RTOS/EK-TM4C1294XL: http server file load failed

Allen_Tseng

Intellectual 420 points

Part Number: EK-TM4C1294XL

Tool/software: TI-RTOS

Hi,

I have problem with http server.

Device: EK-TM4C1294XL

software/tool: tirtos_tivac_2_16_01_14, ndk_2_25_00_09

I create a web server, which is following "http://processors.wiki.ti.com/index.php/TI-RTOS_HTTP_Example ".

I'm trying to show .gif file on web, but the file always load fail random.

My html code is below:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "www.w3.org/.../strict.dtd">
<html><head>
<meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"><title>Concerto HTTP Server</title>

</head><body>
Greetings Everyone 
<img style="width: 150px; height: 157px;" alt="" src="op_1_1.jpg"> 
<img style="width: 150px; height: 157px;" alt="" src="op_1_2.gif"> 
<img style="width: 150px; height: 157px;" alt="" src="op_2_1.gif"> 
<img style="width: 150px; height: 157px;" alt="" src="op_2_2.gif"> 
<img style="width: 150px; height: 157px;" alt="" src="op_2_3.gif"> 
<img style="width: 150px; height: 157px;" alt="" src="op_3_1.gif"> 
<img style="width: 150px; height: 157px;" alt="" src="op_3_2.gif"> 
<img style="width: 150px; height: 157px;" alt="" src="op_4_1.gif"> 
<img style="width: 150px; height: 157px;" alt="" src="op_4_2.gif"> 
</body></html>

and the package message in wireshark is below.(zip)

wireshark.zip

I can't solve this. Please help me to solve.

Thank you very much.

over 6 years ago

0 Charles Tsai over 6 years ago

TI__Guru**** 184346 points

So some of the gif files and jpeg files are ok?

0 Allen_Tseng over 6 years ago in reply to Charles Tsai

Intellectual 420 points

Hi Charles
Thanks for your response.
No, those files were failed and success in random.
Sometime all failed.
Sometime all succeed.
Sometime few succeed.

Allen

0 Charles Tsai over 6 years ago in reply to Allen_Tseng

TI__Guru**** 184346 points

I'm not an NDK expert. What is your TCP send and receive buffer sizes? Try to increase them and see if they help. If not, I will forward your question to our TI-RTOS expert. See below to change the size. If yours is 1024 then change to 2048 or something higher. Just double what you have for each of them and see if any different results.

0 Allen_Tseng over 6 years ago in reply to Charles Tsai

Intellectual 420 points

Hi Charles
Thanks for your response.

I tried, but still occur failed.

And I also tried increased other parameter(TaskStackSize, ndkThreadPri, ndkThreadStackSize, net SchedulePri, pktNumFramebufs, memRawPageCount, and let daemon to high priority), but not make better.

below is my ndk config

Allen

0 Charles Tsai over 6 years ago in reply to Allen_Tseng

TI__Guru**** 184346 points

I will forward your question to the TI-RTOS NDK expert.

Does it matter what the size of the gif files? Will it still fail with a very small gif file?

0 Allen_Tseng over 6 years ago in reply to Charles Tsai

Intellectual 420 points

Hi Charles

Thanks for your response.

I hadn't try this, but i found possible reason in wireshark.

Socket create(3 way) complete, but server send FIN message.

Why FIN message send.

Allen

0 ToddMullanix over 6 years ago in reply to Allen_Tseng

TI__Guru* 96960 points

Hi Allen,

Thanks for the wireshark dumps. Some thing looks strange. Can you attach the project and see if we can reproduce it?

Todd

0 Allen_Tseng over 6 years ago in reply to ToddMullanix

Intellectual 420 points

Hi,Todd
Thanks for your response.
Ok, I will upload my project on Monday.
I really need to solve this problem.
Thank you

Allen

0 Allen_Tseng over 6 years ago in reply to ToddMullanix

Intellectual 420 points

Hi Todd

My project is here.

When I press F5 key to refresh page, loading failed will happened.

And if repress F5 key very fast, will occur "page not found".

Please download and try it.

WebServerTest.zip

Thank you very much.

Allen

0 ToddMullanix over 6 years ago in reply to Allen_Tseng

TI__Guru* 96960 points

Hi Allen,

Thanks fort the example. I built and ran your application. I had to hit F5 many times, but I reproduced your issue of "page not found" when I had a Chrome browser on my laptop pointing at the target's IP address.

I checked CCS->Tools->ROV -> SysMin->OutputBuffer (after I paused the target) and saw a memory allocation failed. I enabled HeapTrack (more details here: training.ti.com/debugging-common-application-issues-ti-rtos) and increase the BIOS.heapSize to 65536 in the .cfg file. I rebuilt/ran the application. I started hitting F5 on the browser for 20-30 seconds as fast as I could with no problems. I checked ROV->HeapTrack->Basic and saw the high-watermark was ~60K. So basically you need to increase the heap size.

For more information about the networking stack's memory usage, please refer to this page: processors.wiki.ti.com/.../TI-RTOS_Networking_Stack_Memory_Usage

Todd

0 Allen_Tseng over 6 years ago in reply to ToddMullanix

Intellectual 420 points

Hi Todd
Thanks for your response.
The problem has been solved.
Thanks for your assistance

Allen

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RTOS/EK-TM4C1294XL: http server file load failed