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Re: [lwip-users] Embedded web page access needs refresh with Google Chro

From: Sujith K V
Subject: Re: [lwip-users] Embedded web page access needs refresh with Google Chrome
Date: Thu, 26 Jul 2012 20:37:18 +0530

Hi Simon,

Many thanks for your time and valuable inputs. We tried with the
latest version of httpserver_raw and it worked !

Thanks again for the quick help !


On 7/26/12, Simon Goldschmidt <address@hidden> wrote:
> Sujith K V <address@hidden> wrote:
>> Thanks a lot for replying to this. The wireshark logs are attached for
>> both the conditions.
>> The IP Address of the board is
>> Page_Loaded_OK.pcap  - The embedded webpage is loaded
>> Page_Not_Loaded - The embedded webpage is not loaded
>> Can we get any clue from these ?
> In "Loaded_OK", the browser seems to open 5 parallel connections to your
> board. Each connection is only used for loading one file (as the httpd does
> not support persistent connections) and so (as you can see in "Loaded_OK")
> the browser opens a new connection every time one of the previous
> connections closes.
> In contrast to this, in "Not_Loaded", the browser seems to open 6 parallel
> connections. And as you can see at the end of the log (or when
> right-clicking on the last connection where "/board.js" is requested and
> selecting "Follow TCP Stream"), your board does not answer this request
> (packet 34). Then, when the browser retransmits the request (packet 144),
> the board simply returns an ACK instead of sending data in the first
> response packet like for all other file requests.
> I wonder if you are in some way limited to 5 connections on the httpd? This
> depends largely on which version of httpd.c you are using and how you have
> configured it, but if you can debug your target, you might see
> http_state_alloc() returning NULL for the 6th connection. Depending on how
> you have configured httpd, you might want to increase either the memp-pool
> HTTPD_STATE, or increase the heap size (configured through MEM_SIZE) to have
> mor ram for http connections.
> Simon
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