Watch the http request a programm sends

Question

Hello
I want to write a SOAP-Request to a HttpURLConnection Object.
public static void main(String[] args)
          InputStream is;
          String[] mess = {"<?xml version=\"1.0\" encoding=\"utf-8\"?>",
                    "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">",
                    "<soap:Body>",
                    "<GetSlideData xmlns=\"http://tempuri.org/\" />",
                    "</soap:Body>",
                    "</soap:Envelope>"};
          try {
               URL url = new URL("http://localhost:4351/SlideService/Service.asmx?op=GetSlideData");
               HttpURLConnection urlcon = (HttpURLConnection)url.openConnection();
               urlcon.setRequestMethod("POST");
               urlcon.setDoOutput( true );
               urlcon.connect();
               OutputStream out = urlcon.getOutputStream();
               for(int i = 0; i < mess.length; i++)
                    for(int j = 0; j < mess.length(); j++)
                         out.write((int)mess[i].charAt(j));
               out.close();
               urlcon.toString();
               is = urlcon.getInputStream();
               System.out.println("ContentType: " + urlcon.getContentType());
catch (Exception e)
               e.printStackTrace();
When I start this program i get a:
Server returned HTTP response code: 415 for URL: http://localhost:4351/SlideService/Service.asmx?op=GetSlideData
The request should look like this:POST /SlideService/Service.asmx HTTP/1.1
Host: localhost
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://tempuri.org/GetSlideData"
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<GetSlideData xmlns="http://tempuri.org/" />
</soap:Body>
</soap:Envelope>
I'm looking for a tool or a way to see the http request, that the application does send.
Does someone have an idea how to do this?
Kind regards,
ClaudeMichelle                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

Using netcat to listen on that port, receive the connection and log the output
$ nc -l 4351 > output.log &the output is
POST /SlideService/Service.asmx?op=GetSlideData HTTP/1.1
User-Agent: Java/1.6.0_16
Host: localhost:4351
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-type: application/x-www-form-urlencoded
Content-Length: 290
<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><GetSlideData xmlns="http://tempuri.org/" /></soap:Body></soap:Envelope>maybe you wanted
                String[] mess = {"<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\n",
                                "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">\r\n",
                                "\t<soap:Body>\r\n",
                                "\t\t<GetSlideData xmlns=\"http://tempuri.org/\" />\r\n",
                                "\t</soap:Body>\r\n",
                                "</soap:Envelope>\r\n"};which produces
POST /SlideService/Service.asmx?op=GetSlideData HTTP/1.1
User-Agent: Java/1.6.0_16
Host: localhost:4351
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-type: application/x-www-form-urlencoded
Content-Length: 306
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
        <soap:Body>
                <GetSlideData xmlns="http://tempuri.org/" />
        </soap:Body>
</soap:Envelope>Not that cr-nl should matter in the request body.