Index: source/rlinterface/RLInterface.h
===================================================================
--- source/rlinterface/RLInterface.h
+++ source/rlinterface/RLInterface.h
@@ -149,7 +149,7 @@
 	std::string GetGameState() const;
 
 private:
-	GameMessage m_GameMessage;
+	GameMessage m_GameMessage{GameMessageType::None};
 	ScenarioConfig m_ScenarioConfig;
 	std::string m_ReturnValue;
 	bool m_NeedsGameState = false;
@@ -158,6 +158,13 @@
 	std::mutex m_MsgLock;
 	std::condition_variable m_MsgApplied;
 	std::string m_Code;
+
+	struct ContextDeleter
+	{
+		void operator()(mg_context* context) noexcept;
+	};
+
+	const std::unique_ptr<mg_context, ContextDeleter> m_Context;
 };
 
 }
Index: source/rlinterface/RLInterface.cpp
===================================================================
--- source/rlinterface/RLInterface.cpp
+++ source/rlinterface/RLInterface.cpp
@@ -40,17 +40,24 @@
 
 namespace RL
 {
-Interface::Interface(const char* server_address) : m_GameMessage({GameMessageType::None})
+Interface::Interface(const char* server_address) :
+	m_Context{[&]
+		{
+			LOGMESSAGERENDER("Starting RL interface HTTP server");
+			const char *options[] = {
+				"listening_ports", server_address,
+				"num_threads", "1",
+				nullptr
+			};
+			return mg_start(MgCallback, this, options);
+		}()}
+{
+	ENSURE(m_Context);
+}
+
+void Interface::ContextDeleter::operator()(mg_context* context) noexcept
 {
-	LOGMESSAGERENDER("Starting RL interface HTTP server");
-
-	const char *options[] = {
-		"listening_ports", server_address,
-		"num_threads", "1",
-		nullptr
-	};
-	mg_context* mgContext = mg_start(MgCallback, this, options);
-	ENSURE(mgContext);
+	mg_stop(context);
 }
 
 // Interactions with the game engine (g_Game) must be done in the main