"Connection closed" message when syncing files larger then +- 100Mb

[Jhutjens92]

I have my nextcloud installation running in a docker container. It's connected to a MySQL DB (another docker container) and exposed to the web using SWAG. All the relevant php.ini/config files have the following settings

• client_max_body_size set 0
• upload_max_filesize 16G
• post_max_size 16G
• max_input_time 3600
• max_execution_time 3600

Uploading via webserver is no problem but whenever i try to sync the same file using the windows sync client i receive a "Connection Closed"

Expected behaviour

Files should just upload to the nextcloud server.

Actual behaviour

Files aren't being uploaded and client throws an error:

Steps to reproduce

1. Run nextcloud in docker container.
2. Use SWAG (docker container) to link (sub)domain to nextcloud
3. Upload large file (larger then 100Mb) (in my case a .mp4)
4. See response in client log.

Client configuration

Client version: 3.4.2

Operating system: Microsoft Windows 10 Pro (10.0.19041 Build 19041)

OS language: Dutch

Installation path of client: C:\Program Files\Nextcloud

Nextcloud version: Nextcloud Hub II (23.0.0)

Storage backend: Local server storage

Logs

1. Client logfile:
   Client_20220213_2039_owncloud.log.0.txt

2. Web server error log:
   N.A.

3. Server logfile: nextcloud log (data/nextcloud.log):
   nextcloud.log

(ignore the failed login)

[metheis]

are you using Cloudflare in your setup? I'm running into the same issue because of Cloudflare's 100 MB upload limit and the client not seeming to chunk.
#4271

[Jhutjens92]

are you using Cloudflare in your setup? I'm running into the same issue because of Cloudflare's 100 MB upload limit and the client not seeming to chunk. #4271

I am using cloudflare for SSL on SWAG with my domain. I didn't even stop to think about it. Did you figure out a way around it/fix? Nextcloud is chunking the file (correct me if I'm wrong) so something is not working as intented. I could turn off cloudflare for my subdomain but that would defeat the purpose of using it in the first place.

[metheis]

Right, agreed, I prefer to keep Cloudflare on. What I found works is if I uninstall the client (I had version 3.4.1) and reinstall version 3.3.6 from October, the issue goes away. I think the issue must be with how the newer client chunks (or lack there of).

[Jhutjens92]

Version 3.3.6 is confirmed to be working. Just tested it out. So something in 3.4.1 broke the chunking.

[metheis]

@allexzander is it possible you could weigh in on this? Thank you for your help

[xt0x1c]

same here

[tusharraval102]

I can confirm that I have the same issue. I recently upgraded to 3.4.2 and my client app would not sync files larger than 100mb. I just downgraded to 3.3.6 and it works without any issues. I am using CloudFlare, MacOS Monterey, and the latest NextCloud server.

[metheis]

@Valdnet or @er-vin it seems like a number of users are running into this issue starting with 3.4.1 (and still present in 3.4.2). Any thoughts on what change lead to this?

[Valdnet]

@nextcloud/desktop Is it possible to check the described error in issue. Users still have a problem with this.
Thanks.

[ThatTallGuy21]

I'm on 3.4.1 as well and utilize SSL via CF with Nginx. Running into the same issue as described.

[Vixavius]

I was experiencing the same issue with 3.4.2.

v3.3.6 working well.

This is happening to me, I am using cloudflare and the 100MB limit doesn't affect my upload but the client is bringing up errors when uploading files, i'm trying 3.3.6 now to see if this is just a bug

Yep I can confirm on my side aswell version 3.3.6 works fine then latest client broke chunking and possibly keep alive "closing connection"