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Advanced JavaScript with Internet Explorer: Retrieving Networking Configuration Information


This is the second article in a series focusing on retrieving system (or client) information using JavaScript and presenting the same on a web page. You can directly copy and paste all of the code samples present in this article into a file with extension “.htm” and open them in Internet Explorer 5.5+.

Author Info:
By: Jagadish Chaterjee
Rating: 4 stars4 stars4 stars4 stars4 stars / 37
April 04, 2006
TABLE OF CONTENTS:
  1. · Advanced JavaScript with Internet Explorer: Retrieving Networking Configuration Information
  2. · How to retrieve MAC address and other extended network information using JavaScript
  3. · How to retrieve network client information using JavaScript
  4. · How to retrieve the Win Proxy information for your computer using JavaScript
  5. · How to retrieve only network adapter information using JavaScript
  6. · How to retrieve network connection information using JavaScript

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Advanced JavaScript with Internet Explorer: Retrieving Networking Configuration Information - How to retrieve network connection information using JavaScript
(Page 6 of 6 )

Now, let us try to develop a simple script (JavaScript) which shows the technique for retrieving all the network connections mapped to your system.  The entire code for the sample is as follows:

<!DOCTYPE  HTML  PUBLIC  "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
      <head>
            <title></title>
            <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
            <meta name="vs_targetSchema" content="http://schemas.
microsoft.com/intellisense/ie5">
            <script id="clientEventHandlersJS" language="javascript">
<!--

function Button1_onclick() {
      var locator = new ActiveXObject ("WbemScripting.SWbemLocator");
      var service = locator.ConnectServer(".");
      var properties = service.ExecQuery("SELECT * FROM Win32_NetworkConnection");
      var e = new Enumerator (properties);
      document.write("<table border=1>");
      dispHeading();
      for (;!e.atEnd();e.moveNext ())
      {
            var p = e.item ();
            document.write("<tr>");
            document.write("<td>" + p.Caption + "</td>");
            document.write("<td>" + p.ConnectionState + "</td>");
            document.write("<td>" + p.ConnectionType + "</td>");
            document.write("<td>" + p.Description + "</td>");
            document.write("<td>" + p.DisplayType + "</td>");
            document.write("<td>" + p.LocalName + "</td>");
            document.write("<td>" + p.Name + "</td>");
            document.write("<td>" + p.RemoteName + "</td>");
            document.write("<td>" + p.RemotePath + "</td>");
            document.write("<td>" + p.ResourceType + "</td>");
            document.write("<td>" + p.Status + "</td>");
            document.write("</tr>");
      }
      document.write("</table>");
}

function dispHeading()
{
      document.write("<thead>");
      document.write("<td>Caption</td>");
        document.write("<td>ConnectionState</td>");
        document.write("<td>ConnectionType</td>");
      document.write("<td>Description</td>");
      document.write("<td>DisplayType</td>");
      document.write("<td>LocalName</td>");
      document.write("<td>Name</td>");
      document.write("<td>RemoteName</td>");
      document.write("<td>RemotePath</td>");
      document.write("<td>ResourceType</td>");
      document.write("<td>Status</td>");
      document.write("</thead>");
}

//-->
            </script>
      </head>
      <body>
            <INPUT id="Button1" type="button" value="Button" 
name="Button1" language="javascript" onclick="return Button1_onclick()">
      </body>
</html>

The above would automatically list all remote/LAN network connections belonging to your system, along with only a few of the properties like LocalName, UNC path name, ConnectionState, and so on. To retrieve this information, I used a built-in class, “Win32_NetworkConnection.”  The class internally has a lot of properties, methods and events.  But, in the above example we concentrated only on some limited properties related to the “Win32_NetworkConnection” class.

The “for” loop I used in the above code iterates for every network connection mapped on your system and finally retrieves only the properties of that connection.

Any comments, suggestions, bugs, errors, feedback etc. are highly appreciated at jag_chat@yahoo.com.

 


DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware.

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