Android camera application

If you mean file transfer, you can use standard protocols such as FTP or HTTP depending on the availability of these servers or you can send it over TCP/IP using socket as long as you create the server application yourself again using socket.

If you would like to send streaming video by following the standards, you will need to implement SIP/RTP/RTCP protocols or use ready made ones like below.

http://code.google.com/p/csipsimple/[^]
http://www.linphone.org/[^]

Before asking the question do you have done some basic search in Google[^]?

Here some quick tutorials:
Android Uploading Camera Image, Video to Server with Progress Bar[^]
Take a Photo from Android Camera and Upload it to Server | Code Pool[^]

When you say server what do you mean, windows, linux, OpenVMS ?

It also depends on what the server is running, if FTP is enabled that would be one choice. Perhaps Apache is running so you could use PHP or Perl and upload the file. I'm going to recommend bluetooth file transfer

Without knowing what the server is and has any/all recommendation are a waste of time.

/Darren