Microsoft has open-sourced Casablanca (the C++ REST SDK) on GitHub.

To make it easy to use on Fedora, I packaged and published RPMs on Fedora COPR: COPR: ritz/cpprestsdk

To enable the repository and install:

sudo dnf copr enable ritz/cpprestsdk
sudo dnf install cpprest-devel

Happy compiling with -lcpprest!