diff --git a/CMakeLists.txt b/CMakeLists.txt
index af65d15c..25fd3b04 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,9 +1,19 @@
 cmake_minimum_required(VERSION 3.11 FATAL_ERROR)
+
+if(NOT DEFINED PROJECT_NAME)
+    set(BUILD_AS_STANDALONE ON)
+endif()
+
 project(enduro2d)
 
 set(E2D_SYSTEM_NAME ${CMAKE_SYSTEM_NAME})
 set(E2D_ROOT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 
+if(NOT BUILD_AS_STANDALONE)
+    set(E2D_SYSTEM_NAME ${E2D_SYSTEM_NAME} PARENT_SCOPE)
+    set(E2D_ROOT_DIRECTORY ${E2D_ROOT_DIRECTORY} PARENT_SCOPE)
+endif()
+
 set(E2D_ALL_C_CONFIGS "CMAKE_C_FLAGS")
 set(E2D_ALL_CXX_CONFIGS "CMAKE_CXX_FLAGS")
 
@@ -139,18 +149,21 @@ file(GLOB_RECURSE E2D_3RDPARTY
 set(USE_STATIC_CRT ${E2D_BUILD_WITH_STATIC_CRT} CACHE INTERNAL "" FORCE)
 set(USE_SYSTEM_CURL OFF CACHE INTERNAL "" FORCE)
 set(USE_EMBEDDED_CURL ON CACHE INTERNAL "" FORCE)
+
 add_subdirectory(modules/curly.hpp)
 set_target_properties(curly.hpp libcurl PROPERTIES FOLDER modules)
 
-set(GLFW_INSTALL OFF CACHE BOOL "" FORCE)
-set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
-set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
-set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
+set(GLFW_INSTALL OFF CACHE INTERNAL "" FORCE)
+set(GLFW_BUILD_DOCS OFF CACHE INTERNAL "" FORCE)
+set(GLFW_BUILD_TESTS OFF CACHE INTERNAL "" FORCE)
+set(GLFW_BUILD_EXAMPLES OFF CACHE INTERNAL "" FORCE)
+
 add_subdirectory(modules/glfw)
 set_target_properties(glfw PROPERTIES FOLDER modules)
 
-set(glew-cmake_BUILD_SHARED OFF CACHE BOOL "" FORCE)
-set(glew-cmake_BUILD_MULTI_CONTEXT OFF CACHE BOOL "" FORCE)
+set(glew-cmake_BUILD_SHARED OFF CACHE INTERNAL "" FORCE)
+set(glew-cmake_BUILD_MULTI_CONTEXT OFF CACHE INTERNAL "" FORCE)
+
 add_subdirectory(modules/glew)
 set_target_properties(libglew_static PROPERTIES FOLDER modules)
 
diff --git a/LICENSE.md b/LICENSE.md
index 9a7e4549..7b1f40a3 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2018 Matvey Cherevko
+Copyright (C) 2018-2019, by Matvey Cherevko (blackmatov@gmail.com)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/ROADMAP.md b/ROADMAP.md
index adc02490..ea5155fd 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -112,14 +112,13 @@
 
 - ### `advanced core`
 
-  - [ ] `audio`
+  - [x] `audio`
     ```
     vorbis, streaming
     ```
-    
-  - [ ] `network`
+
+  - [x] `network`
     ```
-    tcp/udp sockets
     http/https requests
     ```
 
@@ -132,7 +131,6 @@
     ```
 
   - [ ] `debug`
-
     ```
     system profilers
     hot library reloading
@@ -145,8 +143,7 @@
     component processing and joins
     ```
 
-  - [ ] `game objects`
-
+  - [x] `game objects`
     ```
     entity prefabs
     smart entity wrapper
@@ -171,4 +168,3 @@
     ```
     downloadable resource packs
     ```
-
diff --git a/sources/enduro2d/core/network.cpp b/sources/enduro2d/core/network.cpp
index 6a6f234d..f8bea6a7 100644
--- a/sources/enduro2d/core/network.cpp
+++ b/sources/enduro2d/core/network.cpp
@@ -39,8 +39,12 @@ namespace e2d
             }
             if ( request.status() == net::req_status::cancelled ) {
                 promise.reject(request_cancelled_exception());
-            } else {
+                return;
+            }
+            try {
                 promise.reject(request_network_error(request.get_error()));
+            } catch (...) {
+                promise.reject(request_network_error());
             }
         });
         return {rb.send(), std::move(promise)};