RESOLVING A HOST EXPRESSION TO AN INTERNET PROTOCOL ADDRESS

• US 20140281032A1
• Filed: 09/30/2013
• Published: 09/18/2014
• Est. Priority Date: 03/13/2013
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google Inc. (Alphabet Inc.)
• Inventors: ROSKIND, James Anthony, BENTZEL, Christopher
• Granted Patent: US 10,007,726 B2
• Time in Patent Office: Days
• US Class Current: 709/245
• CPC Class Codes: G06F 16/95 Retrieval from the web
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 61/58 Caching of addresses or names

Abstract

Systems and methods for resolving a request associated with a host expression to an Internet Protocol (IP) address are provided. In some aspects, a request for content from a content server is transmitted from a client computing device. The request is associated with a host expression of the content server. A message including the requested content and an indication of an Internet Protocol (IP) address set of a DNS resolution of the host expression of the content server is received in response to the request. The requested content includes text or an image. The IP address set of the DNS resolution of the host expression of the content server is stored in a local memory of the client computing device. The IP address set is stored for resolution of future requests associated with the host expression of the content server locally at the client computing device.

Claims

1. A computer-implemented method for receiving a domain name service (DNS) resolution for a content server, the method comprising:

transmitting, from a client computing device, a request for content from a content server, the request being associated with a host expression of the content server;

receiving, in response to the request, a message comprising the requested content and an indication of an Internet Protocol (IP) address set of a DNS resolution of the host expression of the content server, wherein the requested content comprises text or an image associated with a display for a webpage, and wherein the requested content is different from the indication of the IP address set; and

storing, in a local memory of the client computing device, the IP address set of the DNS resolution of the host expression of the content server, the IP address set being stored for resolution of future requests associated with the host expression of the content server locally at the client computing device.

2. The method of claim 1, wherein the host expression of the content server comprises a host name of the content server.

3. The method of claim 2, wherein storing, in the local memory of the client computing device, the IP address set of the DNS resolution of the host expression of the content server comprises:

storing, in one or more data structures within the web browser, the IP address set of the DNS resolution of the host expression of the content server.

4. The method of claim 3, wherein the one or more data structures are prebuilt into the web browser.

5. The method of claim 3, wherein the one or more data structures are updated during an update of the web browser.

6. The method of claim 1, further comprising:

verifying, prior to storing the IP address set of the DNS resolution of the host expression of the content server, that a top layer domain (TLD) of a sender of the received message matches the host expression of the content server.

7. The method of claim 1, wherein the message comprises a hypertext transfer protocol (HTTP) message, wherein a header of the HTTP message comprises the indication of the IP address set of the DNS resolution of the host expression of the content server, and wherein a body of the HTTP message comprises the requested content.

8. The method of claim 1, wherein the message comprises a SPDY message.

9. A non-transitory computer-readable medium for receiving a domain name service (DNS) resolution for a content server, the computer-readable medium comprising instructions which, when executed by a computer, cause the computer to implement a method, the method comprising:

transmitting, from a client computing device, a request for content from a content server, the request being associated with a host expression of the content server, the content from the content server comprising text or an image associated with a display for a webpage;

receiving, in response to the request, a message indicating an Internet Protocol (IP) address set of a DNS resolution of the host expression of the content server, the message being provided in conjunction with the requested content; and

storing, in a local memory of the client computing device, the IP address set of the DNS resolution of the host expression of the content server, the IP address set being stored for resolution of future requests associated with the host expression of the content server locally at the client computing device.

10. The computer-readable medium of claim 9, the method further comprising:

verifying that the client computing device has a secure connection with the content server, wherein storing the IP address set is in response to verifying that the client has a secure connection with the content server.

11. The computer-readable medium of claim 10, wherein the secure connection comprises one of a secure socket layer (SSL) connection, a hypertext transfer protocol secure (HTTPS) connection, or a SPDY connection.

12. The computer-readable medium of claim 9, the method further comprising:

verifying that the content server and the DNS resolution are associated with a common domain, wherein storing the IP address set is in response to verifying that the content server and the DNS resolution are associated with the common domain.

13. The computer-readable medium of claim 9, wherein the requested content comprises text or one or more images displayed in a webpage.

14. A system for providing for resolving a request associated with a host expression to an Internet Protocol (IP) address, the system comprising:

one or more processors; and

a memory comprising instructions which, when executed by the one or more processors, cause the one or more processors to implement a method, the method comprising;

storing, at a content server, a first IP address set of a domain name service (DNS) resolution of a host expression of the content server;

receiving, at the content server, a request for content of the content server, the request being generated on a client computing device, the request being associated with a DNS resolution corresponding to a second IP address, the content of the content server comprising text or an image associated with a display for a webpage;

determining that the second IP address is not in the first IP address set; and

providing, to the client computing device, in response to the request, a message indicating the first IP address set of the DNS resolution of the host expression of the content server, the message being provided for resolution of future requests associated with the host expression of the content server locally at the client computing device, the message being provided in conjunction with the requested content.

15. The system of claim 14, wherein the second IP address comprises an IP address of a default DNS lookup server, and wherein the request is routed from the client computing device to the content server in conjunction with a DNS lookup at the default DNS lookup server.

16. The system of claim 14, wherein the second IP address is not an IP address of the content server, and wherein the second IP address is not an IP address of a DNS resolver.

17. The system of claim 14, wherein the second IP address comprises an IP address for the content server stored on the client computing device.

18. The system of claim 14, wherein the message comprises a hypertext transfer protocol (HTTP) header indicating the first IP address set of the DNS resolution of the host expression of the content server.

19. The system of claim 14, wherein the message comprises a SPDY message, the SPDY message comprising the first IP address set of the DNS resolution of the host expression of the content server.

20. The system of claim 14, wherein the host expression of the content server comprises a host name of the content server.