Connecting to a secure gateway from Java in Bluemix

Question

I'm trying to connect to a web server (http/port:80) via a secure gateway (DataPower) from my Bluemix account. I have set everything up and I can see the destination etc. is enabled in my dashboard. I am using Java to connect to the secure gateway but I must be missing something since I keep getting a 403 returned from the gateway client.

I have added:

connection.setRequestProperty("Authorization", "Bearer " + token);

But it still fails with a 403. I'm assuming that I also need to supply the Gateway Id... but cannot find any docs or Java examples...

Can you share the url you are trying to hit along with the above request properties? — doktoroblivion
James, this is a bad website to test against. If you fire up firebug you will notice it gives the same error, "NetworkError: 403 Forbidden - dpev755.innovate.ibm.com", along with a redirected webpage. I would try something else, like google. I will share my answer below. — doktoroblivion

doktoroblivion doktoroblivion · Accepted Answer · 2015-08-04T01:05:51

You can do this easily by created a destination to a good website (webpage) like www.google.com/80. I did just that and then wrote some code below:

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

public class test {
    /**
     * The main method.
     *
     * @param args - String[] - The command line arguments.
     */
    public static void main(String[] args) {

        String url = args[0];
//      String query = args[1];
//      String token = args[2];
        String charset = "UTF-8";

        BufferedReader br = null;

        try {
            // Create a trust manager that does not validate certificate chains
            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) {
                    }
                }
            };

            // Install the all-trusting trust manager
            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);

            URL _url = new URL(url);
//          URL _url = new URL(url + "?" + query);
            System.out.println("URL: " + _url);
//          HttpsURLConnection connection = (HttpsURLConnection)_url.openConnection();
            HttpURLConnection connection = (HttpURLConnection)_url.openConnection();
//          connection.setRequestMethod("GET");
//          connection.setRequestProperty("Authorization", "Bearer " + token);
            br = new BufferedReader(new InputStreamReader(connection.getInputStream()));

            System.out.println("****** Contents ********");            

            String input;

                while ((input = br.readLine()) != null){
                    System.out.println("MSG: " + input);
                }
                br.close();
        } catch (Exception e) {
            e.printStackTrace(System.err);
        }
    }
}

Please note the commented stuff out applies to HTTPS connections you may want to try (that works too). Then run the program to get results for google website first page, as shown below.

$ java -cp . test http://localhost:15017
URL: http://localhost:15017
****** Contents ********
MSG: <!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="en"><head><meta content="Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what you're looking for." name="description"><meta content="noodp" name="robots"><meta content="/images/google_favicon_128.png" itemprop="image"><title>Google</title><script>(function(){window.google={kEI:'EQ_AVZy-OIjz-AHlrYHgBA',kEXPI:'3700264,3700372,4029571,4029815,4031109,4032235,4032500,4032677,4033307,4033344,4033367,4034882,4036527,4036848,4037333,4037457,4037569,4038012,4038399,4039386,4039462,4039879,4039905,4039936,4040020,4040028,4040112,4040135,4040849,4040864,4040974,4040977,4040983,4041078,4041159,4041304,4041440,4041644,4041972,4042052,4042383,4042695,4042833,4042835,4043134,8300096,8300185,8300199,8300203,8300214,8500394,8501261,8501295,8501407,8501489,10200083,10201125,10201250,10201339',authuser:0,kscs:'c9c918f0_10'};google.kHL='en';})();(function(){google.lc=[];google.li=0;google.getEI=function(a){for(var b;a&&(!a.getAttribute||!(b=a.getAttribute("eid")));)a=a.parentNode;return b||google.kEI};google.getLEI=function(a){for(var b=null;a&&(!a.getAttribute||!(b=a.getAttribute("leid")));)a=a.parentNode;return b};google.https=function(){return"https:"==window.location.protocol};google.ml=function(){return null};google.time=function(){return(new Date).getTime()};google.log=function(a,b,d,e,g){a=google.logUrl(a,b,d,e,g);if(""!=a){b=new Image;var c=google.lc,f=google.li;c[f]=b;b.onerror=b.onload=b.onabort=function(){delete c[f]};window.google&&window.google.vel&&window.google.vel.lu&&window.google.vel.lu(a);b.src=a;google.li=f+1}};google.logUrl=function(a,b,d,e,g){var c="",f=google.ls||"";if(!d&&-1==b.search("&ei=")){var h=google.getEI(e),c="&ei="+h;-1==b.search("&lei=")&&((e=google.getLEI(e))?c+="&lei="+e:h!=google.kEI&&(c+="&lei="+google.kEI))}a=d||"/"+(g||"gen_204")+"?atyp=i&ct="+a+"&cad="+b+c+f+"&zx="+google.time();/^http:/i.test(a)&&google.https()&&(google.ml(Error("a"),!1,{src:a,glmm:1}),a="");return a};google.y={};google.x=function(a,b){google.y[a.id]=[a,b];return!1};google.load=function(a,b,d){google.x({id:a+k++},function(){google.load(a,b,d)})};var k=0;})();google.kCSI={};var _gjwl=location;function _gjuc(){var a=_gjwl.href.indexOf("#");if(0<=a&&(a=_gjwl.href.substring(a),0<a.indexOf("&q=")||0<=a.indexOf("#q="))&&(a=a.substring(1),-1==a.indexOf("#"))){for(var d=0;d<a.length;){var b=d;"&"==a.charAt(b)&&++b;var c=a.indexOf("&",b);-1==c&&(c=a.length);b=a.substring(b,c);if(0==b.indexOf("fp="))a=a.substring(0,d)+a.substring(c,a.length),c=d;else if("cad=h"==b)return 0;d=c}_gjwl.href="/search?"+a+"&cad=h";return 1}return 0}
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Connecting to a secure gateway from Java in Bluemix

1 Answers