Develop Reference

How to fix "400 bad request" with uploading file on android with java HttpClient?

I need to upload a file to server. If i use the "curl -i -F filedata=#"PATH TO FILE" http://█.199.166.14/audiostream " it return a 200 OK code (Or may be this command incorrect) .
But when I use java function
public String send()
{
try {
url = "http://█.199.166.14/audiostream";
File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), "test.pcm");
try {
Log.d("transmission", "started");
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
ResponseHandler Rh = new BasicResponseHandler();
InputStreamEntity reqEntity = new InputStreamEntity(new FileInputStream(file), -1);
reqEntity.setContentType("binary/octet-stream");
reqEntity.setChunked(true); // Send in multiple parts if needed
httppost.setEntity(reqEntity);
HttpResponse response = httpclient.execute(httppost);
response.getEntity().getContentLength();
StringBuilder sb = new StringBuilder();
try {
BufferedReader reader =
new BufferedReader(new InputStreamReader(response.getEntity().getContent()), 65728);
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
}
catch (IOException e) { e.printStackTrace(); }
catch (Exception e) { e.printStackTrace(); }
Log.d("Response", sb.toString());
Log.d("Response", "StatusLine : " + response.getStatusLine() + " Entity: " + response.getEntity()+ " Locate: " + response.getLocale() + " " + Rh);
return sb.toString();
} catch (Exception e) {
// show error
Log.d ("Error", e.toString());
return e.toString();
}
}
catch (Exception e)
{
Log.d ("Error", e.toString());
return e.toString();
}
}
It's return 400 Bad request.
I'm also not sure that server proceed correctly my attempts to upload this file, but I can't check it.

From the error received its likely a bad formatted HTTP query. If audiostream is a php, write the full link.
Also it seems that there might be a wrong/bad encoded char at "http://█.199.166.14/audiostream, the link should be http://(IP or DNS)/(rest of URL)(the URI)
You should erase the link, then manually writte it again.
If those didnt fix the issue, its also possible that the Server (or its path equipment) might be blocking you. Check from the Access Log and the security rules of its accesses, that you are not blocked (some routers may block users from performing repeated querys as a sort of anti "Denial of Service" measure)

How does RequestFactory know what Android user is logged in

I have an Android app that successfully uses RequestFactory to manipulate Entities in AppEngine Datastore.
In my AppEngine service, I want to use
UserService userService = UserServiceFactory.getUserService();
User user = userService.getCurrentUser();
to get information about the current Android user, but getCurrentUser() returns null.
How does my Android app let RequestFactory know who is logged in?
This question applies to dev mode and production mode.
Thanks.

There is a not-so-obvious answer found in the old AppEngine Connected Android Eclipse wizard code, which is no longer available in the GPE (see Util.java of this wizard generated code). It includes the following:
T requestFactory = RequestFactorySource.create(factoryClass);
requestFactory.initialize(new SimpleEventBus(),
new AndroidRequestTransport(uri, authCookie));
with
public AndroidRequestTransport(URI uri, String cookie) {
this.uri = uri;
this.cookie = cookie;
}
public void send(String payload, TransportReceiver receiver) {
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost();
post.setHeader("Content-Type", "application/json;charset=UTF-8");
post.setHeader("Cookie", cookie);
post.setURI(uri);
Throwable ex;
try {
post.setEntity(new StringEntity(payload, "UTF-8"));
HttpResponse response = client.execute(post);
if (200 == response.getStatusLine().getStatusCode()) {
String contents = readStreamAsString(response.getEntity().getContent());
receiver.onTransportSuccess(contents);
} else {
receiver.onTransportFailure(new ServerFailure(response.getStatusLine()
.getReasonPhrase()));
}
return;
} catch (UnsupportedEncodingException e) {
ex = e;
} catch (ClientProtocolException e) {
ex = e;
} catch (IOException e) {
ex = e;
}
receiver.onTransportFailure(new ServerFailure(ex.getMessage()));
}
Using that code from the GPE wizard did the trick for me.

Android SSL Certificate Authentication (with the Android KeyChain API) to a WCF Service

I have big problems with getting the certificates running under android.
I have an android client which connects to a WCF-Service.
I think the problem is, that the certificates are not transfered. I get an error message:
403 forbidden (in the response). I really hope you can help me.
=> in my android client
In internet explorer, it works just fine => status 200
I found this article:
http://android-developers.blogspot.de/2012/03/unifying-key-store-access-in-ics.html
"A common use of the private key is for SSL client authentication. This can be implemented by using an HttpsURLConnection with a custom X509KeyManager that returns the PrivateKey retrieved from the KeyChain API. The open source Email application for ICS uses KeyChain with an X509ExtendedKeyManager. To learn more, have a look at the source code (in SSLUtils.java)."
I have checked out the SSLUtils class and I am trying to use it.
Here is some code:
private void setHttpsAdvanced() {
HostAuth ht = new HostAuth();
ht.mPort = 443;
ht.mClientCertAlias = "jensZert";
HttpParams params = getHttpParams();
MyThreadSafeClientConnManager ccm = MyThreadSafeClientConnManager
.newInstance(params, true, 443);
try {
MyThreadSafeClientConnManager.makeScheme(true, false,
ht.mClientCertAlias);
ccm.registerClientCert(getApplicationContext(), ht);
// checkCertificate(ht.mClientCertAlias);
} catch (CertificateException e) {
Log.d(TAG, e.getMessage());
e.printStackTrace();
}
this.httpclient = new DefaultHttpClient(ccm, params);
connectionInfo = this.getConnectionInfo();
this.url = String.format("%1$s://%2$s/%3$s/%4$s",
connectionInfo.Protocol, connectionInfo.ServerName,
connectionInfo.WebserviceName, connectionInfo.Path);
httpGet = new HttpGet(url);
}
private String callTheWebserviceCertificate() {
this.setupClient();
String result = "";
HttpResponse response = null;
try {
response = (HttpResponse) this.httpclient.execute(httpGet);
result = EntityUtils.toString(response.getEntity());
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
result = e.getMessage() + "\n";
for (StackTraceElement el : e.getStackTrace()) {
result += el.toString() + "\n";
}
Log.d(TAG, result);
}
return result;
}
greetings,
jens

KSoap2 outOfMemoryError while doing a call Android

I try to get some Data from a WebService using KSoap2.
The WebService responses a very large XML-File so while I'm doing the HttpTransportSE.call() I get an ouOfMemory Exception.
Is it possible to get a snipped response from a Soap Webservice?
Or is there a way to write it directly in a file on the device?
This is my Class to get the Data:
public static SoapObject GetItemData()
{
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME_ITEM_DATA);
request.addProperty("Company", company);
request.addProperty("SerialNumber", serialId);
itemEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
itemEnvelope.dotNet = true;
itemEnvelope.setOutputSoapObject(request);
AndroidHttpTransportSE androidHttpTransport = new AndroidHttpTransportSE(URL);
androidHttpTransport.debug = true;
Log.d("==ITEM_URL==", URL);
try
{
androidHttpTransport.call(SOAP_ACTION_ITEM_DATA, itemEnvelope);
Log.d("==ItemVerbindung==", "Verbindung aufgebaut");
}
catch (Exception e)
{
e.printStackTrace();
Log.d("==ItemVerbindung==", "HTTPCALL nicht ausgeführt");
}
try
{
itemResult = (SoapObject)itemEnvelope.getResponse();
Log.d("==ItemResponse==", "PropertyCount: "+itemResult.getPropertyCount());
}
catch(ClassCastException e)
{
itemResult = (SoapObject)itemEnvelope.bodyIn;
}
catch (SoapFault e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
if(itemResult != null)
{
return itemResult;
}
return null;
}
I have also coppied the HttpTransportSE.java and manipulated it to write directly in a file. But there I get an unvalid Token error.

I remember to have seen this problem before:
Two Recommendations:
1) Save your SOAP XML stream directly to disk as you download it. Don't store it in memory.
2) Parse it using a SAX-style parser, where you don't load the whole DOM in memory, but rather parse it in chunks.
EDIT: Check this -> Very large SOAP response - Android- out of memory error

I found a solution without using the KSoap2 Library.
Here is the code:
try {
java.net.URL url = new java.net.URL(URL);
HttpURLConnection rc = (HttpURLConnection) url.openConnection();
rc.setRequestMethod("POST");
rc.setDoOutput(true);
rc.setDoInput(true);
rc.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
rc.addRequestProperty("User-Agent", HTTP.USER_AGENT);
rc.setRequestProperty("SOAPAction", SOAP_ACTION_ITEM_DATA);
OutputStream out = rc.getOutputStream();
Writer wout;
wout = new OutputStreamWriter(out);
wout.write("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
wout.write("<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">");
wout.write("<soap:Body>");
wout.write("<GetItemData2 xmlns=\"http://localhost/HSWebBL\">");
wout.write("<Company>" + company + "</Company>");
wout.write("<SerialNumber>" + serialId + "</SerialNumber>");
wout.write("</GetItemData2>");
wout.write("</soap:Body>");
wout.write("</soap:Envelope>");
wout.flush();
wout.close();
rc.connect();
Log.d("==CLIENT==", "responsecode: " + rc.getResponseCode() + " " + rc.getResponseMessage());
InputStream in = new BufferedInputStream(rc.getInputStream(), BUFFER_SIZE);
} catch (ProtocolException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
I use a SAXParser to parse the InputStream.
In that way I don't get an outOfMemoryException and no parsing error anymore.

Problems running deployed apps on Google AppEngine

I have written a web application to run on Google AppEngine using the Restlet framework, communicating using json with web clients. Those work as expected. However, one specific resource written to provide response to an Android client doesn't work when accessed through Android. However, it does work when accessed through a web browser (I do not send the request parameters from the browser and thus get a 400 which is ok in this case).
This code works when running on the DevAppServer:
public class PlayResource extends ServerResource {
private final float SCOREBASE = 1000.0F;
#Get
#Post
public JsonRepresentation play() {
try {
JsonRepresentation rep = new JsonRepresentation(getRequestEntity());
JSONObject inputJson = rep.getJsonObject();
JSONObject outputJson = new JSONObject();
String country = inputJson.optString("country");
outputJson.put("country", doSomething("country",country));
......
......
return new JsonRepresentation(outputJson);
} catch (IOException e) {
try {
setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
return new JsonRepresentation(
new JSONObject()
.put(Messages.TYPE_ERROR, Messages.BAD_REQUEST));
} catch (JSONException e2) {
setStatus(Status.SERVER_ERROR_INTERNAL);
return null;
}
} catch (JSONException e) {
try {
setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
return new JsonRepresentation(
new JSONObject()
.put(Messages.TYPE_ERROR, Messages.BAD_FORMAT));
} catch (JSONException e2) {
setStatus(Status.SERVER_ERROR_INTERNAL);
return null;
}
}
}
}
and the client Android device is running this code:
Client client = new Client(Protocol.HTTP);
try {
JsonRepresentation requestJSON = new JsonRepresentation(new JSONObject()
.put("country", country.trim())
);
Request req = new Request(Method.GET,"http://****.appspot.com/resource/play",requestJSON);
Response resp = client.handle(req);
String res = resp.getEntity().getText();
JSONObject resultJSON = new JSONObject(res);
Running this request just hangs the Android client, the server doesn't write any log messages whatsoever suggesting the request doesn't arrive there.

It seems that it's more a Appengine/Java issue than an android issue, but...let's try something else:
instead of using Client and the stuff u are using, first just try to see what the server responds to the simplest connection (as you do in a web browser):
URL url;
try {
url = new URL("http://yourappid.appspot.com/resource/play");
String content = (String) url.getContent();
System.out.println(content);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
If it works and you get your expeted 400, if so...try to send an httppostrequest with the data...like this:
HttpClient client = new DefaultHttpClient();
HttpUriRequest httpRequest = new HttpPost("http://yourappid.appspot.com/resource/play");
//set the content type to json
httpRequest.setHeader("Content-Type", "application/json");
//get and work with the response
HttpResponse httpResponse = client.execute(httpRequest);
Let me know if the answer was useful