Curl++: is an option, particularly if you want things in more of a C++ style.
cpp-netlib: very good and simple to use, available on ubuntu
sudo apt-get install libcppnetlib-dev
example:
using namespace boost::network;
using namespace boost::network::http;
client::request request_("http://127.0.0.1:8000/");
request_ << header("Connection", "close");
client client_;
client::response response_ = client_.get(request_);
std::string body_ = body(response_);