Large object models cause request issues when M409 and rr_model used at the same time

[T3P3]

503 errors occur in DWC running duet2 ethernet with a large Object Model, when a PanelDue is also connected.

The proposed solution it to ensure only one of the channels can query the OM at one time.

[dc42]

Added a mutex so that PanelDue and HTTP don't generate an object model response concurrently. Still need to delay generating that response if insufficient buffer space available.

[dc42]

Fixed in 3.5-dev.

[AlexKid007]

Hi @dc42,

today I updated my Duet2 Ethernet to Version 3.5.2. I still get disconnect and reconnect messages very frequently on web interface console page.