You can add either of these elements to the Thread Group or the HTTP Request.
If you have more than one HTTP Request that needs authorizations or cookies, then add the elements to the Thread Group.
This allows the use of optional parameters defined by variables.
If your values contain characters such as the following then encoding is usually required.: request and there is a single file whose 'Parameter name' attribute (below) is omitted, then the file is sent as the entire body of the request, i.e. Instead, the 32 character MD5 hash of the data is calculated and stored instead.
This is intended for testing large amounts of data.
It also lets you control whether or not JMeter parses HTML files for images and other embedded resources and sends HTTP requests to retrieve them.
The following types of embedded resource are retrieved: for details.
The JMeter host must have multiple IP addresses (i.e. The value can be a host name, IP address, or a network interface device such as ", it will not get the correct cookies.