feat(core): add support to setting a webview proxy, closes #4263

[time-river]

wry has been supported http/socks5 proxy in #1006, which has been merged in commit 3cc4d79.

This patch aims to support its feature.

Related issues from original repository:

• [feat] Proxy support in fetch function in tauri's http API
• [feat] How to set proxy settings for the webview

Related pull request

• feat(http): expose proxy configuration

[FabianLars]

Thanks for contributing!

Apart from the suggested doc change we also need a changefile similar to https://github.com/tauri-apps/tauri/blob/dev/.changes/core-android-proxy-method.md.

Then, i also don't think the explicit example adds much value since it's trying to showcase a single line change.
I would assume people wanting to set up a proxy know how the url should look like. If you don't think so you could add an example to the code doc comment too.

Lastly, we also require all commits to be signed. Here's a guide for that: https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification#ssh-commit-signature-verification - i recommend the ssh approach because i think it's easier. A guide for gpg is right above that though.
Once you set up the code signing you can do git commit --amend && git push --force to update this PR

[time-river]

Thanks for contributing!

Apart from the suggested doc change we also need a changefile similar to https://github.com/tauri-apps/tauri/blob/dev/.changes/core-android-proxy-method.md.

Then, i also don't think the explicit example adds much value since it's trying to showcase a single line change. I would assume people wanting to set up a proxy know how the url should look like. If you don't think so you could add an example to the code doc comment too.

Lastly, we also require all commits to be signed. Here's a guide for that: https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification#ssh-commit-signature-verification - i recommend the ssh approach because i think it's easier. A guide for gpg is right above that though. Once you set up the code signing you can do git commit --amend && git push --force to update this PR

Thanks. I fix the above questions. Is it okay now?

[amrbashir]

@FabianLars can you review and approve this again?

[ArcticLampyrid]

Can we have a no_proxy method to skip using system proxy (which is default)?

• For Windows (webview2): we can use --no-proxy-server args to do it.
• For Linux (webkitgtk): use set_network_proxy_settings to set mode WEBKIT_NETWORK_PROXY_MODE_NO_PROXY
• I do not know anything about the impl on MacOS.