workaround incomplete std::shared_ptr compatibility of old boost versions

Server/Connection.h

@@ -35,10 +35,33 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <boost/array.hpp>
 #include <boost/asio.hpp>
+#include <boost/config.hpp>
+#include <boost/version.hpp>
+
+ #include <memory>
+ #include <string>
+ #include <vector>
+
+//workaround for incomplete std::shared_ptr compatibility in old boost versions
+#if BOOST_VERSION < 105300 || defined BOOST_NO_CXX11_SMART_PTR
+
+namespace boost {
+template<class T>
+const T* get_pointer(std::shared_ptr<T> const& p)
+{
+    return p.get();
+}
+
+template<class T>
+T* get_pointer(std::shared_ptr<T>& p)
+{
+    return p.get();
+}
+} // namespace boost
+
+#endif
+
 
-#include <memory>
-#include <string>
-#include <vector>
 
 class RequestHandler;