SOAP message to webservice - HTTP response code: 4

Question

I try to send a SOAP message in an XML file to a webservice and than grab the binary output and decode it. Endpoint uses HTTPS protocol, so I used TrustManager in my code to avoid PKIX problems. You can see my code here:

import javax.net.ssl.*;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.security.cert.X509Certificate;

public class Main{
    public static void sendSoapRequest() throws Exception {
        String SOAPUrl = "URL HERE";
        String xmlFile2Send = ".\\src\\request.xml";
        String responseFileName = ".\\src\\response.xml";
        String inputLine;

        TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
            public java.security.cert.X509Certificate[] getAcceptedIssuers() { return null; }
            public void checkClientTrusted(X509Certificate[] certs, String authType) { }
            public void checkServerTrusted(X509Certificate[] certs, String authType) { }

        } };

        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustAllCerts, new java.security.SecureRandom());
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());

        // Create all-trusting host name verifier
        HostnameVerifier allHostsValid = new HostnameVerifier() {
            public boolean verify(String hostname, SSLSession session) { return true; }
        };
        // Install the all-trusting host verifier
        HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);

        // Create the connection with http
        URL url = new URL(SOAPUrl);
        URLConnection connection = url.openConnection();
        HttpURLConnection httpConn = (HttpURLConnection) connection;
        FileInputStream fin = new FileInputStream(xmlFile2Send);
        ByteArrayOutputStream bout = new ByteArrayOutputStream();

        copy(fin, bout);
        fin.close();

        byte[] b = bout.toByteArray();
        StringBuffer buf=new StringBuffer();
        String s=new String(b);

        b=s.getBytes();

        // Set the appropriate HTTP parameters.
        httpConn.setRequestProperty("Content-Length", String.valueOf(b.length));
        httpConn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
        httpConn.setRequestProperty("SOAPAction", "");
        httpConn.setRequestMethod("POST");
        httpConn.setDoOutput(true);

        OutputStream out = httpConn.getOutputStream();
        out.write(b);
        out.close();

        // Read the response.
        httpConn.connect();
        System.out.println("http connection status :"+ httpConn.getResponseMessage());
        InputStreamReader isr = new InputStreamReader(httpConn.getInputStream());
        BufferedReader in = new BufferedReader(isr);

        while ((inputLine = in.readLine()) != null)
            System.out.println(inputLine);
        FileOutputStream fos=new FileOutputStream(responseFileName);
        copy(httpConn.getInputStream(),fos);
        in.close();
    }

    public static void copy(InputStream in, OutputStream out) throws IOException {

        synchronized (in) {
            synchronized (out) {
                byte[] buffer = new byte[256];
                while (true) {
                    int bytesRead = in.read(buffer);
                    if (bytesRead == -1)
                        break;
                    out.write(buffer, 0, bytesRead);
                }
            }
        }
    }

    public static void main(String args[]) throws Exception {
        sendSoapRequest();
    }
}

I get following error code, when I execute this.

Exception in thread "main" java.io.IOException: Server returned HTTP response code: 403 for URL

Answer 1

Wonder if your SOAP request contains any kind of authentication information in headers like SAML. One option is, in your above code where you read the file and send the data to server, instead of sending it to server you dump it to another file. Dump that byteoutputstream. Then copy text from that file and put it in SOAP UI and try running that. Does that work?

Answer 2

403 error might be related to your soap request headers being sent to the server. All Hosts valid will allow your Java App to trust the SSL Cert for the URL. Check if your server is expecting soap header with username/password. If you have access to this server, you can check through the web server logs on where your request is failing. Error code points to to missing Soap Header particularly Soap Headers with username and password

Answer 3

Your implementation is alright, the problem is related to your Content-Type header, in fact.

The value text/xml; charset=utf-8 is the default Content-Type of SOAP 1.1, which is probably not the version of yours. SOAP 1.2 expects a header of type application/soap+xml; charset=utf-8, so changing your line of code to this one below is gonna make it working:

httpConn.setRequestProperty("Content-Type", "application/soap+xml; charset=utf-8");

---

In SoapUI, it's possible to check the headers calling the request and going to the Headers tab on the bottom of the window:

Then, you can compare the differences between your application configs and the SoapUI ones.

Answer 4

In a similar situation we have been some time before, and as long as trying TrustManager didn't work as expected, we managed to overcome this problem by installing the certificate from server to JVM's keystore (JVM used to run the application). More information about how to do it you can find in several posts, like How to import a .cer certificate into a java keystore?

I am aware that it is a try to force JVM to accept SSL certificates, and this functionality would be better to live in application context, but as long as we were building a web application which ran in specific application servers, the implemented solution was an accepted one.