Freezes occur on subsequent syncs over WebDAV

[stormlash]

Ever since upgrading to 1.7.2, I find that mobileorg.org regularly freezes while showing "Syncing Org-files: mobileorg.org".

Steps to reproduce:

1. Launch MobileOrg
2. Sync. It will sync the Org-files and complete successfully
3. Sync again. It will report "Syncing changes" and iterate through "mobileorg.org", "checksums.dat", and "index.org" before displaying "mobileorg.org" again and pausing. After a few moments, the label will change to "Syncing Org-files", but it will still be stuck on mobileorg.org. The only way to get past this screen is to force-close the app and resync.

Configuration:
iPhone 7+
MobileOrg 1.7.2
WebDAV sync (using https and a trusted self-signed certificate)

[mgmart]

Did this also happen with the TestFlight version?

[stormlash]

No idea. TestFlight didn't notify me that a new version was available, and currently does not list me as an approved tester.

…

On Thu, Apr 13, 2017 at 1:13 PM, Mario Martelli ***@***.***> wrote: Did this also happen with the TestFlight version? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#185 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ACqLQDjjhzX1RHUCTFeeVjkYGX8n8c7yks5rvleegaJpZM4M8r_-> .

-- Peter Sahlstrom peter@stormlash.net http://peter.stormlash.net

[ustcpxy]

after upgraded to 1.7.2, I also have this issue.
Configuration:
iPhone 6s
MobileOrg 1.7.2
WebDAV sync (using https and a trusted self-signed certificate)

[mgmart]

It seems it comes down to the self signed certificates.

There could be a different behaviour of iOS whether you're trusting the certificates or the CA. Trusting the CA is the preferred way.

We do need a test environment for that. I could imagine that using this docker repo could help to create (automated) tests for this issue.

PRs containing a test environment for this issue would be very welcome.

[mgmart]

Could it be that the freeze only happens if changes on the iPhone are synced back to the server?

[stormlash]

Yes, I think that's quite possible - though I still see it even if nothing has changed on the iPhone.

[stormlash]

Ok - so I'm pretty convinced that this isn't related to certificate signing. I bit the bullet and swapped out my webdav cert with one generated through LetsEncrypt (which is automatically trusted by my iPhone), but the behavior is exactly the same: the sync freezes while displaying "Syncing Org-files".

[mgmart]

Thank you @stormlash. That helps. I think I've found the issue.