Hi Changkun,
Could you attach the log from the VNC server? Regards, -Jeff From: Ou Changkun <ouchang...@outlook.com> Reply-To: "user@guacamole.apache.org" <user@guacamole.apache.org> Date: Wednesday, September 19, 2018 at 9:16 AM To: "user@guacamole.apache.org" <user@guacamole.apache.org> Subject: EXT: "Error handling message from VNC server" in Debian based builds Hey guys, I installed guacamole from source code on a Debian stretch based container. The browser display automatically froze after operates a little bit when I use VNC protocol. The cause is different from GUACAMOLE-620: guacd[9]: ERROR: Error handling message from VNC server. This behavior can be reproduced by the following steps: 1. Build docker image, say guacd-master, from guacamole-server master 332e187813595fc2e769f3e29c0582b7ec726ea1. 2. Use consol/ubuntu-xfce-vnc:1.3.0 create a container as VNC server. 3. Connect to the VNC container. 4. When display appears, open a file manager, drag the window and move very fast. After few seconds, the display froze and connection is observed as an exit status. I checked the source code of VNC protocol on guacamole-server side. It seems because of `HandleRFBServerMessage` failed without any useful context information, since libvncserver-dev is installed via apt-get, it seems hard to debug on the VNC side. What could be wrong here? Is there any conflict between the VNC server and guacamole VNC protocol plugin? How to properly solve this problem? Thank you in advance. Best, Changkun Complete outputs: =============== guacd[7]: INFO: Guacamole proxy daemon (guacd) version 1.0.0 started guacd[7]: DEBUG: Successfully bound socket to host 0.0.0.0, port 4822 guacd[7]: INFO: Listening on host 0.0.0.0, port 4822 guacd[7]: INFO: Creating new client for protocol "vnc" guacd[7]: INFO: Connection ID is "$3fdc295a-d82f-4f81-97fc-a483b591944e" guacd[9]: INFO: Cursor rendering: local guacd[9]: DEBUG: Parameter "swap-red-blue" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "read-only" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "color-depth" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "dest-port" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "encodings" omitted. Using default value of "zrle ultra copyrect hextile zlib corre rre raw". guacd[9]: DEBUG: Parameter "autoretry" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "reverse-connect" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "listen-timeout" omitted. Using default value of 5000. guacd[9]: DEBUG: Parameter "enable-audio" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "enable-sftp" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "sftp-hostname" omitted. Using default value of "172.16.250.11". guacd[9]: DEBUG: Parameter "sftp-host-key" omitted. Using default value of "22". guacd[9]: DEBUG: Parameter "sftp-port" omitted. Using default value of "". guacd[9]: DEBUG: Parameter "sftp-password" omitted. Using default value of "". guacd[9]: DEBUG: Parameter "sftp-passphrase" omitted. Using default value of "". guacd[9]: DEBUG: Parameter "sftp-root-directory" omitted. Using default value of "/". guacd[9]: DEBUG: Parameter "sftp-server-alive-interval" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "recording-name" omitted. Using default value of "recording". guacd[9]: DEBUG: Parameter "recording-exclude-output" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "recording-exclude-mouse" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "recording-include-keys" omitted. Using default value of 0. guacd[9]: DEBUG: Parameter "create-recording-path" omitted. Using default value of 0. guacd[9]: INFO: User "@c38445a9-288e-4ec2-b09b-64ec1b0d337c" joined connection "$3fdc295a-d82f-4f81-97fc-a483b591944e" (1 users now present) guacd[9]: ERROR: Error handling message from VNC server. guacd[9]: INFO: Internal VNC client disconnected guacd[9]: INFO: User "@c38445a9-288e-4ec2-b09b-64ec1b0d337c" disconnected (0 users remain) guacd[9]: INFO: Last user of connection "$3fdc295a-d82f-4f81-97fc-a483b591944e" disconnected guacd[9]: DEBUG: Requesting termination of client... guacd[9]: DEBUG: Client terminated successfully. guacd[7]: INFO: Connection "$3fdc295a-d82f-4f81-97fc-a483b591944e" removed.
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