TcpTimeoutRexmt after NC_NetStop(1)

S D

Other Parts Discussed in Thread: EK-TM4C1294XL

Hello,

I'm currently stuck on an issue where I start to get "TcpTimeoutRexmt: Retransmit Timeout" notifications after I reset the NDK using "NC_NetStop(1)".

My setup:
Running on EK-TM4C1294XL launchpad.
tirtos_tivac_2_14_04_31
Using XGCONF to configure.

Code:
I added a slight modification to the "httpget" example that calls "NC_NetStop(1)" anytime the link state changes to removed.
I attached a zip file of the project that should reproduce the issue.

I have tried increasing all network stack sizes to 4096 minimum but it doesn't change the behavior (I saw this recommendation for another thread that was 3 years old).

Any help would be much appreciated.

Thanks,
Subhash

.4237.httpget_EK_TM4C1294XL_TI_TivaTM4C1294NCPDT.zip

over 10 years ago

0 S D over 10 years ago

Intellectual 550 points

Additional explanation:
My intention is to handle Ethernet link removal and re-connection (and acquiring a new IP address). If there is a better way to do this, I am all ears.

0 S D over 10 years ago in reply to S D

Intellectual 550 points

Seems like I am misusing NC_NetStop(1)?

If I handle it as proposed in this other answer, the issue no longer happens.
e2e.ti.com/.../1790791

It's not clear to me why I can't restart the NDK using "NC_NetStop(1)" without causing these retransmit errors with excessive delays on HTTP communications.

0 Alan DeMars over 10 years ago in reply to S D

TI__Mastermind 30830 points

I'll consult with a local NDK expert for an opinion.

Alan

0 Alan DeMars over 10 years ago in reply to Alan DeMars

TI__Mastermind 30830 points

Here is a recent thread that describes the use cases for NC_NetStop():

e2e.ti.com/.../501050

Alan

0 S D over 10 years ago in reply to Alan DeMars

Intellectual 550 points

Hi Alan,

Thanks for the reply. While that explains the proper use cases. It doesn't explain why I am getting re transmit errors consistently after running the NC_NetStop(1) command. I can only guess that there must be something else that I need to clear out as well.

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TcpTimeoutRexmt after NC_NetStop(1)