Question

我开发了一个使用kerberos进行身份验证的企业iOS应用程序。我对每个请求都有一个timeoutInterval = 30。如果用户输入密码并在请求超时之前通过密码验证，则身份验证和URL请求可以正常工作。如果用户在超时后（iOS提示用户后30秒）输入密码，则CFNetwork会在下次该应用程序调用Web服务时崩溃应用程序，如下所示。

我不确定导致问题的原因。

Date/Time:       2017-01-24T03:16:42Z
Launch Time:     2017-01-24T03:16:03Z
OS Version:      iPhone OS 10.0.2 (14A456)
Report Version:  104

Exception Type:  SIGSEGV
Exception Codes: SEGV_ACCERR at 0x68
Crashed Thread:  4

Thread 0:
0   libsystem_kernel.dylib               0x0000000189d8816c mach_msg_trap + 8
1   CoreFoundation                       0x000000018ad85cec __CFRunLoopServiceMachPort + 188
2   CoreFoundation                       0x000000018ad83908 __CFRunLoopRun + 1128
3   CoreFoundation                       0x000000018acb2048 CFRunLoopRunSpecific + 440
4   GraphicsServices                     0x000000018c735198 GSEventRunModal + 176
5   UIKit                                0x0000000190c85628 -[UIApplication _run] + 680
6   UIKit                                0x0000000190c80360 UIApplicationMain + 204
7   SampleiOSApp                   0x00000001000301bc main (AppDelegate.swift:15)
8   libdyld.dylib                        0x0000000189c945b8 start + 0

Thread 1:
0   libsystem_kernel.dylib               0x0000000189da6a88 __workq_kernreturn + 8
1   libsystem_pthread.dylib              0x0000000189e68db4 start_wqthread + 0

Thread 2:
0   libsystem_kernel.dylib               0x0000000189da6a88 __workq_kernreturn + 8
1   libsystem_pthread.dylib              0x0000000189e68db4 start_wqthread + 0

Thread 3:
0   libsystem_kernel.dylib               0x0000000189d8816c mach_msg_trap + 8
1   CoreFoundation                       0x000000018ad85cec __CFRunLoopServiceMachPort + 188
2   CoreFoundation                       0x000000018ad83908 __CFRunLoopRun + 1128
3   CoreFoundation                       0x000000018acb2048 CFRunLoopRunSpecific + 440
4   Foundation                           0x000000018b7c0b1c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 300
5   Foundation                           0x000000018b7e160c -[NSRunLoop(NSRunLoop) runUntilDate:] + 92
6   UIKit                                0x00000001915fac7c -[UIEventFetcher threadMain] + 132
7   Foundation                           0x000000018b8be50c __NSThread__start__ + 1020
8   libsystem_pthread.dylib              0x0000000189e6b860 _pthread_body + 236
9   libsystem_pthread.dylib              0x0000000189e6b770 _pthread_start + 280
10  libsystem_pthread.dylib              0x0000000189e68dbc thread_start + 0

Thread 4 Crashed:
0   CFNetwork                            0x000000018b51ae60 std::__1::__hash_const_iterator<std::__1::__hash_node<std::__1::__hash_value_type<AuthenticationState::AuthInfoType, std::__1::unique_ptr<AuthenticationInfo, std::__1::default_delete<AuthenticationInfo> > >, void*>*> std::__1::__hash_table<std::__1::__hash_value_type<AuthenticationState::AuthInfoType, std::__1::unique_ptr<AuthenticationInfo, std::__1::default_delete<AuthenticationInfo> > >, std::__1::__unordered_map_hasher<AuthenticationState::AuthInfoType, std::__1::__hash_value_type<AuthenticationState::AuthInfoType, std::__1::unique_ptr<AuthenticationInfo, std::__1::default_delete<AuthenticationInfo> > >, AuthenticationState::AuthInfoTypeHasher, true>, std::__1::__unordered_map_equal<AuthenticationState::AuthInfoType, std::__1::__hash_value_type<AuthenticationState::AuthInfoType, std::__1::unique_ptr<AuthenticationInfo, std::__1::default_delete<AuthenticationInfo> > >, std::__1::equal_to<AuthenticationState::AuthInfoType>, true>, std::__1::allocator<std::__1::__hash_value_type<AuthenticationState::AuthInfoType, std::__1::unique_ptr<AuthenticationInfo, std::__1::default_delete<AuthenticationInfo> > > > >::find<AuthenticationState::AuthInfoType>(AuthenticationState::AuthInfoType const&) const + 0
1   CFNetwork                            0x000000018b516b90 AuthenticationState::updateState(HTTPResponseMessage*, _CFURLAuthChallenge*, _CFURLCredential const*, __SecTrust*) + 148
2   CFNetwork                            0x000000018b4f8724 HTTPProtocol::_protocolInterface_useCredential(_CFURLCredential const*, _CFURLAuthChallenge*) + 880
3   CFNetwork                            0x000000018b4f7008 ___ZN12HTTPProtocol19askAccountsForCredsEh_block_invoke_2 + 240
4   libdispatch.dylib                    0x0000000189c611c0 _dispatch_client_callout + 12
5   libdispatch.dylib                    0x0000000189c6cb24 _dispatch_block_invoke_direct + 372
6   CFNetwork                            0x000000018b5f2e98 RunloopBlockContext::_invoke_block(void const*, void*) + 32
7   CoreFoundation                       0x000000018acb19a8 CFArrayApplyFunction + 64
8   CFNetwork                            0x000000018b5f2d7c RunloopBlockContext::perform() + 132
9   CFNetwork                            0x000000018b5f40a4 MultiplexerSource::perform() + 308
10  CFNetwork                            0x000000018b5f3e10 MultiplexerSource::_perform(void*) + 60
11  CoreFoundation                       0x000000018ad86278 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 20
12  CoreFoundation                       0x000000018ad85bc0 __CFRunLoopDoSources0 + 520
13  CoreFoundation                       0x000000018ad837c0 __CFRunLoopRun + 800
14  CoreFoundation                       0x000000018acb2048 CFRunLoopRunSpecific + 440
15  CFNetwork                            0x000000018b49fcec +[NSURLConnection(Loader) _resourceLoadLoop:] + 332
16  Foundation                           0x000000018b8be50c __NSThread__start__ + 1020
17  libsystem_pthread.dylib              0x0000000189e6b860 _pthread_body + 236
18  libsystem_pthread.dylib              0x0000000189e6b770 _pthread_start + 280
19  libsystem_pthread.dylib              0x0000000189e68dbc thread_start + 0

我的请求代码如下：

let manager = Alamofire.SessionManager.default
manager.retrier = RetryingManager()
let request: Alamofire.Request = manager.request(httpRequest as! URLRequestConvertible)
    .validate(statusCode: 200..<300)
    .validate(contentType: ["application/json"])
    .responseObject(queue: queue, completionHandler: {
        (response: DataResponse<T>) in

        if let JSON = response.result.value {
            DispatchQueue.main.async {
                debugPrint("JSON: \(JSON)")
                // callback with the data
                completion(JSON, nil)
            }
        } else if let resultError = response.result.error {
            let errorMessage = WebServerErrorHelper.createErrorMessage(resultError: resultError, statusCode: response.response?.statusCode, serverData: response.data)
            DispatchQueue.main.async {
                completion(nil, errorMessage)
            }
        }
    })

此处queue是并发DispatchQueue，timeInterval设置为30 httpRequest。我不知道如何解决问题。提前谢谢。

Answer 1

这是CFNetwork中的一个错误，已在iOS 10.3.3

中修复

如果URLRequest超时，则CFNetwork会崩溃应用程序，然后用户通过Kerberos

1 个答案: