Normally cpp application is using libcurl library for http request.
But we can meet firewall to prevent the request. it is tricky how to solve the problem. you can find a solution If you have some knowledge with firewall.
I am going to tell that you should not release the product if you didn’t consider the firewall problem.
You need to investigate about firewall and libcurl attributes.
And you need to allow libcurl attributes related to specific firewall.
