why throw Unhandled Exception????

[juedi998]

Hi, i deploying in the project with chrome-dev-tools-runtime; in execute the Test project, that throw Unhandled Exception: System.Net.Http.HttpRequestException: An error occurred while sending the request. can u tell me so why? My development environment is vs 2017 community + windows 10 Professional + .net Core 2.1 .

Exception info:

Unhandled Exception: System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.Http.WinHttpException: 无法与服务器建立连接
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1.ConfiguredTaskAwaiter.GetResult() at System.Net.Http.WinHttpHandler.<StartRequest>d__105.MoveNext() --- End of inner exception stack trace --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1.ConfiguredTaskAwaiter.GetResult()
at System.Net.Http.HttpClient.d__58.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1.ConfiguredTaskAwaiter.GetResult() at System.Net.Http.HttpClient.<GetContentAsync>d__321.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at ChromeDevToolsRuntimeCLI.Program.<GetSessions>d__1.MoveNext() in C:\Users\tyb\Desktop\chrome-dev-tools-runtime-master\ChromeDevToolsCLI\Program.cs:line 82 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult()
at ChromeDevToolsRuntimeCLI.Program.

d__0.MoveNext() in C:\Users\tyb\Desktop\chrome-dev-tools-runtime-master\ChromeDevToolsCLI\Program.cs:line 24
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at ChromeDevToolsRuntimeCLI.Program.(String[] args)

[Oceanswave]

Before running the example CLI app , ensure that you've started a Chrome instance that enables remote debugging on port 9223,

C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --remote-debugging-port=9223