From db8e8951daadfe5121def7a0a854afbce467e6c9 Mon Sep 17 00:00:00 2001
From: leeter <leeter@users.noreply.github.com>
Date: Sat, 12 Nov 2016 14:50:46 -0700
Subject: [PATCH] fully qualify handler_type<> template in
 BOOST_ASIO_HANDLER_TYPE macro

This allows developers to use the handler verification macros in custom services and streams, without this they will receive and error unless they define their code in the `::boost::asio` namespace or do a `using namespace boost::asio;` neither of which are ideal.
---
 include/boost/asio/handler_type.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/asio/handler_type.hpp b/include/boost/asio/handler_type.hpp
index e4f2de88..ea96b149 100644
--- a/include/boost/asio/handler_type.hpp
+++ b/include/boost/asio/handler_type.hpp
@@ -109,6 +109,6 @@ struct handler_type<ReturnType(Arg1, Arg2, Arg3, Arg4, Arg5), Signature>
 #include <boost/asio/detail/pop_options.hpp>
 
 #define BOOST_ASIO_HANDLER_TYPE(h, sig) \
-  typename handler_type<h, sig>::type
+  typename ::boost::asio::handler_type<h, sig>::type
 
 #endif // BOOST_ASIO_HANDLER_TYPE_HPP