6.3.7 Resolving IP addresses from host names
If you specify Host Name for Method in the definition of a Connection Destination, JP1/AO performs IP address resolution when executing the service. Be sure to specify a host name from which the operating system can resolve an IP address.
If you specify Host Name for Method when editing or creating a service template, you must also specify Host Name for Method when defining the plug-in properties. In contrast, if you specify IP Address for Method, you can specify a host name or IP address in the plug-in properties. This is because JP1/AO automatically converts the host names specified in the plug-in properties to IP addresses and assigns them to the appropriate Connection Destinations.
The following table shows the Method setting in the Connection Destination definition and destinations that can be specified in plug-in properties:
Method specified in Connection Destination |
Method of specifying destination in plug-in properties |
||
|---|---|---|---|
Host Name# |
IPv4 |
IPv6 |
|
Host Name |
Y |
N |
N |
IPv4 |
Y |
Y |
N |
IPv6 |
Y |
N |
Y |
- Legend:
Y: Can be specified. N: Cannot be specified.
- #
When you specify a host name in a plug-in property, JP1/AO uses the host name if it finds a Connection Destination that matches the host name. If there is no Connection Destination defined that matches the host name, JP1/AO converts the input information to an IP address. If this process yields an IPv4 address, JP1/AO uses the IPv4 definition. If it yields an IPv6 address, JP1/AO uses the IPv6 definition. If there is no Connection Destination defined that matches the host name or IP address specified in the plug-in property, the connection fails.
Figure 6‒4: Behavior when host names are specified in plug-in properties ![[Figure]](GRAPHICS/F0000071.GIF)