I tried to send an email to the listed address, but the account is no longer active. I got a bounce immediately. Does anyone happen to know where base64.h in xmlrpcpp comes from and which license applies to it?
edit1:
After more digging, this seem to be the original publication: http://www.codeguru.com/cpp/cpp/cpp_mfc/article.php/c4095/STL-Compatible-Base64-Encoder.htm
There is no license information included though…
edit2:
There is a github issue for solving the base64.h licensing issues: https://github.com/ros/ros_comm/issues/1034