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POIs there any solid way to deal with Windows integrated (NTLM) authentication from an android app?
 

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  1. POIs there any solid way to deal with Windows integrated (NTLM) authentication from an android app?
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    <p>As the title states, we're looking for a way to access a .NET 3.5 Web service that is behind a Windows integrated (NTLM) authentication.</p> <p>We've searched the internets and this forum this entire week, and we've yet to find a solution to this problem. </p> <p>We've tried, DefaultHttpConnections, different variations of HttpPost, HttpGet etc.</p> <p>However we try to authenticate ourselves we run into these:</p> <pre><code> SSLHandshakeException </code></pre> <p>or</p> <pre><code> Authentication scheme ntlm not supported Authentication error: Unable to respond to any of these challenges: ntlm=WWW-Authenticate: NTLM, negotiate=WWW-Authenticate: Negotiate </code></pre> <p>The IIS authentication is set as follows: <img src="https://i.stack.imgur.com/UGJcc.jpg" alt="enter image description here"></p> <p>The page we're trying to access is an .aspx in a subfolder to the default site, and we dont have previliges and neither is it safe to change the authentication to the default site. </p> <p>I know many others out there in the internets has similar problems. </p> <p>And also, the app we're developing is not supposed to use web-views. </p> <p>Any constructive pointers about how to solve this will be highly appreciated. Thanks in advance. </p> <hr> <hr> <hr> <p><strong>UPDATE:</strong> We have now changed the service to perform both basic and ntlm authentication. </p> <p>When we run the code below to a localhost test-server we get the proper response, the localhost does not have any sort of authentication mechanism. The response as follows:</p> <pre><code>&lt;soap:Body&gt; &lt;FooResponse xmlns="uri:FlexAPI"&gt; &lt;FooResult&gt; &lt;typeFooBar&gt; &lt;FooNumber&gt;4545&lt;/FooNumber&gt; &lt;BarNumber&gt;1&lt;/BarNumber&gt; &lt;/typeFooBar&gt; &lt;/FooResult&gt; &lt;/FooResponse&gt; &lt;/soap:Body&gt; </code></pre> <p><strong>However</strong>, When we run the code below on our authenticated server we get this.</p> <p>org.xmlpull.v1.XmlPullParserException: expected: START_TAG {<a href="http://schemas.xmlsoap.org/soap/envelope/" rel="nofollow noreferrer">http://schemas.xmlsoap.org/soap/envelope/</a>}Envelope (position:START_TAG @2:44 in java.io.InputStreamReader@4054b398) </p> <pre><code> SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); request.addProperty("Foo", Bar.getText().toString()); request.addProperty("Foo", Bar.getText().toString()); request.addProperty("Foo", Bar() ); request.addProperty("Foo", Bar.getText().toString()); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); envelope.encodingStyle = "utf-8"; envelope.implicitTypes = false; String myUrlz= "http://" + myUrl.getText().toString() +"/Foo/Bar.asmx"; HttpTransportBasicAuth auth = new HttpTransportBasicAuth(myUrlz, "Foo", "Bar"); auth.debug = true; </code></pre> <hr> <pre><code>try { auth.call(SOAP_ACTION, envelope); // Fails on this line. System.out.println("Dump" + auth.responseDump); // all the other stuff..... } catch (FooException Bar) { // ¯\_(ツ)_/¯ } </code></pre> <p>So basically, we're recieveing html response instead of xml when accessing the protected service. And yes, the localhost service and the sharp service are exactly the same except for the authentication part.</p>
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