Lidgren.Network.NetUPnP.SOAPRequest C# (CSharp) Method

        private XmlDocument SOAPRequest(string url, string soap, string function)
        {
            string req = "<?xml version=\"1.0\"?>" +
            "<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">" +
            "<s:Body>" +
            soap +
            "</s:Body>" +
            "</s:Envelope>";
            WebRequest r = HttpWebRequest.Create(url);
            r.Method = "POST";
            byte[] b = System.Text.Encoding.UTF8.GetBytes(req);
            r.Headers.Add("SOAPACTION", "\"urn:schemas-upnp-org:service:WANIPConnection:1#" + function + "\"");
            r.ContentType = "text/xml; charset=\"utf-8\"";
            r.ContentLength = b.Length;
            r.GetRequestStream().Write(b, 0, b.Length);
            XmlDocument resp = new XmlDocument();
            WebResponse wres = r.GetResponse();
            Stream ress = wres.GetResponseStream();
            resp.Load(ress);
            return resp;
        }