QHttpClient::request always returns true, even if the passed url is wrong.

[wujiangyun]

Thanks for this project.
A little bit confused, QHttpClient::request always returns true, even if the passed url is wrong.
For example:
Url http://192.168.1.100:20030/devices is Invalid. but when i request this url use QhttpClient::request still return true.
How should i determine the url is valid?