title: Max size of post data in http
body: <p>Is there any limit in terms of amount of data that can be sent with HTTP POST ?</p>
  
  <p>I have seen in some emails there is limit of 25 MB or 20 MB for attachments..,but I think they are imposed by the server or application...</p>
  
  <p>In terms of plain HTTP is there any limit....</p>
  
  <p>Also, is there any limit in terms of size of value of a field as well?</p>
  
  <p>And why large values in hidden fields are not a good thing, or is it?</p>