Not gonna put my main GitHub password on an OSX

Another option is to use an updated coroutine completion token such as or code one yourself.

In case you guys are still looking for a solution, this is what I use (inside a `util` namespace): ```cpp template BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void(boost::system::error_code, std::size_t)) async_send(T &socket, const ConstBufferSequence& buffers, CompletionToken...