tauri-workspace/docs/guides/patterns/bridge.md

---

title: Bridge

import Rater from '@theme/Rater' import useBaseUrl from '@docusaurus/useBaseUrl'

Ease of Use
Extensibility
Performance
Security

Pros:

• Highly configurable
• No Rust skills required

Cons:

• Some WebAPIs unavailable
• Challenge to implement

Description

The Bridge recipe is a secure pattern where messages are passed between brokers via an implicit bridge using the API. It isolates functionality to scope and passes messages instead of functionality.

Diagram

import Mermaid, { colors } from '@theme/Mermaid'

<Mermaid chart={`graph TD

  H==>F
  subgraph WEBVIEW
  F-.-E
  end
  D-->E
  E-->D
  B-->D
  D-->B
  subgraph RUST
  A==>H
  A-->B
  B-.-C
  B-.-G
  end
  A[Binary]
  B{Rust Broker}
  C[Subprocess 2]
  G[Subprocess 1]
  D(( API BRIDGE ))
  E{JS Broker}
  F[Window]
  H{Bootstrap}
  style D fill:#ccc,stroke:#333,stroke-width:4px,color:white
  style RUST fill:${colors.orange.light},stroke:${colors.orange.dark},stroke-width:4px
  style WEBVIEW fill:${colors.blue.light},stroke:${colors.blue.dark},stroke-width:4px`} />

Configuration

Here's what you need to add to your tauri.conf.json file:

"tauri": {
  "allowlist": {                  // all API values are default false
    "all": false,                 // use this flag to enable all API features
    "shell": {
      "execute": false,             // enable application execution
      "open": false,                // open link/path in the default app
    },
    "fs": {
      "listFiles": false,           // list files in a directory
      "readBinaryFile": false,      // read binary file from local filesystem
      "readTextFile": false,        // read text file from local filesystem
      "setTitle": false,            // set the window title
      "writeFile": false            // write file to local filesystem
    }
  }
}