Question

我的服务器提供了几种身份验证方法：NTLM和摘要我的iOS客户端无法处理NTLM身份验证，因此我实施connection:willSendRequestForAuthenticationChallenge:委托拒绝NTLM，然后仅使用正确的凭据进行摘要身份验证质询。
到目前为止，iOS 7上的一切正常。

但是在iOS 8上，我发现了一种奇怪的行为：
connection:willSendRequestForAuthenticationChallenge:代表在大多数时间（95％）不会被呼叫!!

我收到了这个错误：

Error: Error Domain=NSPOSIXErrorDomain Code=54 "The operation couldn’t be completed. Connection reset by peer" 
UserInfo=0x16520fb0 {_kCFStreamErrorCodeKey=54, 
NSErrorPeerAddressKey=<CFData 0x16682e40 [0x2f752440]>{length = 16, capacity = 16, bytes = 0x10020d7eac12780b0000000000000000}, 
NSErrorFailingURLKey=http://SERVER_IP:SERVER_PORT/Tunnel/Message.aspx, 
NSErrorFailingURLStringKey=http://SERVER_IP:SERVER_PORT/Tunnel/Message.aspx, 
_kCFStreamErrorDomainKey=1}

只有5％的时间正确调用代理并正常工作。

下面显示了我如何将请求发送到服务器并处理身份验证质询：

- (void)postRequest
{
    NSString *IP = SERVER_IP;
    int port = SERVER_PORT;

    NSString *url = [NSString stringWithFormat:@"http://%@:%d/Tunnel/Message.aspx", IP, port];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]];
    [request setHTTPMethod:@"POST"];
    [request setValue:@"application/xml" forHTTPHeaderField:@"Content-Type"];

    NSString *xml = [NSString stringWithFormat:@"<?xml version=\"1.0\" encoding=\"UTF-8\"?><GetServerInfo></GetServerInfo>"];
    [request setHTTPBody: [xml dataUsingEncoding:NSUTF8StringEncoding]];

    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
}

- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
    NSLog(@"%@", challenge.protectionSpace);

    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodHTTPDigest])
    {
        if ([challenge previousFailureCount] == 0)
        {
            [[challenge sender] useCredential:[NSURLCredential credentialWithUser:USERNAME
                                                                         password:PASSWORD
                                                                      persistence:NSURLCredentialPersistenceNone]
                   forAuthenticationChallenge:challenge];
        }
        else
        {
            [[challenge sender] continueWithoutCredentialForAuthenticationChallenge:challenge];
        }
    }
    else
    {
        [[challenge sender] rejectProtectionSpaceAndContinueWithChallenge:challenge];
    }
}

这些代码在iOS 7上运行，willSendRequestForAuthenticationChallenge在身份验证挑战期间多次被调用，但在iOS 8上甚至没有被调用过一次！

这可能是iOS 8的错误还是自iOS 8以来发生了什么变化？

Answer 1

当我将iOS 7应用程序更新到iOS 8时，发生了这种情况。我们使用Oracle SOA作为中间件，并且它已经停止调用委托方法。以下适用于iOS8和iOS7。（使用Xcode 6.1）

  - (void) addBasicHTTPAuthenticationHeaders
    {
        NSString * wsUserName = @"userNameForWebService";
        NSString * wsPassword = @"passwordForWebService";

        NSString *authStr = [NSString stringWithFormat:@"%@:%@", wsUserName, wsPassword];
        NSData *authData = [authStr dataUsingEncoding:NSASCIIStringEncoding];
        NSString *authValue = [NSString stringWithFormat:@"Basic %@", [authData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithCarriageReturn]];
        [urlRequest setValue:authValue forHTTPHeaderField:@"Authorization"];
    }

NSURLConnectionDelegate willSendRequestForAuthenticationChallenge将不会在iOS 8上调用

1 个答案: