[R] reading data from password protected url

[Steven R Corsi]

I am trying to retrieve data from a password protected database. I have 
login information and the proper url. When I make a request to the url, 
I get back some info, but need to read the "hidden header" information 
that has JSESSIONID and NCES_JSESSIONID. They need to be used to set 
cookies before sending off the actual url request that will result in 
the data transfer. Any help would be much appreciated.
Thanks
Steve