Support CLI arguments, exclude routes, DNS and MTU for Windows

[kayrus]

Hi, I'm working on a similar project fork (https://github.com/eycorsican/go-tun2socks). I implemented some features I missed, but the upstream project is based on LwIP stack, which I don't like.

I'd happy to switch to your project, but it doesn't support features listed below:

• MTU set for Windows (wireguard doesn't set it by default)
• Exclude routes (CLI arg + config)
• It would be nice if you make config file to be optional and allow specifying parameters via CLI args as well

I prepared a package to support this stuff: https://github.com/kayrus/tuncfg
Let me know if you want to embed it into your project

[imgk]

• It is possible to add an option of setting MTU and DNS and it is easy to implement. PR is welcome.
• Modifying the route table is complicated. Currently, shadow just supports adding an entry. But I'm not sure how to implement excluding routes.
• As the main function is quite simple now. If you want to pass arguments via CLI, I suggest you write a customized main.go. I want to keep shadow simple and won't add too many args.

[kayrus]

Modifying the route table is complicated. Currently, shadow just supports adding an entry. But I'm not sure how to implement excluding routes

excluding routes is already implemented in my module

[imgk]

Setting DNS is just applicable for Windows. So I won't add this feature. Setting MTU is fine. However, I DO not think it is necessary. I think adding an option to run PostUp and PostDown is a better way to modify the route table for excluding routes.

I have read your method about excluding routes. I doubt that adding these route entries may conflict with original ones.

[ghost]

Hi, I'm working on a similar project fork (https://github.com/eycorsican/go-tun2socks). I implemented some features I missed, but the upstream project is based on LwIP stack, which I don't like.

I'd happy to switch to your project, but it doesn't support features listed below:

• MTU set for Windows (wireguard doesn't set it by default)
• Exclude routes (CLI arg + config)
• It would be nice if you make config file to be optional and allow specifying parameters via CLI args as well

I prepared a package to support this stuff: https://github.com/kayrus/tuncfg
Let me know if you want to embed it into your project

何必纠结LwIP？tun2socks其实最难受的还是需要手动安装一次虚拟网卡，好像叫tap-windows。相比之下还是本项目的作者更为简单直接，一套cmd直接带走。