Module retry 

Classification of upstream HTTP responses and transport failures.

Outbound clients all need the same decision: was this failure worth retrying, and if so, after how long? classify_http_status answers that from the status code and response headers alone, so it stays a pure function that is easy to test and free of any particular HTTP client.

Structs

RetryHeaderOptions

Options for reading retry delays from response headers.

Enums

RetryClass

How a caller should react to a failed upstream request.

Functions

classify_http_status

Classifies an upstream HTTP response by status and headers.

classify_http_status_with_options

Classifies an upstream HTTP response with configurable retry header parsing.

classify_http_status_with_options_at

Classifies an upstream HTTP response using options at now.

classify_transport_error

Classifies a transport failure that never produced a response.

retry_after_from_headers

Reads the retry delay relative to the current time.

retry_after_from_headers_at

Reads the retry delay from the vendor headers first, then Retry-After.

retry_after_from_headers_with_options

Reads a retry delay relative to the current time using options.

retry_after_from_headers_with_options_at

Reads a retry delay using configurable vendor header parsing at now.