[GUACAMOLE-1191] Disable caches which FreeRDP no longer considers supported

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Done
• Affects Version/s: 1.1.0, 1.2.0
• Fix Version/s: 1.4.0
• Component/s: RDP
• Environment: RHEL7.9
• Assignee: Mike Jumper
• Reporter: David S. Jones
• Created: 03/Oct/20 21:57
• Updated: 28/Sep/21 06:05
• Resolved: 10/Jan/21 04:00

Description

While the various RDP caches have previously been enabled by default for FreeRDP, this changed with commit 5a2c249 for releases 2.0.0 and later. The glyph cache is now marked as "experimental" and is disabled by default.

Unfortunately, while the failures within the caches have been reported upstream via GitHub, FreeRDP has stated that the cache system within the library is known to be broken and that there is no intent to fix:

https://github.com/FreeRDP/FreeRDP/issues/6505#issuecomment-705732350

We should consider ways to safely disable these caches by default without overly breaking backward compatibility.

Issue Links

• fixes: GUACAMOLE-1250 Connection abnormal termination against RDP in Windows 7 or Windows 2008
• is duplicated by: GUACAMOLE-1272 Disconnect when right mouse button is clicked in windows desktop
• is duplicated by: GUACAMOLE-1427 guacamole client crash while user use command line in remote desktop
• is duplicated by: GUACAMOLE-1258 Not anymore able to login into WIndows7 via RDP
• is duplicated by: GUACAMOLE-1308 guacd 1.3.0 disconnects immediately after windows logon
• is duplicated by: GUACAMOLE-1363 Windows 7 sessions disconnect when certain events take place
• is related to: GUACAMOLE-1369 Cannot connect to older ubuntu versions when glyph cache is disabled