feat: Integrate new webserver (#1722)

For #919.
The new web server is not using dosguard yet. It will be fixed by a
separate PR.

src/web/interface/Concepts.hpp

@@ -19,8 +19,6 @@
 
 #pragma once
 
-#include "web/interface/ConnectionBase.hpp"
-
 #include <boost/beast.hpp>
 #include <boost/beast/core/error.hpp>
 
@@ -29,6 +27,8 @@
 
 namespace web {
 
+struct ConnectionBase;
+
 /**
  * @brief Specifies the requirements a Webserver handler must fulfill.
  */

src/web/interface/ConnectionBase.hpp

@@ -20,13 +20,13 @@
 #pragma once
 
 #include "util/Taggable.hpp"
+#include "web/SubscriptionContextInterface.hpp"
 
 #include <boost/beast/http.hpp>
 #include <boost/beast/http/status.hpp>
 #include <boost/signals2.hpp>
 #include <boost/signals2/variadic_signal.hpp>
 
-#include <cstdint>
 #include <memory>
 #include <stdexcept>
 #include <string>
@@ -49,13 +49,6 @@ protected:
 public:
     std::string const clientIp;
     bool upgraded = false;
-    boost::signals2::signal<void(ConnectionBase*)> onDisconnect;
-    /**
-     * @brief The API version of the web stream client.
-     * This is used to track the api version of this connection, which mainly is used by subscription. It is different
-     * from the api version in Context, which is only used for the current request.
-     */
-    std::uint32_t apiSubVersion = 0;
 
     /**
      * @brief Create a new connection base.
@@ -68,11 +61,6 @@ public:
     {
     }
 
-    ~ConnectionBase() override
-    {
-        onDisconnect(this);
-    };
-
     /**
      * @brief Send the response to the client.
      *
@@ -94,6 +82,15 @@ public:
         throw std::logic_error("web server can not send the shared payload");
     }
 
+    /**
+     * @brief Get the subscription context for this connection.
+     *
+     * @param factory Tag TagDecoratorFactory to use to create the context.
+     * @return The subscription context for this connection.
+     */
+    virtual SubscriptionContextPtr
+    makeSubscriptionContext(util::TagDecoratorFactory const& factory) = 0;
+
     /**
      * @brief Indicates whether the connection had an error and is considered dead.
      *