Sunday, September 1, 2013

.NET Ping and RTT object collection

[This example is code from a book I am writing to be titled "Powershell: Logic, Syntax, and Semantics".   All rights for the code below are reserved.] The code below uses .NET as the basis for a ping by name or IP function. RTT statistics are returned as objects.

# Uncomment two lines below to expose Methods and Properties:
# ([System.Net.NetworkInformation.Ping]).DeclaredMethods.Name
# ([System.Net.NetworkInformation.PingOptions]).DeclaredProperties.Name


$ping = new-object System.Net.NetworkInformation.Ping
$pingoptions = new-object System.Net.NetworkInformation.PingOptions
$pingoptions.ttl=255
$pingoptions.dontfragment=$false


function pingstring($x,$y) {$i=0;$count=$y; do {$ping.Send("$x");$i++} while($i -lt $count)}


[array[]]$hosts="nyt.com","latimes.com","sfgate.com","wapo.com"
Function Ping-Collection ($hosts, $PingCount) {
foreach ($i in $hosts) {
$host_stats = $i | foreach-object {pingstring $psitem $PingCount }
New-Object psobject -property @{
Host = [STRING]$i
IPAddresses=($host_stats.get_Address()).IPAddressToString
RTTs = $host_stats.roundtriptime
RTT_Count = [FLOAT]($host_stats | Measure-object -property roundtriptime).count
RTT_Sum = [FLOAT]($host_stats | Measure-object -property roundtriptime -sum).sum
RTT_Average = [FLOAT]($host_stats | Measure-object -property roundtriptime -average).average
} | Select @{Name="IPAddress";Expression={$_.IPAddresses | get-unique}},Host,RTTs,RTT_Count,RTT_Sum,RTT_Average
}
}


#[Result as show below]


PS C:\ps1> Ping-Collection $hosts 12 | ft -auto

IPAddress       Host        RTTs                RTT_Count RTT_Sum RTT_Average
---------       ----        ----                --------- ------- -----------
170.149.172.130 nyt.com     {18, 19, 20, 20...}        12     241    20.08333
163.192.187.17  latimes.com {79, 71, 86, 73...}        12     884    73.66666
174.143.228.153 sfgate.com  {58, 58, 57, 56...}        12     695    57.91667
208.185.109.113 wapo.com    {90, 91, 93, 91...}        12    1103    91.91666

For a class C subnet range of IP Addresses of 10 pings  of default packet size (255 addresses * 10 RTT * 32 bytes) :

$hosts = foreach($i in (1..255)) {[IPAddress]"23.1.1.$i"}

PS C:\> measure-command {$PingCollection=Ping-Collection $hosts 10}

Days              : 0
Hours             : 0
Minutes           : 7
Seconds           : 15
Milliseconds      : 619
Ticks             : 4356193908
TotalDays         : 0.00504189109722222
TotalHours        : 0.121005386333333
TotalMinutes      : 7.26032318
TotalSeconds      : 435.6193908
TotalMilliseconds : 435619.3908

PS C:\> $PingCollection.count
255
PS C:\> $PingCollection.count | sort RTT_Average | ft -auto | more
255

PS C:\> $PingCollection | sort RTT_Average | ft -auto | more

IPAddress  Host       RTTs                    RTT_Count RTT_Sum RTT_Average
---------  ----       ----                    --------- ------- -----------
           23.1.1.255 {0, 0, 0, 0...}                10       0           0
           23.1.1.1   {0, 0, 0, 0...}                10       0           0
23.1.1.5   23.1.1.5   {99, 98, 99, 100...}           10    1084       108.4
23.1.1.137 23.1.1.137 {129, 115, 124, 117...}        10    1097       109.7
23.1.1.40  23.1.1.40  {110, 136, 106, 106...}        10    1125       112.5
23.1.1.198 23.1.1.198 {111, 106, 121, 109...}        10    1131       113.1
23.1.1.27  23.1.1.27  {117, 107, 132, 108...}        10    1132       113.2
23.1.1.33  23.1.1.33  {106, 142, 110, 108...}        10    1137       113.7
23.1.1.251 23.1.1.251 {107, 119, 113, 111...}        10    1138       113.8
23.1.1.41  23.1.1.41  {133, 106, 102, 101...}        10    1146       114.6
23.1.1.178 23.1.1.178 {111, 110, 119, 134...}        10    1147       114.7

....





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