CCITCP2 Search Order

If both the Server Name and Machine Name (see Application Configuration for a definition of these terms) are specified by the client application, the CCITCP2 process returns the machine and port address of the service specified to the client so that it can establish a connection with the named service. If the service is not found, an error is returned.

However, if the Server Name is specified but the Machine Name is not, the CCITCP2 process searches all the registered Server Names in the reachable network in the following order until either the named service is found or an error is returned:

1. The CCITCP2 process returns the address and port of any occurrence of the Server Name that is registered with it and is running on the same machine as the CCITCP2 process.
2. The CCITCP2 process returns the address and port of any occurrence of the named service that is registered with it but is running on another machine.
3. The CCITCP2 process returns the address and port of the first occurrence of the named service that is registered with any other addressable CCITCP2 process. Note that there is no guarantee which particular service this will be.
4. The CCITCP2 process returns an error to the calling program if the named service still cannot be found. At this point the client will probably keep re-trying for a fixed amount of time, in case the service has been started after the client first began searching for it.

You can avoid the potential problem of producing an undesired connection from the third level search by closely observing the rules followed at the first two search levels or by using a unique name for each server process on the network.