Or from a mirrored place :
Get the sources using git or download a tarball.
git clone ssh://gerrit.iotivity.org/iotivity git tag -L
Alternatively you can download archives from :
Or branch snapshots:
But it's encouraged to pull sources from maintenance branches, like :
git clone -b 1.1-rel --depth 1 https://github.com/iotivity/iotivity
Also you can get archives of specific tags or branches ie: