Android :: Issues With Httppost - Authentication Challenge Is Empty
Nov 3, 2010
I'm developing an Android app which needs to perform an HTTPPost to get a token back. Then use that token for subsequent calls. When I perform the initial call to get the token, it throws an exception: org.apache.http.auth.MalformedChallengeException: Authentication challenge is empty
Here is my code:...............
I googled "Authentication challenge is empty", and one this website: http://fmpwizard-scala.posterous.com/using-apache-httpclient-authenti... he had a similar problem. He determined that his web server requires preemptive authentication. Which I believe ours does too. I tried implementing what he did, and still, no dice.
I've hard coded the token in other requests, and I am able to perform HTTPGet calls.
What is the Authentication Challenge that I'm missing?
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Aug 31, 2009
I am using HttpURLConnection to send a GET request to a server. Upon reading the response code, the Android implementation of HttpURLConnection.doRequestInternal() throws an exception:
"java.io.IOException: Received authentication challenge is null"
I don't even get what the error is trying to tell me. I write an OAuth param string to the Authorization header, but this works fine on other occasions. There is nothing peculiar about my request apart from that.
Any idea what this means, what is causing this and how to get around it? This works fine with Sun's Java implementation, so I guess it's a problem with Apache Harmony?
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Aug 31, 2009
I am trying to send a GET via Android's HttpURLConnection (which is an org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection), and upon receiving the response, an IOException is thrown:
in doRequestInternal(): "Received authentication challenge is null"
What does this error mean, and what is causing this? I am writing OAuth parameters to the Authorization header, but I do this on other occasions, too, without problems.
CODE:.............................
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Sep 22, 2010
For some reason the empty view (TextView in this case) always appears, even when the List is not empty. I thought the ListView would automatically detect when to show the empty view.How can I hook up the empty view properly?
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Oct 6, 2010
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Feb 1, 2010
Looking for a way to root droid and block all adult media. So far the only conclusion that I can arrive is to root then delete market and browser.
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Nov 24, 2010
I am trying to write something to an empty file on my apache server
CODE:.....................
The reponse returns "HTTP/1.1 200 OK" so it does find the file
I tried removing the file and it returned Error 404
I read apache's docs and looks like am doing it right "i think"
My problem is... the contents of the file do not get updated!
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Nov 9, 2010
I have the following php script, i want to pass parametrs from android to script and execute it.
CODE:.......................
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May 31, 2010
I am looking for an example of using a WebViewClient with shouldOverrideUrlLoading and using HttpPost. I need to display a web page, keep it within my layout boundaries so it can not launch a new browser and also use HttpPost to send data to the host.
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Jul 14, 2010
I am dealing with http post method on Android. I have successfully send simple string pairs using HttpClient and HttpPost class with the NameValuePair as entity. However now I want to send a simple array of bytes[]. Unfortunately the only entities I have found for the HttpPost class are the NameValuePair and FileEntity. However my byte[] is not from a file. Wirting it to a file and then sending by the FileEntity seems to be pointless and stupid. How can I send this array using default HttpClient and HttpPost class?
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Nov 12, 2010
Android: 2.1 SDK
I have a hello.php running on standard Linux host. (Ubuntu 9.01 with Apache2 web server)
In android I have a simple activity which sends HttpPost or HttpGet to the above hello.php with some parameters in URL. Irrespective of HttpPost or HttpGet in my php always $_GET has values, $_POST is always empty.
How do I know in PHP if it was a post , get,put or a delete? $_REQUEST['REQUEST_METHOD'] is also always empty in my php.
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Dec 17, 2009
I want to attach a file as HTTPResponse on Android 1.5. Also the contents of the file needs to be assigned to some variable.
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Feb 7, 2010
I'm creating an activity which needs to upload an image to a webservice using their api. I found that if i use UrlEncodedFormEntity and send the image data through that. the webservice doesn't receive that. ( at least it will not be able to read that .) In fact if i add some vars to send with the image data ( like name of the file, filesize ) they can be read from the webservice but the image data still doesn't appear if i try to read it serverside.
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Oct 26, 2010
I am trying to upload a image file to server and get back a JSON Object. But an IOException was thrown out. Following is my codes, can anybody have a look at them?
CODE:.....................
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Jan 3, 2010
I'm trying to use HttpPost to send data from an android device to a server. It works great with a Wifi connection, but I get the IOException "The target server failed to respond" with a Mobile connection (3G, Edge, etc.). It doesn't seem to be a timeout problem (I set it to 90s). The use of HttpGet works perfectly with both Wifi and Mobile connection... Any idea of where the problem could come from?
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Nov 19, 2010
I've written some code for my Android device to login to a web site over https and parse some data out of the resulting pages. An HttpGet happens first to get some info needed for login, then an HttpPost to do the actual login process. The code below works great in a Java project within Eclipse which has the following Jar files on the build path: httpcore-4.1-beta2.jar, httpclient-4.1-alpha2.jar, httpmime-4.1-alpha2.jar, commons-logging-1.1.1.jar.
public static MyBean gatherData(String username, String password) {
MyBean myBean = new MyBean();
try {
HttpResponse response = doHttpGet(URL_PAGE_LOGIN, null, null);
System.out.println("Got login page");
String content = EntityUtils.toString(response.getEntity());
String token = ContentParser.getToken(content);
String cookie = getCookie(response);.......................
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Nov 9, 2009
I'm working on an application that does an upload to a webserver, but struggling with the actual fileupload.. code:
CODE:............
Now, I have this working with what is no longer supported in MultipartEntity as follows:
CODE:...........
Problem is MultipartEntity is apparently no longer supported, although I found the libraries I can include in my project.
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Jun 22, 2010
I'm passing in parameters and returning string values, but all I receive is: org.apache.http.conn.EofSensorInputStream. Do I need to do something special in my web service to access the parameters being passed?
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May 8, 2010
I'm on Android 1.5, and my code is like this:
CODE:....................
After successfully executed these codes, the result is a stripped string. I've tried using browser to test the url+param, it works fine and got all data.
What's wrong with this code? Is there any parameters I need to specified?
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Feb 9, 2010
I want to use HttpPost over https/ssl. I get 'Not trusted server certificate' error. I've found a lot of posts, seems that many people have similar problems and I've found two suggestions: 1) Change server's certificate. Current certificate is self-signed as localhost.localdomain. Unfortunetly it's not my server and I cannot change the certificate. 2) Use HttpsUrlConnection instead of HttpClient. But I cannot use it because sometimes (when response's code is 401 or 403) I got IOException during getting response code or reading inputstream.
So I've found 3rd solution - use httpclient, when system throws excetpion 'not trusted server certificate' than display warning, inform user that certificate is not trusted and ask if he wants to add this one to the keystore (webbrowser works this way). But I've no idea how to get certificate from the server and add to keystore.
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Oct 14, 2010
How can I call a Webservice with a byte[] parameter? Tried using the namedvaluepairs, but they take strings only. I am not using the Ksoap2, we decided to use the HttpClient / HttpPost method.
Here is my code:
CODE:............
The Web Service:
CODE:.............................
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Dec 10, 2009
Is there someone troubled the same issue.
The code in run.
CODE:.............
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Oct 28, 2010
I have an image sitting on my SDcard (of type jpg) and I am trying to send the image via HttpPost to my servlet running on Apache Tomcat 7.0 So far I have google-ing the way to do this but I can't seem to find the perfect way. Do any of you might have some suggestion or solution to this problem?
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Jun 3, 2012
I'm having trouble getting my code working on ICS. It worked perfectly on my old DroidX, but I just got the new Galaxy Nexus and my code just returns null every time, as if the app isn't connecting to my servers or it's using a GET request when it should be using POST. Below is my code,
Code:
//---------------- AUTHENTICATE LOGIN ---------------------------
public static String authenticateLogin (String usr, String password, String updateDataNames, String updateDataUsernames, String updateDataPhone, String updateDataRadius, String updateDataChecked, String updateGPS)
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Mar 24, 2009
I am beating my head against a wall trying to figure out why I cannot get Authenticated on my server whilst using HttpUrlConnection. I need to post a file in a post method and it seems I cannot do so with the DefaultHttpClient and a regular HttpPost (unless I am completely missing something?). I can get DefaultHttpClient to authenticate just fine using setCredentials() but the same doesn't exist for HttpUrlConnection so I try to set through setRequestProperty: conn.setRequestProperty("Authorization", "Basic " + Base64EncodedUserNamePassword); to no avail.
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Mar 11, 2009
I am new on SSL programming. The Android app I am developing needs to open an SSL socket to a secure server which requires the client authentication. When running on the Emulator and trying to talk to a Server running on the host PC, the following Android code snippet always gives me a SocketException at the line, SSLSocket c = (SSLSocket) f.createSocket(hostName, 8888) :
private void openSslClient(String hostName) { try { KeyStore keyStore = KeyStore.getInstance (KeyStore.getDefaultType()); InputStream fis = this.getAssets().open("client.bks"); keyStore.load(fis, "clientjks".toCharArray());
KeyManagerFactory kmf = KeyManagerFactory.getInstance ("X509");
kmf.init(keyStore, "clientkey".toCharArray());
TrustManagerFactory tmf = TrustManagerFactory.getInstance ("X509");..............
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Dec 28, 2009
I am checking out the class org.apache.http.auth. Any more reference or example if anyone has?
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Jul 19, 2012
I am new to android and know very little about authentication. Ive been asked to build an rss feed app that will need to do Client side certificate authentication through SSL.
I've looked into the keychain api but how to use it and seen no tutorials of its usage.
I am a little lost as ive not done anything with authentication before. How to do mutual SSL client Authentication in android 4.0?
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Jul 21, 2010
I am currently writing the backend for a service which has 3 clients: browser, android native and iphone native. I am having a little trouble with coming up with an authentication system since I don't know what can really be done on the clients.
I am using django + twisted for the backend.
Basically, I am going to be writing RestfulAPIs to open up for the clients on both phones to call.
Now the real question is, how should I come up with an authentication system?
I have thought about using sessionids, this works very well with the browser and I can use django's integrated app for that.
However, I don't know if it's possible for both the iphone and android to obtain a unique sessionid on the handset. Should I write an API call to distribute unique sessionids?
if that's the case, is it possible for me to still use django's authentication system since a lot of the stuff here are customized? ( I am not even using a rdbms - I am sticking with mongodb, so I was on the verge of dropping django's authentication app ftm).
I have looked at foursquare's API and their basic auth method requires you to pass in user:password in every http request header. That adds 1 additional authentication each call which can kind of seem excessive.
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Oct 20, 2010
Are there any podcast players that allow authentication? I have the streamlink account for coast to coast am and they dont yet have an android app. I can download the MP# files of the shows every night but would much rather be able to just stream with podcast. I have a link to the RSS feed for said podcast but it requires a UN/PW. Can anyone suggest an app that will handle this? They also provide Real Player links and Windows media player links so if anyone knows how to make these work with the droid that would work as well.
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