string:strip/3 don't work right striping

[shk]

Hello,

I receive data by socket in tcp:

receive_loop(Socket) ->
    case gen_tcp:recv(Socket, 0) of
	 {ok, Data} ->
	    ReParseData = string:strip(string:to_lower(Data), both, $.),
	    io:format(ReParseData, []),
	    case ReParseData of
		"quit\r\n" ->
	          gen_tcp:send(Socket, "quit \r\n"),
		  gen_tcp:close(Socket);
	        _ ->
		  io:format(Data, []),
		  receive_loop(Socket)
	     end;
	 {error, closed} ->
	    ok
    end.

if I send .........................Hello
......................................
I got in shell:
>Hello ......................................

How can i correctly delete space from left and right in stirng?

Thank you.
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