Convert code to use boost::beast

Builds/CMake/CMakeFuncs.cmake

@@ -358,6 +358,10 @@ macro(use_boost)
         message(WARNING "Boost directory found, but not all components. May not be able to build.")
       endif()
 
+      if(Boost_VERSION VERSION_LESS 106700)
+        message(FATAL_ERROR "Boost version 1.67 or greater is required for boost::beast. Found version: ${Boost_VERSION}")
+      endif()
+
       if(MSVC14)
         # VS2017 with boost <= 1.66.0 requires a flag to suppress warnings
         if(NOT Boost_VERSION VERSION_GREATER 106600)
@@ -581,6 +585,8 @@ macro(setup_build_boilerplate)
     -DSOCI_CXX_C11=1
     -D_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS
     -DBOOST_NO_AUTO_PTR
+    -DBOOST_BEAST_ALLOW_DEPRECATED
+    -DBOOST_ASIO_DISABLE_HANDLER_TYPE_REQUIREMENTS
     )
 
   if (is_gcc)