URLSession

extension URLSession


                    
                    
                    perform(_:validateResponse:decodingQueue:callbackQueue:configureTask:completionHandler:)

Executes a RequestConvertible request and attempts to decode the response body.

Declaration

Swift

public func perform<R: RequestConvertible>(
  _ request: R,
  validateResponse validationBlock: ((HTTPURLResponse) throws -> Bool)? = nil,
  decodingQueue: DispatchQueue = .global(qos: .userInitiated),
  callbackQueue: DispatchQueue = .main,
  configureTask: (URLSessionTask) -> Void = { _ in },
  completionHandler: @escaping (NetworkResult<R.Resource>) -> Void
)

Parameters

`request`	A HTTP request to execute.
`validateResponse`	A block that validates the received response. This block can throw a custom error or return `false` to indicate an invalid response. If it returns `false`, the request will fail with a `RequestError.unacceptableResponse` error. Default is `nil` for no validation.
`decodingQueue`	A `DispatchQueue` to decode the response body on. Default `.global(.userInitiated)`.
`callbackQueue`	A `DispatchQueue` to run `completionHandler` on. Default `.main`.
`configureTask`	A block that receives the `URLSessionTask` for the request. This block will only be called if the `RequestType` is successfully converted to a `URLRequest`. You do not need to call `resume()` on the provided task. The default implementation does nothing.
`completionHandler`	A block executed when the request completes and the response body has been decoded.