How can I retrieve HTTP response headers in Tauri 2?

[xrgfn153]

I'm using the JS API, and after upgrading to version 2.0, the headers I'm receiving are empty. I've tried configuring tauri-plugin-http = { version = "2", features = ["unsafe-headers"] } as per the documentation, but it hasn't worked.

[bryantamayo1]

Hi @xrgfn153!
In my case I have the following configuration (project is developed on Ubuntu 22.04.4 LTS ):


src-tauri/Cargo.toml

[dependencies]
...
tauri = { version = "2.4.1", features = []  }
tauri-plugin-http = { version = "2", features = ["unsafe-headers"] }

More information about "unsafe-headers" in http-client plugin

src-tauri/capabilities/default.json

{
...,
  "permissions": [
    "core:default",
    "http:allow-fetch",
    "http:allow-fetch-cancel",
    "http:allow-fetch-read-body",
    "http:allow-fetch-send",
    {
      "identifier": "http:default",
      "allow": [
        {
          "url": "https://*"
        }
      ]
    }
  ]
}

If you need more information about permissions, this path can help you src-tauri/gen/schemas/desktop-schema.json

src-tauri/src/lib.rs

  ...
  tauri::Builder::default()
  // Add this plugin here
  .plugin(tauri_plugin_http::init())
  .setup(|app| {
    if cfg!(debug_assertions) {
      app.handle().plugin(
        tauri_plugin_log::Builder::default()
          .level(log::LevelFilter::Info)
          .build(),
      )?;
    }
    Ok(())
  })
  .run(tauri::generate_context!())
  .expect("error while running tauri application");
  ...

In your web application, use this:

  ...
  import { fetch} from '@tauri-apps/plugin-http';
  const optionsFetch: RequestInit = {
    method: 'GET',
    responseType: 'Json',
  };
  // More about types in: node_modules/@tauri-apps/plugin-http/dist-js/index.d.ts
  const resp = await fetch('http://your-url', optionsFetch);
  const data = await resp.json();
  ...

My web application has a server with https and nginx, for these reasons it works well. My goal is to achieve the web application works with https and self-signed certificate but unluckily I don't get it 😟. I hope these tips can help you, to be honest, it is really difficult to find information about Tauri v2 since it launched on Octuber 2024.