1. HTTP (Hypertext Transfer Protocol)

  1. HTTP Headers

  1. Retry-After
    1. Writing responses (origin servers)
    2. Reading responses (user agents)
    3. Overview table
    4. Syntax

Retry-After

In the case of certain errors, this header specifies a length of time after which the client can re-try the request.

Writing responses (origin servers)

If the server enforces request limits, specify the soonest time after which the client using those credentials will be able to make a successful request.

This header should be used with the 429 (Too Many Requests) status code.

Reading responses (user agents)

The header implies that the same request may be successful if retried later; wait at least the specified number of seconds before trying this.

Overview table

Name
Retry-After
Description
Specifies a time to wait before re-trying a request.
Direction
Response
Specification
RFC 7231: HTTP/1.1 Semantics and Content ยง7.1.3. Retry-After

Syntax

Retry-After = HTTP-date / delay-seconds