Method and system for supporting multi-domain-name record query based on pseudo resource record OPT extension

A technology of resource records and domain names, applied in transmission systems, electrical components, etc., can solve the problems of increased server burden and increased query delay, and achieve the effect of reducing round-trip delay

Inactive Publication Date: 2017-06-27
CHINA INTERNET NETWORK INFORMATION CENTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the current technical protocol design, the DNS client needs to send DNS query requests to the DNS server one by one, resulting in increased query delay and increased server burden

Method used

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  • Method and system for supporting multi-domain-name record query based on pseudo resource record OPT extension
  • Method and system for supporting multi-domain-name record query based on pseudo resource record OPT extension
  • Method and system for supporting multi-domain-name record query based on pseudo resource record OPT extension

Examples

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Embodiment 1

[0073] Multi-record DNS query The client initiates multiple types of record queries of the domain name, such as querying the A and AAAA records of exmaple.com and the MX record of mail.example.com.

[0074] The multi-record DNS query client puts the query information of the main domain name into the question part of the DNS packet; puts the multi-type record query information including the sub-domain name or the main domain name in sequence according to the data format of the OPT record extended to support multi-domain name type record query After entering the OPT record, put it into the additional part of the DNS package.

[0075] The specific DNS query packet information is as follows: Figure 5 As shown, the multi-record DNS query server performs the following operations after receiving the DNS packet:

[0076] a) Extract the primary domain name information, first query the primary domain name, and then put the information obtained from the query into the DNS package accor...

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Abstract

The invention provides a method and a system for supporting multi-domain-name record query based on extension of a pseudo resource record OPT. The method comprises the following steps of step 101.initiating multi-type record query of a domain name; step 103.carrying out extension on the pseudo resource record OPT and packaging into a DNS data packet; step 105.receiving the DNS data packet, extracting corresponding information and carrying out query; and step 107.returning a query result. According to the method and the system, the multi-type record query of the same domain name can be carried out; the information query of any type of records of sub-domains of a main domain can be carried out; multiple journey queries are changed to single query, so that the round trip time of DNS query is reduced; and the method and the system has important significance for various usage occasions, such as DKIM and DMARC.

Description

technical field [0001] The present application relates to multi-domain name record query, and in particular to a method and system for supporting multi-domain name record query based on pseudo resource record OPT extension. Background technique [0002] According to the current DNS query technical protocol, DNS query requests such as A and AAAA records need to be sent to the DNS server one by one by the DNS client. But with the popularity of new applications, DNS clients often need to obtain both A and AAAA records, or A and MX records. According to the current technical protocol design, the DNS client needs to send DNS query requests to the DNS server one by one, resulting in increased query delay and increased server burden. Contents of the invention [0003] In order to reduce the query time delay and the query burden of the DNS server when querying multiple DNS-type records of the same name or sub-name, the present invention proposes that after the DNS protocol is ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12
CPCH04L61/4511
Inventor 李晓东姚健康孔宁
Owner CHINA INTERNET NETWORK INFORMATION CENTER
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