URLProtocol

2019-11-09 14:05:10

字體：大中小

來源：轉載

供稿：網友

NSURLPRotocol主要用于處理特定協議的數據加載。它本身是一個抽象類，通過繼承它我們可以自定義任何網絡協議來返回給app數據，還可以攔截非法請求。

Symbols

1 Creating Protocol Objects

// 初始化public init(request: URLRequest, cachedResponse: CachedURLResponse?, client: URLProtocolClient?)

2 Registering and Unregistering Protocol Classes

// 注冊實現的子類open class func registerClass(_ protocolClass: Swift.AnyClass) -> Bool// 移除注冊的實現子類open class func unregisterClass(_ protocolClass: Swift.AnyClass)

3 Determining If a Subclass Can Handle a Request

// 是否攔截該請求，并處理open class func canInit(with request: URLRequest) -> Bool

4 Getting and Setting Request Properties

// 通過屬性key獲取值open class func property(forKey key: String, in request: URLRequest) -> Any?// 動態添加屬性可以和對應的值 open class func setProperty(_ value: Any, forKey key: String, in request: NSMutableURLRequest)// 移除屬性key和對應的值open class func removeProperty(forKey key: String, in request: NSMutableURLRequest)

5 Providing a Canonical Version of a Request

// 將攔截的請求轉換為另一個請求處理open class func canonicalRequest(for request: URLRequest) -> URLRequest

6 Determining If Requests Are Cache Equivalent

// 驗證兩個請求是否使用同樣的緩存open class func requestIsCacheEquivalent(_ a: URLRequest, to b: URLRequest) -> Bool

7 Starting and Stopping Downloads

// 開始加載數據open func startLoading()// 加載數據結束open func stopLoading()

8 Getting Protocol Attributes

// 數據加載器open var client: URLProtocolClient? { get }// 發出的請求open var request: URLRequest { get }// 緩存數據@NSCopying open var cachedResponse: CachedURLResponse? { get }