vnc-list newcomer
Greetings, I want to congratulate all contributors on a very nice project ! I run VNCserver for Linux(RH 7.1) on a local cluster that makes x3270 connections to an S390 system in Boulder. x3270 needs an X server, but I don't want to put the video hardware on the cluster.I have been using Xvfb for this purpose, and have now replaced Xvfb with VNCserver.I get the same virtual framebuffer with the added benefit that I can view the desktop when I need to for diag purposes, or for remote view/support. Some of my support folks need to see the X desktop also, which always required a trek to the server room; not any more! The W2K VNCviewer is working just fine from their desks, and remote support of this server cluster has become a breeze. Brilliant ! Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: VNC Connection Freezes / Drops
We also have noticed this same behavior between NT and W2K. I am interested in the feedback. Thanks. Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: VNC Connection Freezes / Drops
James says, "This sounds like an issue with your network." - Nope. We have reproduced this behavior between two boxes (NT W2K) that are on the same ring... that is, we aren't even making two hops; we never hit a router or bridge. In our case the machines are using token ring; however, this same behavior has been seen on ethernet. Over some time, something happens between the viewer and the server, and one or the other will hang. In our case, closing the windows and reestablishing the connection gets us going again. Time before the hang varies, but is definitely not network related. Something else is going on. I have not seen the hang on my Linux boxes. Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: VNC Connection Freezes / Drops
> Over some time, something happens between the viewer and the server, and > one or the other will hang. In our case, closing the windows and > reestablishing the connection gets us going again. Time before the hang > varies, but is definitely not network related. Something else is going > on. Closing the viewer window and reconnecting fixes the problem? Cheers, James "Wez" Weatherall --- Yes.The cursor freezes... only the dot can be moved.It is possible to move the dot up and close the viewer window and restart.Something is causing the viewer to lock, or hang, freeze... Thanks Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
RE: VNC Connection Freezes / Drops
Jason, Where do you check "poll full window" ? Thanks Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
RE: VNC Connection Freezes / Drops
James, The VNCviewer that freezes (in our case) is a Windows 2000 box. VNCserver is running on an NT box.The symptom is that the cursor (mouse) freezes on the vncviewer window, only allowing us to move the dot. We can move up and close the vncviewer window and restart the viewer and continue. The desktop on the server is not affected, and when we restart the viewer things are ok until the viewer freezes again. I have not seen the viewer hang on my Linux boxes. Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: Ghosting??
What you are looking for is "Terminal Services". Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
RE: VNC Connection Freezes / Drops
Jason says, "Double click on the VNC server icon in the system tray. Check the box that states "poll full screen". --- I checked the "poll full screen" box and am testing now.What other boxes do you have checked.I have unchecked all other polling boxes and only have the "poll full screen" checked. Thanks Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
password file
hi gang, I am trying to automate the vnc viewer attachment from my Linux box to my W2000 box with : vncviewer w2000box:0 -passwd passwordfile -fullscreen The question is how do I create the passwordfile ? Thanks Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: VNC Connection Freezes / Drops
hi James, We can reproduce this problem. This note is going to give a better description of the hang, and then will detail the steps to follow to reproduce. The problem is in the client viewer.The symtpom is that the client viewer (full screen or window) freezes. The desktop does not refresh and the host mouse is frozen. The "dot" mouse can be moved and the session can be minimized or closed.The good news is that we have not only figured out how to reproduce the problem, we know how to circumvent it also. The problem has been reproduced with the 3.3.3 viewer running on W2K and NT. It does not seem to matter what the server platform is; however, I have used both the Linux and NT platforms in my testing. Steps to reproduce the freeze: 1) start the viewer on an NT or W2K box. 2) minimize the session window to the toolbar 3) right click the toolbar icon for the session window 4) on the popup menu click 'fullscreen' 5) click the fullscreen acknowledgement 6) the session will be frozen, the mouse will be frozen, the 'dot' mouse will move now 1) minimize the session by ctrl-esc esc and right click on the toolbar session icon 1a) click minimize 2) maximize the session by left clicking the toolbar session icon The session will now be freed, the mouse will move , etc. Alternate steps to reproduce the freeze: 1) start with the session in fullscreen mode (viewer on NT or W2K) 2) minimize the session with ctrl-esc esc and right click the toolbar session icon 2a) click minimize 3) now right click the toolbar session icon and click the 'fullscreen' option returning the session to window mode 4) the session will be frozen, the mouse will be frozen, the 'dot' mouse will move now.. 1) minimize the the window with the minimize control in the upper right corner of the window 2) maximize the window by left clicking the toolbar session icon The session will now be freed, the mouse will move, etc. There appears to be other ways to accomplish this same symptom. But this should get you started so that you can see the behavior that we are describing.As you see, the session can be freed by minimizing it and maximizing it WITHOUT touching the 'fullscreen' option.In the past we were simply closing the window. Thanks much, Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 -- Forwarded by Mark Harris/Rochester/IBM on 05/29/2001 05:02 PM --- Mark Harris 05/23/2001 01:41 PM To: [EMAIL PROTECTED] cc: From: Mark Harris/Rochester/IBM@IBMUS Subject: Re: VNC Connection Freezes / Drops (Document link: Mark Harris) > Over some time, something happens between the viewer and the server, and > one or the other will hang. In our case, closing the windows and > reestablishing the connection gets us going again. Time before the hang > varies, but is definitely not network related. Something else is going > on. Closing the viewer window and reconnecting fixes the problem? Cheers, James "Wez" Weatherall --- Yes.The cursor freezes... only the dot can be moved.It is possible to move the dot up and close the viewer window and restart.Something is causing the viewer to lock, or hang, freeze... Thanks Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: VNC Connection Freezes / Drops
James says, "This is very useful to know, but not entirely trivial to fix." --- One, possibly trivial, way to fix this would be to change the behavior (or display) of the 'fullscreen' checkbox on the viewer popup menu that results from a right click on the toolbar host session icon. Here are some suggestions: 1) grey out the 'fullscreen' checkbox when the host session is actually minimized. or 2) only display the 'fullscreen' checkbox option when the host session is actually maximized. The basic problem for the user is that 'fullscreen' is confused with 'maximized'.Simplify the interface and remove the confusion; might be easier than modifying your message loop for permutations of minimized, maximized, fullscreen mode, & window mode.Just a thought. Thanks ! Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: VNC Connection Freezes
fyi
I did not see this come through the list the other day, so I thought I
would resend it. This code snippet corrects the vnc hand freeze on
the windoze viewer.
James,
One of the folks in our lab, John Fuenning, fixed this problem by adding
an additional line of code to the WndProc method of the
ClientConnections.cpp file.The following is a snippet with the
additional line marked in red and with <<=.
Apparently its just a matter of marking SetDormant(false) when the
'fullscreen' check option is selected. Play with it and let me know what
you think. I hope there isn't anything more subtle laying around under
there that makes this trickier than we think it is.
Hope this helps.
Thanks.
case WM_SYSCOMMAND:
{
switch (LOWORD(wParam)) {
case SC_MINIMIZE:
_this->SetDormant(true);
break;
case SC_RESTORE:
_this->SetDormant(false);
break;
case ID_NEWCONN:
_this->m_pApp->NewConnection();
return 0;
case ID_CONN_SAVE_AS:
_this->SaveConnection();
return 0;
case IDC_OPTIONBUTTON:
if (_this->m_opts.DoDialog(true)) {
_this->m_pendingFormatChange = true;
// This isn't always needed
_this->SizeWindow();
InvalidateRect(hwnd, NULL, TRUE);
//_this->UpdateScrollbars();
//UpdateWindow(hwnd);
// Make the window correspond to the requested
state
_this->RealiseFullScreenMode();
};
return 0;
case IDD_APP_ABOUT:
ShowAboutBox();
return 0;
case ID_CONN_ABOUT:
_this->ShowConnInfo();
return 0;
case ID_FULLSCREEN:
// Toggle full screen mode
_this->SetFullScreenMode(!_this->InFullScreenMode());
_this->SetDormant(false);
<<==
return 0;
case ID_REQUEST_REFRESH:
// Request a full-screen update
_this->SendFullFramebufferUpdateRequest();
return 0;
Mark H. Harris <><
Staff Software Engineer
Software Tools Development - IBM Rochester, MN
iSeries Dept EL8Y/664-3 E115
[EMAIL PROTECTED] (8) 456-6910 1-507-286-6910
-
To unsubscribe, send a message with the line: unsubscribe vnc-list
to [EMAIL PROTECTED]
See also: http://www.uk.research.att.com/vnc/intouch.html
-
No Subject
Where can I find the server log file for WinVNC on W2K ?I would expect that there is a log file similar to the one that is posted on the Linux platform in ~/.vnc How do I run the WinVNC server in debug mode ? Thanks Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Log File for WinVNC?
Where can I find the server log file for WinVNC on W2K ? Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: Automatically Accepting Connections
Ben said, "One part of the documentation suggested that if no password was assigned, then acceptance was automatic... thanks, but I'd rather keep that password there if it's the only security available!!!" - VNC is a great remote support tool; however, it is mostly insecure. You will want to use SSH (openSSH openSSL) as the vehicle for VNC. SSH will optionally compress as well as encrypt the transmission. Of course the SSH connection will be slower; however, it is well worth it from a security standpoint. Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
RE: Automatically Accepting Connections
Check out http://www.cygwin.com Run openSSH under cygwin ! Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
vncviewer socket error in java applet
When running the java appet (vncviewer) from my W2K box (netscape 4.7 jre 1.3) to my Linux box, I receive the following errors on the java console after a short time and netscape has to be restarted. Sometimes I do not get the errors in the console, but the socket closes and the browser has to be restarted. This can be reproduced on W2K Netscape 4.7 JRE 1.3.It does not occur on NT netscape 4.7 JRE 1.3. I does not occur on Linux (mozilla, netscape 6 JRE 1.3) Does anyone have any ideas what is happening on the W2K browser ? java.net.SocketException: Socket closed at java.net.SocketInputStream.read(Compiled Code) at java.io.BufferedInputStream.fill(Compiled Code) at java.io.BufferedInputStream.read(Compiled Code) at java.io.FilterInputStream.read(Compiled Code) at rfbProto.readServerMessageType(Compiled Code) * at vncCanvas.processNormalProtocol(Compiled Code) at vncviewer.run(Compiled Code) at java.lang.Thread.run(Compiled Code) java.net.SocketException: Socket closed Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
RE: VNC as spyware on TV
VNC is used in our shop as an Xvfb and for remote server support and maint (almost exclusively). For the masses (particularly IT managers and security folks) the primary application for VNC is going to be electronic monitoring.It doesn't really matter what emphasis you give to the web page either. Spyware aside we are also gearing up to use VNC (modified form) for net conferencing; instead of netmeeting or econference. We have used VNC for netdemos also, which is just a specialized net conference where all clients are view only.The demo conference is hosted on a Linux box that serves out an X connection in viewonly mode. A vncviewer is started on the same Linux host connecting back to the Windose box where the demo is being run. So, all clients (whatever platform) connect to the Linux box either with their browser or vncviewer and are able to see the software demo that is happening on the windose box.It is a lot of network traffic, but limiting to viewonly, restricting the colors to 8bit, and simplifying the backgrounds help with bandwidth. I have found it a more reliable conferencing solution in some situations. Some people will use VNC for spyware.(very sad) Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
Re: Xvnc screensaver
Adrian said, "I was just reminded today of something I've been struggling with regarding Xvnc - that is the screensaver pattern (the 'gray' background with the big X). Is there a way to stop this coming up?" --- The grey pattern and the large X are annoying at first to most users of an X server until they fully understand what they are dealing with. Every X desktop has three components that work together. 1) the X server ie XFree86, Xvnc, etc 2) the window manger ie Sawfish, Enlightenment, twm, fvwm2, etc 3) the desktop environment ie KDE, GNOME, Afterstep, Window Maker, etc The grey pattern and the large X is the X server. If you were to run the X command as root (Linux) or run just the Xwrapper as a normal user then the X server would start and ALL you would see is the grey pattern and the large X; the keyboard will do nothing and the mouse will do nothing except that you will be able to move the large X around the screen. This is X. Xvnc is an X server as well as the VNC server ! Some folks don't quite get this connection. That is why Xvnc can be used in place of Xvfb (virtual frame buffer) ... it can function as the systems X server even if no one makes a vnc connection to it ! The grey pattern and large X are a normal indicator of any X server by design. Mark H. Harris <>< Staff Software Engineer Software Tools Development - IBM Rochester, MN iSeries Dept EL8Y/664-3 E115 [EMAIL PROTECTED] (8) 456-6910 1-507-286-6910 - To unsubscribe, send a message with the line: unsubscribe vnc-list to [EMAIL PROTECTED] See also: http://www.uk.research.att.com/vnc/intouch.html -
