private void close(){
			try{
				if(sOutput != null)
					sOutput.close();
			}
			catch(Exception e){
			}
			try{
				if(sInput != null)
					sInput.close();
			}
			catch(Exception e){
			}
			try{
				if(socket != null)
					socket.close();
			}
			catch(Exception e){
			}
		}