Add dedicated server runtime

tests/dedicated_host_session_validation.gd

@@ -0,0 +1,51 @@
+extends SceneTree
+
+const TEST_PORT: int = 35777
+
+
+func _init() -> void:
+	call_deferred("_run")
+
+
+func _run() -> void:
+	var harness := Node.new()
+	root.add_child(harness)
+	var players := Node3D.new()
+	harness.add_child(players)
+	var spawn_service := PlayerSpawnService.new()
+	harness.add_child(spawn_service)
+	spawn_service.setup(players, null, Transform3D.IDENTITY)
+	var host_identity := HostIdentityStore.new()
+	harness.add_child(host_identity)
+	var known_players := KnownPlayerStore.new()
+	harness.add_child(known_players)
+	var host_bans := HostBanStore.new()
+	harness.add_child(host_bans)
+	var session := NetworkSession.new()
+	harness.add_child(session)
+	await process_frame
+	session.setup(
+		null,
+		null,
+		spawn_service,
+		null,
+		host_identity,
+		known_players,
+		null,
+		host_bans,
+		true,
+	)
+	assert(session.start_dedicated_host(TEST_PORT, 5, "127.0.0.1"))
+	assert(session.is_dedicated_host())
+	assert(session.get_local_peer_id() == 0)
+	assert(session.get_player_count() == 0)
+	assert(session.get_session_max_players() == 5)
+	assert(session.get_host_port() == TEST_PORT)
+	assert(session.set_host_open(true))
+	assert(session.is_open_host())
+	session.disconnect_session("Dedicated host validation complete.")
+	assert(not session.is_session_active())
+	assert(not session.is_dedicated_host())
+	harness.queue_free()
+	print("DEDICATED_HOST_SESSION_VALIDATION_OK")
+	quit(0)