init

CMakeLists.txt

+cmake_minimum_required(VERSION 3.5)
+project(UDPForwarder)
+
+set(CMAKE_CXX_STANDARD 17)
+
+set(CMAKE_CXX_FLAGS_DEBUG "-g -DMALLOC_CHECK_=2")
+set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+
+if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-user-defined-literals")
+elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-literal-suffix -Wno-terminate")
+elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel")
+  # using Intel C++
+elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
+  # using Visual Studio C++
+endif()
+
+string(TIMESTAMP _COMPILE_TIME %Y-%m-%dT%H:%M:%SZ UTC)
+add_definitions(-DCOMPILE_TIME=${_COMPILE_TIME})
+
+set(CMAKE_VERBOSE_MAKEFILE ON)
+set(THREADS_PREFER_PTHREAD_FLAG ON)
+
+# MacOS has no MSG_NOSIGNAL define? I'm not sure if this will lead to EPIPE.
+if(APPLE)
+    add_definitions(-DMSG_NOSIGNAL=0)
+endif()
+
+include_directories(./src)
+include_directories(./src/lib)
+
+# TODO
+set(SRC )
+
+add_executable(udp-forwarder ${SRC})
+
+# target_link_libraries(udp-forwarder -static-libgcc -static-libstdc++)
+#if(FOR_M32)
+#    set_target_properties(... PROPERTIES COMPILE_FLAGS -m32 LINK_FLAGS -m32 )
+#endif(FOR_M32)
+

README.md

+# UDP forwarder - dynPort
+
+Create a UDP tunnel to forward a udp port. The tunnel applies some magic to trick the noob Great Firewall deep learning VPN
+detection. 
+
+Inspired by a naive udp-forward. I want to test what would happen, if I change the UDP server port number once a minute. 
+(The GFW take 15 minutes to ban my OpenVPN UDP connection)
+
+## Design
+
+![explain.png](https://raw.githubusercontent.com/recolic/udp_forwarder_ng/master/res/explain.png)
+
+## Build
+
+```
+mkdir build && cd build
+cmake .. && make
+./udp_forwarder_ng [args ...]
+```
+
+## Common Deployment
+
+![solu.png](https://raw.githubusercontent.com/recolic/udp_forwarder_ng/master/res/solu.png)
+