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- DPSLOTS.EXE
- ------------
-
- Sample application to demonstrate how to build a client/server
- application using DirectPlay.
-
- Note: MSVC may include older versions of the DirectX header files and
- libraries. This sample requires DirectX 5. In order to avoid compile
- errors, make sure the path to the DirectX 5 header files and libraries are
- listed BEFORE the MSVC header files and libraries through the
- Tools -> Options -> Directories menu.
-
- CLIENT/SERVER
- -------------
-
- DPSLOTS is really two applications in one. When you host a session, it acts
- as a server. The server maintains a simple database of account balances for
- every user that is allowed to log in. Clients can request their current
- balance from the server and can request that the server spin the wheels and
- calculate the amount won or lost.
-
- The server uses a simple text file to record the balance for each user. Each
- line of the text file contains the user account ID and a 8-character balance
- figure separated by a comma, as in:
-
- Account1, 1000
- Account2, 500
-
- You will have to manually add lines to this file for each user.
-
- When you join a session, DPSLOTS acts as a client and sends messages to the
- server for all operations. After requesting a spin from the server, it
- animates the tumblers and displays the results. The client may be required
- to log the user into the server using a name and password.
-
- SECURITY
- --------
-
- DPSLOTS can be hosted using security by clicking the "Require Secure Login"
- checkbox after choosing to host. By leaving the "Security Provider" editbox
- blank the default NTLM security package will be used. If you have an
- alternate SSPI security package installed, it may be specified here.
-
- Once this is done, the server will host a secure session and clients will
- have to securely log in with a user name and a password before being
- allowed access to the server. All messages between the client and server
- will be digitally signed and encrypted.
-
- When hosting a secure server, the account ID for each user will be defined
- by the security package being used. This account ID must be stored in the
- database file along with the appropriate balance.
-
- The default security package is NTLM, which uses a domain and a user name
- for the account ID. For example, if your domain is "GAMES" and you have two
- users "Bob" and "Jane", your database file would look like:
-
- GAMES/Bob, 1000
- GAMES/Jane, 500
-
- Currently you can only host a secure session using NTLM on Windows NT
- workstation or server. However, you can log into the server from Windows 95
- or Windows NT.
-