List of best mirrors for IP address 3.134.115.9, located in an unknown country.
I am very sorry, but no mirror was found. Feel free to download directly:
http://mirrordirector-mb.raspbian.org/raspbian/pool/main/q/qpid-proton/libqpid-proton-cpp12-dev_0.37.0-5_armhf.deb