Develop Reference

Uploading zip file from Android to dot net server

I am trying to upload a zip file from files from the android application to the server. I am initiating the HttpEntity object and uploading it in bytes using OutputStream and utf-8 char-set.
HttpEntity entity = MultipartEntityBuilder.create()
.setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
.addPart("Solution", fileBody).build();
URL url = null;
try {
url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
try {
connection.setRequestProperty("Content-Type", "application/zip");
connection.setRequestProperty("Accept", "application/zip;");
connection.setRequestMethod("POST");
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
try (OutputStream os = connection.getOutputStream()) {
byte[] input = entity.toString().getBytes("utf-8");
os.write(input, 0, input.length);
}
return connection.getInputStream();
} catch (Exception e) {
Log.v("Exception", e.getMessage());
} finally {
connection.disconnect();
}
} catch (Exception e) {
Log.v("Exception", e.getMessage());
}
On the server, I am receiving empty "Files" object under HttpContext.Current.Request.
[HttpPost]
[Route("UploadProblemSolution")]
public HttpResponseMessage UploadProblemSolution()
{
try
{
var httpRequest = HttpContext.Current.Request;
if (httpRequest.Files.Count > 0)
{
//save zip files
}
}
catch (Exception ex)
{
}
}

HttpConnection don't close

I want to close the get request connection but,it didn't closed.
Its my code block
Edit code block but doesn't work again..
try {
HttpClient client = new DefaultHttpClient();
URI website = website = new URI("http://"+IPAdres+"/?Arduino="+Komut);
HttpGet request = new HttpGet();
request.setURI(website);
HttpResponse response = client.execute(request);
HttpEntity entity = response.getEntity();
EntityUtils.consume(entity);
request.abort();
client.getConnectionManager().shutdown();
client.getConnectionManager().closeExpiredConnections();
} catch (URISyntaxException e) {
Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
} catch (ClientProtocolException e) {
Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
}
I want to close connection after request

Android ways are little different from java ways. Can yo try this approach?
URL url = new URL("http://www.android.com/");
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
try {
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
readStream(in);
} finally {
urlConnection.disconnect();
}
To read more on this try this link

HttpUrlConnection returns -1 status code

I have problem with connecting to my server. Following code returns -1 as response code and null as response message.
protected Boolean doInBackground(MyTaskParams... params) {
URL url = null;
String load = params[0].jobj.toString();
try {
url = new URL(params[0].serverUrl);
} catch (MalformedURLException e) {
e.printStackTrace();
}
try {
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setConnectTimeout(3000);
urlConnection.setReadTimeout(3000);
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
urlConnection.setChunkedStreamingMode(0);
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.connect();
OutputStreamWriter osw = new OutputStreamWriter(urlConnection.getOutputStream());
osw.write(load);
osw.flush();
osw.close();
if(urlConnection.getResponseCode()==200 && urlConnection.getResponseMessage().contains("true") ) return true;
else return false;
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
While debbuging url and body content (which is load in code) are correct. When I try to connect with the server using those params with Fiddler it works perfectly and I get 200 status code. Do you have any ideas what is wrong?
Im passing jData object as the jobj:
JSONObject User=new JSONObject();
JSONObject Mobile=new JSONObject();
JSONObject jData=new JSONObject();
try {
User.put ("UserLogin", "test");
User.put ("UserPassword", "test");
Mobile.put ("MobileIDD", IDD);
Mobile.put("MobileToken", token);
jData.put("Mobile", Mobile);
jData.put("User", User);
} catch (JSONException e) {
e.printStackTrace();
}
#EDIT
Solution with System.setProperty("http.keepAlive", "false") didnt help.

I solved the problem. It was in this line:
if(urlConnection.getResponseCode()==200 && urlConnection.getResponseMessage().contains("true") ) return true;
When I changed it to:
int code = urlConnection.getResponseCode();
if (code==200.....)
It started working.

HttpURLConnection Post issues

I have the following code in my program, used for inserting record -
private Void downloadUrl() throws IOException {
String postParameters;
HttpURLConnection urlConnection = null;
postParameters = "name="+ URLEncoder.encode(user.name,"UTF-8")
+"&age="+URLEncoder.encode(user.age+"","UTF-8")
+"&username="+URLEncoder.encode(user.username,"UTF-8")
+"&password="+URLEncoder.encode(user.password,"UTF-8");
if (postParameters != null) {
Log.i("Post", "POST parameters: " + postParameters);
try {
URL urlToRequest = new URL(SERVER_ADDRESS);
urlConnection = (HttpURLConnection) urlToRequest.openConnection();
urlConnection.setReadTimeout(30000 /* milliseconds */);
urlConnection.setConnectTimeout(30000 /* milliseconds */);
urlConnection.setDoOutput(true);
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
urlConnection.setFixedLengthStreamingMode(
postParameters.getBytes().length);
PrintWriter out = new PrintWriter(urlConnection.getOutputStream());
out.print(postParameters.getBytes());
out.close();
// handle issues
int statusCode = urlConnection.getResponseCode();
Log.e("Response", "The response is: " + statusCode);
} catch (MalformedURLException e) {
// handle invalid URL
Log.e("Response", "invalid URL");
} catch (SocketTimeoutException e) {
// hadle timeout
Log.e("Response", "handle timeout");
} catch (IOException e) {
// handle I/0
Log.e("Response", "handle IO problem");
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
}
return null;
}
The code is showing no errors and the logged entries are
09-27 12:24:17.944 5006-5039/? E/Response﹕ The response is: 200
09-27 12:24:33.729 5006-5118/? I/Post﹕ POST parameters: name=vibha&age=25&username=vib&password=1234
But when I check the database, the new record is not created.
But if I use PHP code in a file and post the same parameters,the records are getting inserted.
My requirement for help and guidance is how to pass the post parameter in the HttpURLConnection class

getInputStream throws EOFException when sending JSON request

I get an EOFException from getInputStream in the following Android Code.
private void downloadUrl() {
HttpsURLConnection conn = null;
DataOutputStream printout = null;
try {
try {
conn = (HttpsURLConnection) new URL("some url").openConnection();
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setAllowUserInteraction(false);
conn.setRequestProperty("Accept", "application/json");
conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
}
catch (ProtocolException e){
}
JSONObject jsonReq = new JSONObject();
jsonReq.put("userID", "id");
jsonReq.put("password", "1234");
OutputStream output = conn.getOutputStream();
try {
OutputStreamWriter wr = new OutputStreamWriter(output);
wr.write(URLEncoder.encode(jsonReq.toString(),"utf-8"));
wr.flush();
wr.close();
}
catch (IOException e) {
}
InputStream in = conn.getInputStream(); //I get EOFException here
try {
BufferedReader rd = new BufferedReader(new InputStreamReader(in));
String responseSingle = null;
while ((responseSingle = rd.readLine()) != null) {
response = response + responseSingle;
}
rd.close();
}
catch (IOException e) {
}
finally {
if (in != null)
in.close();
}
}
catch (IOException e){
}
catch (JSONException e) {
}
finally{
if(conn!=null)
conn.disconnect();
}
}
What is causing this Exception?

public class EOFException extends IOException:
Signals that an end of file or end of stream has been reached unexpectedly during input.
http://docs.oracle.com/javase/7/docs/api/java/io/EOFException.html
You are calling conn.getOutputStream(); and then calling conn.getInputStream(); without resetting. You are already at the end of the file.