Distributed Application, Using 'net Remoting,

1
Distributed Application, Using .net Remoting,
C,

• DCOM, EJB
• By Salem, Ray M.

2
Structure of .Net Remoting

• Channel
• Formatter
• messages
• Proxy
• Objects
• Soap

3
(No Transcript)
4
Roaming Objects

• Marshal Objects
• By Value or Reference
• Server Activated Objects(SAO)
• akaWell Known Objects
• Client Activated Objects(CAO)

5
Marshal By Value

• The object is stored in the client memory space.

6
Marshal Object by Value
Server
Client
Object C
7
Marshal By Reference

• Clients access the object by reference.
• A proxy is created between the server and client.
• All processing of the objects occurs on the
  server side.
• Minimizes Client resource and processing
  consumption.

8
Marshal Object by Reference
Server
Client
Object C
Proxy C
9
Server Activated Object

• Client must know the endpoint URI.
• State less objects.
• Singleton
• Single-Call

10
Singleton

• A single object is instantiated on the server.
• All clients share the common object, by
  reference.
• Clients share common data.
• Data must be synchronized, so that read/write do
  not occur simultaneously.
• The object holds a state that is shared with all
  clients.

11
Singleton
Client
Server
Proxy C
Object B
Client
Proxy C
12
Singlecall

• The object is instantiate for every method call.
• Synchronization is not a problem.

13
Single Call
Client
Server
Proxy C
Object C
Client
Proxy C
14
Client Activated Objects

• Uri is not specified, Since every instantiated
  object must have a different URI.
• CAO object, hold a state that is relative to the
  client.

15
Client activated Object
Client
Server
Proxy B
Object B
Client
Object B
Proxy B