Json 如何在iOS9上进行http基本身份验证？

我一直试图通过http基本身份验证将ios应用程序连接到restful web API，但无法连接。这是我的密码：

let URL = NSURL(string:"https://devWebsvc1.whateverYolo.local:11201/api/webcall")
let theRequest = NSMutableURLRequest(URL:URL)
let session = NSURLSession(configuration: NSURLSessionConfiguration.ephemeralSessionConfiguration())
theRequest.HTTPMethod = "POST"
theRequest.addValue("application/json", forHTTPHeaderField:"Content-Type")
theRequest.addValue("application/json", forHTTPHeaderField:"Accept")


let credential = NSURLCredential(user:"username", password:"password", persistence: NSURLCredentialPersistence.ForSession)
let protectionSpace = NSURLProtectionSpace(Host: URL?.host)!, port:11201, 'protocol': URL?.scheme, realm: nil, authenticationMethod: NSURLAuthenticationMethodHTTPBasic)
let credentialStorage = NSURLCredentialStorage.sharedCredentialStorage()
credentialStorage.setDefaultCredential(credential,forProtectionSpace:protectionSpace)
theSession.configuration.URLCredentialsStorage = credentialStorage

let task = theSession.dataTaskWithRequest(theRequest, completionHandler : {data, response, error -> Void in 
if error != nil
{print("\(error)")}})

错误消息是：-

OptionalError Domain=nsurErrorDomain Code=-1200发生SSL错误，无法与服务器建立安全连接。UserInfo={NSURlerErrorFailingUrlPeerTrustErrorKey=，NSLocalizedRecoverysSuggestion=是否仍要连接到服务器？，kCFStreamErrorDomainKey=3，kCFStreamErrorCodeKey=-9802，NSErrorPeerCertificateChainKey={type=不可变，计数=1，值= 0 : }，NSUnderlyingError=0x7fe023520170{Error Domain=kCFErrorDomainCFNetwork Code=-1200 null UserInfo={kCFStreamPropertySSLClientCertificateState=0，kCFStreamPropertySSLPeerTrust=，KCFnetworkCfstreamPropertySLRoriginalValue=-9802，kCFStreamErrorDomainKey=3，kCFStreamErrorCodeKey=-9802，KCFStreamPropertySSLpeertificates={type=不可变，count=1，value= 0 : }}}，NSLocalizedDescription=发生SSL错误，无法与服务器建立安全连接，，，NSErrorFailingURLKey=，NSErrorFailingURLStringKey=，NSErrorClientCertificateStateKey=0}

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你们知道会出现什么错误吗？非常感谢你们的帮助。顺便说一下，我正在使用xcode 7。

错误可能在这行：-

theRequest.addValue("application/json", forHTTPHeaderField:"Accept")

你应该转到这个google扩展，找到Accept字段的值是多少

铬-extension://hgmloofddffdnphfgcellkdfbfbjeloo/RestClient.html

添加您的url、用户名和密码，然后单击“提交”，发现所有标题字段都是正确的，如下图所示，同时检查内容类型的值

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您的服务器是否处理TLS 1.2安全协议？这在iOS 9中是必需的。如果这是一个问题，您可以在此处查找解决方案。