February 18th, 2009 
admin We can get the clients IP address using the Request object’s(The Request object retrieves the values that the client browser passed to the server during an HTTP request. ) property Request.ServerVariables Collection.
Request.ServerVariables Collection gets the values of predetermined environment variables.
“REMOTE_ADDR” gets the IP address of the remote host making the request.
ipaddr = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
here the string “ipaddr” stores the clients ip.
List Of other Request.ServerVariables Object
| Variable | Description |
|---|---|
| AUTH_TYPE | The authentication method that the server uses to validate users when they attempt to access a protected script. |
| CONTENT_LENGTH | The length of the content as given by the client. |
| CONTENT_TYPE | The data type of the content. Used with queries that have attached information, such as the HTTP queries POST and PUT. |
| GATEWAY_INTERFACE | The revision of the CGI specification used by the server. Format: CGI/revision. |
| HTTP_<HeaderName> | The value stored in the header HeaderName. Any header other than those listed in this table must be prefixed by “HTTP_” in order for the ServerVariables collection to retrieve its value. Note: The server interprets any underscore (_) characters in |
| LOGON_USER | The Windows NT® account that the user is logged into. |
| PATH_INFO | Extra path information as given by the client. You can access scripts by using their virtual path and the PATH_INFO server variable. If this information comes from a URL it is decoded by the server before it is passed to the CGI script. |
| PATH_TRANSLATED | A translated version of PATH_INFO that takes the path and performs any necessary virtual-to-physical mapping. |
| QUERY_STRING | Query information stored in the string following the question mark (?) in the HTTP request. |
| REMOTE_ADDR | The IP address of the remote host making the request. |
| REMOTE_HOST | The name of the host making the request. If the server does not have this information, it will set REMOTE_ADDR and leave this empty. |
| REQUEST_METHOD | The method used to make the request. For HTTP, this is GET, HEAD, POST, and so on. |
| SCRIPT_MAP | Gives the base portion of the URL. |
| SCRIPT_NAME | A virtual path to the script being executed. This is used for self-referencing URLs. |
| SERVER_NAME | The server’s host name, DNS alias, or IP address as it would appear in self-referencing URLs. |
| SERVER_PORT | The port number to which the request was sent. |
| SERVER_PORT_SECURE | A string that contains either 0 or 1. If the request is being handled on the secure port, then this will be 1. Otherwise, it will be 0. |
| SERVER_PROTOCOL | The name and revision of the request information protocol. Format: protocol/revision. |
| SERVER_SOFTWARE | The name and version of the server software answering the request (and running the gateway). Format: name/version. |
| URL | Gives the base portion of the URL. |
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Sir
I am doing project in mobile communication.I need a java program for offline&online message transfer server to server communication program
Hi Lakshmi,
I want a clear idea of your project, are you creating your own messaging server or do you need a program to send messages using a messaging server.
LOGON_USER Not working in server.please help me