Error “HTTP/1.1 401 Unauthorized” with basic authentication in android – EWS 2010

I refer to this link to request to the server. The problem is sometime (not always, about 20% – 30%, means sometime I can get successful response), I got the 401 error and server response basic authorization challenge expected, but not found.

Here is my code:

  • Unit test on Kotlin Extension Function on Android SDK Classes
  • CardView animation: raise and expand on click?
  • Does the V2 Maps Library require the ACCESS_NETWORK_STATE permission?
  • What theme attributes do I need to override to change the blue highlight color of my dialogs?
  • see android logcat without eclipse
  • Is it possible to get the phone's currently selected profile?
  •  HttpRequestInterceptor preemptiveAuth = new HttpRequestInterceptor()
        public void process(final HttpRequest request, final HttpContext context)
                throws HttpException, IOException
            AuthState authState = (AuthState) context
            CredentialsProvider credsProvider = (CredentialsProvider) context
            HttpHost targetHost = (HttpHost) context
            if (authState.getAuthScheme() == null)
                AuthScope authScope = new AuthScope(targetHost.getHostName(),
                Credentials creds = credsProvider.getCredentials(authScope);
                if (creds != null)
                    authState.setAuthScheme(new BasicScheme());

    Here is my authentication:

        HttpPost httpPost = new HttpPost(SERVER_AUTH_URL);
            httpPost.setHeader("Content-type", "text/xml; charset=utf-8");
        httpPost.setHeader("Keep-Alive", "300");
        httpPost.setHeader("Connection", "Keep-Alive");     
        StringEntity se = new StringEntity(myRequest, "UTF-8");
            //add preemptiveAuth
            client.addRequestInterceptor(preemptiveAuth, 0);
            //Set the proxy
        ProxySelectorRoutePlanner routePlanner = new ProxySelectorRoutePlanner(
        List<String> authPrefs = new ArrayList<String>();
        client.getParams().setParameter("http.auth.scheme-priority", authPrefs);
        CredentialsProvider credProvider = new BasicCredentialsProvider();                 
        // client.getParams().setParameter("http.auth.scheme-priority",
        // authPrefs);
                new NTCredentials(getUsername(), getPassword(),
                        "", getDomain()));
        Log.d(TAG, "repair excute");
        HttpResponse response = client.execute(httpPost);
        Log.d(TAG, "has excute");

    From the comment code, you can see I tried many ways, but the error wasn’t disappear. Here is logcat say:

     05-02 10:28:21.724: D/dalvikvm(1169): GC_FOR_MALLOC freed 11259 objects / 457352 bytes in 43ms
     05-02 10:28:22.384: D/MainActivity(1169): repair excute
     05-02 10:28:22.744: D/dalvikvm(1169): GC_FOR_MALLOC freed 11481 objects / 447264 bytes in 67ms
     05-02 10:28:22.894: D/dalvikvm(1169): GC_FOR_MALLOC freed 1078 objects / 83928 bytes in 76ms
     05-02 10:28:22.894: I/dalvikvm-heap(1169): Grow heap (frag case) to 3.833MB for 87396-byte allocation
     05-02 10:28:23.034: D/dalvikvm(1169): GC_FOR_MALLOC freed 58 objects / 3336 bytes in 143ms
     05-02 10:28:23.124: W/DefaultRequestDirector(1169): Authentication error: basic authorization challenge expected, but not found
     05-02 10:28:23.124: D/MainActivity(1169): has excute
     05-02 10:28:23.124: E/MainActivity(1169): response error: HTTP/1.1 401 Unauthorized

    So, please tell me where is my problem. Thanks in advance.
    Update: the target server is Exchange Web Service 2010. For some reason, I don’t want to use EWS API, I made my own xml request to connect to the server (this xml request works properly).

    And here is the response header from server
    When request failed:

    Server   Microsoft-IIS/7.5
    WWW-Authenticate   Negotiate
    WWW-Authenticate   NTLM
    X-Powered-By   ASP.NET
    Date   Fri, 25 May 2012 03:47:57 GMT
    Content-Length   0

    When request success the first time:

    Cache-Control   private
    Transfer-Encoding   chunked
    Content-Type   text/xml; charset=utf-8
    Server   Microsoft-IIS/7.5
    Set-Cookie   exchangecookie=1d9d9b1d21064035ad375c8aecde2168; expires=Sat, 25-May-2013     04:00:46 GMT; path=/; HttpOnly
    X-AspNet-Version   2.0.50727
    X-Powered-By   ASP.NET
    Date   Fri, 25 May 2012 04:00:45 GMT

    and the second time:

    Cache-Control   private
    Transfer-Encoding   chunked
    Content-Type   text/xml; charset=utf-8
    Server   Microsoft-IIS/7.5
    X-EwsPerformanceData   RpcC=4;RpcL=0;LdapC=0;LdapL=0;
    X-AspNet-Version   2.0.50727
    X-Powered-By   ASP.NET
    Date   Fri, 25 May 2012 04:00:47 GMT

    The cookie is my problem, isn’t it?

    Related posts:

    Is there a unique Android device ID?
    Can I link a person with both twitter and facebook on parse?
    How to Use Adapter While Filling Layouts
    How to fire onListItemClick in Listactivity with buttons in list?
    Android MediaCodec AAC encoder
    change buffer size on MediaPlayer
  • Error:Internal error: (java.lang.NoSuchMethodError) affecting all my projects
  • Live character count for EditText
  • What commands does Android Studio's `gradle-aware make` perform
  • Android studio where is file?
  • Converting a view to Bitmap without displaying it in Android?
  • How can I access stored values of a Bean from inside another Class
  • One Solution collect form web for “Error “HTTP/1.1 401 Unauthorized” with basic authentication in android – EWS 2010”

    I was struggling with Android HTTP basic last week. I have tried maybe 3 or 4 different ways of doing it and always I found some problem. Right now the only way I managed to make it work was the simplest way.

     UsernamePasswordCredentials credentials = new UsernamePasswordCredentials(user, pass);
     Header header = new BasicScheme().authenticate(credentials, mHttpRequest);

    That worked for me with AndroidHttpClient.


    This is my full source code

    It’s based on

    Android Babe is a Google Android Fan, All about Android Phones, Android Wear, Android Dev and Android Games Apps and so on.