为什么我的 Xamarin iOS 中的 WebRequest 在 ipv6 环境中失败? [英] Why is my WebRequest in Xamarin iOS failing in ipv6 environment?
本文介绍了为什么我的 Xamarin iOS 中的 WebRequest 在 ipv6 环境中失败?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个非常简单的 iOS Xamarin 项目，除了:
I have a very simple iOS Xamarin project where i do nothing but:
WebRequest req = WebRequest.Create("http://109.68.230.138");
WebResponse response = req.GetResponse(); //exception
var dataStream = response.GetResponseStream();
StreamReader reader = new StreamReader(dataStream);
string responseFromServer = reader.ReadToEnd();
在第 2 行，我收到以下异常.如果有人知道这应该如何表现或如何使其运行，那就太好了.我想传递 ipv4 地址仍然是一个常见的用例.
At line 2 i get the following exception. Would be great if anyone knows how this should behave or how to get this running. I guess passing ipv4 addresses is still a commom use case.
Unhandled Exception:
System.Net.WebException: Error: ConnectFailure (Network is unreachable) ---> System.Net.Sockets.SocketException: Network is unreachable
at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x000cb] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Net.Sockets/Socket.cs:1313
at System.Net.WebConnection.Connect (System.Net.HttpWebRequest request) [0x001c2] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Net/WebConnection.cs:195
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.EndGetResponse (System.IAsyncResult asyncResult) [0x00065] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Net/HttpWebRequest.cs:1025
at System.Net.HttpWebRequest.GetResponse () [0x0000e] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Net/HttpWebRequest.cs:1037
at Test.iOS.AppDelegate.FinishedLaunching (UIKit.UIApplication application, Foundation.NSDictionary launchOptions) [0x0000d] in /Users/xxx/Projects/Test/iOS/AppDelegate.cs:26
at (wrapper managed-to-native) UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/src/UIKit/UIApplication.cs:79
at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/src/UIKit/UIApplication.cs:63
at Test.iOS.Application.Main (System.String[] args) [0x00008] in /Users/xxx/Projects/Test/iOS/Main.cs:17
2016-11-09 09:34:32.194 Test.iOS[763:313310] Unhandled managed exception:
Error: ConnectFailure (Network is unreachable) (System.Net.WebException)
at System.Net.HttpWebRequest.EndGetResponse (System.IAsyncResult asyncResult) [0x00065] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Net/HttpWebRequest.cs:1025
at System.Net.HttpWebRequest.GetResponse () [0x0000e] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Net/HttpWebRequest.cs:1037
at Test.iOS.AppDelegate.FinishedLaunching (UIKit.UIApplication application, Foundation.NSDictionary launchOptions) [0x0000d] in /Users/xxx/Projects/Test/iOS/AppDelegate.cs:26
at (wrapper managed-to-native) UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/src/UIKit/UIApplication.cs:79
at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/src/UIKit/UIApplication.cs:63
at Test.iOS.Application.Main (System.String[] args) [0x00008] in /Users/xxx/Projects/Test/iOS/Main.cs:17
--- inner exception ---
Network is unreachable (System.Net.Sockets.SocketException)
at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x000cb] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Net.Sockets/Socket.cs:1313
at System.Net.WebConnection.Connect (System.Net.HttpWebRequest request) [0x001c2] in /Users/builder/data/lanes/3859/b638977c/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Net/WebConnection.cs:195
2016-11-09 09:34:32.195 Test.iOS[763:313310] critical: Stacktrace:
2016-11-09 09:34:32.195 Test.iOS[763:313310] critical:
Native stacktrace:
2016-11-09 09:34:32.265 Test.iOS[763:313310] critical: 0 libmonosgen-2.0.dylib 0x00000001001abd0c mono_handle_native_sigsegv + 260
2016-11-09 09:34:32.266 Test.iOS[763:313310] critical: 1 libsystem_platform.dylib 0x0000000192eec348 _sigtramp + 52
2016-11-09 09:34:32.266 Test.iOS[763:313310] critical: 2 libsystem_pthread.dylib 0x0000000192ef2450 pthread_kill + 112
2016-11-09 09:34:32.266 Test.iOS[763:313310] critical: 3 libsystem_c.dylib 0x0000000192d9e3e0 abort + 140
2016-11-09 09:34:32.267 Test.iOS[763:313310] critical: 4 libxamarin-debug.dylib 0x0000000100480d90 _ZL20print_all_exceptionsP10MonoObject + 0
2016-11-09 09:34:32.267 Test.iOS[763:313310] critical: 5 libmonosgen-2.0.dylib 0x00000001001ac59c mono_invoke_unhandled_exception_hook + 100
2016-11-09 09:34:32.267 Test.iOS[763:313310] critical: 6 libmonosgen-2.0.dylib 0x00000001001ab830 mono_handle_exception_internal + 3860
2016-11-09 09:34:32.268 Test.iOS[763:313310] critical: 7 libmonosgen-2.0.dylib 0x00000001001aa910 mono_handle_exception + 40
2016-11-09 09:34:32.268 Test.iOS[763:313310] critical: 8 libmonosgen-2.0.dylib 0x00000001001a1be4 mono_arm_throw_exception + 216
2016-11-09 09:34:32.268 Test.iOS[763:313310] critical: 9 libmscorlib.dll.dylib 0x00000001007a9918 throw_exception + 168
2016-11-09 09:34:32.268 Test.iOS[763:313310] critical: 10 libSystem.dll.dylib 0x0000000100bbac44 System_Net_HttpWebRequest_EndGetResponse_System_IAsyncResult + 388
2016-11-09 09:34:32.269 Test.iOS[763:313310] critical: 11 libSystem.dll.dylib 0x0000000100bbacc0 System_Net_HttpWebRequest_GetResponse + 112
2016-11-09 09:34:32.269 Test.iOS[763:313310] critical: 12 libTest.iOS.exe.dylib 0x00000001000770b4 Test_iOS_AppDelegate_FinishedLaunching_UIKit_UIApplication_Foundation_NSDictionary + 276
2016-11-09 09:34:32.269 Test.iOS[763:313310] critical: 13 libmscorlib.dll.dylib 0x0000000100786db4 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 244
2016-11-09 09:34:32.269 Test.iOS[763:313310] critical: 14 libmonosgen-2.0.dylib 0x00000001001ba1dc mono_jit_runtime_invoke + 1772
2016-11-09 09:34:32.270 Test.iOS[763:313310] critical: 15 libmonosgen-2.0.dylib 0x000000010022ad0c do_runtime_invoke + 112
2016-11-09 09:34:32.270 Test.iOS[763:313310] critical: 16 libmonosgen-2.0.dylib 0x000000010022ac68 mono_runtime_invoke + 208
2016-11-09 09:34:32.270 Test.iOS[763:313310] critical: 17 Test.iOS 0x000000010005c62c _ZL30native_to_managed_trampoline_5P11objc_objectP13objc_selectorPP11_MonoMethodP13UIApplicationP12NSDictionaryPKcSB_SB_SB_ + 692
2016-11-09 09:34:32.270 Test.iOS[763:313310] critical: 18 Test.iOS 0x000000010005c368 -[AppDelegate application:didFinishLaunchingWithOptions:] + 96
2016-11-09 09:34:32.271 Test.iOS[763:313310] critical: 19 UIKit 0x0000000199d20100 <redacted> + 400
2016-11-09 09:34:32.271 Test.iOS[763:313310] critical: 20 UIKit 0x0000000199f30858 <redacted> + 3524
2016-11-09 09:34:32.271 Test.iOS[763:313310] critical: 21 UIKit 0x0000000199f365c8 <redacted> + 1656
2016-11-09 09:34:32.271 Test.iOS[763:313310] critical: 22 UIKit 0x0000000199f4ae60 <redacted> + 48
2016-11-09 09:34:32.272 Test.iOS[763:313310] critical: 23 UIKit 0x0000000199f335ac <redacted> + 168
2016-11-09 09:34:32.272 Test.iOS[763:313310] critical: 24 FrontBoardServices 0x0000000195a018bc <redacted> + 36
2016-11-09 09:34:32.272 Test.iOS[763:313310] critical: 25 FrontBoardServices 0x0000000195a01728 <redacted> + 176
2016-11-09 09:34:32.272 Test.iOS[763:313310] critical: 26 FrontBoardServices 0x0000000195a01ad0 <redacted> + 56
2016-11-09 09:34:32.273 Test.iOS[763:313310] critical: 27 CoreFoundation 0x0000000193e08278 <redacted> + 24
2016-11-09 09:34:32.273 Test.iOS[763:313310] critical: 28 CoreFoundation 0x0000000193e07bc0 <redacted> + 524
2016-11-09 09:34:32.273 Test.iOS[763:313310] critical: 29 CoreFoundation 0x0000000193e057c0 <redacted> + 804
2016-11-09 09:34:32.273 Test.iOS[763:313310] critical: 30 CoreFoundation 0x0000000193d34048 CFRunLoopRunSpecific + 444
2016-11-09 09:34:32.274 Test.iOS[763:313310] critical: 31 UIKit 0x0000000199d192b0 <redacted> + 608
2016-11-09 09:34:32.274 Test.iOS[763:313310] critical: 32 UIKit 0x0000000199d14034 UIApplicationMain + 208
2016-11-09 09:34:32.274 Test.iOS[763:313310] critical: 33 libXamarin.iOS.dll.dylib 0x0000000100514fb4 wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr + 324
2016-11-09 09:34:32.274 Test.iOS[763:313310] critical: 34 libXamarin.iOS.dll.dylib 0x00000001004d61ac UIKit_UIApplication_Main_string___intptr_intptr + 44
2016-11-09 09:34:32.275 Test.iOS[763:313310] critical: 35 libXamarin.iOS.dll.dylib 0x00000001004d616c UIKit_UIApplication_Main_string___string_string + 172
2016-11-09 09:34:32.275 Test.iOS[763:313310] critical: 36 libTest.iOS.exe.dylib 0x0000000100076de0 Test_iOS_Application_Main_string__ + 160
2016-11-09 09:34:32.275 Test.iOS[763:313310] critical: 37 libmscorlib.dll.dylib 0x0000000100786db4 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 244
2016-11-09 09:34:32.275 Test.iOS[763:313310] critical: 38 libmonosgen-2.0.dylib 0x00000001001ba1dc mono_jit_runtime_invoke + 1772
2016-11-09 09:34:32.276 Test.iOS[763:313310] critical: 39 libmonosgen-2.0.dylib 0x000000010022ad0c do_runtime_invoke + 112
2016-11-09 09:34:32.276 Test.iOS[763:313310] critical: 40 libmonosgen-2.0.dylib 0x000000010022d2f0 mono_runtime_exec_main + 832
2016-11-09 09:34:32.276 Test.iOS[763:313310] critical: 41 libmonosgen-2.0.dylib 0x000000010022cf0c mono_runtime_run_main + 764
2016-11-09 09:34:32.276 Test.iOS[763:313310] critical: 42 libmonosgen-2.0.dylib 0x000000010019e7f8 mono_jit_exec + 236
2016-11-09 09:34:32.277 Test.iOS[763:313310] critical: 43 libxamarin-debug.dylib 0x000000010048dcd8 xamarin_main + 2168
2016-11-09 09:34:32.277 Test.iOS[763:313310] critical: 44 Test.iOS 0x000000010005de50 main + 96
2016-11-09 09:34:32.277 Test.iOS[763:313310] critical: 45 libdyld.dylib 0x0000000192d185b8 <redacted> + 4
2016-11-09 09:34:32.277 Test.iOS[763:313310] critical:
=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
推荐答案
您不能使用 IPv4 地址文字.这是自动失败和应用程序拒绝，因为这些在仅 IPv6 的环境中不起作用.您必须改用主机名.
You can't use IPv4 address literals. That's an automatic failure and app rejection, since these don't work on an IPv6-only environment. You must use a hostname instead.
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