RTMP端口工作或不檢查android

Question

我開發了一個opentok使用的應用程序，他們使用的是RMTP，443端口。我想檢查一下這個端口是否在android wifi連接的網絡中打開。我該如何檢查.Any幫助將不勝感激

Answer 1

private static class MyTask extends AsyncTask < Void, Void, Void > { 
private Context mContext; 
Boolean block = false; 
MyTask(Context context) { 
    if (context == null) { 
     throw new IllegalArgumentException("Context can't be null"); 
    } 
    mContext = context; 
}@Override 

protected Void doInBackground(Void...params) { 
    Socket socket = null; 
try { 

InetAddress address = InetAddress.getByName(Constants.SERVER_PORT_CHECK);//give your host address here "www.example.com" 
     String host = address.getHostAddress(); 
     socket = new Socket(host, 443); 
     socket.setSoTimeout(5000); 
    } catch (UnknownHostException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
     block = true; 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
     block = true; 
    } finally { 
     if (socket != null) { 

      try { 
       socket.close(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
     } 
    } 
    return null; 
} 

@Override 
protected void onPostExecute(Void aVoid) { 
    if (block) { 
     final AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(ContactWithOperator.opref); 
     alertDialogBuilder.setIcon(android.R.drawable.ic_dialog_alert); 
     alertDialogBuilder.setTitle(R.string.Port_block_title); 
     alertDialogBuilder.setMessage(R.string.Port_block_msg); 
     alertDialogBuilder.setNeutralButton("Ok", new DialogInterface.OnClickListener() {@Override 
      public void onClick(DialogInterface dialog, int which) { 

      } 
     }); 
     alertDialogBuilder.show(); 

     //do your action here 
    } 
    super.onPostExecute(aVoid); 
} 
}