These changes haven't been tested; just a raw starting point for fixing
things up later on. Generated with:

clang-tidy -checks='*' -fix-errors ../libs/network/test/*.cpp -header-filter='boost/network/*'

From within a build directory, like this:

(while in cpp-netlib)
mkdir build
cmake -G Ninja -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_BUILD_TYPE=Debug -DOPENSSL_ROOT_DIR=/Users/dberris/homebrew/Cellar/openssl/1.0.2d_1 -DBOOST_ROOT=/Users/dberris/Source/boost_1_56_0 -DCMAKE_EXPORT_COMPILE_COMMANDS=ON ..