Ios UIWebView&x2B；Sharepoint+；NTLM Auth-I get流在打开之前正在发送事件

我一直在开发一个应用程序，其中包含一个简单的UIWebView，可以显示Sharepoint网站。我原本以为NTLM身份验证会是一个问题，但事实证明，这是非常直接的。然而，自从iOS8以后，我的应用程序在我的日志中一次又一次地发出垃圾邮件“Stream在打开之前发送事件”，以至于页面真的无法加载

我最初认为这是我正在做的事情，所以我创建了一个小应用程序（如下），以消除我的其他应用程序可能存在的任何奇怪之处，但不幸的是，我遇到了同样的问题。我想我的主要问题是我不知道从哪里开始寻找答案。互联网对此有所提及，但没有明确的解决方案，如[webView dontDoThat]：D

我正在尝试手动将连接添加到运行循环，您将在代码中看到这一点。我已经尝试了所有我知道如何创建连接的方法，但这是最近的一次尝试

我开始处理SSL挑战，因为我的证书对域无效，然后我得到NTLM挑战并发送硬编码用户名，作为测试通过。它部分加载站点，但最终放弃加载所有资源，我认为这是一个错误。欢迎你

//
//  ViewController.m
//
//  Created by Greg Frame on 10/2/14.
//

#import "ViewController.h"

#define APPURL @"https://mysharepoint.com"
#define USERNAME @"usernamehere"
#define PASSWORD @"passwordhere"

@interface ViewController ()

@end

@implementation ViewController

BOOL _Authenticated = NO;
BOOL _SSLAuthenticated = NO;
NSURLConnection *_Connection;

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.webView.delegate = self;
    NSURLRequest *requestURL = [NSURLRequest requestWithURL:[NSURL URLWithString:APPURL]];
    [self.webView loadRequest:requestURL];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark UIWebViewDelegate
-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request   navigationType:(UIWebViewNavigationType)navigationType {
    if(webView.loading){ //if url requests come through while its loading, its probably embedded content
        return YES;
    }

    BOOL result = YES;
    if (!_Authenticated || !_SSLAuthenticated) {
        //I have tried a ton of different ways to create the NSURLConnection this is the latest
        _Connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
        [_Connection scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
        [_Connection start];
        result = NO;
    }
    return result;
}

#pragma mark NSURLConnection Delegate
-(void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:    (NSURLAuthenticationChallenge *)challenge {
    if( [challenge previousFailureCount] == 0 ) {
    if ([challenge.protectionSpace.authenticationMethod     isEqualToString:NSURLAuthenticationMethodServerTrust]) {
            NSLog(@"SSL Challenge");
            NSURL* baseURL = [NSURL URLWithString:APPURL];
            if ([challenge.protectionSpace.host isEqualToString:baseURL.host]) {
                NSLog(@"trusting connection to host %@", challenge.protectionSpace.host);
                [challenge.sender useCredential:[NSURLCredential     credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
            } else
                NSLog(@"Not trusting connection to host %@", challenge.protectionSpace.host);
        } else if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodNTLM]) {
            NSLog(@"NTLM Challenge");
            _SSLAuthenticated = YES;  //cant get here otherwise


            //persistence:NSURLCredentialPersistenceForSession
            NSURLCredential *cred = [NSURLCredential credentialWithUser:USERNAME password:PASSWORD persistence:NSURLCredentialPersistencePermanent];
            [[challenge sender] useCredential:cred forAuthenticationChallenge:challenge];
        } else {
            NSLog(@"Unsupported Challenge");
            [challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge];
        }
    } else {
        NSLog(@"Failed authentication");
        [[challenge sender] cancelAuthenticationChallenge:challenge];
    }
}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)pResponse {
    NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)pResponse;
    NSLog(@"Received response %ld", (long)[httpResponse statusCode]);

    if( !_SSLAuthenticated && [httpResponse statusCode] == 200) {    
        NSLog(@"SSL GOOD");
        _SSLAuthenticated = YES;
        [_Connection cancel];
        _Connection = nil;
        NSURLRequest *requestURL = [NSURLRequest requestWithURL:[NSURL URLWithString:APPURL]];
        [self.webView loadRequest:requestURL];
        return;
    }

    if( !_Authenticated && [httpResponse statusCode] == 200) {
        NSLog(@"NTLM GOOD");
        _Authenticated = YES;
        [_Connection cancel];
        [_Connection unscheduleFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];

        NSURLRequest *requestURL = [NSURLRequest requestWithURL:[NSURL URLWithString:APPURL]];
        [self.webView loadRequest:requestURL];
        return;
    }

    NSLog(@"Connection Cancelled");
    [_Connection cancel];
}

@end

免责声明：零件和零件是从别人那里复制的，所以我并不声称每一行都是手动输入的。感谢所有拥有我在本例中输入的代码的人

感谢您的帮助！ -格雷格框架

一些日志条目：

 2014-10-06 15:12:31.110 sptest2[21405:2051411] SSL Challenge
 2014-10-06 15:12:31.110 sptest2[21405:2051411] trusting connection to host xxxxx.xxxxx.com
 2014-10-06 15:12:31.426 sptest2[21405:2051411] NTLM Challenge
 2014-10-06 15:12:31.899 sptest2[21405:2051690] Stream 0x7c8d9070 is sending an event before being opened
 2014-10-06 15:12:32.429 sptest2[21405:2051411] Received response 200
 2014-10-06 15:12:32.429 sptest2[21405:2051411] NTLM GOOD
 2014-10-06 15:12:33.184 sptest2[21405:2051723] Stream 0x7ca95210 is sending an event before being opened
 2014-10-06 15:12:34.293 sptest2[21405:2051723] Stream 0x7bed9740 is sending an event before being opened
 2014-10-06 15:12:34.465 sptest2[21405:2051723] Stream 0x7bee1120 is sending an event before being opened
 2014-10-06 15:12:34.523 sptest2[21405:2051723] Stream 0x7caba9a0 is sending an event before being opened
 2014-10-06 15:12:34.532 sptest2[21405:2051723] Stream 0x7f87e040 is sending an event before being opened
 ...

---

这里也有同样的错误。运气好吗？作为一项测试，我为每个页面加载创建了一个NSURLConnection，并开始注意到sharepoint在加载时请求几个不同文件的凭据，看起来是随机的。我认为这就是导致页面永远无法加载的原因。信息本身可能不是一个巨大的考验。一个建议是，如果您不需要支持iOS7x，那么使用WkWebView，它有委托来处理内置的NTLM auth。这在iOS8上对我很有效。不幸的是，我在格雷加特又被困了3-4个月。这里WKWebView也不起作用。请给我看一下简单的代码。