private PrintStream getPrintStream(Socket clientSocket) {
		PrintStream printStream = null;
		try {
			printStream = new PrintStream(clientSocket.getOutputStream());
			this.log.fine("Create new printStream: " + printStream.toString());
		} catch (IOException e) {
			e.printStackTrace();
			try {
				clientSocket.close();
				this.log.fine("close client Socket: " + clientSocket.toString());
			} catch (IOException e1) {
				e1.printStackTrace();
			}
			printStream = null;
		}
		return printStream;
	}