| 摘要 |
The Specific service instances are requested by a client via a client application. The request is received by a Domain Name System (DNS). The request is resolved by the DNS by determining from information recorded in a DNS system memory and conveyed in the request, a first type T1 of service and a first list L1 of service instances associated with the first type T1. The DNS then searches for a linked structure in a TXT resource record for the first type T1. The linked structure identifies another list L2 of service instances associated with a subtype T2 of service. Then iteratively, for i=2, . . . , N+1, N being the subtypes of service associated with the first type T1 of service, searching a TXT resource record for a linked structure identifying a corresponding subtype Ti of service and identifying a list Li+1 of service instances associated with the subtype Ti+1. |
