[How-to] D-Link DSL-2640S renew IP address, 1-click

[t-bon3]

Downloading from sites like rapidshare / hotfile / megaupload can be frustrating if you keep getting "download limit exceed, wait X hours" messages.

Using the router's web interface to disconnect and reconnect will renew the IP address and get around the limits but it's a lot of clicking!
So I decided to make a windows .bat script to renew the address with a single click.

I am using cURL to interact with the router web-interface from the command line. Download the windows version of cURL from http://www.paehl.com/open_source/?do...curl_721_3.zip

Extract curl.exe and the 2 .bat files from the attachment below into the same folder.
The 2 .bat files contain the following commands:

1. session.bat

@echo off
%~dp0curl.exe http://192.168.0.1/constatus.html -s -u "admin:sky" | find "var sessionKey"

N.B If you have changed the router default username or password then replace "admin:sky" with yours.

2. renew.bat

FOR /F "tokens=2 delims='" %%G IN ('"%~dp0session.bat"') DO set session=%%G
%~dp0curl.exe "http://192.168.0.1/wanpppconnect.cmd?action=stop&sessionKey=%session%"
choice /T 5 /N /D y
FOR /F "tokens=2 delims='" %%G IN ('"%~dp0session.bat"') DO set session=%%G
%~dp0curl.exe "http://192.168.0.1/wanpppconnect.cmd?action=start&sessionKey=%session%"

Running renew.bat will give you a new public IP address.

Linux version
renew.sh

#!/bin/bash
t=`curl http://192.168.0.1/constatus.html -s -u "admin:sky" | grep "var sessionKey" | cut -d"'" -f2`
curl "http://192.168.0.1/wanpppconnect.cmd?action=stop&sessionKey=$t"
sleep 5
t=`curl http://192.168.0.1/constatus.html -s -u "admin:sky" | grep "var sessionKey" | cut -d"'" -f2`
curl "http://192.168.0.1/wanpppconnect.cmd?action=start&sessionKey=$t"