Request:
GET /ws/ws.asmx/DecryptText?text=string&key=string HTTP/1.1
Host: test.test.com

Response:
HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<string xmlns="test.test.com/ws/test/">string</string>