added a function to set the download_dir in the internal config ets

src/ibrowse.erl

@@ -91,6 +91,7 @@
          set_max_sessions/3,
          set_max_pipeline_size/3,
          set_max_attempts/3,
+         set_download_dir/1,
          set_dest/3,
          trace_on/0,
          trace_off/0,
@@ -487,6 +488,11 @@ set_max_pipeline_size(Host, Port, Max) when is_integer(Max), Max > 0 ->
 set_max_attempts(Host, Port, Max) when is_integer(Max), Max > 0 ->
     gen_server:call(?MODULE, {set_config_value, {max_attempts, Host, Port}, Max}).
 
+%% @doc set the download directory where the files are stored
+%% @spec set_download_dir(Dir::string()) -> ok
+set_download_dir(Dir) -> 
+    gen_server:call(?MODULE, {set_config_value, download_dir, Dir}).
+
 do_send_req(Conn_Pid, Parsed_url, Headers, Method, Body, Options, Timeout) ->
     case catch ibrowse_http_client:send_req(Conn_Pid, Parsed_url,
                                             Headers, Method, ensure_bin(Body),