CLIENT-SELECTABLE ROUTING USING DNS REQUESTS

摘要

This disclosure provides for passing policies in a DNS record (e.g., NAPTR record) that allows a client to make decisions, such as on network paths, servers to request content from, and/or protocols to use. In some embodiments, the client makes the decisions at the application level. And in some embodiments, the client is another server in a CDN.

主权项

1. A method for dynamically responding to domain name system (DNS) requests, the method comprising:
receiving a domain name system (DNS) request, wherein:
the DNS request is received either directly or indirectly from an end-user system; andthe DNS request is to identify an IP address of a server to provide a content object identified by a uniform resource locator (URL); identifying a first IP address; identifying a second IP address; returning a DNS response to the end-user system, wherein:
the DNS response comprises two resource records, an Address record and a Naming Authority Pointer record;the Address record includes the first IP address;the Naming Authority Pointer record includes the second IP address;the end-user system determines whether to use the first IP address or the second IP address to request the content object.