基础连接关闭--APIendpoint调用失败

Question

public Task<HttpResponseMessage> SendAsync(HttpRequestMessage request)
{
  client = new HttpClient();

  // removed code for setting ignoreCertErrors and environmentName

  if (ignoreCertErrors && environmentName.ToUpper() != "PROD")
            {
                ServicePointManager.ServerCertificateValidationCallback =    delegate { return true; };
            }

  return client.SendAsync(request);
}

=================================================================================================================================================================堆栈跟踪:
位于system.net.httpWebRequest.EndgetResponse（IAsyncResult asyncResult）
位于system.net.http.httpClientHandler.getResponseCallback（IAsyncResultar）

===================================================================================================================消息：无法从传输连接读取数据：现有连接被远程主机强制关闭。堆栈跟踪:
在system.net.tlsstream.endwrite（IAsyncResult asyncResult）
在system.net.connectstream.writeHeaderScallback（IAsyncResult ar）

=======================================================================================================================================================================================================

====================================================================

如何获得更多细节？我试图避免像Wireshark这样的低级工具，我希望有trace/log/capture选项，更多关于应用程序调用失败的API的细节。

更新-以下是失败时的跟踪信息：

System.NET信息:0:[2292]SecureChannel#49584532::.ctor(Hostname=xx.xx.com,ClientCertificates=0,EncryptionPolicy=RequireEncryption）

System.NET信息:0:[2292]SecureChannel#49584532-留下0个客户端证书可供选择。

使用缓存的凭据句柄的System.NET信息：0:[2292]。System.NET信息:0:[2292]InitializeSecurityContext（凭据=system.net.safefreecredential_security，context=(null)，targetName=xx.xx.com，inFlags=ReplayDetect、SequenceDetect、InitManualCredValidation，AllocateMemory，InitManualCredValidation)System.NET信息:0:[2292]InitializeSecurityContext(In-Buffer长度=0,Out-Buffer长度=178,

system.net.sockets详细:0:[2292]套接字#14347911::BeginSend（）

System.net.Sockets详细:0:[2292]退出套接字#14347911::BeginSend()->OverlappedAsyncResult#19699911 System.net.Sockets详细:0:[2292]套接字#14347911::PostCompletition中的数据

[移除]

system.net.sockets详细:0:[2292]套接字#14347911::BeginReceive（）

system.net.sockets详细:0:[2292]退出套接字#14347911::BeginReceive()->OverlappedAsyncResult#2389992

system.net.sockets详细:0:[2292]套接字#14347911::EndReceive（OverlappedAsyncResult#2389992)

system.net.sockets错误：0:[2292]套接字#14347911::EndReceive中的异常-现有连接被远程主机强制关闭。system.net.sockets详细:0:[2292]退出套接字#14347911::endreceive()->int32#0

system.net.sockets详细：0:[2292]套接字#14

Answer 1

日志条目：

System.net.Sockets错误：0:[2292]套接字#14347911::UpdateStatusAfterSocketError（）-ConnectionReset

是由防火墙阻塞端口造成的。一旦添加了新的防火墙规则，问题就解决了。