TIPC addressing 2

• Service Address

  A Service address consists of two parts, assigned by the developer
  A Service Type number – typically hard-coded
  A Service Instance number – often calculated by user in run time

The service address is always indicated by the scope indicator （scope indicator） Limited

1、 instructions calling side Search scope for 
2、node ==0 Indicates cluster Global Discovery ,node ！=0 Indicates that the lookup should only be performed on this node 
3、 Express binding side The visual range of 
4、 There are special values for node local visibility or cluster global visibility 

• Service Address Binding

  There are almost no restrictions on how to bind service addresses

  1、 Different service addresses can be bound to the same socket
  2、 The same service address can be bound to different sockets
  3、 Service address range can be bound to socket
  4、 In the message bus mode, each socket only provides one service address
  5、 This address type is also used for sending datagrams and communication group multicast

• Location Transparency（ Position transparency ）

  The client does not need to know the location of the server
  1、 The translation from service address to socket address is performed dynamically on the source node .
  2、 There is a copy of the global binding table on each node , Used to perform this conversion .
  3、 The sender can still indicate the explicit socket address in a more practical case ,.e、 for example , When only responding to incoming messages