Hello World for Powershell Send-XmlRcpRequest?

Question

Desired output something like:

<?xml version="1.0"?>
<methodResponse>
  <params>
    <param>
        <value><string>South Dakota</string></value>
    </param>
  </params>
</methodResponse>

How do I use the xml-rpc powershell module to view the response?

Perhaps it's possible to "cat" or somehow pipe the result from baidu to something that will print it? Or, put it into an object?

PS /home/nicholas/powershell> 
PS /home/nicholas/powershell> Send-XmlRpcRequest -Url "http://ping.baidu.com/ping/RPC2" -MethodName "weblogUpdates.extendedPing" -Params @('jdon')                             

xml                            methodResponse
---                            --------------
version="1.0" encoding="UTF-8" methodResponse

PS /home/nicholas/powershell>

or the more full request:

Send-XmlRpcRequest -Url "http://ping.baidu.com/ping/RPC2" -MethodName "weblogUpdates.extendedPing" -Params @('jdon','http://www.jdon.com/','http://www.jdon.com/47686','http://www.jdon.com/rss')

generates a similar result. Something like:

$http = New-Object Chilkat.Http

$xmlReq = "<?xml version=`"1.0`"?><methodCall><methodName>demo.sayHello</methodName><params /></methodCall>"

$xmlResponse = $http.XmlRpc("http://www.cknotes.com/xmlrpc.php",$xmlReq)
if ($http.LastMethodSuccess -ne $true) {
    $($http.LastErrorText)
    exit
}

$($xmlResponse)

except, with this module, where is the response?

score 1 · Accepted Answer · answered Nov 17 '20 at 13:09

So your question is really "How do I convert an xml document to a string with nice and readable formatting" - the answer to which might look something like this:

function Convert-XmlToString
{
  param(
    [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)]
    [xml]$Xml
  )

  begin {
    # Create formatting settings
    $writerSettings = [System.Xml.XmlWriterSettings]@{Indent = $true; OmitXmlDeclaration = $true}

    # Create StringBuilder
    $stringBuilder = [System.Text.StringBuilder]::new()
  }

  process {
    try {
      # Create XmlWriter
      $xmlWriter = [System.Xml.XmlTextWriter]::Create($stringBuilder, $writerSettings)

      # Write xml document to XmlWriter
      $xml.WriteContentTo($xmlWriter)

      # Flush XmlWriter to output target (ie. the stringbuilder)
      $xmlWriter.Flush()

      # Output resulting string
      $stringBuilder.ToString()
    }
    finally{
      # Clean up
      $xmlWriter.Dispose()
      $stringBuilder = $stringBuilder.Clear()
    }
  }
}

With which you should be able to do something like:

PS C:\> $xmlRPCResponse = Send-XmlRpcRequest -Url "http://ping.baidu.com/ping/RPC2" -MethodName "weblogUpdates.extendedPing" -Params @('jdon','http://www.jdon.com/','http://www.jdon.com/47686','http://www.jdon.com/rss')  
PS C:\> $xmlRPCResponse |Convert-XmlToString
<methodResponse>
  <params>
    <param>
        <value><string>South Dakota</string></value>
    </param>
  </params>
</methodResponse>

Is there better URL and example parameter to test? Just to consume a response, or print it, really. as above. — Nicholas Saunders, Nov 17 '20 at 13:20
it's okay, you answered the q, thank you. just looking for a more interesting example. no worries. — Nicholas Saunders, Nov 17 '20 at 13:29

Nicholas Saunders · Answer 2 · 2020-11-17T13:22:26.387

0

this is close:

PS /home/nicholas> 
PS /home/nicholas> $xmlRPCResponse = Send-XmlRpcRequest -Url "http://ping.baidu.com/ping/RPC2" -MethodName "weblogUpdates.extendedPing" -Params @('jdon','http://www.jdon.com/','http://www.jdon.com/47686','http://www.jdon.com/rss')  
PS /home/nicholas> 
PS /home/nicholas> $xmlRPCResponse | ConvertTo-Xml -As String                                                                       <?xml version="1.0" encoding="utf-8"?>                                                              
<Objects>
  <Object Type="System.Xml.XmlDocument">System.Xml.XmlDocument</Object>
</Objects>
PS /home/nicholas>

although not quite the desired output.

thanks to Mathias, and see:

Powershell: Convert XML to String

better result:

PS /home/nicholas> 
PS /home/nicholas> $xmlRPCResponse.OuterXml                  
<?xml version="1.0" encoding="UTF-8"?><methodResponse><params><param><value><int>0</int></value></param></params></methodResponse>
PS /home/nicholas>

although kind of a useless example. seems to work.

edited Nov 17 '20 at 13:22

answered Nov 17 '20 at 13:18

Nicholas Saunders

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28

1

That's definitely _not_ what you want - as you can see it has reduced the response object to the string `System.Xml.XmlDocument`, you've lost all the information you're trying to inspect :) – Mathias R. Jessen Nov 17 '20 at 13:20
used the dot operator? seems okay. – Nicholas Saunders Nov 17 '20 at 13:22
1

No I'm talking about `ConvertTo-Xml` – Mathias R. Jessen Nov 17 '20 at 13:33
right. doesn't `$xmlRPCResponse.OuterXml` visually "print" the `xml` to the console? – Nicholas Saunders Nov 17 '20 at 13:35
1

Yes, `$OuterXml` is indeed the string-representation of the xml document in question, so that'll work (although it won't format it nicely) – Mathias R. Jessen Nov 17 '20 at 13:37

Hello World for Powershell Send-XmlRcpRequest?

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