Performing DNS lookups in Session Initiation Protocol (SIP) applications on Liberty
Use the Domain Resolver API in your application to perform Domain Name System (DNS) lookups of SIP URIs using the RFC 3263 protocol. You can perform synchronous lookups to avoid having to preserve state, which is required for an asynchronous callback. Alternatively, you can perform asynchronous lookups if you need a better performing interface.
Before you begin
In your server.xml file, install and configure the
sipServlet-1.1
feature with a domainResolver
element.
For more information, see Administering Session Initiation Protocol (SIP) on Liberty.