DWC2 half connected?

Phaedrux

firmware and DWC version?
Browser?
Board?

r123

Board: Duet WiFi 1.02 or later + DueX5
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 2.05 (2019-12-13b1)
Duet WiFi Server Version: 1.23

r123

Oh and Safari / OSX Catalina

themelle

Same here, though with

DuetWifi 1.04
DuetWifiServer 1.23
RRF 3.0b12
Safari on macOS 10.15.x (Catalina)

Veti

@r123 said in DWC2 half connected?:

Oh and Safari / OSX Catalina

there is a new mechanic in osx which suspends the js thread when the tab is not in foreground.
that is what is causing the problem.
try firefox or chrome.

themelle

@Veti
I can not speak for @r123, but for me this is happening 90% of the time I go to the DWC URL in Safari for the first time. The tab is in the foreground while doing this.

r123

@themelle yep I get it when I launch DWC 2 for the first time having just powered up the printer and with a new tab always in the foreground: can see the flickering temperatures but can't access the controls so have to immediately perform a page reload.

Veti

@themelle
does it work in firefox or chrome?

r123

Firefox comes up bright and good on first load of the page.

Safari seems to require two loads.

Safari: Version 13.0.4 (15608.4.9.1.3)

themelle

@Veti said in DWC2 half connected?:

@themelle
does it work in firefox or chrome?

It does work in Chrome.
No clue about Firefox as I don't use it.

Safari JavaScript console says
"WebSocket connection to 'ws://ikossel.local/machine' failed: Unexpected response code: 200"
on opening DWC.

(though a HTTP 200 does not seem like an unusual response code to me)

Maybe @chrishamm has an idea?

chrishamm

The implementation of the "Connecting" dialog (including the annoying gray backdrop) has changed in DWC 2.0.5. I haven't been able to reproduce this bug since then.