RetryPolicy Class Reference


                    
                    
                    defaultRetryLimit

The default retry limit for retry policies.

Declaration

Swift

public static let defaultRetryLimit: UInt


                    
                    
                    defaultExponentialBackoffBase

The default exponential backoff base for retry policies (must be a minimum of 2).

Declaration

Swift

public static let defaultExponentialBackoffBase: UInt


                    
                    
                    defaultExponentialBackoffScale

The default exponential backoff scale for retry policies.

Declaration

Swift

public static let defaultExponentialBackoffScale: Double


                    
                    
                    defaultRetryableHTTPMethods

The default HTTP methods to retry. See RFC 2616 - Section 9.1.2 for more information.

Declaration

Swift

public static let defaultRetryableHTTPMethods: Set<HTTPMethod>


                    
                    
                    defaultRetryableHTTPStatusCodes

The default HTTP status codes to retry. See RFC 2616 - Section 10 for more information.

Declaration

Swift

public static let defaultRetryableHTTPStatusCodes: Set<Int>


                    
                    
                    defaultRetryableURLErrorCodes

The default URL error codes to retry.

Declaration

Swift

public static let defaultRetryableURLErrorCodes: Set<URLError.Code>


                    
                    
                    retryLimit

The total number of times the request is allowed to be retried.

Declaration

Swift

public let retryLimit: UInt


                    
                    
                    exponentialBackoffBase

The base of the exponential backoff policy (should always be greater than or equal to 2).

Declaration

Swift

public let exponentialBackoffBase: UInt


                    
                    
                    exponentialBackoffScale

The scale of the exponential backoff.

Declaration

Swift

public let exponentialBackoffScale: Double


                    
                    
                    retryableHTTPMethods

The HTTP methods that are allowed to be retried.

Declaration

Swift

public let retryableHTTPMethods: Set<HTTPMethod>


                    
                    
                    retryableHTTPStatusCodes

The HTTP status codes that are automatically retried by the policy.

Declaration

Swift

public let retryableHTTPStatusCodes: Set<Int>


                    
                    
                    retryableURLErrorCodes

The URL error codes that are automatically retried by the policy.

Declaration

Swift

public let retryableURLErrorCodes: Set<URLError.Code>


                    
                    
                    init(retryLimit:exponentialBackoffBase:exponentialBackoffScale:retryableHTTPMethods:retryableHTTPStatusCodes:retryableURLErrorCodes:)

Creates a RetryPolicy from the specified parameters.

Declaration

Swift

public init(retryLimit: UInt = RetryPolicy.defaultRetryLimit,
            exponentialBackoffBase: UInt = RetryPolicy.defaultExponentialBackoffBase,
            exponentialBackoffScale: Double = RetryPolicy.defaultExponentialBackoffScale,
            retryableHTTPMethods: Set<HTTPMethod> = RetryPolicy.defaultRetryableHTTPMethods,
            retryableHTTPStatusCodes: Set<Int> = RetryPolicy.defaultRetryableHTTPStatusCodes,
            retryableURLErrorCodes: Set<URLError.Code> = RetryPolicy.defaultRetryableURLErrorCodes)

Parameters

`retryLimit`	The total number of times the request is allowed to be retried. `2` by default.
`exponentialBackoffBase`	The base of the exponential backoff policy. `2` by default.
`exponentialBackoffScale`	The scale of the exponential backoff. `0.5` by default.
`retryableHTTPMethods`	The HTTP methods that are allowed to be retried. `RetryPolicy.defaultRetryableHTTPMethods` by default.
`retryableHTTPStatusCodes`	The HTTP status codes that are automatically retried by the policy. `RetryPolicy.defaultRetryableHTTPStatusCodes` by default.
`retryableURLErrorCodes`	The URL error codes that are automatically retried by the policy. `RetryPolicy.defaultRetryableURLErrorCodes` by default.


                    
                    
                    retry(_:for:dueTo:completion:)

Declaration

Swift

open func retry(_ request: Request,
                for session: Session,
                dueTo error: Error,
                completion: @escaping (RetryResult) -> Void)


                    
                    
                    shouldRetry(request:dueTo:)

Determines whether or not to retry the provided Request.

Declaration

Swift

open func shouldRetry(request: Request, dueTo error: Error) -> Bool

Parameters

`request`	`Request` that failed due to the provided `Error`.
`error`	`Error` encountered while executing the `Request`.

Return Value

Bool determining whether or not to retry the Request.