gzip compression in android app as client and php server - php

Question

In my android app i want to send compressed data to php server using gzip compression and receive response from the server and decompress the response if it is compressed. But when i am sending compressed data,server is getting null and not the data which i am sending and it is returning error message.
This is code i am using for compression--
public static String compress(String strData) throws Exception
{
ByteArrayOutputStream obj = new ByteArrayOutputStream();
GZIPOutputStream gzip = new GZIPOutputStream(obj);
gzip.write(strData.getBytes("UTF-8"));
gzip.close();
String outStr = obj.toString("UTF-8");
return outStr;
}
This is the code used for decomprssion---
public static String decompress(String str) throws Exception
{
byte[] bytes1 = str.getBytes("UTF-8");
GZIPInputStream gis = new GZIPInputStream(new ByteArrayInputStream(bytes1));
BufferedReader bf = new BufferedReader(new InputStreamReader(gis, "UTF-8"));
String outStr = "";
String line;
while ((line=bf.readLine())!=null) {
outStr += line;
}
return outStr;
}
And I also add a header to httppost request
httpPost.addHeader("Accept-Encoding", "gzip, deflate");
can anyone please tell me what to do if I want to compress data before sending to server and also receive response and decompress it, if it is compressed.

Answer 1

public static void main() {
String myString = "H4sIAAAAAAAAA5WMuwrCMBSGX0XOnCFpLoZ0ExH0FaTDyU0DTVsSB6H03Y3dHN3+67fCgm8wjAA6dz2DASmjUsjRCs8tahu5FCw6DQQmzKEt";
byte[] decode = Base64.decode(myString, Base64.NO_WRAP);
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(decode);
int read;
try {
GZIPInputStream gzipInputStream = new GZIPInputStream(byteArrayInputStream);
BufferedReader br = new BufferedReader(new InputStreamReader(gzipInputStream));
System.out.println("read222 :" + br.readLine());
DataInputStream dataInputStream = new DataInputStream(gzipInputStream);
//System.out.println("read222 :" + dataInputStream.retoString());
for (int i = 0; i < decode.length; i++) {
read = dataInputStream.readInt();
int rRead = Integer.reverseBytes(read);
System.out.println("read :" + dataInputStream.read());
}
} catch (IOException e) {
e.printStackTrace();
}
}

Answer 2

run your code in a thread or asynctask or service whereever you want
Thread thread=new Thread(new Runnable()
{
#Override
public void run()
{
try
{
String body = "Naval is working on zip and unzip processed return json";
URL url = new URL("http://yourServerUrl/yourgzip.php");
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
conn.setRequestProperty("Content-encoding", "gzip");
conn.setRequestProperty("Content-type", "application/octet-stream");
GZIPOutputStream dos = new GZIPOutputStream(conn.getOutputStream());
dos.write(body.getBytes());
dos.flush();
dos.close();
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder builder=new StringBuilder();
String decodedString = "";
while ((decodedString = in.readLine()) != null)
{
builder.append(decodedString);
}
in.close();
Log.e("Data", builder.toString());
}
catch (Exception e)
{
Log.e("Datae", builder.toString());
}
}
});
thread.start();
on server side ask them to use this code
$postdata=gzinflate( substr($HTTP_RAW_POST_DATA,10,-8) );
as $HTTP_RAW_POST_DATA deprecated so use file_get_contents() like to return array
$post = array_map('urldecode',explode('&',file_get_contents("php://input")));
or like this method to decompress a gzip stream that was pushed to my webserver
$x = file_get_contents("compress.zlib://php://input");
and using
$data_as_associate_Array=json_decode($x,true);