Basic HTML version of Foils prepared October 3 1999

Foil 15 More on Sharing in Tango

From Tango 1.4 Done with Pictures CEWES(ERDC) Tango Traing -- Sept 16-17 1999. by Geoffrey C. Fox
1 Tango can share any client or server application whose state can be determined and set. Tango finds the state from the master and transmits it to the slave clients
  • For efficiency, Tango usually transmits "the change in state" and not state itself -- for spring it is as easy to transmit absolute state x as change dx in state. For chat, change in state (latest text typed) is natural.
  • For server applications, one finds and sets state through web interface which can be URL (perhaps with CGI extension) or even CORBA interface to a distributed object.
2 Porting an application to Tango, requires sending messages from master with state (change) and receiving them on slave. Hardest perhaps is knowing what the state is!
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