关于提交至App Store的应用需支持IPv6-only网络的技术疑问

Hey Jordan, let's break down your questions clearly since you already have a grasp on IPv4 vs IPv6 differences:

What does "all apps submitted to App Store must support IPv6-only networks" mean? #

Apple runs its app review environment on an IPv6-only network. This means your app has to fully function—load data, connect to APIs, fetch resources, etc.—without relying on any IPv4-only services or infrastructure. In short, every network request your app makes must work seamlessly in a pure IPv6 environment.

Does this relate to HTTP/HTTPS addresses? #

Yes and no, let's clarify:

• HTTP and HTTPS are application-layer protocols, while IPv4/IPv6 are network-layer protocols—they operate at different levels. So the protocol (HTTP vs HTTPS) itself isn't the core issue here.
• The problem arises if your app uses hardcoded IPv4 addresses for APIs or resources. In an IPv6-only network, those addresses can't be resolved or reached.
• If you use domain names (e.g., api.yourdomain.com) with either HTTP or HTTPS, things will work fine as long as your domain has an AAAA record (the IPv6 equivalent of an A record for IPv4) configured, and your server supports IPv6 connections.
• Note: Apple strongly encourages HTTPS regardless of IPv6 requirements, so sticking with HTTPS is still a best practice.

Do I need to modify my API URL? #

It depends on how your API is currently configured:

• If you're using domain names: No URL changes are needed—just make sure your domain has an AAAA record set up, and your server is configured to accept IPv6 connections. Most cloud providers and domain registrars make this straightforward to enable.
• If you're using hardcoded IPv4 addresses: Yes, you absolutely need to adjust this. Your options are:
  • Switch to using a domain name (preferred, as it's more flexible for future network changes)
  • Replace the IPv4 address with the corresponding IPv6 address of your server
• Additionally, double-check your network request libraries: Most modern libraries (like URLSession on iOS, Alamofire, AFNetworking) already support IPv6 out of the box, so you won't need to modify code unless you've built custom network logic that explicitly relies on IPv4.

内容的提问来源于stack exchange，提问作者Jordan