CVS update: JGroups/doc/design RELAY.txt

  User: belaban 
  Date: 10/11/09 10:40:39

  Modified:    doc/design RELAY.txt
  Log:
  ns
  
  Revision  Changes    Path
  1.5       +24 -10    JGroups/doc/design/RELAY.txt
  
  Index: RELAY.txt
  ===================================================================
  RCS file: /cvsroot/javagroups/JGroups/doc/design/RELAY.txt,v
  retrieving revision 1.4
  retrieving revision 1.5
  diff -u -r1.4 -r1.5
  --- RELAY.txt	9 Nov 2010 09:18:56 -0000	1.4
  +++ RELAY.txt	9 Nov 2010 10:40:39 -0000	1.5
  @@ -3,7 +3,7 @@
   ========================================
   
   Author: Bela Ban
  -Version: $Id: RELAY.txt,v 1.4 2010/11/09 09:18:56 belaban Exp $
  +Version: $Id: RELAY.txt,v 1.5 2010/11/09 10:40:39 belaban Exp $
   
   This is an enhanced version of DataCenterReplication.txt with the ability to send unicast messages and to provide views
   to the application, which list members of all local clusters.
  @@ -92,14 +92,28 @@
   Implementation
   --------------
   
  -RELAY.up():
  -
  -
  -
  -RELAY.down():
  -
  -
  -
  -Receive message from TCP channel:
  +RELAY.up(msg):
  +- If not coord or RelayHeader is present: break
  +- If multicast message:
  +  - Create new message M.dst=null, src=msg.src // no headers
  +  - Wrap M and put it on the TCP channel
  +- Else: // unicast
  +  - If hdr == RelayHeader.FORWARD:
  +    - Wrap msg and put it on the TCP channel
  +
  +
  +RELAY.down(msg):
  +- If msg is a multicast: pass down, break
  +- If msg.dest is not a ProxyUUID: pass down, break
  +- Create new message M.dst=msg.dst, M.src=self
  +- Add RelayHeader.FORWARD to M
  +- Send M to the current relay (coordinator)
  +
  +
  +Receive message M from TCP channel:
  +- If sender = self: discard
  +- Set M.src=ProxyUUID(self,M.src)
  +- Add a RelayHeader to M
  +- Put M on the local channel
   
   
  
  
  

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