Desktop app could not connect on Linux under VPN

[mtgit19]

I'm facing a connection issue after I have upgraded my OS from Debian 10 to Debian 11: the desktop app could not connect (and displaying a message: "Connection lost. Try again") when I'm connected to my work VPN. This happens even if I'm starting the app with the proxy option: --proxy-server=http://proxy-host:proxy-port

OS: Debian 11
Desktop Environment: KDE Plasma 5.20.5
Kernel Version: 5.10.0-18-amd64
Tutanota Version: 3.100.2

the monkey has been patched
(node:27443) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use tutanota-desktop --trace-deprecation ... to show where the warning was created)
version: 3.100.2
resolving key... tutanota-vault
...
Webapp ready
[27443:0930/140306.430573:ERROR:browser_main_loop.cc(271)] Gtk: gtk_widget_add_accelerator: assertion 'GTK_IS_ACCEL_GROUP (accel_group)' failed
autoUpdater info:
Checking for update
...
[ProtocolProxy] error for GET https://mail.tutanota.com/rest/sys/session/Mj0lTIe--J-2/HHkaMgC77wQjVGeTBGLjcBn9Ozt29DS81mnwRrZnw2w:
[ProtocolProxy] dn [Error]: net operation failed with code -7
at ClientRequest. (/tmp/.mount_tutanoOC3Ssh/resources/app.asar/desktop/DesktopMain.js:1:47208)
at ClientRequest.emit (node:events:526:28)
at TLSSocket.emitRequestTimeout (node:_http_client:758:9)
at Object.onceWrapper (node:events:645:28)
at TLSSocket.emit (node:events:538:35)
at Socket._onTimeout (node:net:501:8)
at listOnTimeout (node:internal/timers:559:17)
at process.processTimers (node:internal/timers:502:7) {
code: -7
}
[ProtocolProxy] {"name":"Error","message":"net operation failed with code -7","stack":"Error: net operation failed with code -7\n at ClientRequest. (/tmp/.mount_tutanoOC3Ssh/resources/app.asar/desktop/DesktopMain.js:1:47208)\n at ClientRequest.emit (node:events:526:28)\n at TLSSocket.emitRequestTimeout (node:_http_client:758:9)\n at Object.onceWrapper (node:events:645:28)\n at TLSSocket.emit (node:events:538:35)\n at Socket._onTimeout (node:net:501:8)\n at listOnTimeout (node:internal/timers:559:17)\n at process.processTimers (node:internal/timers:502:7)"}
[ProtocolProxy] failed after 20074ms

[charlag]

You are trying to pass proxy but I suspect that Electron is only applying it to the requests made from the web part. For some time we proxy all requests via native code which doesn't take proxy into account.

[mtgit19]

Thank you for your reply.
Is there any way to make this work? Do I have other options to make the proxy available to the desktop app?

[charlag]

I don't think there's a way to make it work at the moment, sorry

[mtgit19]

Ok. Thank you for your help.
Just wanted to add that I'm not tempted to use Tutanota desktop app. if I'm not able to connect behind a VPN. For security reasons...

[ghost]

Tbh, electron based services really don't need a dedicated application. It's literally worthless. Just enjoy it on your beloved browser.

[databasicsllc]

Liking the electron client, personally. On the proxy situation, there are some countries blocking tutanota at top level because it's so based and awesome. My employees have to use VPN in those places to get to our shiny new encrypted backend in Germany. I'd love to see proxy setting built into the app settings.