:06
> To: Mailing list for lwIP users
> Subject: Re: [lwip-users] Problems while loading http contens - Email
> found in subject
>
> Mike Kleshov schrieb:
> > 1) I know that Firefox can be configured to limit the number of TCP
> > connections. There is an option somewhere in about:config. But this is
> > not a nice solution.
>
> No, it isn't. It should not work with Firefox only.
>
> > 2) The maximum number of simultaneous TCP connections is configurable
> > in lwipopts.h:
> > #define MEMP_NUM_TCP_PCB
>
> opt.h says:
> #define MEMP_NUM_TCP_PCB                10
>
> > Perhaps, HTTP persistent connections could also limit the number of
> > open connections between the browser and the server, but I am not sure
> > about this.
>
> The connection is opened and is reset after the GET ist received. So 
> maybe it isn't possible to open two files at once. But couldn't the 
> second file be delayed?
>
> Gustl
>
>
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