特性 TimeProvider 

pub trait TimeProvider:
    Debug
    + Send
    + Sync {
    // Required method
    fn current_time(&self) -> Option<UnixTime>;
}

提供当前时间的对象

This is 用 到, 用于 example, 检查 if 一个 certificate has expired during certificate validation, 或 到 检查 the age of 一个 票据

必需方法

fn current_time(&self) -> Option<UnixTime>

返回当前的挂钟时间。

This is not required 到 be monotonic.

Return None if unable 到 retrieve the time.

实现者

impl TimeProvider for DefaultTimeProvider

Available on crate feature std only.