如何在Swift 3中使用带Proxy的URLSession

对于API请求，我正尝试使用代理设置URLSession。 出于testing目的，我使用公共代理服务器和响应IP的API。

func makeRequestViaUrlSessionProxy(_ url: String, completion: @escaping (_ result: String?) -> ()) { let request = URLRequest(url: URL(string: url)!) let config = URLSessionConfiguration.default config.requestCachePolicy = URLRequest.CachePolicy.reloadIgnoringLocalCacheData config.connectionProxyDictionary = [AnyHashable: Any]() config.connectionProxyDictionary?[kCFNetworkProxiesHTTPEnable as String] = 1 config.connectionProxyDictionary?[kCFNetworkProxiesHTTPProxy as String] = "142.54.173.19" config.connectionProxyDictionary?[kCFNetworkProxiesHTTPPort as String] = 8888 let session = URLSession.init(configuration: config, delegate: nil, delegateQueue: OperationQueue.current) let task = session.dataTask(with: request) { (data: Data?, response: URLResponse?, error: Error?) in if error != nil { NSLog("Client-side error in request to \(url): \(error)") completion(nil) return } if data == nil { NSLog("Data from request to \(url) is nil") completion(nil) return } let httpResponse = response as? HTTPURLResponse if httpResponse?.statusCode != 200 { NSLog("Server-side error in request to \(url): \(httpResponse)") completion(nil) return } let encodingName = response?.textEncodingName != nil ? response?.textEncodingName : "utf-8" let encoding = CFStringConvertEncodingToNSStringEncoding(CFStringConvertIANACharSetNameToEncoding(encodingName as CFString!)) let stringData = String(data: data!, encoding: String.Encoding(rawValue: UInt(encoding))) session.invalidateAndCancel() completion(stringData) } task.resume() } 

调用人：

 override func viewDidLoad() { super.viewDidLoad() makeRequestViaUrlSessionProxy("https://api.ipify.org?format=json") { string in print(string) } } 

似乎config完全被忽略，因为即使使用Proxy IP，响应的IP始终是实际的设备IP

任何帮助，高度赞赏。

编辑：如用户hasan83build议，采取“的HTTPS键”似乎不是一个选项。

Answer 1

我认为工作（应该被弃用）键是：

 kCFStreamPropertyHTTPSProxyHost kCFStreamPropertyHTTPSProxyPort 

你可以试试这个代码？

 func makeRequestViaUrlSessionProxy(_ url: String, completion: @escaping (_ result: String?) -> ()) { let request = URLRequest(url: URL(string: url)!) let config = URLSessionConfiguration.default config.requestCachePolicy = URLRequest.CachePolicy.reloadIgnoringLocalCacheData config.connectionProxyDictionary = [AnyHashable: Any]() config.connectionProxyDictionary?[kCFNetworkProxiesHTTPEnable as String] = 1 config.connectionProxyDictionary?[kCFNetworkProxiesHTTPProxy as String] = "142.54.173.19" config.connectionProxyDictionary?[kCFNetworkProxiesHTTPPort as String] = 8888 config.connectionProxyDictionary?[kCFStreamPropertyHTTPSProxyHost as String] = "142.54.173.19" config.connectionProxyDictionary?[kCFStreamPropertyHTTPSProxyPort as String] = 8888 let session = URLSession.init(configuration: config, delegate: nil, delegateQueue: OperationQueue.current) let task = session.dataTask(with: request) { (data: Data?, response: URLResponse?, error: Error?) in if error != nil { NSLog("Client-side error in request to \(url): \(error)") completion(nil) return } if data == nil { NSLog("Data from request to \(url) is nil") completion(nil) return } let httpResponse = response as? HTTPURLResponse if httpResponse?.statusCode != 200 { NSLog("Server-side error in request to \(url): \(httpResponse)") completion(nil) return } let encodingName = response?.textEncodingName != nil ? response?.textEncodingName : "utf-8" let encoding = CFStringConvertEncodingToNSStringEncoding(CFStringConvertIANACharSetNameToEncoding(encodingName as CFString!)) let stringData = String(data: data!, encoding: String.Encoding(rawValue: UInt(encoding))) session.invalidateAndCancel() completion(stringData) } task.resume() } 

另外请确保您的代理服务器configuration为处理https请求。

注意：这可能会给这些键提供deprecated警告，但键仍在工作（请参阅https://forums.developer.apple.com/thread/19356#131446 ）

Answer 2

我不确定这是否有道理。 但是，这里有两个不同的密钥集：

1. HTTP
2. HTTPS

代理密钥：

 // http proxy keys kCFNetworkProxiesHTTPEnable kCFNetworkProxiesHTTPProxy kCFNetworkProxiesHTTPPort // https proxy keys kCFNetworkProxiesHTTPSEnable kCFNetworkProxiesHTTPSProxy kCFNetworkProxiesHTTPSPort