Sunday 14 April 2019

Android: HttpURLConnection throwing EOFException



I am creating connection with server inside AsyncTask. I am using HttpURLConnection. I am sending the data in url. Below is the code of doInBackground() method of AsyncTask. I tried retrying to send the data to server but the issue was not fixed. I also tried setting Connection close header. However, the issue still persists.




protected String doInBackground(String... url) {
JSONObject body = new JSONObject();
try {
body.put("body","");
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}


mUploadChunkURL = url[0];
System.out.println("length: " + mDataLength + " String length: " + String.valueOf(mDataLength));
URL myurl;
HttpsURLConnection con = null;
while (numberOfTries < MAX_RETRIES) {
try {
myurl = new URL(mUploadChunkURL);
con = (HttpsURLConnection)myurl.openConnection();
con.setRequestMethod("POST");
con.setConnectTimeout(1000*60*2);

con.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
con.setDoOutput(true);
con.setDoInput(true);

if (Build.VERSION.SDK != null
&& Build.VERSION.SDK_INT > 13) {
System.out.println("connection close");
con.setRequestProperty("Connection", "close");
}


DataOutputStream output = new DataOutputStream(con.getOutputStream());
output.writeBytes(body.toString());
output.close();

System.out.println("Resp Code: "+con.getResponseCode());
System.out.println("Resp Message: "+ con.getResponseMessage());

Log.e("64","Resp Message: "+inputLine.toString());

} catch (IOException e) {

Log.e("70", "IO exception: " + e.toString());
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {

if (con != null)
con.disconnect();
}


numberOfTries++;
}

return null;
}


I am getting EOFException. I am getting this exception in this line "System.out.println("Resp Code: "+con.getResponseCode());". Below is Error Log.



05-23 15:46:25.281: W/System.err(16688): java.io.EOFException

05-23 15:46:25.281: W/System.err(16688): at libcore.io.Streams.readAsciiLine(Streams.java:203)
05-23 15:46:25.281: W/System.err(16688): at libcore.net.http.HttpEngine.readHeaders(HttpEngine.java:608)
05-23 15:46:25.281: W/System.err(16688): at libcore.net.http.HttpEngine.readResponseHeaders(HttpEngine.java:561)
05-23 15:46:25.281: W/System.err(16688): at libcore.net.http.HttpEngine.readResponse(HttpEngine.java:813)
05-23 15:46:25.281: W/System.err(16688): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:274)
05-23 15:46:25.281: W/System.err(16688): at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:486)
05-23 15:46:25.281: W/System.err(16688): at libcore.net.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:134)
05-23 15:46:25.281: W/System.err(16688): at com.utility.UploadFileChunk.doInBackground(UploadFileChunk.java:71)
05-23 15:46:25.296: W/System.err(16688): at com.utility.UploadFileChunk.doInBackground(UploadFileChunk.java:1)
05-23 15:46:25.296: W/System.err(16688): at android.os.AsyncTask$2.call(AsyncTask.java:287)

05-23 15:46:25.296: W/System.err(16688): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
05-23 15:46:25.296: W/System.err(16688): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
05-23 15:46:25.296: W/System.err(16688): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
05-23 15:46:25.296: W/System.err(16688): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
05-23 15:46:25.296: W/System.err(16688): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
05-23 15:46:25.296: W/System.err(16688): at java.lang.Thread.run(Thread.java:856)


Please help me out.


Answer




Actually the url was not well formed. Hence I was getting EOFException. I was sending Base64 data in url and while converting the data into Base64 I was not giving NO_WRAP flag. Becasue of that the Base64 data was not coming in single long line.


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