Connection and websockets fixes

This commit fixes issue around Connection class and websockets
  - controlling connection lifetime by shared_ptr instead of manual new/delete
  - fixed memory leak when upgrading connection to websockets
  - removed dangling reference to conn.req in websockets
  - fixed lack of reponse for invalid websockets URLs
  - fixed not working connections deadline timer

There is no noticable performance impact after switching connection management
to shared pointers. Benchmark results using: wrk https://${bmc}
	shared_ptr: 144.29 Requests/sec
	new/delete: 144.41 Requests/sec

Tested manually:
	performance: wrk https://${bmc}
	memory leaks: top
	websockets: webui- KVM and VirtualMedia
	HTTP GET on random Redfish schemas: postman

Signed-off-by: Jan Sowinski <jan.sowinski@intel.com>
Change-Id: I63f7395ba081a68e7900eae2ed204acd50f58689
diff --git a/http/routing.h b/http/routing.h
index f194ad1..c2a7503 100644
--- a/http/routing.h
+++ b/http/routing.h
@@ -324,19 +324,19 @@
         res.end();
     }
 
-    void handleUpgrade(const Request& req, Response& res,
+    void handleUpgrade(const Request& req, Response&,
                        boost::asio::ip::tcp::socket&& adaptor) override
     {
         std::shared_ptr<
             crow::websocket::ConnectionImpl<boost::asio::ip::tcp::socket>>
             myConnection = std::make_shared<
                 crow::websocket::ConnectionImpl<boost::asio::ip::tcp::socket>>(
-                req, res, std::move(adaptor), openHandler, messageHandler,
+                req, std::move(adaptor), openHandler, messageHandler,
                 closeHandler, errorHandler);
         myConnection->start();
     }
 #ifdef BMCWEB_ENABLE_SSL
-    void handleUpgrade(const Request& req, Response& res,
+    void handleUpgrade(const Request& req, Response&,
                        boost::beast::ssl_stream<boost::asio::ip::tcp::socket>&&
                            adaptor) override
     {
@@ -344,7 +344,7 @@
             boost::beast::ssl_stream<boost::asio::ip::tcp::socket>>>
             myConnection = std::make_shared<crow::websocket::ConnectionImpl<
                 boost::beast::ssl_stream<boost::asio::ip::tcp::socket>>>(
-                req, res, std::move(adaptor), openHandler, messageHandler,
+                req, std::move(adaptor), openHandler, messageHandler,
                 closeHandler, errorHandler);
         myConnection->start();
     }