Question

I have a site name http://www.goo.com and i used to save cookie without declaring domain name when creating the cookie.
Now, i want to add sub domain foo.goo.com
I save the cookie in the domain and not in the sub domain.
There are 2 problems:

1. I want to delete the old cookie.
   I tried to do ‘cookie.setMaxAge(0)’ already and the problem is that in Firefox and chrome it do not work. it work only in IE.
   why? and what i can do about it?

2. When i do

   Cookie[] cookie = request.getCookies();
   if (cookie != null) {
      for (int i = 0; i < cookie .length; i++) {
          cookie[i].getDomain();   //here i get null.why?
      }
   }
   

Why i get null in the getDomain() line?

Edit:

i tried to add this line:

response.setContentType("text/html");

to send the content type.

I also tried to send the cookie through the response.

Someone have another idea, for the 2 problems the presents here?

Answer 1

1. Answered here: How do you remove a Cookie in a Java Servlet (you need to send a text/html content type)

2. When a client sends cookies to the server, it only sends the name/value. The other fields are only available when setting the cookie.