Change the async_write from template to function

Author: EvanCui-zz

Release/include/cpprest/details/http_server_asio.h

@@ -58,6 +58,8 @@ class hostport_listener;
 class connection
 {
 private:
+    typedef void (connection::*ResponseFuncPtr) (const http_response &response, const boost::system::error_code& ec);
+
     std::unique_ptr<boost::asio::ip::tcp::socket> m_socket;
     boost::asio::streambuf m_request_buf;
     boost::asio::streambuf m_response_buf;
@@ -108,8 +110,7 @@ class connection
     void handle_chunked_body(const boost::system::error_code& ec, int toWrite);
     void dispatch_request_to_listener();
     void do_response(bool bad_request);
-    template <typename ClassFuncPtr>
-    void async_write(ClassFuncPtr &&connection_func_ptr, const http_response &response);
+    void async_write(ResponseFuncPtr response_func_ptr, const http_response &response);
     template <typename CompletionCondition, typename Handler>
     void async_read(CompletionCondition &&condition, Handler &&read_handler);
     void async_read_until();

Release/src/http/listener/http_server_asio.cpp

@@ -481,21 +481,20 @@ void connection::handle_body(const boost::system::error_code& ec)
     }
 }
 
-template <typename ClassFuncPtr>
-void connection::async_write(ClassFuncPtr &&connection_func_ptr, const http_response &response)
+void connection::async_write(ResponseFuncPtr response_func_ptr, const http_response &response)
 {
     if (m_ssl_stream)
     {
         boost::asio::async_write(*m_ssl_stream, m_response_buf, [=] (const boost::system::error_code& ec, std::size_t)
         {
-            (this->*connection_func_ptr)(response, ec);
+            (this->*response_func_ptr)(response, ec);
         });
     }
     else
     {
         boost::asio::async_write(*m_socket, m_response_buf, [=] (const boost::system::error_code& ec, std::size_t)
         {
-            (this->*connection_func_ptr)(response, ec);
+            (this->*response_func_ptr)(response, ec);
         });
     }
 }