Unsigned integer values are delta-seconds and are multiplied by 1000.
RFC 1123, RFC 850, and ANSI C asctime dates are converted to the number of
milliseconds until the date. Empty, malformed, expired, negative, and
unsafe-integer results return undefined. The default reference time is
Date.now().
Parameters
headerValue: string|null
The raw Retry-After header, or null when absent.
nowMs: number = ...
The reference epoch time in milliseconds for HTTP-date values.
Returns number|undefined
A non-negative safe integer delay in milliseconds, or undefined
when the header cannot produce one.
Parses an HTTP
Retry-Afterheader into a delay.Unsigned integer values are delta-seconds and are multiplied by
1000. RFC 1123, RFC 850, and ANSI Casctimedates are converted to the number of milliseconds until the date. Empty, malformed, expired, negative, and unsafe-integer results returnundefined. The default reference time isDate.now().