Question

我有一个利用Grapevine在Program课程内启动服务器的解决方案。但是出于某种原因，只要我启动程序，它就会在调用server.Start()时崩溃。此时解决方案的其他任何部分都没有运行，所以我不知道这是怎么回事？

在Windows 10上以管理员身份在Visual Studio 15中运行。

Program.cs

using System;
using System.Threading;
using Grapevine.Server;
using QuantConnect.Logging;

namespace QuantConnect.Services
{
    class Program
    {
        /// <summary>
        /// QuantConnect C# Services Server:
        /// </summary>
        static void Main(string[] args)
        {
            var server = new RESTServer
            {
                //Host = Configuration.Config.Get("grapevine-host"),
                //Port = Configuration.Config.Get("grapevine-port")
                Host = Configuration.Config.Get("grapevine-host", "localhost"),
                Port = Configuration.Config.Get("grapevine-port", "80")
            };

            Log.Trace(string.Format("Starting Server On {0}:{1}", server.Host, server.Port));
            server.Start(); // Exception occurs here

            while (server.IsListening)
            {
                Thread.Sleep(300);
            }

            Log.Trace("Server stopped. Press key to continue...");
            Console.ReadLine();
        }
    }
}

错误和堆栈跟踪：

An unhandled exception of type 'System.Net.HttpListenerException' occurred in Grapevine.dll

System.Net.HttpListenerException was unhandled
  ErrorCode=32
  HResult=-2147467259
  Message=The process cannot access the file because it is being used by another process
  NativeErrorCode=32
  Source=System
  StackTrace:
       at System.Net.HttpListener.AddAllPrefixes()
       at System.Net.HttpListener.Start()
       at Grapevine.Server.RESTServer.Start()
       at QuantConnect.Services.Program.Main(String[] args) in C:\Users\RichardsPC\Source\Repos\Lean\Services\Program.cs:line 29
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException:

Answer 1

所以我弄清楚问题是什么。我将Grapevine设置为使用端口80。

Port = Configuration.Config.Get("grapevine-port", "80")

问题是我的机器上有另一个使用此端口的服务，我将其更改为使用8080，现在工作正常。

Port = Configuration.Config.Get("grapevine-port", "8080")

Grapevine 3.1 - '进程无法访问文件'

1 个答案: