Java Remote desktop Controller

[raeesaa]

Hi. This is Raeesaa. I am an MCS sudent and doing a project called Remote Desktop Controller in java. In this, a server machine accesses a remote client machine and performs different events on client machine. I know the basics of core and advanced java. I would like to know what technologies should I use in order to access the contents of remote machine. Thank you.

[Norm]

How are the client and server connected? What protocol(s) can they use to communicate?

server machine accesses a remote client machine and performs different events on client machine.

Normally its done the other way. The client asks the server to do things.

[raeesaa]

yeah normally client asks server to do things. But in this project server machine will control or I can say access the contents of client machine. When the connection is established between server and client, the screenshots of client will be sent on server machine continuously and whatever mouse or key events server will perform on this screenshot should be instantly reflected on client machine. It should appear as if server is accessing client machine remotely. What classes should I use to do so other than Robot class?
Thanks for replying. :)

[Norm]

How are the server and client connected? For example via the internet and IP addresses
What protocol will they use to communicate? For example: HTTP or FTP

[raeesaa]

they are connected via internet.. I l b using socket programming to establish the connection..
And protocol HTTP..

[Norm]

You could use Socket and ServerSocket classes and other classes in the java.net package. Also the Apache project has packages that could be useful.

[Norm]

Is this the same project: Need help in developing remote desktop controller - Java Help - CODECALL

[raeesaa]

Ya, it is the same project. I m aware of Socket and ServerSocket. I'm facing problems in sending the right mouse coordinates to the client machine.

[Norm]

What is the problem? Can you explain in more detail? Aren't mouse coordinates just pairs of numbers: X & Y?

[raeesaa]

yeah mouse coordinates are pair of numbers : x and y but the screen resolutions of client desktop and server desktop may differ. Wont that affect the events to be performed on client machine? The events may not be synchronized.

[DarrylBurke]

the screen resolutions of client desktop and server desktop may differ.

Then you need to apply a scaling transform.

db

[Norm]

Yes different screen sizes will be a problem.

[raeesaa]

Then you need to apply a scaling transform.

Thanks for your reply. What logic should I use for transformation? Sorry, I am not understanding how to do it.

[raeesaa]

Yes different screen sizes will be a problem.

Yeah. What can I do to synchronize events?

[DarrylBurke]

Thanks for your reply. What logic should I use for transformation? Sorry, I am not understanding how to do it.

How would you do it without a computer? Take a sheet of paper and draw two rectangles of different sizes. Make a dot in one of the rectangles. How would you calculate the position of a dot in the other rectangle that corresponded, proportionally, to the position of the first dot?

db

[raeesaa]

Thank you! I'll try to do it.