# encoding: ascii # api: powershell # title: Test-TCPPort # description: - NOTES # version: 0.1 # type: function # author: Andy Arismendi # license: CC0 # function: Test-TCPPort # x-poshcode-id: 3058 # x-archived: 2015-01-24T06:34:30 # x-published: 2012-11-20T13:55:00 # # Author : Christophe CREMON (uxone) – http://powershell.codeplex.com # Requires : PowerShell V2 # Test if a TCP Port is open or not. # - EndPoint can be a hostname or an IP address # - EXAMPLE # Test-TCPPort -ComputerName server1 -Port 80 # Return true if port is open, false otherwise # - Revision History: # 2011-11-20: Andy Arismendi – Added error handling, forcing use of IP v4 so the IPAddress parse method doesn’t bomb. # function Test-TCPPort { param ( [parameter(Mandatory=$true)] [string] $ComputerName, [parameter(Mandatory=$true)] [string] $Port ) try { $TimeOut = 5000 $IsConnected = $false $Addresses = [System.Net.Dns]::GetHostAddresses($ComputerName) | ? {$_.AddressFamily -eq 'InterNetwork'} $Address = [System.Net.IPAddress]::Parse($Addresses) $Socket = New-Object System.Net.Sockets.TCPClient $Connect = $Socket.BeginConnect($Address, $Port, $null, $null) $Wait = $Connect.AsyncWaitHandle.WaitOne($TimeOut, $false) if ( $Socket.Connected ) { $IsConnected = $true $Socket.Close() } else { $IsConnected = $false } } catch { Write-Debug $_ $IsConnected = $false } finally { return $IsConnected } }