I need help, my app was working fine but after renew of Domain name, I started getting error 301. Is something to be fixed in my below code? Though if I use https://Google.com with same code, response code is 200. Hostgator is also not able to find the issue to fix. Can someone help, pls.
Thread thread = new Thread(new Runnable() {
#Override
public void run() {
try {
URL url = new URL("http://innovativeapps.me");
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.connect();
int con_respone_code = httpURLConnection.getResponseCode();
Log.i("Response Code: ", con_respone_code + "");
Log.i("Error Message", httpURLConnection.getResponseMessage());
httpURLConnection.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
}
});
thread.start();
If i open this using web browser, the url is working fine.
Your site is being redirected to https://innovativeapps.me. When you use the http:// schema, it redirects and returns a 301 letting you know that you need to update your url.
There's a lot of questions on StackOverflow for sending a single POST request on Android, but none of them cover cases where you're receiving lots of data from a sensor connected to your phone and need to Post Request that data as you receive it.
I'm receiving data from a sensor connected to my Android, and need to to send it to a Flask server hosted on Heroku.
public void sendToFlask(JSONObject jsonParam) {
Thread thread = new Thread(new Runnable() {
#Override
public void run() {
try {
URL url = new URL("URLHERE");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
conn.setRequestProperty("Accept","application/json");
conn.setDoOutput(true);
conn.setDoInput(true);
Log.i("JSON", jsonParam.toString());
DataOutputStream os = new DataOutputStream(conn.getOutputStream());
//os.writeBytes(URLEncoder.encode(jsonParam.toString(), "UTF-8"));
os.writeBytes(jsonParam.toString());
os.flush();
os.close();
Log.i("STATUS", String.valueOf(conn.getResponseCode()));
Log.i("MSG" , conn.getResponseMessage());
conn.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
}
});
This code unfortunately errors out for creating too many files
I understand that the solution here may be to use a global HttpURLConnection but unfortunately that also gives me the error of java.net.ProtocolException: cannot write request body after response has been read This happens after I move the conn and url variables to global scope and set them in onCreate
I'm doing an Android app with an API with Python. The API is on a Google App Engine cloud and everything works fine when I tested it with Postman.
I'm trying to do a Login with a POST method. That method returns json with the user information I keep getting that error: FileNotFoundException
Here is some of my code:
try{
String account = params[0].get(0);
String password = params[0].get(1);
URL url = new URL("http", WEB_SERVICE_URL, PORT, REST_LOGIN);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setConnectTimeout(CONNECTION_TIMEOUT);
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setRequestProperty("Content-Type", "application/json");
httpURLConnection.setRequestProperty("Accept", "application/json");
JSONObject json = jsonParser.serialJsonLogin(nomCompte, motPasse);
osw = new OutputStreamWriter(httpURLConnection.getOutputStream(),"UTF-8");
osw.write(json.toString());
osw.flush();
String body = readStream(httpURLConnection.getInputStream());
osw.close();
Log.i(TAG, "Return : " + body);
user = jsonParser.deserializeJsonUser(body);
}catch (Exception e) {
mException = e;
}finally {
if (mHttpURLConnection != null) {
mHttpURLConnection.disconnect();
}
}
return user;
At: String body = readStream(httpURLConnection.getInputStream()); I'm getting a java.io.FileNotFoundException: http://10.0.2.2:8080/login
My readStream method is fine, I tested it. If I look in my Google App Engine logs, I can see that there is no 404, or anything wrong. If I find the user I get a 201 if not a 403. So even if the error says FileNotFound, I see status code which means that actually the URL is right.
UPDATE: My API was giving me a 201 and getInputStream apparently doesn't work on 201 status. Changed my return status to 200 in my API and it works fine.
We (Panos and Rainer - see the comments down) have a server and several Android devices.
We want to send push notifications from our server via GCM to the Android devices.
Now we make a post request to the GCM server. The GCM server response is that all is fine (success==1 and even the message-id)!
BUT the push notification(s) are never delivered to the devices.
If we use the same data and the Chrome addon Postman - the notifications are delivered immediately.
We tried all lot of different solutions. We get always the feedback of the GCM server that all is ok - but the push notifications aren't send.
We also tried this one:
https://github.com/googlesamples/google-services/blob/master/android/gcm/gcmsender/src/main/java/gcm/play/android/samples/com/gcmsender/GcmSender.java
You might also post the URL you use. There is a new GCM enpoint which looks like the following:
https://gcm-http.googleapis.com/gcm/send
I am not yet sure what's causing the issues on your side. But the following is tested and working:
public class Main {
public static void main(String[] args) {
// write your code here
try {
String url = "https://gcm-http.googleapis.com/gcm/send";
URL obj = new URL(url);
HttpsURLConnectionImpl conn = (HttpsURLConnectionImpl) obj.openConnection();
conn.setRequestProperty("Content-Type", "application/json");
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty ("Authorization", "key=***");
String title = "Short title";
String body = "A body :D";
String token = "****";
String data = "{ \"notification\": { \"title\": \"" + title +"\", \"body\": \"" + body + "\" }, \"to\" : \"" + token + "\", \"priority\" : \"high\" }";
OutputStreamWriter out = new OutputStreamWriter(conn.getOutputStream());
out.write(data);
out.close();
String text = getText(new InputStreamReader(conn.getInputStream()));
System.out.println(text);
} catch (Exception e) {
e.printStackTrace();
}
}
public static String getText(InputStreamReader in) throws IOException {
StringBuilder sb=new StringBuilder();
BufferedReader br = new BufferedReader(in);
String read;
while((read=br.readLine()) != null) {
sb.append(read);
}
br.close();
return sb.toString();
}
}
This is the data used for the Postman request which is working without any problem.
Rainer already mentioned that we tried several implementations on the Java side and it seems that we are always able to communicate with the service and receive a response which seems to look correct so far:
{
"multicast_id":7456542468425129822,
"success":1,
"failure":0,
"canonical_ids":0,
"results":
[{
"message_id":"0:1457548597263237%39c590d7f9fd7ecd"
}]
}
Not sure if I'm on the right track but do you mean downstream HTTP messages (plain text)?
Tried to send the following JSON to the service (from Postman) which results again in a positive response but this time the notification did not reach the device (just to make that clear, at the moment there is no app on the device listening actively for incoming notifications -> first of all we just want to ensure that they generally arrive on the device):
{
"data":
{
"score": "5x1",
"time": "15:10"
},
"to" : "SECRET-DEVICE-TOKEN"
}
Thanks to all of you trying to help here but to be honest, this issue is really frustrating. Communicating with an interface\service which seems not to be able to return a useful response in case the request contains maybe evil stuff which will finally prevent GCM from sending the push notification to the device, feels like a pain in the ass. If Postman would also fail I would say ok, you can not be so stupid :-)
Here are some quick'n dirty implementations we have already used.
Example
try
{
URL url = new URL(apiUrl);
HttpsURLConnection conn = (HttpsURLConnection);//also tried HttpURLConnection
url.openConnection();
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/json");
conn.setRequestProperty("Authorization", "key="+apiKey);
conn.setDoOutput(true);
String json = "{\"priority\":\"high\",\"notification\":{\"title\":\"Some title\",\"text\":\"Some text\"},\"to\":\""+deviceToken+"\"}";
OutputStream os = conn.getOutputStream();
os.write(json.getBytes());
os.flush();
}
catch(Exception exc)
{
System.out.println("Error while trying to send push notification: "+exc);
}
Example
HttpClient httpClient = HttpClientBuilder.create().build();
try
{
HttpPost request = new HttpPost(apiUrl);
StringEntity params =new StringEntity("{\"priority\":\"high\",\"notification\":{\title\":\"Some title\",\"text\":\"Some text\"},\"to\":\""+deviceToken+"\"}");
request.addHeader("Content-Type", "application/json");
request.addHeader("Authorization", "key="+apiKey);
request.setEntity(params);
HttpResponse response = httpClient.execute(request);
// check response
System.out.println(response.getStatusLine().toString());
}catch (Exception exc) {
System.out.println("Error while trying to send push notification: "+exc);
} finally {
httpClient.getConnectionManager().shutdown(); //Deprecated
}
Example
try
{
String charset = "UTF-8";
URLConnection connection = new URL(apiUrl).openConnection();
connection.setDoOutput(true);
connection.setRequestProperty("Accept-Charset", charset);
connection.setRequestProperty("Content-Type", "application/json;charset=" + charset);
connection.setRequestProperty("Authorization", "key="+apiKey);
String param = "{\"priority\":\"high\",\"notification\":{\"title\":\"Some title\",\"text\":\"Some text\"},\"to\":\""+deviceToken+"\"}";
try (OutputStream output = connection.getOutputStream())
{
output.write(param.getBytes(charset));
}
InputStream response = connection.getInputStream();
}
catch(Exception exc)
{
System.out.println("Error while trying to send push notification: "+exc);
}
Example
try
{
// prepare JSON
JSONObject jGcmData = new JSONObject();
JSONObject jData = new JSONObject();
jData.put("message", "{ \"data\": {\"score\": \"5x1\",\"time\": \"15:10\"},\"to\" : \""+deviceToken+"\"}");
jGcmData.put("to", deviceToken);
jGcmData.put("data", jData);
// Create connection to send GCM Message request.
URL url = new URL("https://android.googleapis.com/gcm/send");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestProperty("Authorization", "key=" + apiKey);
conn.setRequestProperty("Content-Type", "application/json");
conn.setRequestMethod("POST");
conn.setDoOutput(true);
// Send GCM message content.
OutputStream outputStream = conn.getOutputStream();
outputStream.write(jGcmData.toString().getBytes());
// Read GCM response.
InputStream inputStream = conn.getInputStream();
String resp = IOUtils.toString(inputStream);
System.out.println(resp);
} catch (IOException e) {
System.out.println("Unable to send GCM message. "+e);
}
Mike, with your example it's working also on our side. After comparing your implementation with the on eon our side, the only real difference I found is the used URL!!
Somehow the URL used in our Java implementation was https://android.googleapis.com/gcm/send
Seems that https://gcm-http.googleapis.com/gcm/send is the right one which by the way was also used for our Postman tests.
But why on hell is the URL from our failed tests still somehowe valid and returns a response!?
Setting the priority to high in the json resolved the issue for me.
'registration_ids' => $id,
'priority' => 'high',
'data' => $load
For our case, the clients Android devices had intermittent internet connection issue, that is, network dropouts thus causing notification delivery failed. We resolved the reliability issue with the following JAVA GCM code:
gcmPayload.setTime_to_live(messageExpiryTime); //in seconds. Set notification message expiry to give user time to receive it in case they have intermittent internet connection, or phone was off
gcmPayload.setPriority("high");
and APNS code:
ApnsService apnsService = APNS.newService().withCert(certificateStream, configurations.getApnPassword()).withProductionDestination().build();
PayloadBuilder payloadBuilder = APNS.newPayload();
...
payloadBuilder.instantDeliveryOrSilentNotification(); //same as content-available=true
String payload = payloadBuilder.build();
Integer now = (int)(new Date().getTime()/1000);
//use EnhancedApnsNotification to set message expiry time
for(String deviceToken : deviceTokens) {
EnhancedApnsNotification notification = new EnhancedApnsNotification(EnhancedApnsNotification.INCREMENT_ID() /* Next ID */,
now + messageExpiryTime /* Expiry time in seconds */,
deviceToken /* Device Token */,
payload);
apnsService.push(notification);
}
Also, remember to consider time zone if your backend server time is different to the client mobile app time.
Greetings,
I am trying to setup a server connection from my BlackBerry Application . I was able to get a response code on the status of the server. Now i have a few values which i have to POST to the server
Its like a registration page values(username, password, age ) have to be sent to the server .
ConnectionFactory connFact = new ConnectionFactory();
ConnectionDescriptor connDesc;
connDesc = connFact.getConnection(url);
if (connDesc != null)
{
HttpConnection httpConn;
httpConn = (HttpConnection)connDesc.getConnection();
try
{
final int iResponseCode = httpConn.getResponseCode();
UiApplication.getUiApplication().invokeLater(new Runnable()
{
public void run()
{
Dialog.alert("Response code: " + Integer.toString(iResponseCode));
}
});
}
catch (IOException e)
{
System.err.println("Caught IOException: " + e.getMessage());
}
}
Thats the code i used to get the response code.
I would appreciate it if someone could help me how i can make a POST request to the server..
the server url for status was company.com/app/version/stats
when it for register it would be
company.com/app/register
Thank you
What type of a POST do you use? If you are just passing key-value pairs, then it should be a POST of a "application/x-www-form-urlencoded" content-type.
So, what lacks youe code is:
1). Set a proper content-type on your connection:
httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
2). Prepare the content to be sent to the server via the POST:
URLEncodedPostData encPostData = new URLEncodedPostData("UTF-8", false);
encPostData.append("username", username);
encPostData.append("password", password);
encPostData.append("age", age);
byte[] postData = encPostData.toString().getBytes("UTF-8");
3). Set content-length for the connection (this step may be optional - try without this first, probably the BB OS is smart enough to set this automatically):
httpConn.setRequestProperty("Content-Length", String.valueOf(postData.length));
4). Open an OutputStream and write the content to it (the code is simplified):
OutputStream os = httpConn.openOutputStream();
os.write(postData);
os.flush();
...
httpConn = (HttpConnection)connDesc.getConnection();
httpConn.setRequestMethod(HttpConnection.POST);
httpConn.setRequestProperty("username",name);
httpConn.setRequestProperty("password",pass);
....