HttpURLConnection via GET returns ECONNREFUSED but why?

Question

Using HttpURLConnection with a GET request method I can connect to my REST api with "https://www.myexample.com/login?u=test&p=test123" but not "http://dev.myexample.com/login?u=test&p=test123".

I can see the "broken" URL in the default android browser on the same device and it is giving me the expected XML response so I'm not sure why I'm receiving ECONNREFUSED inside my app. I want to remedy this issue myself but I'm not even sure what the issue is! Any ideas?

04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err: java.net.ConnectException: failed to connect to dev.lakewoodchurch.com/92.242.xx.xx (port 443): connect failed: ECONNREFUSED (Connection refused)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at libcore.io.IoBridge.connect(IoBridge.java:124)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:183)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:456)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.net.Socket.connect(Socket.java:882)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at com.android.okhttp.internal.Platform.connectSocket(Platform.java:139)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at com.android.okhttp.Connection.connect(Connection.java:148)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:276)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:106)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at com.android.okhttp.internal.http.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:25)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at myexample.android.phone.MyApp.XMLParser.getXMLFromURLGet(XMLParser.java:185)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at myexample.android.phone.MyApp.Login$1$1.run(Login.java:133)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at myexample.android.phone.MyApp.GenericAsyncTask.doInBackground(GenericAsyncTask.java:15)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at myexample.android.phone.MyApp.GenericAsyncTask.doInBackground(GenericAsyncTask.java:5)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:288)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:237)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.lang.Thread.run(Thread.java:818)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err: Caused by: android.system.ErrnoException: connect failed: ECONNREFUSED (Connection refused)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at libcore.io.Posix.connect(Native Method)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:111)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at libcore.io.IoBridge.connectErrno(IoBridge.java:137)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at libcore.io.IoBridge.connect(IoBridge.java:122)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:   ... 21 more
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.StringBuilder.toString()' on a null object reference
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at myexample.android.phone.MyApp.XMLParser.getXMLFromURLGet(XMLParser.java:228)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at myexample.android.phone.MyApp.Login$1$1.run(Login.java:133)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at myexample.android.phone.MyApp.GenericAsyncTask.doInBackground(GenericAsyncTask.java:15)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at myexample.android.phone.MyApp.GenericAsyncTask.doInBackground(GenericAsyncTask.java:5)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:288)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:237)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
04-05 18:41:15.890 2158-13245/myexample.android.phone.MyApp W/System.err:     at java.lang.Thread.run(Thread.java:818)

In case you want to see this:

public static String getXMLFromURLGet(String url, HashMap<String,String> params) {
    URI uri = XMLParser.encodeUrl(url);

    String xml = null;
    URL link;
    BufferedReader reader = null;
    StringBuilder stringBuilder=null;

    try {
        // convert params to string
        if(params != null && params.size() > 0) {
            String op = "?";
            for(HashMap.Entry<String,String> entry : params.entrySet()) {
                url += op + entry.getKey() + "=" + URLEncoder.encode(entry.getValue(), "UTF-8");
                op = "&";
            }
        }

        Log.i("XMLParser", "Get URL: " + url);
        link = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) link.openConnection();
        connection.setRequestMethod("GET");

        XMLParser.loadCookiesToConnection(connection);
        connection.connect();

        if(LCHApplication.DEBUG) {
            System.out.println("response code: " + connection.getResponseCode());
            Map<String, List<String>> map = connection.getHeaderFields();
            System.out.println("Printing Response Header...\n");
            for (Map.Entry<String, List<String>> entry : map.entrySet()) {
                System.out.println("Key : " + entry.getKey()
                        + " ,Value : " + entry.getValue());
            }
        }

        XMLParser.storeCookiesFromConnection(connection);

        InputStream is = connection.getInputStream();
        InputStreamReader ir = new InputStreamReader(is);
        reader = new BufferedReader(ir);
        stringBuilder = new StringBuilder();

        String line = null;
        while ((line = reader.readLine()) != null)
        {
            stringBuilder.append(line + "\r");
        }
    } catch (Exception e) {
        e.printStackTrace();
        Crashlytics.logException(e);
    } finally {
        if (reader != null)
        {
            try
            {
                reader.close();
            }
            catch (IOException ioe)
            {
                ioe.printStackTrace();
                Crashlytics.logException(ioe);
            }
        }
    }

    try {
        xml = stringBuilder.toString();
    } catch (Exception e) {
        e.printStackTrace();
        Crashlytics.logException(e);

        try {
            LCHApplication.instance.dialogServerError(MainContainer.instance.getContext());
        } catch(Exception e1) {}
    }
    return xml;

}

score 0 · Accepted Answer · answered Apr 07 '16 at 13:54

HttpUrlConnection is what is making the connection. I noticed that port 443 is being used. This is a problem because I specified an http:// address.

For the 6.0 Android updates we had an override to change all http requests to https. I should have know from the failure line that something was up.

Hopefully someone can benefit from my oversight.

HttpURLConnection via GET returns ECONNREFUSED but why?

1 Answers1