C＃Powershell実行エラー（スクリプトはPowershellでうまく動作します）

Question

問題の簡単な概要：Powershellスクリプトをダウンロードしました。目的は、実行するためにカンマ区切りのIPアドレスを 'computername'という名前のパラメータnetstatを実行して値を返します。 Powershellコンソールからこのスクリプトを実行すると、完璧に動作します。私はその後、C＃用のPowerShellスクリプトの実行例を読み込み、ローカルマシン上で動作させましたが、computernameパラメータとアドレスリストを追加すると、RPC Server Unavailableエラーで失敗します。以下は、PowerShellスクリプト自体である：ここでは

 <# 
     .SYNOPSIS 
      Display current TCP/IP connections for local or remote system 

     .FUNCTIONALITY 
      Computers 

     .DESCRIPTION 
      Display current TCP/IP connections for local or remote system. Includes the process ID (PID) and process name for each connection. 
      If the port is not yet established, the port number is shown as an asterisk (*).  

     .PARAMETER ProcessName 
      Gets connections by the name of the process. The default value is '*'. 

     .PARAMETER Port 
      The port number of the local computer or remote computer. The default value is '*'. 

     .PARAMETER Address 
      Gets connections by the IP address of the connection, local or remote. Wildcard is supported. The default value is '*'. 

     .PARAMETER Protocol 
      The name of the protocol (TCP or UDP). The default value is '*' (all) 

     .PARAMETER State 
      Indicates the state of a TCP connection. The possible states are as follows: 

      Closed  - The TCP connection is closed. 
      Close_Wait - The local endpoint of the TCP connection is waiting for a connection termination request from the local user. 
      Closing  - The local endpoint of the TCP connection is waiting for an acknowledgement of the connection termination request sent previously. 
      Delete_Tcb - The transmission control buffer (TCB) for the TCP connection is being deleted. 
      Established - The TCP handshake is complete. The connection has been established and data can be sent. 
      Fin_Wait_1 - The local endpoint of the TCP connection is waiting for a connection termination request from the remote endpoint or for an acknowledgement of the connection termination request sent previously. 
      Fin_Wait_2 - The local endpoint of the TCP connection is waiting for a connection termination request from the remote endpoint. 
      Last_Ack  - The local endpoint of the TCP connection is waiting for the final acknowledgement of the connection termination request sent previously. 
      Listen  - The local endpoint of the TCP connection is listening for a connection request from any remote endpoint. 
      Syn_Received - The local endpoint of the TCP connection has sent and received a connection request and is waiting for an acknowledgment. 
      Syn_Sent  - The local endpoint of the TCP connection has sent the remote endpoint a segment header with the synchronize (SYN) control bit set and is waiting for a matching connection request. 
      Time_Wait - The local endpoint of the TCP connection is waiting for enough time to pass to ensure that the remote endpoint received the acknowledgement of its connection termination request. 
      Unknown  - The TCP connection state is unknown. 

      Values are based on the TcpState Enumeration: 
      http://msdn.microsoft.com/en-us/library/system.net.networkinformation.tcpstate%28VS.85%29.aspx 

      Cookie Monster - modified these to match netstat output per here: 
      http://support.microsoft.com/kb/137984 

     .PARAMETER ComputerName 
      If defined, run this command on a remote system via WMI. \\computername\c$\netstat.txt is created on that system and the results returned here 

     .PARAMETER ShowHostNames 
      If specified, will attempt to resolve local and remote addresses. 

     .PARAMETER tempFile 
      Temporary file to store results on remote system. Must be relative to remote system (not a file share). Default is "C:\netstat.txt" 

     .PARAMETER AddressFamily 
      Filter by IP Address family: IPv4, IPv6, or the default, * (both). 

      If specified, we display any result where both the localaddress and the remoteaddress is in the address family. 

     .EXAMPLE 
      Get-NetworkStatistics | Format-Table 

     .EXAMPLE 
      Get-NetworkStatistics iexplore -computername k-it-thin-02 -ShowHostNames | Format-Table 

     .EXAMPLE 
      Get-NetworkStatistics -ProcessName md* -Protocol tcp 

     .EXAMPLE 
      Get-NetworkStatistics -Address 192* -State LISTENING 

     .EXAMPLE 
      Get-NetworkStatistics -State LISTENING -Protocol tcp 

     .EXAMPLE 
      Get-NetworkStatistics -Computername Computer1, Computer2 

     .EXAMPLE 
      'Computer1', 'Computer2' | Get-NetworkStatistics 

     .OUTPUTS 
      System.Management.Automation.PSObject 

     .NOTES 
      Author: Shay Levy, code butchered by Cookie Monster 
      Shay's Blog: http://PowerShay.com 
      Cookie Monster's Blog: http://ramblingcookiemonster.github.io/ 

     .LINK 
      http://gallery.technet.microsoft.com/scriptcenter/Get-NetworkStatistics-66057d71 
     #> 
     [OutputType('System.Management.Automation.PSObject')] 
     [CmdletBinding()] 
     param(

      [Parameter(Position=0)] 
      [System.String]$ProcessName='*', 

      [Parameter(Position=1)] 
      [System.String]$Address='*',   

      [Parameter(Position=2)] 
      $Port='*', 

      [Parameter(Position=3, 
         ValueFromPipeline = $True, 
         ValueFromPipelineByPropertyName = $True)] 
      [System.String[]]$ComputerName=$env:COMPUTERNAME, 

      [ValidateSet('*','tcp','udp')] 
      [System.String]$Protocol='*', 

      [ValidateSet('*','Closed','Close_Wait','Closing','Delete_Tcb','DeleteTcb','Established','Fin_Wait_1','Fin_Wait_2','Last_Ack','Listening','Syn_Received','Syn_Sent','Time_Wait','Unknown')] 
      [System.String]$State='*', 

      [switch]$ShowHostnames, 

      [switch]$ShowProcessNames = $true, 

      [System.String]$TempFile = "C:\netstat.txt", 

      [validateset('*','IPv4','IPv6')] 
      [string]$AddressFamily = '*' 
     ) 

     begin{ 
      #Define properties 
       $properties = 'ComputerName','Protocol','LocalAddress','LocalPort','RemoteAddress','RemotePort','State','ProcessName','PID' 

      #store hostnames in array for quick lookup 
       $dnsCache = @{} 

     } 

     process{ 

      foreach($Computer in $ComputerName) { 

       #Collect processes 
       if($ShowProcessNames){ 
        Try { 
         $processes = Get-Process -ComputerName $Computer -ErrorAction stop | select name, id 
        } 
        Catch { 
         Write-warning "Could not run Get-Process -computername $Computer. Verify permissions and connectivity. Defaulting to no ShowProcessNames" 
         $ShowProcessNames = $false 
        } 
       } 

       #Handle remote systems 
        if($Computer -ne $env:COMPUTERNAME){ 

         #define command 
          [string]$cmd = "cmd /c c:\windows\system32\netstat.exe -ano >> $tempFile" 

         #define remote file path - computername, drive, folder path 
          $remoteTempFile = "\\{0}\{1}`${2}" -f "$Computer", (split-path $tempFile -qualifier).TrimEnd(":"), (Split-Path $tempFile -noqualifier) 

         #delete previous results 
          Try{ 
           $null = Invoke-WmiMethod -class Win32_process -name Create -ArgumentList "cmd /c del $tempFile" -ComputerName $Computer -ErrorAction stop 
          } 
          Catch{ 
           Write-Warning "Could not invoke create win32_process on $Computer to delete $tempfile" 
          } 

         #run command 
          Try{ 
           $processID = (Invoke-WmiMethod -class Win32_process -name Create -ArgumentList $cmd -ComputerName $Computer -ErrorAction stop).processid 
          } 
          Catch{ 
           #If we didn't run netstat, break everything off 
           Throw $_ 
           Break 
          } 

         #wait for process to complete 
          while (
           #This while should return true until the process completes 
            $(
             try{ 
              get-process -id $processid -computername $Computer -ErrorAction Stop 
             } 
             catch{ 
              $FALSE 
             } 
            ) 
          ) { 
           start-sleep -seconds 2 
          } 

         #gather results 
          if(test-path $remoteTempFile){ 

           Try { 
            $results = Get-Content $remoteTempFile | Select-String -Pattern '\s+(TCP|UDP)' 
           } 
           Catch { 
            Throw "Could not get content from $remoteTempFile for results" 
            Break 
           } 

           Remove-Item $remoteTempFile -force 

          } 
          else{ 
           Throw "'$tempFile' on $Computer converted to '$remoteTempFile'. This path is not accessible from your system." 
           Break 
          } 
        } 
        else{ 
         #gather results on local PC 
          $results = netstat -ano | Select-String -Pattern '\s+(TCP|UDP)' 
        } 

       #initialize counter for progress 
        $totalCount = $results.count 
        $count = 0 

       #Loop through each line of results  
        foreach($result in $results) { 

         $item = $result.line.split(' ',[System.StringSplitOptions]::RemoveEmptyEntries) 

         if($item[1] -notmatch '^\[::'){ 

          #parse the netstat line for local address and port 
           if (($la = $item[1] -as [ipaddress]).AddressFamily -eq 'InterNetworkV6'){ 
            $localAddress = $la.IPAddressToString 
            $localPort = $item[1].split('\]:')[-1] 
           } 
           else { 
            $localAddress = $item[1].split(':')[0] 
            $localPort = $item[1].split(':')[-1] 
           } 

          #parse the netstat line for remote address and port 
           if (($ra = $item[2] -as [ipaddress]).AddressFamily -eq 'InterNetworkV6'){ 
            $remoteAddress = $ra.IPAddressToString 
            $remotePort = $item[2].split('\]:')[-1] 
           } 
           else { 
            $remoteAddress = $item[2].split(':')[0] 
            $remotePort = $item[2].split(':')[-1] 
           } 

          #Filter IPv4/IPv6 if specified 
           if($AddressFamily -ne "*") 
           { 
            if($AddressFamily -eq 'IPv4' -and $localAddress -match ':' -and $remoteAddress -match ':|\*') 
            { 
             #Both are IPv6, or ipv6 and listening, skip 
             Write-Verbose "Filtered by AddressFamily:`n$result" 
             continue 
            } 
            elseif($AddressFamily -eq 'IPv6' -and $localAddress -notmatch ':' -and ($remoteAddress -notmatch ':' -or $remoteAddress -match '*')) 
            { 
             #Both are IPv4, or ipv4 and listening, skip 
             Write-Verbose "Filtered by AddressFamily:`n$result" 
             continue 
            } 
           } 

          #parse the netstat line for other properties 
           $procId = $item[-1] 
           $proto = $item[0] 
           $status = if($item[0] -eq 'tcp') {$item[3]} else {$null}  

          #Filter the object 
           if($remotePort -notlike $Port -and $localPort -notlike $Port){ 
            write-verbose "remote $Remoteport local $localport port $port" 
            Write-Verbose "Filtered by Port:`n$result" 
            continue 
           } 

           if($remoteAddress -notlike $Address -and $localAddress -notlike $Address){ 
            Write-Verbose "Filtered by Address:`n$result" 
            continue 
           } 

           if($status -notlike $State){ 
            Write-Verbose "Filtered by State:`n$result" 
            continue 
           } 

           if($proto -notlike $Protocol){ 
            Write-Verbose "Filtered by Protocol:`n$result" 
            continue 
           } 

          #Display progress bar prior to getting process name or host name 
           Write-Progress -Activity "Resolving host and process names"` 
            -Status "Resolving process ID $procId with remote address $remoteAddress and local address $localAddress"` 
            -PercentComplete (($count/$totalCount) * 100) 

          #If we are running showprocessnames, get the matching name 
           if($ShowProcessNames -or $PSBoundParameters.ContainsKey -eq 'ProcessName'){ 

            #handle case where process spun up in the time between running get-process and running netstat 
            if($procName = $processes | Where {$_.id -eq $procId} | select -ExpandProperty name){ } 
            else {$procName = "Unknown"} 

           } 
           else{$procName = "NA"} 

           if($procName -notlike $ProcessName){ 
            Write-Verbose "Filtered by ProcessName:`n$result" 
            continue 
           } 

          #if the showhostnames switch is specified, try to map IP to hostname 
           if($showHostnames){ 
            $tmpAddress = $null 
            try{ 
             if($remoteAddress -eq "127.0.0.1" -or $remoteAddress -eq "0.0.0.0"){ 
              $remoteAddress = $Computer 
             } 
             elseif($remoteAddress -match "\w"){ 

              #check with dns cache first 
               if ($dnsCache.containskey($remoteAddress)) { 
                $remoteAddress = $dnsCache[$remoteAddress] 
                write-verbose "using cached REMOTE '$remoteAddress'" 
               } 
               else{ 
                #if address isn't in the cache, resolve it and add it 
                 $tmpAddress = $remoteAddress 
                 $remoteAddress = [System.Net.DNS]::GetHostByAddress("$remoteAddress").hostname 
                 $dnsCache.add($tmpAddress, $remoteAddress) 
                 write-verbose "using non cached REMOTE '$remoteAddress`t$tmpAddress" 
               } 
             } 
            } 
            catch{ } 

            try{ 

             if($localAddress -eq "127.0.0.1" -or $localAddress -eq "0.0.0.0"){ 
              $localAddress = $Computer 
             } 
             elseif($localAddress -match "\w"){ 
              #check with dns cache first 
               if($dnsCache.containskey($localAddress)){ 
                $localAddress = $dnsCache[$localAddress] 
                write-verbose "using cached LOCAL '$localAddress'" 
               } 
               else{ 
                #if address isn't in the cache, resolve it and add it 
                 $tmpAddress = $localAddress 
                 $localAddress = [System.Net.DNS]::GetHostByAddress("$localAddress").hostname 
                 $dnsCache.add($localAddress, $tmpAddress) 
                 write-verbose "using non cached LOCAL '$localAddress'`t'$tmpAddress'" 
               } 
             } 
            } 
            catch{ } 
           } 

          #Write the object 
           New-Object -TypeName PSObject -Property @{ 
            ComputerName = $Computer 
            PID = $procId 
            ProcessName = $procName 
            Protocol = $proto 
            LocalAddress = $localAddress 
            LocalPort = $localPort 
            RemoteAddress =$remoteAddress 
            RemotePort = $remotePort 
            State = $status 
           } | Select-Object -Property $properties        

          #Increment the progress counter 
           $count++ 
         } 
        } 
      } 
     } 

は、私はそれ以上のコマンドが実行される実行すると、私は（GET-NetworkStatistics2.ps1命名された）上記のスクリプト

PS C:\Scripts> C:\Scripts\Get-NetworkStatistics2.ps1 -AddressFamily IPv4 -ComputerName 10.66.64.43, 10.66.41.69, 10.66.41.70, 10.66.41.71, 10.66.44.92, 10.27.40.105, 10.66.40.20, 10.66.40.182, 10.66.64.46, 10.66.64.45, 10.27.40.106, 10.40.21.249, 10.40.21.195, 10.40.21.225, 10.40.21.213, 10.40.21.221, 10.66.44.60, 10.66.62.65, 10.66.62.66 | Format-Table -autosize >> "C:\scripts\201703041042.txt" 

を養うPowerShellコマンドであります完璧にして、結果をコマンドの最後に示されたファイルにパイプします。

public void ExecuteSynchronously() 
    { 
     string sTab = "\t"; //make a tab character for file line formatting 

     //this will be my output file 
     TextWriter oTxt = File.AppendText(@"C:\Clients\FOO\NetStats\PSDumps.txt"); 

     //here we read the script in from a file 
     string sScript; 
     TextReader oScript = File.OpenText(@"C:\Clients\FOO\Scripts\Get-NetworkStatistics2.ps1"); 
     sScript = oScript.ReadToEnd(); 
     //textreader cleanup 
     oScript.Close(); 
     oScript.Dispose(); 
     oScript = null; 

     using (PowerShell PowerShellInstance = PowerShell.Create()) 
     { 

      // use "AddScript" to add the contents of a script file to the end of the execution pipeline. 
      // use "AddCommand" to add individual commands/cmdlets to the end of the execution pipeline. 
      PowerShellInstance.AddScript(sScript); //add my script 

      //add the list of computers 
      PowerShellInstance.AddParameter("computername", "10.66.64.43, 10.66.41.69, 10.66.41.70, 10.66.41.71, 10.66.44.92, 10.27.40.105, 10.66.40.20, 10.66.40.182, 10.66.64.46, 10.66.64.45, 10.27.40.106, 10.40.21.249, 10.40.21.195, 10.40.21.225, 10.40.21.213, 10.40.21.221, 10.66.44.60, 10.66.62.65, 10.66.62.66"); 

      //add the flag to say I am not interested in IPv6 
      PowerShellInstance.AddParameter("AddressFamily", "IPv4"); 

      // invoke execution on the pipeline (collecting output) 
      var PSOutput = PowerShellInstance.Invoke(); 

      // check the other output streams (for example, the error stream) 
      if (PowerShellInstance.Streams.Error.Count > 0) 
      { 
       //not done this yet :) 
       // error records were written to the error stream. 
       // do something with the items found. 
      } 

      string sLine = ""; 

      //// loop through each output object item and build my own tab delimed file... 
      foreach (PSObject outputItem in PSOutput) 
      { 
       foreach (PSNoteProperty prop in outputItem.Properties) 
       { 
        if (prop.Value == null) 
        { 
         sLine += "" + sTab; 
        } 
        else 
        { 
         sLine += prop.Value.ToString() + sTab; 
        } 
       } 

       sLine = sLine.Trim(); 
       oTxt.WriteLine(sLine); 
       sLine = ""; 

      } 
      //textwriter cleanup 
      oTxt.Close(); 
      oTxt.Dispose(); 
      oTxt = null; 
     } 
    } 

そして最後に...ここでは、C＃の実行によって生成されたエラーメッセージは次のとおりです。ここで

は、この同じビットを実行するexeファイルを作成するためのC＃コードです。

Unhandled Exception: System.Management.Automation.RuntimeException: The RPC serv 
    er is unavailable. (Exception from HRESULT: 0x800706BA) ---> System.Runtime.Inte 
    ropServices.COMException: The RPC server is unavailable. (Exception from HRESULT 
    : 0x800706BA) 
     at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 e 
    rrorCode, IntPtr errorInfo) 
     at System.Runtime.InteropServices.Marshal.ThrowExceptionForHR(Int32 errorCode 
    ) 
     at System.Management.ManagementScope.InitializeGuts(Object o) 
     at System.Management.ManagementScope.Initialize() 
     at System.Management.ManagementObject.Initialize(Boolean getObject) 
     at System.Management.ManagementObject.GetMethodParameters(String methodName, 
    ManagementBaseObject& inParameters, IWbemClassObjectFreeThreaded& inParametersCl 
    ass, IWbemClassObjectFreeThreaded& outParametersClass) 
     at System.Management.ManagementObject.GetMethodParameters(String methodName) 
     at Microsoft.PowerShell.Commands.InvokeWmiMethod.ProcessRecord() 
     --- End of inner exception stack trace --- 
     at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable inp 
    ut) 
     at System.Management.Automation.PowerShell.Worker.ConstructPipelineAndDoWork(
    Runspace rs, Boolean performSyncInvoke) 
     at System.Management.Automation.PowerShell.Worker.CreateRunspaceIfNeededAndDo 
    Work(Runspace rsToUse, Boolean isSync) 
     at System.Management.Automation.PowerShell.CoreInvokeHelper[TInput,TOutput](P 
    SDataCollection`1 input, PSDataCollection`1 output, PSInvocationSettings setting 
    s) 
     at System.Management.Automation.PowerShell.CoreInvoke[TInput,TOutput](PSDataC 
    ollection`1 input, PSDataCollection`1 output, PSInvocationSettings settings) 
     at System.Management.Automation.PowerShell.CoreInvoke[TOutput](IEnumerable in 
    put, PSDataCollection`1 output, PSInvocationSettings settings) 
     at System.Management.Automation.PowerShell.Invoke(IEnumerable input, PSInvoca 
    tionSettings settings) 
     at System.Management.Automation.PowerShell.Invoke() 
     at PowerShellExecutionSample.PowerShellExecutor.ExecuteSynchronously() 
     at PowerShellExecutionSample.Program.Main(String[] args)   

誰でも私のC＃exeでこれを実行しようとしている同じボックスのPowershellでの動作を説明できますか？

私はローカルマシン上でnetstatを実行するだけのバージョンを作成し、正常に動作し、完璧なファイルを生成したことに注意してください。

お手数ですがお寄せいただきありがとうございます。

Answer 1

本当にこのための小道具は@ mklement0です。彼は私に問題を隔離するより簡単なアプローチをとることを奨励した。

上記の質問に「ComputerName」という名前のパラメータがありました。コンマで区切られた値の文字列（コンマ+スペースでさえ）を使用して、Powershell ISEからスクリプトを実行するとうまくいきました。私はそれをC＃プログラムに持ってきて、それを動かすとうまくはなかった。だから私は@mklementの提案を受け取り、単一のリモートIPを接続していて、うまくいきました。その時点で私は問題がこの分野にあることを知っていました。私はIPアドレスの文字列を配列に変換し、配列をComputerNameパラメータ値として使用しました。それは働いている。私はPowershellでかなり新しく、C＃でもすばらしいことはありません。ヘルプとそれを読んでくれてありがとう。