I use my own NAS as a webdav destination for Joplin , the address is :
http://xxxx.tpddns.cn:5005/16625198223/joplin
( tpddns.cn is a free ddns service by my TP-link router)
It works very fine in my macbook Joplin , perfect sync ,quick and accurate.
But so curious , I COPY the exact address to my iphone , it doesn't work , when run "check synchronisation configuration" ,it shows "network request failed" error.
about this problem , I post before in Synchronisation works fine on MAC , but failed on IOS (webdav), but no useful answer .
One day coincidentally ,I find if I change the domain name to real-time IP address, it works fine in iphone,
like this :
http://183.16.90.221:5005/16625198223/joplin
I can't do this operation all the time because the IP changes every 20-30 hours due to my ISP , that's why I need a ddns services to access my NAS on public-net-environment.
so why ? I am so y curious , and how to solve this problem?
macos: catalina 10.15.4
joplin mac version : 2.9.17
ios:16.1.1
joplin ios version:12.10.5
thanks for your kind answer