如何确定哪些IIS Express实例正在使用端口?

时间:2015-08-25 05:31:40

标签: c# iis iis-express

我想以编程方式杀死正在占用特定端口的正在运行的IIS实例,但似乎无法确定使用特定端口的IIS实例。

netstat.exe只显示进程正在使用PID 4,但那是系统进程。 “netsh http show urlacl”根本不显示占用的端口。

IIS Express Tray程序以某种方式了解这一点。当我尝试在端口被占用时启动另一个IIS Express实例时,我收到以下错误:
“端口'40000'已被进程'IIS Express'使用(进程ID'10632')。

任何人都知道如何获取这些信息?

3 个答案:

答案 0 :(得分:2)

似乎PID是4(系统),因为实际的侦听套接字在名为http的服务下。

我查看了iisexpresstray.exe用于提供所有正在运行的IISExpress应用程序的列表。值得庆幸的是,它管理的.NET代码(全部在iisexpresstray.dll中)很容易被反编译。

它似乎至少有三种获取进程端口号的方法:

  1. 从命令行参数中读取const rp = require('request-promise'); rp('http://www.google.com').then(function (htmlString) { // Process html... }).catch(function (err) { // process error here }); (我们知道不可靠)
  2. 运行/port并解析输出
  3. 致电netsh http show servicestate view=requestq并解析网站网址
  4. 不幸的是,像Microsoft.Web.RuntimeStatusClient.GetWorkerProcess(pid)类这样的iisexpresstray.dll中的大多数有用的东西都被声明为IisExpressHelper(尽管我想象有生成包装器或复制程序集并公开所有内容的工具)

    我选择使用Microsoft.Web.dll。它出现在我的GAC中,但由于某些原因,它没有出现在可在Visual Studio中添加作为参考的程序集列表中,所以我只是将文件从我的GAC中复制出来。有了Microsoft.Web.dll,只需要使用这段代码:

    internal

    您也可以调用 using (var runtimeStatusClient = new RuntimeStatusClient()) { var workerProcess = runtimeStatusClient.GetWorkerProcess(process.Id); // Apparently an IISExpress process can run multiple sites/applications? var apps = workerProcess.RegisteredUrlsInfo.Select(r => r.Split('|')).Select(u => new { SiteName = u[0], PhysicalPath = u[1], Url = u[2] }); // If we just assume one app return new Uri(apps.FirstOrDefault().Url).Port; } 来仅检索实际的工作进程。

    我也查看了RuntimeClient.GetAllWorkerProcesses(在Microsoft.Web.dll中),发现它使用了两个COM接口,

    1. RegisteredUrlsInfoIRsca2_Core
    2. F90F62AB-EE00-4E4F-8EA6-3805B6B25CDDIRsca2_WorkerProcess
    3. 最后,我读到了一个版本的Microsoft.Web.Administration显然能够读取IISExpress应用程序信息,但信息非常稀少,我在系统上找到的那个甚至不能让我实例化{{ 1}}没有管理员权限。

答案 1 :(得分:0)

这是@makhdumi的答案中建议的调用netsh.exe的C#实现:

用法:

static public bool TryGetCurrentProcessRegisteredHttpPort(out List<int> ports, out Exception ex)
{
    NetshInvoker netsh = new NetshInvoker();
    return netsh.TryGetHttpPortUseByProcessId(Process.GetCurrentProcess().Id, out ports, out ex);
}

实施:

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;

namespace YourCompanyName.Server.ServerCommon.Utility
{
    /// <summary>
    /// Invoke netsh.exe and extract information from its output.
    /// Source: @crokusek, https://stackoverflow.com/questions/32196188
    ///         @GETah, https://stackoverflow.com/a/8274758/538763
    /// </summary>
    public class NetshInvoker
    {
        const string NetshHttpShowServiceStateViewRequestqArgs = "http show servicestate view=requestq";

        public NetshInvoker()
        {
        }

        /// <summary>
        /// Call netsh.exe to determine the http port number used by a given windowsPid (e.g. an IIS Express process)
        /// </summary>
        /// <param name="windowsPid">For example an IIS Express process</param>
        /// <param name="port"></param>
        /// <param name="ex"></param>
        /// <returns></returns>
        public bool TryGetHttpPortUseByProcessId(Int32 windowsPid, out List<Int32> ports, out Exception ex)
        {
            ports = null;

            try
            {
                if (!TryQueryProcessIdRegisteredUrls(out Dictionary<Int32, List<string>> pidToUrlMap, out ex))
                    return false;

                if (!pidToUrlMap.TryGetValue(windowsPid, out List<string> urls))
                {
                    throw new Exception(String.Format("Unable to locate windowsPid {0} in '{1}' output.",
                        windowsPid, "netsh " + NetshHttpShowServiceStateViewRequestqArgs));
                }

                if (!urls.Any())
                {
                    throw new Exception(String.Format("WindowsPid {0} did not reference any URLs in '{1}' output.",
                        windowsPid, "netsh " + NetshHttpShowServiceStateViewRequestqArgs));
                }

                ports = urls
                    .Select(u => new Uri(u).Port)
                    .ToList();

                return true;
            }
            catch (Exception ex_)
            {
                ex = ex_;
                return false;
            }
        }

        private bool TryQueryProcessIdRegisteredUrls(out Dictionary<Int32, List<string>> pidToUrlMap, out Exception ex)
        {
            if (!TryExecNetsh(NetshHttpShowServiceStateViewRequestqArgs, out string output, out ex))
            {
                pidToUrlMap = null;
                return false;
            }

            bool gotRequestQueueName = false;
            bool gotPidStart = false;
            int currentPid = 0;
            bool gotUrlStart = false;

            pidToUrlMap = new Dictionary<int, List<string>>();

            foreach (string line in output.Split('\n').Select(s => s.Trim()))
            {
                if (!gotRequestQueueName)
                {
                    gotRequestQueueName = line.StartsWith("Request queue name:");
                }
                else if (!gotPidStart)
                {
                    gotPidStart = line.StartsWith("Process IDs:");
                }
                else if (currentPid == 0)
                {
                    Int32.TryParse(line, out currentPid);   // just get the first Pid, ignore others.
                }
                else if (!gotUrlStart)
                {
                    gotUrlStart = line.StartsWith("Registered URLs:");
                }
                else if (line.ToLowerInvariant().StartsWith("http"))
                {
                    if (!pidToUrlMap.TryGetValue(currentPid, out List<string> urls))
                        pidToUrlMap[currentPid] = urls = new List<string>();

                    urls.Add(line);
                }
                else // reset
                {
                    gotRequestQueueName = false;
                    gotPidStart = false;
                    currentPid = 0;
                    gotUrlStart = false;
                }
            }
            return true;
        }

        private bool TryExecNetsh(string args, out string output, out Exception exception)
        {
            output = null;
            exception = null;

            try
            {
                // From @GETah, https://stackoverflow.com/a/8274758/538763

                Process p = new Process();
                p.StartInfo.FileName = "netsh.exe";
                p.StartInfo.Arguments = args;
                p.StartInfo.UseShellExecute = false;
                p.StartInfo.RedirectStandardOutput = true;
                p.Start();

                output = p.StandardOutput.ReadToEnd();
                return true;
            }
            catch (Exception ex)
            {
                exception = ex;
                return false;
            }
        }
    }
}

答案 2 :(得分:-1)

您可以运行以下命令来获取可执行文件及其PID的信息

netstat -a -n -o -b | find "iisexpress.exe"