title: How can I get cookie from httpclient?
body: <p>I used httppost to login a bbs.
  The httpclient can save cookie and other information automatically.
  I want to get cookie for httpclient and save it.
  So next time I can give the cookie to httpclient and I can visit the bbs again.
  So my question is how to get cookie from httpclient.
  and how to save the cookie.
  and how to set httpclient used the cookie.
  Thank you.</p>