使用Multipeer Connectivity在两台设备之间同步定时器？

Question

I've come across a few posts that kind of address my issue, but none of them actually have the answer that I'm looking for. I'm using Multipeer Connectivity to connect between two devices, and I want to execute a block of code at the exact same time, with as little latency as possible. I've gone through sending timestamps from the host to another peer to start a timer at the same time (with the Date class), but there is always at least 0.3 to 0.5 seconds of latency. The problem is that the device times aren't synced perfectly. Is there any third-party framework or solution that would allow me to run code at the same time on both devices? One example of this is the app AmpMe, which syncs music across many devices. I'm using Swift 3, by the way.

Answer 1

我建议使用时间服务器来同步它们的时钟或计算它们的时钟之间的偏移量，然后使用这些偏移量在两个设备上的同一时刻启动你的定时器。