[GUACAMOLE-1304] Is guac 1.3 failing to report actual resolution on vmconnect initial connection?

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.3.0
• Component/s: RDP
• Environment: Debian buster
• Assignee: Unassigned
• Reporter: Matt Boothman
• Created: 28/Feb/21 12:58
• Updated: 08/Mar/21 15:17

Description

I have an issue when connecting to VMs where the resolution is set differently to the normal 1024x768 resolution. The JS client doesn't receive a second `size` (command?) from the java client, as it used to in our old 0.9.14 installation.

Steps to reproduce:

1. Create a Windows 10 VM in Hyper V (or graphical Linux, I don't think guest OS matters)
2. Connect to the VM from guacamole, without enhanced mode
3. Set the VM resolution to 1152x864 (the display is resized accordingly)
4. Disconnect the cuacamole session
5. Reconnect the guacamole session
6. VM display fails to appear

Versions:

• Guacamole, everything 1.3
• Hyper-V Server 2019, Windows 10, no version change for hyper-v between upgrade from 0.9.14 and 1.3
• FreeRDP version 2.2 (buster backports)

Guacd debug:

Guacd is receiving the updated resolution from FreeRDP, and I checked FreeRDP using xfreerdp which works as expected. Debug logs, that I think are relevant, are:

 

Feb 28 10:37:00 guactest guacd[4519]: Sending
 Feb 28 10:37:00 guactest guacd[4519]: BitmapCapabilitySet (length 24):
 Feb 28 10:37:00 guactest guacd[4519]: #011preferredBitsPerPixel: 0x0010
 Feb 28 10:37:00 guactest guacd[4519]: #011receive1BitPerPixel: 0x0001
 Feb 28 10:37:00 guactest guacd[4519]: #011receive4BitsPerPixel: 0x0001
 Feb 28 10:37:00 guactest guacd[4519]: #011receive8BitsPerPixel: 0x0001
 Feb 28 10:37:00 guactest guacd[4519]: #011desktopWidth: 0x0400
 Feb 28 10:37:00 guactest guacd[4519]: #011desktopHeight: 0x0300
 Feb 28 10:37:00 guactest guacd[4519]: #011pad2Octets: 0x0000
 Feb 28 10:37:00 guactest guacd[4519]: #011desktopResizeFlag: 0x0001
 Feb 28 10:37:00 guactest guacd[4519]: #011bitmapCompressionFlag: 0x0001
 Feb 28 10:37:00 guactest guacd[4519]: #011highColorFlags: 0x00
 Feb 28 10:37:00 guactest guacd[4519]: #011drawingFlags: 0x0E
 Feb 28 10:37:00 guactest guacd[4519]: #011multipleRectangleSupport: 0x0001
 Feb 28 10:37:00 guactest guacd[4519]: #011pad2OctetsB: 0x0000
 
...
 
Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: Receiving
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: BitmapCapabilitySet (length 24):
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011preferredBitsPerPixel: 0x0010
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011receive1BitPerPixel: 0x0001
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011receive4BitsPerPixel: 0x0001
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011receive8BitsPerPixel: 0x0001
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011desktopWidth: 0x0480
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011desktopHeight: 0x0360
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011pad2Octets: 0x0000
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011desktopResizeFlag: 0x0001
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011bitmapCompressionFlag: 0x0001
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011highColorFlags: 0x00
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011drawingFlags: 0x1E
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011multipleRectangleSupport: 0x0001
 Feb 28 10:38:00 GD-UKN-RDE2-06 guacd[4519]: #011pad2OctetsB: 0x0000

is guacd ignoring the recieved BitmapCapabilitySet and failing to relay through the java app?