Flurl https问题- ServicePointManager.ServerCertificateValidationCallback

Question

使用"Flurl library“(在我的开发机器上)调用https端点时，我得到一个错误，所以我添加了”著名的“

ServicePointManager.ServerCertificateValidationCallback = delegate { return true; }; 

跳过证书验证。

这似乎不适用于Flurl (但适用于其他库，如"RestSharp")

这是我的代码：

public async Task<object> MyMethod()
        {

            var client = new Url(baseUrl)
                                .AppendPathSegment(_endpoint)
                                .SetQueryParam("mbxId", 7)
                                .WithBasicAuth(username, password)
                                .WithHeader("cache-control", "no-cache")
                                .WithHeader("contenttype", "application/json; charset=utf-8")
                                .WithHeader("Accept", "text/html, application/xhtml+xml, image/jxr, */*");


            return await client.GetAsync();
        }

如果在调用之前我打开了" fiddler“，并且我确认了关于证书问题的警告消息(在这种情况下，如果我没有首先打开fiddler，就不要打开)，它就会起作用。

ServicePointManager.ServerCertificateValidationCallback是否具有全局作用域？为什么flurls没有考虑到这个配置？

-更新

内部异常：

[System.Exception {Flurl.Http.FlurlHttpExceprion}] 

消息：

   {"Security Error"} Request to https://demo.xxxxx.xxxxxxxxxxxxx.com:8181/dmlm4ws/ws/sessions/sessions?mbxId=7 failed. An error occurred while sending the request.

堆栈跟踪

   in Flurl.Http.Configuration.FlurlMessageHandler.<InnerSendAsync>d__2.MoveNext() in C:\projects\flurl\src\Flurl.Http.Shared\Configuration\FlurlMessageHandler.cs:riga 59
--- Fine traccia dello stack da posizione precedente dove è stata generata l'eccezione ---
   in System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   in System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   in Flurl.Http.Configuration.FlurlMessageHandler.<SendAsync>d__1.MoveNext() in C:\projects\flurl\src\Flurl.Http.Shared\Configuration\FlurlMessageHandler.cs:riga 31
--- Fine traccia dello stack da posizione precedente dove è stata generata l'eccezione ---
   in System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   in Flurl.Http.Configuration.FlurlMessageHandler.<SendAsync>d__1.MoveNext() in C:\projects\flurl\src\Flurl.Http.Shared\Configuration\FlurlMessageHandler.cs:riga 43
--- Fine traccia dello stack da posizione precedente dove è stata generata l'eccezione ---
   in System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   in Flurl.Http.Configuration.FlurlMessageHandler.<SendAsync>d__1.MoveNext() in C:\projects\flurl\src\Flurl.Http.Shared\Configuration\FlurlMessageHandler.cs:riga 47
--- Fine traccia dello stack da posizione precedente dove è stata generata l'eccezione ---
   in System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   in System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   in System.Net.Http.HttpClient.<FinishSendAsync>d__58.MoveNext()
--- Fine traccia dello stack da posizione precedente dove è stata generata l'eccezione ---
   in System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   in System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   in Flurl.Http.FlurlClient.<SendAsync>d__28.MoveNext() in C:\projects\flurl\src\Flurl.Http.Shared\FlurlClient.cs:riga 202
--- Fine traccia dello stack da posizione precedente dove è stata generata l'eccezione ---
   in System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   in System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   in System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   in DLMN.DMLM.<PerformRequest>d__8.MoveNext() in C:\PROGETTI\Progetti\DMLM\DLMN\DLMN\DMLM.cs:riga 90
--- Fine traccia dello stack da posizione precedente dove è stata generata l'eccezione ---
   in System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   in System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   in Flurl.Http.HttpResponseMessageExtensions.<ReceiveJson>d__0`1.MoveNext() in C:\projects\flurl\src\Flurl.Http.Shared\HttpResponseMessageExtensions.cs:riga 26

Answer 1

查看此解决方案here，它通过覆盖CreateMessageHandler解决了DefaultHttpClientFactory的问题

public override HttpMessageHandler CreateMessageHandler() {
        return new HttpClientHandler {
            ServerCertificateCustomValidationCallback = (a, b, c, d) => true
        };
    }