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https://issues.apache.org/jira/browse/GUACAMOLE-262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Jumper updated GUACAMOLE-262:
-------------------------------------
Description:
I was having trouble getting Guacamole to connect to ESX 6.5's VNC server. The
issue is reported here - https://github.com/LibVNC/libvncserver/issues/141
Using TightVNC, TigerVNC, UltraVNC, and Chicken of the VNC the connection
worked fine - only Guacamole failed. After some Wireshark sleuthing I found
that libvncserver's client by default sets the trueColour flag to TRUE (which
is -1 which is 255), whereas all of the other clients listed above set this
flag to 1. Although the spec is vague - it says non-zero is "true" - I would
suggest setting this flag to 1 to maximize compatibility:
{code:none}
void guac_vnc_set_pixel_format(rfbClient* client, int color_depth) {
client->format.trueColour = 1;
{code}
was:
I was having trouble getting Guacamole to connect to ESX 6.5's VNC server. The
issue is reported here - https://github.com/LibVNC/libvncserver/issues/141
Using TightVNC, TigerVNC, UltraVNC, and Chicken of the VNC the connection
worked fine - only Guacamole failed. After some Wireshark sleuthing I found
that libvncserver's client by default sets the trueColour flag to TRUE (which
is -1 which is 255), whereas all of the other clients listed above set this
flag to 1. Although the spec is vague - it says non-zero is "true" - I would
suggest setting this flag to 1 to maximize compatibility:
void guac_vnc_set_pixel_format(rfbClient* client, int color_depth) {
client->format.trueColour = 1;
> VNC connection fails if true color flag is set to 255
> -----------------------------------------------------
>
> Key: GUACAMOLE-262
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-262
> Project: Guacamole
> Issue Type: Improvement
> Components: VNC
> Reporter: Daryl Borth
> Assignee: Michael Jumper
> Priority: Minor
>
> I was having trouble getting Guacamole to connect to ESX 6.5's VNC server.
> The issue is reported here - https://github.com/LibVNC/libvncserver/issues/141
> Using TightVNC, TigerVNC, UltraVNC, and Chicken of the VNC the connection
> worked fine - only Guacamole failed. After some Wireshark sleuthing I found
> that libvncserver's client by default sets the trueColour flag to TRUE (which
> is -1 which is 255), whereas all of the other clients listed above set this
> flag to 1. Although the spec is vague - it says non-zero is "true" - I would
> suggest setting this flag to 1 to maximize compatibility:
> {code:none}
> void guac_vnc_set_pixel_format(rfbClient* client, int color_depth) {
> client->format.trueColour = 1;
> {code}
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