Public/Test-Connections.ps1
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function Test-Connections { <# .Synopsis Test-Connection to multiple devices in parallel. .Description Test-Connection to multiple devcies in parallel with a color and "watch" feature. .Example Test-Connections -TargetName 1.1.1.1 -Watch .Example Test-Connections -TargetName 1.1.1.1, 1.0.0.1, 8.8.4.4, 8.8.8.8, 9.9.9.9 -Watch .Example Test-Connections 1.1.1.1, 1.0.0.1, 8.8.4.4, 8.8.8.8, 9.9.9.9 -Watch -Repeat .Example Test-Connections 1.1.1.1, 1.0.0.1, 8.8.4.4, 8.8.8.8, 9.9.9.9 -Count 10 -Watch .Example Test-Connections $(Get-Content servers.txt) -Watch .Example @("1.1.1.1", "1.0.0.1", "8.8.4.4", "8.8.8.8", "9.9.9.9") | Test-Connections -Watch .Example Connect-VIServer esxi.local Get-VM | Test-Connections -Watch .Example (1..10) | ForEach-Object { "192.168.0.$_" } | Test-Connections -Watch .Notes Name: Test-Connections Author: David Isaacson Last Edit: 2022-04-24 Keywords: Test-Connection, ping, icmp .Link https://github.com/daisaacson/test-connections .Inputs TargetName[] .Outputs none #Requires -Version 2.0 #> [CmdletBinding(SupportsShouldProcess=$True)] Param ( [Parameter(Mandatory=$True,ValueFromPipeline=$True,HelpMessage="Stop after sending Count pings")] [string[]]$TargetName, [Parameter(Mandatory=$False)] [Alias("c")] [int]$Count=4, [Parameter(Mandatory=$False,HelpMessage="Continjously send pings")] [Alias("Continuous","t")] [switch]$Repeat, [Parameter(Mandatory=$False,HelpMessage="Delay between pings")] [int]$Delay=1, [Parameter(Mandatory=$False,HelpMessage="Interval between pings")] [Alias("u")] [int]$Update=1000, [Parameter(Mandatory=$False,HelpMessage="Watch")] [Alias("w")] [Switch]$Watch ) Begin { Write-Verbose -Message "Begin $($MyInvocation.MyCommand)" $Targets = @() # Destingwish between Windows PowerShell and PowerShell Core $WindowsPowerShell = $PSVersionTable.PSEdition -and $PSVersionTable.PSEdition -eq 'Desktop' $PowerShellCore = ! $WindowsPowerShell } Process { Write-Verbose -Message "Process $($MyInvocation.MyCommand)" If ($pscmdlet.ShouldProcess("$TargetName")) { ForEach ($Target in $TargetName) { Write-Verbose -Message "$Target, $Count, $Delay, $Repeat" Try { If ($WindowsPowerShell) { # Create new Target and Start-Job # Windows PowerShell 5.1 Test-Connection sucks, wrapper for Test-Connection to behave more like Test-Connection in PowerShell Core $Targets += [Target]::new($Target,(Start-Job -ScriptBlock { Param ([String]$TargetName, [int]$Count=4, [int]$Delay=1, [bool]$Repeat) $Ping = 0 While ($Repeat -or $Count -gt $Ping) { Write-Verbose "$($Repeat) $($Count) $($Ping)" $Ping++ $icmp = Test-Connection -ComputerName $TargetName -Count 1 -ErrorAction SilentlyContinue If ($icmp) { [PSCustomObject]@{ Ping = $Ping; Status = "Success" Latency = $icmp.ResponseTime } } else { [PSCustomObject]@{ Ping = $Ping Status = "Failed" Latency = 9999 } } Start-Sleep -Seconds $Delay } } -ArgumentList $Target, $Count, $Delay, $Repeat)) } else { If ($Repeat) { $Targets += [Target]::new($Target,(Start-Job -ScriptBlock {Param ($Target) Test-Connection -TargetName $Target -Ping -Repeat} -ArgumentList $Target)) } else { $Targets += [Target]::new($Target,(Start-Job -ScriptBlock {Param ($Target, $Count) Test-Connection -TargetName $Target -Ping -Count $Count} -ArgumentList $Target, $Count)) } } } Catch { $_ } } } } End { Write-Verbose -Message "End $($MyInvocation.MyCommand)" If ($pscmdlet.ShouldProcess("$TargetName")) { # https://blog.sheehans.org/2018/10/27/powershell-taking-control-over-ctrl-c/ # Change the default behavior of CTRL-C so that the script can intercept and use it versus just terminating the script. [Console]::TreatControlCAsInput=$True # Sleep for 1 second and then flush the key buffer so any previously pressed keys are discarded and the loop can monitor for the use of # CTRL-C. The sleep command ensures the buffer flushes correctly. Start-Sleep -Seconds 1 $Host.UI.RawUI.FlushInputBuffer() # Continue to loop while there are pending or currently executing jobs. While ($Targets.Job.HasMoreData -contains "True") { # If a key was pressed during the loop execution, check to see if it was CTRL-C (aka "3"), and if so exit the script after clearing # out any running jobs and setting CTRL-C back to normal. If ($Host.UI.RawUI.KeyAvailable -and ($Key=$Host.UI.RawUI.ReadKey("AllowCtrlC,NoEcho,IncludeKeyUp"))) { If ([Int]$Key.Character -eq 3) { Write-Warning -Message "Removing Test-Connection Jobs" If ($PowerShellCore) { Write-Host "`e[2A" } $Targets.Job | Remove-Job -Force $killed = $True [Console]::TreatControlCAsInput=$False break } # Flush the key buffer again for the next loop. $Host.UI.RawUI.FlushInputBuffer() } # Perform other work here such as process pending jobs or process out current jobs. # Get Test-Connection updates $Targets.Update() # Print Output $Targets.ToTable() | Format-Table # Move cursor up to overwrite old output If ($Watch -and $PowerShellCore) { Write-Host "`e[$($Targets.length+5)A" } # Output update delay Start-Sleep -Milliseconds $Update } # Clean up jobs If (!$killed) { $Targets.Job | Remove-Job -Force } # If in "Watch" mode, print output one last time If ($Watch) { $Targets.ToTable() | Format-Table } } } } #End function |