[mosquitto-dev] connect_async() returns error 14

[sergek <sergek@xxxxxxx>]

Hello colleagues!
 I use the libmosquittopp in Windows 8/10.
When connecting to the broker via mosquittopp::connect_async(), this function returns error 14 (MOSQ_ERR_ERRNO), errno = 10057 (WSAENOTCONN - Socket is not connected). 
The error can be avoided if to call mosquittopp::loop_start() before connect_async().
 In Ubuntu there are no problems, everything works like clockwork.
 In what may be the cause in Windows?
 Thank you.
Serge.