Retry-After header for Hyper. Implemented according to RFC7231-7.1.3.
For more in-depth examples, please see the examples directory.
```rust extern crate chrono; extern crate retry_after;
use chrono::{Duration, UTC}; use retry_after::RetryAfter;
fn main() { // Create a RetryAfter::Delay header let retryafterdelay = RetryAfter::Delay(Duration::seconds(300));
// Create a RetryAfter::DateTime header
let retry_after_dt = RetryAfter::DateTime(UTC::now() + Duration::seconds(300));
} ```