Request time failed : java.net.socketexception : Address family not supported by protocol

Question

i have searched for this exception everywhere but could not find a resolution & any help would be appreciated. i have tried putting break points, but they do not get hit

Answer 1

Your problem is with imageUrl: it probably has to start with http or https, and the actual server or hostname you're connecting to must be either a valid IP address or must name-resolve correctly to an IP address.

Answer 2

well i resolved it finally. To get rid of this exception in particular, i started using a single HttpURLConnection(reuse it until it fails, where u create it again), BUT with that i ran into "BitmapFactory.decodeStream returning null" problem, while doing "bmImg = BitmapFactory.decodeStream(is); " This was due to the fact i cannot use the same inputstream over the same connection again, so i had to close it before using it again(is.close(), in.close()). but that dint work for some reason(i dont know!). finally instead of getting inputstream from HttpURLConnection (using conn.getInputStream() ) i directly get it from URL ( myFileUrl.openStream() ). BitmapFactory.decodeStream(is) still can return null sometimes(better to handle that case-ask me why :) ), in which case i try the download again. here is the updated downloadFile(...) method, Hope it helps someone :)

  void downloadFile(String fileUrl){
            URL myFileUrl =null;          
              try {
                   myFileUrl= new URL(fileUrl);
              } catch (MalformedURLException e) {
                  //print exception;
              }
              catch (Exception e) {
                  //print exception;
              }
              try {
                   //InputStream in = conn.getInputStream();--avoid this, get it from url directly instead, unless u really need to read from httpconnection because u want to configure headers or some other reason.
                   InputStream in = myFileUrl.openStream();
                   InputStream is = new BufferedInputStream(in);
                   bmImg = BitmapFactory.decodeStream(is);
                   in.close();
                   is.close();
                   if(bmImg==null)
                   {
                        downloadFile(fileUrl);
                        return;
                   }
                   //this.runOnUiThread(_actionRunble);
                   //_mHandler.postAtFrontOfQueue(_actionRunble);
                   //_mHandler.post(_actionRunble);
                   _mHandler.postDelayed(_actionRunble, 1000);
              }

             catch (IOException e) {
                  downloadFile(fileUrl);
                  //print exception;
              }
              catch (Exception e) {
                  downloadFile(fileUrl);
                  //print exception;
              }

         }