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    Alibaba Cloud DNS:Updates of SDK for iOS

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    Alibaba Cloud DNS:Updates of SDK for iOS

    Last Updated:Dec 04, 2025

    This document describes the updates of the Public DNS iOS SDK.

    SDK information

    SDK name

    pdns-sdk-ios

    Developer

    Alibaba Cloud Computing Co., Ltd.

    SDK version

    2.2.1

    SDK update time

    2024-08-29

    SDK size

    5.2 MB

    SDK MD5 hash

    b7f090287db18f622d85209ada144ef6

    Latest iOS SDK version: V2.2.1

    August 2024

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.2.1

    2024-08-29

    • Added a setting to enable or disable fallback to the local DNS.

    April 2024

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.1.9

    2024-04-09

    April 2024

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.1.8

    2024-04-01

    • Added a feature to keep the cache for specified domain names.

    • Optimized SDK initialization parameters.

    November 2023

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.1.7

    2023-11-16

    • Encrypted the delivery of configuration information.

    • Added a feature to report hijacking data.

    October 2023

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.1.6

    2023-10-24

    • Fixed issues with the blacklists and whitelists feature.

    July 2023

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.1.5

    2023-07-21

    • Added a feature for domain name blacklists and whitelists.

    January 2023

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.1.1

    2023-01-06

    • Added a feature for resolution service optimization.

    March 2022

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.1.0

    2022-04-07

    • Fixed an authentication failure issue caused by incorrect time settings on terminal devices.

    January 2022

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.0.8

    2022-01-14

    • Added a switch to enable or disable scheduled proactive updates for expired cache.

    • Optimized some features.

    September 2021

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.0.5

    2021-09-16

    • Optimized the resolution of Chinese domain names.

    • Optimized server access in different network environments.

    June 2021

    Operating system/Language

    Version

    Release date

    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

    Release date

    Description

    iOS

    2.0.2

    2021-06-01

    • Optimized some features for offline scenarios.

    May 2021

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.0.1

    2021-05-25

    • Fixed an issue where the cache was revoked when the app moved to the background.

    • Added a resolution method that detects the IPv6 and IPv4 network environment of the terminal.

    • Optimized some features.

    April 2021

    Operating system/Language

    Version

    Release date

    Description

    iOS

    2.0.0

    2021-04-15

    • Added a user authentication feature.

    • Added an information statistics collection feature.

    • Optimized some features.

    March 2021

    Operating system/Language

    Version

    Release date

    Description

    iOS

    1.1.8

    2021-03-04

    • Added a latency reporting feature to improve the accuracy of IP address optimization.

    • Optimized some features.

    January 2021

    Operating system/Language

    Version

    Release date

    Description

    iOS

    1.1.7

    2021-01-20

    • Added a feature to store caches separately for different networks.

    • Added a feature to set the maximum TTL.

    • Optimized some features.

    January 2021

    Operating system/Language

    Version

    Release date

    Description

    iOS

    1.1.6

    2021-01-08

    • Added a setting for the maximum TTL of negative cache.

    • Added a feature to test the speed of socket connection establishment.

    • Added support for selecting a speed test method.

    • Optimized exception handling.

    November 2020

    Operating system/Language

    Version

    Release date

    Description

    iOS

    1.1.1

    2020-11-27

    • Optimized the timing of callbacks for the pre-resolution method.

    • Modified the process for handling unreachable IP probes.

    iOS

    1.1.0

    2020-11-20

    • Added a caching feature.

    • Added support for negative caching.

    • Added an IP address optimization feature.

    • Optimized the internal logic of the SDK.

    August 2020

    Operating system/Language

    Version

    Release date

    Description

    iOS

    1.0.0

    2020-08-28

    • Initial release of the SDK. Implemented the domain name resolution feature.

    • Domain name resolution requests are sent directly to Alibaba Cloud Public DNS servers. This bypasses the local DNS to prevent domain hijacking and inaccurate scheduling caused by the local DNS.