lwip upgradation

giksonca
Posts: 17
Joined: Fri Sep 14, 2018 11:30 am

lwip upgradation

Postby giksonca » Wed Feb 20, 2019 6:21 am

We want to upgrade ESP32 lwip version to 2.1.2 from 2.0.3. Is there any impact if we upgrade ?

ESP_Angus
Posts: 2344
Joined: Sun May 08, 2016 4:11 am

Re: lwip upgradation

Postby ESP_Angus » Wed Feb 20, 2019 7:06 am

Yes, this is a substantial undertaking. ESP-LWIP project has a number of patches which are not in the upstream LWIP. You can diff the upstream 2.0.3 release with the current ESP-LWIP HEAD commit to see the differences.

Updating to 100% upstream LWIP without these patches will probably result in some crashes and incorrect TCP/IP functionality. At least some patches would need to be applied to the upstream release.

I'm not sure what the current timetable for the next official ESP-LWIP update is.

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