Double is an remote event service based on HTTP protocol, used for http server push event easily.
NOTES: Double just support POSIX systems like linux
$ mkdir build && cd build
$ cmake ..
$ make install
# Build type (default is 'Release')
CMAKE_BUILD_TYPE
# Install prefix
CMAKE_INSTALL_PREFIX
The following 'Double' specific CMake variables are as follows
# Specify the installation path (default is 'CMAKE_INSTALL_PREFIX/double')
DOUBLE_INSTALL_PREFIX
# Specify the libevent binary directory
DOUBLE_LIBEVENT_BINARY_DIR
# Specify the libevent include directory
DOUBLE_LIBEVENT_INCLUDE_DIR