filename in "u:\prochttp\Testware\in";
filename out "u:\prochttp\Testware\out.txt";
data _null_;
   file in;
   input;
   put _infile_;
   datalines4;

server=localhost&action=list&type=store&user=your-user-name&password
=your-password&details=true&x=1
;;;;

 proc http in=in out=out url="http://localhost.com/rsm/rstool"
     method="post"
      ct="application/x-www-form-urlencoded";
run;