I need to write a server which sends push notifications to iOS and Android devices.
I can successfully send notifications to iOS. Luckily it was painless to implement that part.
I'm facing a problem with the easiest part of the task: Android.
I configured GCM and the Android device successfully registers against the server.
When I try to send a push to the device, I get the following error:
STATUS: 400
JSON_PARSING_ERROR: Unexpected token END OF FILE at position 0.
Here the code that sends the request.
AndroidPush push = new AndroidPush();
push.getRegids().add(token);
push.getData().setMessage(message);
push.getData().setMsgcnt(String.format("%d", (badge + 1)));
URL u = new URL(androidEndpoint);
HttpsURLConnection conn = null;
OutputStream os = null;
OutputStreamWriter osw = null;
InputStream is = null;
InputStreamReader isr = null;
BufferedReader br = null;
try{
conn = (HttpsURLConnection)u.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", androidContentType);
conn.setRequestProperty("Authorization", androidAuthorization);
conn.connect();
os = conn.getOutputStream();
osw = new OutputStreamWriter(os);
System.out.println(push.toJSON());
osw.write(push.toJSON());
int status = conn.getResponseCode();
System.err.println("STATUS: "+status);
if(status == 200){
is = conn.getInputStream();
} else {
is = conn.getErrorStream();
}
isr = new InputStreamReader(is);
br = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
String read = null;
do {
read = br.readLine();
if(read != null)
sb.append(read);
} while (read != null);
if(status != 200){
System.err.println(sb.toString());
} else {
System.out.println(sb.toString());
}
} catch(IOException ex) {
ex.printStackTrace();
throw ex;
} finally {
if(isr != null)
isr.close();
if(is != null)
is.close();
if(osw != null)
osw.close();
if(os != null)
os.close();
if(conn != null)
conn.disconnect();
}
Where:
androidEndpoint = "https://android.googleapis.com/gcm/send";
androidContentType = "application/json";
androidAuthorization = "key=<mykey>";
and the output of the push.toJSON() method is the following String:
{
"registration_ids" : ["APA91bEmD8T9NxQj07uhbTAsD1GTWvT7L_no1SXP70YWaQGPX6VO73pdAOa53PN-hyAyy-3erItWxLDb8W1aQ2nh3np0NttJ5g66w2-142d4bXTCsmrF34-J7rWw4IUObutQznaml59XdfweiEGKzv1Otp3quffUEA"],
"data" : {
"message":"Push di prova",
"msgcnt":"13"
}
}
I cannot see anything wrong... What am I missing?
Thank you for your help,
Developing a solution with php, I recieved always the same error WHEN the message had Umlauts (e.g. äöü) in it.
Without the message went through and arrived the reciever.
The solution was finally to utf8_encode( 'your text here äöä' ) your outgoing strings (message, title, etc. whatever).
Cost my at least several hours to detect what was 'wrong'.
Is it the case that you are missing ',' as shown below in bold
{
"registration_ids" : ["APA91bEmD8T9NxQj07uhbTAsD1GTWvT7L_no1SXP70YWaQGPX6VO73pdAOa53PN-hyAyy-3erItWxLDb8W1aQ2nh3np0NttJ5g66w2-142d4bXTCsmrF34-J7rWw4IUObutQznaml59XdfweiEGKzv1Otp3quffUEA"],
"data" : {
"message":"Push di prova",
"msgcnt":"13"**,**
}**,**
}
Refer message given in this link: http://developer.android.com/google/gcm/adv.html#payload
Related
I have been trying all day to get a minecraft plugin to allow players on bedrock edition on my geyser sever to (OPTIONALY) sign in to java edition using OAuth2's device code flow. I successfully can get a code and url but when I go to poll the API for a successful login I get "Cross-origin token redemption is permitted only for the 'Single-Page Application'." I've tried adding SPA to my azure app registration but the issue persists. I've tried setting the origin header in my request to "http://localhost" and the issue persist:
here is my code for retrieving the login token:
public static JSONObject pollSignIn(String deviceCode) {
double i = 0;
long previousTime = 0;
while (i <= 60000 /*GeyserFloodgateSkinFix.defaultConfig.requestTimeout*/) {
while (!(System.currentTimeMillis() > previousTime)) {}
previousTime = System.currentTimeMillis();
i++;
if ((i/1000) % 3 == 0) {
try {
URL url = new URL("https://login.microsoftonline.com/common/oauth2/v2.0/token");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
con.setRequestProperty("Origin", null);
con.setDoOutput(true);
System.out.println(deviceCode);
String body = String.format(
"grant_type=urn:ietf:params:oauth:grant-type:device_code&client_id=%s&device_code=%s",
"[Censored]",
deviceCode
);
byte[] output = body.getBytes(StandardCharsets.UTF_8);
OutputStream os = con.getOutputStream();
os.write(output);
BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
StringBuilder sb = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
sb.append(br.readLine());
}
JSONObject json = new JSONObject(sb.toString());
if (json.getString("token_type").equalsIgnoreCase("Bearer")) {
return json;
}
}
catch (Exception ignored) {
System.out.println(ignored.getMessage());
}
}
}
return null;
}
if it helps heres the code I use to get the token (This works)
public static JSONObject getAuthCode() {
try {
URL url = new URL("https://login.microsoftonline.com/common/oauth2/v2.0/devicecode");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
con.setDoOutput(true);
String body = String.format(
"scope=XboxLive.signin%%20offline_access&client_id=%s",
"[Censored]"
);
OutputStream os = con.getOutputStream();
byte[] output = body.getBytes(StandardCharsets.UTF_8);
os.write(output, 0, output.length);
BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
StringBuilder sb = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
sb.append(line);
}
con.disconnect();
return new JSONObject(sb.toString());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
UPDATE: I managed to fix the above error but now I am getting "The provided value for the input parameter 'scope' is not valid. The scope 'XboxLive.signin offline_access' is not configured for this tenant." Chanfing the tenant to "consumer" throws "The provided value for the input parameter 'device_code' is not valid. Device codes supporting the personal Microsoft Account sign-in audience can only be used for v2 common or consumers tenants"
I got a situation to test the REST API's Delete call through Java code. I need to pass Form Data with 2 variables as below screenshot to the api request. someone please route me how to do that..
try {
URL url = new URL("http://localhost:8999/testsource");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("DELETE");
conn.setRequestProperty("Accept", "*/*");
conn.setRequestProperty("session", "Cii2vEBZDplu5fI9JNXiM5");
if (conn.getResponseCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
}
BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
System.out.println(output);
}
conn.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
Your question isn't very clear but I'll make an attempt to answer it based on the assumption that your form data contains two fields which are:
id
permanentDelete
String data = "id=the-id-goes-here&permanentDelete=yes-or-no-goes-here";
byte[] bytesToSend = data.getBytes(StandardCharsets.UTF_8);
OutputStream outputStream = conn.getOutputStream();
outputStream.write(bytesToSend);
I have an huge text file online, I know how to fetch the data in the url... an example would be something like this
URL url = new URL(address);
urlConnection = (HttpURLConnection) url.openConnection();
int responseCode = urlConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK) {
InputStream stream = urlConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(stream));
StringBuilder builder = new StringBuilder();
try {
for (String line; (line = bufferedReader.readLine()) != null;)
builder.append(line);
response = builder.toString();
} catch (IOException e) {
e.printStackTrace();
}
}
This file get updated every X minutes and a new line is added to the bottom, so the real info is only in the last line/lines... I was wondering if it would be possible to download only that part, to save bandwith.
Edit: I am looking for a "client-side" solution, without modifying server
Thank you very much.
I am using HttpURLConnection to upload an image and get its response.
It works on emulator and my XiaoMi device.
However, it always get a SocketTimeoutException on my Sony device on the line connection.getInputStream().
I've tried to set timeouts to large value like 1 minute but not work.
public String uploadFile(File file, String requestURL) {
if (file != null) {
long fileSize = file.length();
HttpURLConnection.setFollowRedirects(false);
HttpURLConnection connection = null;
try {
//config of connection
connection = (HttpURLConnection) new URL(requestURL).openConnection();
connection.setConnectTimeout(10000);
connection.setReadTimeout(10000);
connection.setRequestMethod("PUT");
connection.setRequestProperty("Content-Type", "image/jpeg");
connection.setDoOutput(true);
connection.setRequestProperty("Content-length", "" + fileSize);
connection.connect();
//upload file
DataOutputStream out = new DataOutputStream(connection.getOutputStream());
int bytesRead;
byte buf[] = new byte[1024];
BufferedInputStream bufInput = new BufferedInputStream(new FileInputStream(file));
while ((bytesRead = bufInput.read(buf)) != -1) {
out.write(buf, 0, bytesRead);
out.flush();
}
out.flush();
out.close();
//get response message, but SocketTimeoutException occurs here
BufferedReader br = new BufferedReader(new InputStreamReader((connection.getInputStream())));
StringBuilder sb = new StringBuilder();
String output;
while ((output = br.readLine()) != null) {
sb.append(output);
}
//return response message
return output;
} catch (Exception e) {
// Exception
e.printStackTrace();
} finally {
if (connection != null) connection.disconnect();
}
}
return null;
}
What causes this problem happen?And how to fix it?
Additional Info:
I tested on devices under same wifi connection. And sure network and file server worked properly. The file size of tested images is about 100~200kbyte.
Because you set a read timeout of ten seconds and no response was received within ten seconds.
Is this a trick question?
NB You don't need to set the content-length header. Java will do that for you.
Just remove connection.setReadTimeout() statement because by default it will set readTiomeout value to 0 i.e it will wait for data until data is available.so,you might not get SocketTimeOut Exception.
currently I can recognize speech to text using google's speech api. Now that I have this, I was just wondering if there is a way I can stream the response of transcribed text and give it more text to transcribe at the same time. In other words I want to speak into the microphone, and as I speak I want a response from the google servers. The code I am using currently:
System.out.println("openning connection");
HttpsURLConnection httpConn = null;
ByteBuffer buff = ByteBuffer.wrap(data);
byte[] destdata = new byte[2048];
int resCode = -1;
OutputStream out = null;
try {
URL url = new URL(urlStr);
URLConnection urlConn = url.openConnection();
if (!(urlConn instanceof HttpsURLConnection)) {
throw new IOException ("URL must be HTTPS");
}
httpConn = (HttpsURLConnection)urlConn;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("POST");
httpConn.setRequestProperty("User-Agent", USER_AGENT);
httpConn.setDoOutput(true);
httpConn.setRequestProperty("AcceptEncoding", "gzip,deflate,sdch");
httpConn.setChunkedStreamingMode(0); //TransferType: chunked
httpConn.setRequestProperty("Content-Type", "audio/l16; rate=" + sampleRate);
// this opens a connection, then sends POST & headers.
out = httpConn.getOutputStream();
//beyond 15 sec duration just simply writing the file
// does not seem to work. So buffer it and delay to simulate
// bufferd microphone delivering stream of speech
// re: net.http.ChunkedOutputStream.java
while(buff.remaining() >= destdata.length){
buff.get(destdata);
out.write(destdata);
};
byte[] lastr = new byte[buff.remaining()];
buff.get(lastr, 0, lastr.length);
out.write(lastr);
out.close();
resCode = httpConn.getResponseCode();
if(resCode >= HttpURLConnection.HTTP_UNAUTHORIZED){//Stops here if Google doesn't like us/
System.out.println("unauthorized");
throw new HTTPException(HttpURLConnection.HTTP_UNAUTHORIZED);//Throws
}
String line;//Each line that is read back from Google.
BufferedReader br = new BufferedReader(new InputStreamReader(httpConn.getInputStream()));
while ((line = br.readLine( )) != null) {
System.out.println(line);
if(line.length()>19 && resCode > 100 && resCode < HttpURLConnection.HTTP_UNAUTHORIZED){
GoogleResponse gr = new GoogleResponse();
parseResponse(line, gr);
fireResponseEvent(gr);
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
finally {httpConn.disconnect();}
Thanks for any help.