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GiopIn distributed computing, GIOP (General Inter-ORB Protocol) is the abstract protocol by which ORBs communicate. IIOP (Internet Inter-Orb Protocol) is the implementation of GIOP for TCP/IP. The OMG defines three parts of GIOP: - the Common Data Representation (CDR) - transfer syntax mapping OMG IDL data types into a low-level representation for on-the-wire transfer between ORBs and Inter-ORB bridges.
- message formats - messages are exchanged between agents to facilitate object requests, locate object implementations, and manage communication channels. Messages are:
- Request
- Reply
- CancelRequest
- LocateRequest
- LocateReply
- CloseConnection
- MessageError
- message-transport assumptions
- connection orientated
- reliable
- can be viewed as a byte stream
- provides some reasonable notification of disorderly connection loss
- model for initiating connections can be mapped onto the general connection model of TCP/IP.
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