Add virtual registerHandlers() in Http2Server

Called from serve() after the generic handler registration and before
listen_and_serve(). Allows derived classes to register path-specific
handlers on the nghttp2 server object.

Author: testillano

include/ert/http2comm/Http2Server.hpp

@@ -353,6 +353,13 @@ class Http2Server
         return std::chrono::milliseconds::zero();
     }
 
+    /**
+    * Virtual hook called after the generic handler is registered but before
+    * listen_and_serve(). Derived classes can override to register additional
+    * path-specific handlers on server_.
+    */
+    virtual void registerHandlers() {}
+
     /**
     * Server start
     *

src/Http2Server.cpp

@@ -286,6 +286,7 @@ int Http2Server::serve(const std::string &bind_address,
     boost::system::error_code ec;
 
     server_.handle("/", handler());
+    registerHandlers(); // virtual hook for derived classes to register additional handlers
     server_.num_threads(numberThreads);
     server_.read_timeout(readKeepAlive);