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Alibaba Cloud DNS:iOS SDK update history

Last Updated:Aug 15, 2025

This document describes the update history of the Public DNS iOS SDK.

SDK information

SDK name

pdns-sdk-ios

Developer

Alibaba Cloud Computing Co., Ltd.

SDK version

2.1.9

SDK update time

2024-04-09

SDK size

5.2MB

SDK MD5 value

b9e1c3d17c6e7833415974798c86be71

Latest iOS SDK version: V2.1.9

April 2024

Operating system/Language

Version number

Release date

Update description

iOS

2.1.9

2024-04-09

April 2024

Operating system/Language

Version number

Release date

Update description

iOS

2.1.8

2024-04-01

  • Added the feature to maintain cache for specified domains.

  • Optimized SDK initialization parameters.

November 2023

Operating system/Language

Version number

Release date

Update description

iOS

2.1.7

2023-11-16

  • Enhanced encryption for configuration information delivery.

  • Added hijacking data reporting feature.

October 2023

Operating system/Language

Version number

Release date

Update description

iOS

2.1.6

2023-10-24

  • Fixed issues with blacklists and whitelists feature.

July 2023

Operating system/Language

Version number

Release date

Update description

iOS

2.1.5

2023-07-21

  • Added domain name blacklists and whitelists feature.

January 2023

Operating system/Language

Version number

Release date

Update description

iOS

2.1.1

2023-01-06

  • Added resolution service optimization feature.

March 2022

Operating system/Language

Version number

Release date

Update description

iOS

2.1.0

2022-04-07

  • Addresses authentication failures caused by incorrect time settings on terminal devices.

January 2022

Operating system/Language

Version number

Release date

Update description

iOS

2.0.8

2022-01-14

  • Scheduled update of expired cache data is supported. You can enable this feature as needed.

  • Optimized some features.

September 2021

Operating system/Language

Version number

Release date

Update description

iOS

2.0.5

2021-09-16

  • Optimized Chinese domain name resolution.

  • Optimized server access in different network environments.

June 2021

Operating system/Language

Version number

Release date

Update description

iOS

2.0.3

2021-06-30

  • Optimized the latency reporting logic.

  • Optimized the information statistics feature.

  • Fixed issues in exception handling.

June 2021

Operating system/Language

Version number

Release date

Update description

iOS

2.0.2

2021-06-01

  • The features that are used when the network connection is unavailable are optimized.

May 2021

Operating system/Language

Version number

Release date

Update description

iOS

2.0.1

2021-05-25

  • The issue in which the DNS resolution results in the cache are deleted when an application is started in the background is fixed.

  • A new DNS resolution method is provided. If you use this method, the IP address type that is supported by the network environment of mobile terminals can be automatically detected, and the specified domain name is resolved to the IP addresses of the type that is supported by the network environment. The following types of IP addresses are supported: IPv4 addresses, IPv6 addresses, and IPv4/IPv6 dual-stack.

  • Optimized some features.

April 2021

Operating system/Language

Version number

Release date

Update description

iOS

2.0.0

2021-04-15

  • Added user authentication feature.

  • Added information statistics collection feature.

  • Optimized some features.

March 2021

Operating system/Language

Version number

Release date

Update description

iOS

1.1.8

2021-03-04

  • Added latency reporting feature to improve the accuracy of IP selection.

  • Optimized some features.

January 2021

Operating system/Language

Version number

Release date

Update description

iOS

1.1.7

2021-01-20

  • Added feature to store cache separately for different networks.

  • Added feature to set maximum TTL time.

  • Optimized some features.

January 2021

Operating system/Language

Version number

Release date

Update description

iOS

1.1.6

2021-01-08

  • Added setting for maximum TTL value of negative cache.

  • Added socket connection speed test feature.

  • Added support for speed test method selection.

  • Exception processing is supported.

November 2020

Operating system/Language

Version number

Release date

Update description

iOS

1.1.1

2020-11-27

  • The callback time of the pre-parsing method is optimized.

  • The process that is used to resolve detection failures for IP addresses is modified.

iOS

1.1.0

2020-11-20

  • Added caching feature.

  • Added support for negative caching.

  • Added IP selection feature.

  • Optimized internal SDK logic.

August 2020

Operating system/Language

Version number

Release date

Update description

iOS

1.0.0

2020-08-28

  • The SDK is released for the first time to implement domain name resolution.

  • DNS requests are directly sent to the public DNS server of Alibaba Cloud, bypassing local DNS servers of the Internet service provider (ISP). This prevents domain name hijacking and inaccurate scheduling caused by local DNS servers.