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Domain name inquiry method and system

A domain name system and domain name query technology, applied in the field of communications, can solve problems such as reducing query efficiency and increasing message overhead, and achieve the effects of improving query efficiency, reducing screening burden, and reducing overhead

Inactive Publication Date: 2010-06-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the response message may carry multiple NAPTR resource records, the overhead of the message is increased, and the DNS client needs to traverse and filter unnecessary resource records, which reduces the query efficiency

Method used

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  • Domain name inquiry method and system
  • Domain name inquiry method and system

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Experimental program
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Embodiment Construction

[0048] The present invention will be described in detail below with reference to the drawings and embodiments.

[0049] The core idea of ​​the present invention is that when the client sends a query message, it carries service parameters, and the DNS server returns resource records matching the service parameters.

[0050] When the DNS client performs DNS NAPTR type query, due to the limitation of the problem part of the query message, the Service information cannot be carried. The present invention expands the problem domain of the query message. Figure 8 It is the structure of the problem part of the DNS message expanded by the present invention, and the query service field (QSERVICE) is added to the original problem part, which is a variable-length field. The query service field carries service parameters, and the service parameters can be interface and / or protocol information. Its definition can be consistent with "Service Parameters" in RFC3958. When the query type (QTY...

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Abstract

The invention provides a domain name inquiry method which comprises the following steps: a client sends an inquiry packet carrying service parameters to a domain name system server, and the domain name system server returns resource records which are matched with the service parameters to the client. The invention further provides a domain name inquiry system. The adoption of the method and the system can realize that the DNS server can carry out matching processing locally according to the service parameters carried in the inquiry packet, and the resource records after matching can be directly returned to the client, thereby leading the DNS client to obtain more precise NAPTR resource records, reducing the screening burden on the client, reducing the cost of the packet and improving the inquiry efficiency.

Description

technical field [0001] The invention relates to the communication field, in particular to a domain name query method and system with various network protocol service characteristics. Background technique [0002] DNS (Domain Name System) domain name system is a core basic service of the Internet. As a distributed database that can map domain names and IP addresses to each other, it can make it easier for people to access the Internet without having to remember that it can be accessed by machines. The IP number string to read directly. [0003] DNS consists of the following three parts: [0004] Namespace and resource records. The domain name space is a tree structure, such as figure 1 A structural diagram of a domain name space tree is shown. A resource record is some data associated with a name. Conceptually, each node on the domain name space tree has certain information, and the query is to obtain some specific information related to it. [0005] DNS server. The DN...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/06
Inventor 周星月朱春晖
Owner ZTE CORP
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