最近我将我的代码库从.net core 1.0迁移到了2.0。之后，我偶尔会收到错误"当使用System.Net.Http.HttpClient时，服务器返回无效或不被识别的响应错误"。在100次请求中，我有2次遇到了这个错误。
由于此错误发生的随机性，该如何进行调试呢？
program.cs
public class Program
{
public static void Main(string[] args)
{
var config = new ConfigurationBuilder()
.AddJsonFile(Path.Combine(Directory.GetCurrentDirectory(),"hosting.json"), optional: false)
.Build();
var useHttps = false;
bool.TryParse(config !=null ? config["useHttps"] : "false", out useHttps);
IWebHost host = null;
if (useHttps)
{
var fileInfo = new FileInfo(config["certName"]);
X509Certificate2 cert = new X509Certificate2(fileInfo.FullName, config["certPwd"]);
host = new WebHostBuilder()
.UseContentRoot(Directory.GetCurrentDirectory())
.UseStartup<Startup>()
.UseKestrel(options =>
{
options.Listen(IPAddress.Loopback, 5000);
options.Listen(IPAddress.Any, 4430, listenOptions =>
{
listenOptions.UseHttps(cert);
});
})
.UseIISIntegration()
.Build();
}
else
{
host = new WebHostBuilder()
.UseStartup<Startup>()
.UseKestrel()
.UseContentRoot(Directory.GetCurrentDirectory())
.UseIISIntegration()
.UseUrls(config["url"])
.Build();
}
host.Run();
}
}
HTTP network file
public class NetworkExtensions
{
public static IConfiguration Configuration { get; set; }
public static ILogger Log { get; set; }
/// <summary>
/// Flurl to get api
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="requestDto"></param>
/// <param name="rateLimit">This param is used to Perform OKTA api Retry </param>
/// <returns></returns>
public static async Task<T> Get<T>(OktaRequestDto requestDto, OKTARateLimit rateLimit = null)
{
using (MiniProfiler.Current.Step("Okta : Get"))
{
// OKTA code execution starts here.
string url = requestDto.BaseUrl
.AppendPathSegment(requestDto.ApiName + requestDto.Query);
// Handle all querystring append.
if (requestDto.QueryStrings != null && requestDto.QueryStrings.Count > 0)
{
foreach (var querystring in requestDto.QueryStrings.Keys)
{
//FLURL is encoding the value, To ensure the value is passed correct, added true param to stop default behavior
url = url.SetQueryParam(querystring, requestDto.QueryStrings[querystring], true);
}
}
var response = await url.WithHeader("Authorization", requestDto.ApiKey).GetJsonAsync<T>();
Log.Information("response => " + JsonConvert.SerializeObject(response));
return response;
catch (FlurlHttpException ex)
{
// there is an OKTA exception, return the default value, The exception is captured in the FLURLConfig
OneLoginException ole = new OneLoginException(ex, requestDto);
throw ole;
}
catch (Exception ex)
{
throw ex;
}
}
}
}
{"ClassName":"Flurl.Http.FlurlHttpException","Message":"在发送请求时发生了错误，GET https://xxx-yyy.oktapreview.com/api/v1/users/00ue1x6pgimMy2Zuf0h7 失败。","Data":{},"InnerException":{"ClassName":"System.Net.Http.HttpRequestException","Message":"在发送请求时发生了错误。","Data":{},"InnerException":{"ClassName":"System.Net.Http.WinHttpException","Message":"服务器返回了无效或未识别的响应","Data":{},"InnerException":null,"HelpURL":null,"StackTraceString":" at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Threading.Tasks.RendezvousAwaitable1.GetResult()\r\n at System.Net.Http.WinHttpHandler.<StartRequest>d__105.MoveNext()","RemoteStackTraceString":null,"RemoteStackIndex":0,"ExceptionMethod":null,"HResult":-2147012744,"Source":"System.Private.CoreLib","WatsonBuckets":null,"NativeErrorCode":12152},"HelpURL":null,"StackTraceString":" at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1.ConfiguredTaskAwaiter.GetResult()\r\n at System.Net.Http.DiagnosticsHandler.d__2.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()\r\n at System.Net.Http.HttpClient.d__58.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Flurl.Http.FlurlRequest.d__19.MoveNext()","RemoteStackTraceString":null,"RemoteStackIndex":0,"ExceptionMethod":null,"HResult":-2147012744,"Source":"System.Private.CoreLib","WatsonBuckets":null},"HelpURL":null}