Description
Board
esp32-s2 dev module
Device Description
generic, wifi issue, no hardware effected or needed to reproduce
Hardware Configuration
nothing
Version
v3.0.4
IDE Name
arduino 1.8.19
Operating System
win10
Flash frequency
80
PSRAM enabled
no
Upload speed
921600
Description
CaptivePortal.ino example sketch from the DNSServer library, no modifications to code.
working example works in v2.x, meaning a samsung s23 running android 14 will load the captive portal automatically when connecting to the SoftAP. ios also works.
Not Working example in v3.x, meaning a samsung s23 running android 14 will NOT load the captive portal automatically when connecting to the SoftAP. it can be accessed via the browser when forced to stay connected, but not reliable nor a good user experience. ios devices do not have the issue, they work.
Note: there have been many documented issues of esp32 captive portals not loading on newer android devices for over 4 years. some work around methods point blame at the use of certain private IPs used for the soft AP of the esp32, and other solutions mention the issue is related to the http responses 200 vs 302, etc.
i am still trying to figure out why this works in v2 and not in v3, but this may be over my head as I am out of ideas. I think having the official example working would benefit many people that may be searching for a solution also.
Sketch
working
https://github.com/espressif/arduino-esp32/blob/release/v2.x/libraries/DNSServer/examples/CaptivePortal/CaptivePortal.ino
not working (for android 14 devices)
https://github.com/espressif/arduino-esp32/blob/release/v3.1.x/libraries/DNSServer/examples/CaptivePortal/CaptivePortal.inoDebug Message
none, both compile and run
Other Steps to Reproduce
No response
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.