COMP 310 Fall 2012	Lec31: ChatApp Interfaces...

For reference, be sure to keep in mind the design principles we discussed last time.

Considerations for today:

• To one person, in terms of RMI, what is another person (user) that the first person can send a message (data packet) to?
• What is a chat room anyway?   
• What does it mean to send a message to everyone in a chat room?
• Connection Use Case:   What happens when we first attempt to connect to another computer?
  • What must be true about the target computer before it is connected to?
  • What must be known about the Registry on the target computer?
  • What if the target computer has not connected to anyone else yet?
  • How does this change our initial connection use case? 
• What sorts of data packet types does everyone need to know about?   (One possible answer is much smaller than you think!)

A "comp310f12" package will be made available as soon as possible.

Weekend advice:  

1. Copy the latest comp310f12.rmiChat interfaces over to your own rmiChat package and build your code off of that.  
2. Add/modify methods, interfaces as you think are necessary to make the chat system work.   Remember that any changes will have to be eventually applied to everyone in the class!
3. Post change and modification ideas to discussion board and send out e-mail telling everyone to please look at your suggestions.
4. Discuss on Monday and agreed upon changes will be committed to the  comp310f12.rmiChat package.
5. The above process may need to be repeated.
6. In the end, simply change the import statements from your rmiChat package to the  comp310f12.rmiChat package.

© 2012 by Stephen Wong