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| | | /// A retry policy that retries requests using an exponential backoff for allowed HTTP methods and HTTP status codes |
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| | | /// as well as certain types of networking errors. |
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| | | open class RetryPolicy: RequestInterceptor { |
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| | | open class RetryPolicy: @unchecked Sendable, RequestInterceptor { |
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| | | /// The default retry limit for retry policies. |
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| | | public static let defaultRetryLimit: UInt = 2 |
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| | | |
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| | | open func retry(_ request: Request, |
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| | | for session: Session, |
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| | | dueTo error: Error, |
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| | | dueTo error: any Error, |
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| | | completion: @escaping (RetryResult) -> Void) { |
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| | | if request.retryCount < retryLimit, shouldRetry(request: request, dueTo: error) { |
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| | | completion(.retryWithDelay(pow(Double(exponentialBackoffBase), Double(request.retryCount)) * exponentialBackoffScale)) |
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| | | /// - error: `Error` encountered while executing the `Request`. |
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| | | /// |
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| | | /// - Returns: `Bool` determining whether or not to retry the `Request`. |
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| | | open func shouldRetry(request: Request, dueTo error: Error) -> Bool { |
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| | | open func shouldRetry(request: Request, dueTo error: any Error) -> Bool { |
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| | | guard let httpMethod = request.request?.method, retryableHTTPMethods.contains(httpMethod) else { return false } |
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| | | |
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| | | if let statusCode = request.response?.statusCode, retryableHTTPStatusCodes.contains(statusCode) { |
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| | | /// A retry policy that automatically retries idempotent requests for network connection lost errors. For more |
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| | | /// information about retrying network connection lost errors, please refer to Apple's |
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| | | /// [technical document](https://developer.apple.com/library/content/qa/qa1941/_index.html). |
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| | | open class ConnectionLostRetryPolicy: RetryPolicy { |
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| | | open class ConnectionLostRetryPolicy: RetryPolicy, @unchecked Sendable { |
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| | | /// Creates a `ConnectionLostRetryPolicy` instance from the specified parameters. |
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| | | /// |
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| | | /// - Parameters: |
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