使用LXD REST API，ClientWebSocket在.Net Core上引发“ AuthenticationException”，但在.Net Framework上，它运行良好

时间：2019-02-09 08:30:58

标签： c# .net websocket lxd

我正在将LXD.NET移植到.Net Standard 2.0。通过HTTPS的REST API可与.Net Core和.Net Framework很好地配合。
但是使用WebSocket API（例如1.0/containers/<name>/exec），ClientWebSocket仅在.Net Core上引发身份验证异常。 （在.Net Framework上，它不会抛出并且运行良好。）

LXD在Ubuntu 18.04上运行。我在两个客户端中进行了测试，一个在Windows 10上运行，另一个在Linux上运行（运行LXD的同一个Linux计算机）。

所有源代码均为Here（https://github.com/GnicoJP/lxd-dotnet-websocket-test）。

复制步骤（服务器端）

LXD设置

$ sudo apt install lxc lxd  
$ sudo lxd init

我将LXD配置为可通过网络使用。 

$ sudo lxc launch images:alpine/3.8 &lt;container_name&gt;

我发布了一张图片。

SSL密钥/证书生成

$ openssl genrsa 2048 > client.key  
$ openssl req -new -key client.key > client.csr  
$ openssl x509 -days 3650 -req -signkey client.key < client.csr > client.crt  
$ openssl pkcs12 -export -in client.crt -inkey client.key -out client.p12

将client.p12带到客户端PC。

我注册了SSL证书

$ sudo lxc config trust add client.key

源代码

入口点为Here。我正在调用exec API。（wait-for-websocket为true）
解析Exec API的结果为Here。我认为WebSocket的URI没错。
打开ClientWebSocket为Here。在.Net Framework上，WebSocket可以与/不具有证书一起很好地工作。

抛出异常

System.AggregateException
HResult=0x80131500
Message=One or more errors occurred. (Unable to connect to the remote server)
Source=System.Private.CoreLib
Stack Trace:
    at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken) in Task.cs:line 2840
    at System.Threading.Tasks.Task.Wait() in Task.cs:line 2706
    at lxd_dotnet_websocket_test.Program.Main(String[] args) in lxd-dotnet-websocket-test\Program.cs:line 20

Inner Exception 1:
System.Net.WebSockets.WebSocketException: Unable to connect to the remote server
HResult=-2147467259
Stack Trace:
    at System.Net.WebSockets.WebSocketHandle.ConnectAsyncCore(Uri uri, CancellationToken cancellationToken, ClientWebSocketOptions options)
    at System.Net.WebSockets.ClientWebSocket.ConnectAsyncCore(Uri uri, CancellationToken cancellationToken)
    at LXD.ClientWebSocketExtensions.CreateAndConnectAsync(String url, API API) in .\libs\LXD\Util\ClientWebSocketExtensions.cs:line 19
    at LXD.Domain.Container.ContainerExecResult.ContainerExecResultWithWebSockets.TestCreate(API API, ContainerExec exec, JToken response, String operationUrl) in .\libs\LXD\Domain\Container.cs:line 228

Inner Exception 2:
System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception.
HResult=-2146233087
Stack Trace:
    at System.Net.Http.ConnectHelper.EstablishSslConnectionAsyncCore(Stream stream, SslClientAuthenticationOptions sslOptions, CancellationToken cancellationToken)
    at System.Threading.Tasks.ValueTask`1.get_Result()
    at System.Net.Http.HttpConnectionPool.CreateConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    at System.Threading.Tasks.ValueTask`1.get_Result()
    at System.Net.Http.HttpConnectionPool.WaitForCreatedConnectionAsync(ValueTask`1 creationTask)
    at System.Threading.Tasks.ValueTask`1.get_Result()
    at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken)
    at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    at System.Net.WebSockets.WebSocketHandle.ConnectAsyncCore(Uri uri, CancellationToken cancellationToken, ClientWebSocketOptions options)

Inner Exception 3:
AuthenticationException: The remote certificate is invalid according to the validation procedure.
HResult=-2146233087
Stack Trace:
    at System.Net.Security.SslState.StartSendAuthResetSignal(ProtocolToken message, AsyncProtocolRequest asyncRequest, ExceptionDispatchInfo exception)
    at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
    at System.Net.Security.SslState.PartialFrameCallback(AsyncProtocolRequest asyncRequest)
--- End of stack trace from previous location where exception was thrown ---
    at System.Net.Security.SslState.ThrowIfExceptional()
    at System.Net.Security.SslState.InternalEndProcessAuthentication(LazyAsyncResult lazyResult)
    at System.Net.Security.SslState.EndProcessAuthentication(IAsyncResult result)
    at System.Net.Security.SslStream.EndAuthenticateAsClient(IAsyncResult asyncResult)
    at System.Net.Security.SslStream.<>c.<AuthenticateAsClientAsync>b__47_1(IAsyncResult iar)
    at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
    at System.Net.Http.ConnectHelper.EstablishSslConnectionAsyncCore(Stream stream, SslClientAuthenticationOptions sslOptions, CancellationToken cancellationToken)

我在StackOverflow中是乞be。如果我的问题或英语不好，请告诉我。

1 个答案:

答案 0 :(得分：0)

.Net Framework不会检查WebSocket中使用的证书是否受信任， 但是.Net Core确实如此。我无法从Exception中获取解决方法，因此我调查了by using PerfView。

如何解决

我安装了LXD的服务器证书。 将server.crt文件（/var/lxd/server.crt）移至客户端PC，然后以受信任的根证书身份进行安装。
请阅读安装方法：Windows，Linux

相关问题
最新问题