Domain name access method and device

Abstract

The present invention provides a domain name access method and device. The method comprises: receiving a first message sent by a DNS server, wherein the first message includes a domain name resolutionrecord and remaining time TTL of the domain name resolution record in the DNS server, wherein the domain name resolution record includes a first IP address and a second IP address of the domain nameto be accessed, the TTL includes N preset durations, and N is a positive integer greater than 1; determining a target IP address of the nth preset duration in the first IP address and the second IP address, and accessing a corresponding server in the nth preset duration according to the target IP address, wherein 1<=n<=N. Therefore, the method ensures that a terminal device can access the server corresponding to the best IP address throughout the entire TTL validity period.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a domain name access method and device. Background technique [0002] The resolution delay of domain name system (domain name system, DNS) has become a non-negligible part of the entire network request. On the one hand, in a weak network environment, the network delay introduced by DNS resolution can reach hundreds of milliseconds, which greatly increases the burden of the entire service request and directly affects the user experience. On the other hand, when the domain name server is the recursive server of the operator, the frequent domain name hijacking behavior on the server side will seriously affect the resolution process of DNS to normal domain names and the access process of applications on terminal devices. [0003] In order to solve the above problems, the terminal device can use the hypertext transfer protocol (hypertext transfer protocol, HTTP) ...

AI Technical Summary

Problems solved by technology

[0004] However, on the actual Internet, the intermediate network topology and routing path between the terminal device and the server corresponding to each IP address often undergo convergence changes

For terminal devices, using the one-time network speed measurement process to determine the IP address corresponding to the minimum RTT cannot reflect the real-time network delay of all IP addresses within the entire TTL validity period

If the intermediate network is abnormal or the IP address used is attacked by the network and the server corresponding to the IP address is unreachable, since the terminal device still uses the IP address, it is easy to cause the terminal device to be unable to access the network normally.

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