NSNetServiceBrowser 在 iOS 14 上没有搜索错误 -72008 [英] NSNetServiceBrowser did not search with error -72008 on iOS 14

问题描述

设置多点连接(使用 Bonjour)也会触发相同的错误.我用于启动 Bonjour 浏览和 Multipeer Connectivity 的代码是从 Apple 示例代码修改而来的，并且在 iOS 13 下运行良好.

The same error is also triggered setting up Multipeer Connectivity (which uses Bonjour). The code I was using for initiating Bonjour browsing and Multipeer Connectivity was modified from the Apple sample code and worked fine under iOS 13.

推荐答案

您需要在 Info.plist 中添加以下键:NSLocalNetworkUsageDescription 和 NSBonjourServices.例如

You need to add the following keys to the Info.plist: NSLocalNetworkUsageDescription and NSBonjourServices. E.g.

<key>NSLocalNetworkUsageDescription</key>
<string>Reason for using Bonjour that the user can understand</string>
<key>NSBonjourServices</key>
<array>
    <string>_my-service._tcp</string>
    <string>_my-service._udp</string>
</array>

确保为您的服务名称正确命名了 my-service.例如.如果您正在为 foobar" 服务设置 MPC，您可能有

Ensure that my-service is correctly named for your service name. E.g. if your are setting up MPC for a "foobar" service, you might have

mpcAdvertiserAssistant = MCAdvertiserAssistant(serviceType: "foobar", discoveryInfo: discoveryInfoDict, session: mpcSession)

所以你会使用

<string>_foobar._tcp</string>
<string>_foobar._udp</string>

(您的实现中可能不需要 TCP 和 UDP.)

(You might not require both TCP and UDP in your implementation.)

参见 https://developer.apple.com/videos/play/wwdc2020/10110/

和https://developer.apple.com/forums/thread/653316

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