#232 frequent disconnects with AdderLink server

[canavan]

We're using an AdderLink IP VGA+Keyboard<>VNC device which is rather noisy when uncalibrated and therefore continuously updates the screen. Any update at all apparently risks a disconnect, sometimes with automatic reconnect, sometimes resulting in the "Connection Terminated Unknown rectangle encoding 4692 -> exiting" dialog. The numbers vary widely.

2008-09-05 10:44:58.077 Chicken of the VNC[20652:10b] Server reports Version RFB 004.000
2008-09-05 10:44:58.397 Chicken of the VNC[20652:10b] Transport Pixelformat:
2008-09-05 10:44:58.398 Chicken of the VNC[20652:10b] trueColor = YES
2008-09-05 10:44:58.400 Chicken of the VNC[20652:10b] bigEndian = NO
2008-09-05 10:44:58.402 Chicken of the VNC[20652:10b] bitsPerPixel = 32
2008-09-05 10:44:58.403 Chicken of the VNC[20652:10b] depth = 24
2008-09-05 10:44:58.404 Chicken of the VNC[20652:10b] maxValue(r/g/b) = (255/255/255)
2008-09-05 10:44:58.404 Chicken of the VNC[20652:10b] shift(r/g/b) = (0/8/16)
rfbPixelFormat redMax = 255
rfbPixelFormat greenMax = 255
rfbPixelFormat blueMax = 255
2008-09-05 10:45:34.575 Chicken of the VNC[20652:10b] Automatically reconnecting to server. The connection was closed because: "Unknown rectangle encoding 2097184 -> exiting".
2008-09-05 10:45:34.609 Chicken of the VNC[20652:10b] Server reports Version RFB 004.000
2008-09-05 10:45:34.934 Chicken of the VNC[20652:10b] Transport Pixelformat:
2008-09-05 10:45:34.935 Chicken of the VNC[20652:10b] trueColor = YES
2008-09-05 10:45:34.936 Chicken of the VNC[20652:10b] bigEndian = NO
2008-09-05 10:45:34.937 Chicken of the VNC[20652:10b] bitsPerPixel = 32
2008-09-05 10:45:34.937 Chicken of the VNC[20652:10b] depth = 24
2008-09-05 10:45:34.938 Chicken of the VNC[20652:10b] maxValue(r/g/b) = (255/255/255)
2008-09-05 10:45:34.938 Chicken of the VNC[20652:10b] shift(r/g/b) = (0/8/16)
rfbPixelFormat redMax = 255
rfbPixelFormat greenMax = 255
rfbPixelFormat blueMax = 255

CotVNC is significantly slower than e.g. vncviewer when connected to this device, e.g. displaying an initial screen takes 5-5.

Additionally, dragging a dialog with the left mouse button repeatedly causes the following Assertion failure:

2008-09-05 10:41:59.200 Chicken of the VNC[20650:10b] *** Assertion failure in +[QueuedEvent mouseUpEventForButton:location:timestamp:], /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_aqua_cotvnc/work/cotvnc/Source/QueuedEvent.m:35
2008-09-05 10:41:59.201 Chicken of the VNC[20650:10b] Invalid parameter not satisfying: buttonNumber >= 1 && buttonNumber <= 3

vncviewer or any other vnc client does not exhibit any of the aforementioned problems.