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fix: devtools not working over LAN when using --public - #1148
Collect non-loopback origins from Nuxt's listener and pass them to Vite DevTools' allowedOrigins so the WebSocket accepts connections from LAN hosts when the server is exposed via --public / --host.
I always run my Nuxt project on one machine and test from a couple other devices on the same network. Ever since upgrading to DevTools v4, opening the panel from a LAN IP just doesn't work — the WebSocket gets rejected because allowedOrigins only has localhost.
Turns out the listen hook already has access to all the URLs Nuxt is bound to, so we just need to grab the non-loopback ones and pass them along to Vite DevTools. That's basically all this does.
In packages/devtools/src/module-main.ts:
Added isLoopbackHost() to filter out localhost / 127.x / ::1
Added collectAllowedOrigins() which reads from the listener, or from a NUXT_DEVTOOLS_ALLOWED_ORIGINS env var if you want to override manually (handy for --tunnel setups)
Made the listen hook async so it can call getURLs()
Passed the collected origins into both the Vite 8.3+ config path and the DevTools() fallback
…t#1118)
Collect non-loopback origins from Nuxt's listener and pass them to
Vite DevTools' `allowedOrigins` so the WebSocket accepts connections
from LAN hosts when the server is exposed via --public / --host.
DevTools client assets are now discovered from the package peer dependency, including nightly package aliases. The module collects allowed origins from NUXT_DEVTOOLS_ALLOWED_ORIGINS or from listener URLs, excluding malformed URLs and loopback hosts. The listen hook uses the first collected origin as the public DevTools origin. Vite 8.3+ configuration and the legacy DevTools plugin receive the collected origins.
The change makes DevTools work from LAN hosts, but when a LAN origin is discovered it overwrites any origins the user had already allowed. Merge the discovered origins into the existing list before merging this.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
Check name
Status
Explanation
Resolution
Docstring Coverage
Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documenta…
Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed checks: 4 passed
Check name
Status
Explanation
Title check
The title clearly describes the main fix: DevTools now works over a LAN when Nuxt uses --public. It is concise and follows the conventional commit format.
Description check
The description directly explains the LAN WebSocket issue, the allowedOrigins changes, the environment variable override, and the affected configuration paths.
Linked Issues check
Issue [#1118] requires DevTools to accept the same non-loopback hosts as Nuxt when the app uses --public or --host. packages/devtools/src/module-main.ts reads listener URLs with getURLs(), fil…
Out of Scope Changes check
The change is limited to packages/devtools/src/module-main.ts. The listener-origin collection, loopback filtering, Vite configuration, fallback configuration, and tunnel override all support the Dev…
Full details: Linked Issues check
Explanation
Issue [#1118] requires DevTools to accept the same non-loopback hosts as Nuxt when the app uses --public or --host. packages/devtools/src/module-main.ts reads listener URLs with getURLs(), filters loopback hosts, and passes the resulting origins to both the Vite 8.3+ configuration path and the DevTools() fallback. The NUXT_DEVTOOLS_ALLOWED_ORIGINS override also supports the tunnel case noted in [#1118].
Full details: Out of Scope Changes check
Explanation
The change is limited to packages/devtools/src/module-main.ts. The listener-origin collection, loopback filtering, Vite configuration, fallback configuration, and tunnel override all support the DevTools WebSocket host requirement in [#1118]. No unrelated change is shown.
Full details: Docstring Coverage
Explanation
Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 3 functions across 1 files.
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Inline comments:
Review comments at @packages/devtools/src/module-main.ts:
- Line 237: Update the assignment to devtools.allowedOrigins so it merges the
existing configured origins with lanAllowedOrigins instead of replacing them,
preserving user-configured origins and avoiding duplicates.
After applying the fix, consider running `coderabbit review --agent` for local
review. Visit https://docs.coderabbit.ai/cli?utm_source=ghpr
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packages/devtools/src/module-main.ts
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<source_evidence>
<source kind="search">
<title>vite/packages/vite/src/node/config.ts at main · vitejs/vite · GitHub</title>
<location>https://github.com/vitejs/vite/blob/main/packages/vite/src/node/config.ts</location>
<excerpt>citeturn0search0 [wordlim: 200] Crawled: yesterday; const { isDevToolsEnabled, normalizeDevToolsConfig } =
await import('@vitejs/devtools/config')
export function defineConfig(config: Promise<UserConfig>): Promise<UserConfig>
export function defineConfig(config: UserConfigFnObject): UserConfigFnObject
export function defineConfig(config: UserConfigFnPromise): UserConfigFnPromise
export function defineConfig(config: UserConfigFn): UserConfigFn
export function defineConfig(config: UserConfigExport): UserConfigExport
export function defineConfig(config: UserConfigExport): UserConfigExport {
return config
}
export interface CreateDevEnvironmentContext {
ws: WebSocketServer
}
export interface DevEnvironmentOptions {
/**
* Files to be pre-transformed. Supports glob patterns.
*/
warmup?: string[]
/**
* Pre-transform known direct imports
* defaults to true for the client environment, false for the rest
*/
preTransformRequests?: boolean
/**
* Enables sourcemaps during dev
* @default { js: true }
* @experimental
*/
sourcemap?: boolean | { js?: boolean; css?: boolean }
/**
* Whether or not to ignore-list source files in the dev server sourcemap, used to populate
>
}
/**
* Dep optimization options
*/
optimizeDeps?: DepOptimizationOptions
/**
* SSR specific options
* We could make SSROptions be a EnvironmentOptions if we can abstract
* external/noExternal for environments in general.
*/
ssr?: SSROptions
/**
* Environment overrides
*/
environments?: Record<string, EnvironmentOptions>
/**
* Whether your application is a Single Page Application (SPA),
* a Multi-Page Application (MPA), or Custom Application (SSR
* and frameworks with custom HTML handling)
* @default 'spa'
*/
appType?: AppType
/**
* Enable devtools integration. Ensure that `@vitejs/devtools` is installed as a dependency.
* @experimental
* @default false
*/
devtools?: boolean | DevToolsConfig
}
export interface HTMLOptions {
/**
* A nonce value placeholder that will be used when generating script/style tags.
*
* Make sure that this placeholder will be replaced with a unique value for each request by the server.
*/
cspNonce?: string
/**
* Define additional HTML elements and attributes to be treated as asset sources.
* @default false
*/
bundledDev?: boolean
}
export interface LegacyOptions {
/**
* In Vite 6.0.8 and below, WebSocket server was able to connect from any web pages. However,
* that could be exploited by a malicious web page.
*
* In Vite 6.0.9+, the WebSocket server now requires a token to connect from a web page.
* But this may break some plugins and frameworks that connects to the WebSocket server
* on their own. Enabling this option will make Vite skip the token check.
*
* **We do not recommend enabling this option unless you are sure that you are fine with
* that security weakness.**
*/
skipWebSocketTokenCheck?: boolean
/**
* Opt-in to the pre-Vite 8 CJS interop behavior, which was inconsistent.
*
* In pre-Vite 8 versions, Vite had inconsistent CJS interop behavior. This was due to
* the different behavior of esbuild and the Rollup commonjs plugin.
* Vite 8+ uses Rolldown for both the dependency optimization in dev and the production build,
* which aligns the behavior to esbuild.
*
* See the Vite 8 migration guide for more details.
*/
inconsistentCjsInterop?: boolean
}
*
* @deprecated
*/
webSocketToken: string
/** @internal */
fsDenyGlob: AnymatchFn
/** @internal */
safeModulePaths: Set<string>
/** @internal */
[SYMBOL_RESOLVED_CONFIG]: true
} & PluginHookUtils
> {}
function isDevToolsOptionEnabled(
config: DevToolsConfig | boolean | undefined,
): boolean {
return (
config === true ||
(typeof config === 'object' && config != null && config.enabled !== false)
)
}
export async function resolveDevToolsConfig(
config: DevToolsConfig | boolean | undefined,
command: 'serve' | 'build',
): Promise<ResolvedDevToolsConfig | false> {
if (!isDevToolsOptionEnabled(config)) {
return false
}
const { isDevToolsEnabled, normalizeDevToolsConfig } =
await import('@vitejs/devtools/config')
const resolved = normalizeDevToolsConfig(config, undefined)
return isDevToolsEnabled(resolved, command) ? resolved : false
}
interface DevToolsIntegrationState {
plugins: Plugin[]
resolvedConfig: ResolvedDevToolsConfig
}
async function loadDevToolsIntegrationPlugins(
config: UserConfig,
command: 'serve' | 'build',
options: boolean | DevToolsConfig | undefined,
): Promise<DevToolsIntegrationState | undefined> {
try {
const resolved = await resolveDevToolsConfig(options, command)
if (!resolved) return
const { DevToolsIntegration } = await import('@vitejs/devtools/integration')
const plugins = await DevToolsIntegration({
command,
devtools: { options },
})
return {
plugins,
resolvedConfig: resolved,
}
} catch (error: any) {
const logger = createLogger(config.logLevel, {
allowClearScreen: config.clearScreen,
customLogger: config.customLogger,
})
logger.error(
colors.red(
`Failed to load Vite DevTools integration: ${error?.message || error?.stack}`,
),
{ error },
)
}
}
// inferred ones are omitted
const configDefaults = Object.freeze({
define: {},
dev: {
warmup: [],
// preTransformRequests
/** @experimental */
sourcemap: { js: true },
sourcemapIgnoreList: undefined,
// createEnvironment
// recoverable
// moduleRunnerTransform
},
build: buildEnvironmentOptionsDefaults,
</excerpt>
</source>
<source kind="search">
<title>@vitejs/devtools - npm</title>
<location>https://www.npmjs.com/package/%40vitejs/devtools</location>
<excerpt>citeturn0search3 [wordlim: 200] Crawled: last week; 0.8.0 • Public • Published 3 days ago ... github.com/vitejs/devtools
# @vitejs/devtools
Image: This package contains built-in TypeScript declarations
0.8.0 • Public • Published 3 days ago
* Readme
* Code Beta
* 16 Dependencies
* 10 Dependents
* 89 Versions
# @vitejs/devtools
Vite plugin + CLI for Vite DevTools — the dock UI for inspecting your Vite dev server and its built-in integrations.
📖 Documentation
## Readme
### Keywords
* vite
* vite-plugin
* devtools
* rpc
## Package Sidebar
### Install
`npm i @vitejs/devtools`
### Repository
github.com/vitejs/devtools
### Homepage
github.com/vitejs/devtools#readme
### Weekly Downloads
197,335
### Version
0.8.0
### License
MIT
### Last publish
3 days ago</excerpt>
</source>
<source kind="search">
<title>vite/packages/vite/src/node/config.ts at main · vitejs/vite · GitHub</title>
<location>https://github.com/vitejs/vite/blob/main/packages/vite/src/node/config.ts</location>
<excerpt>citeturn2search0 [wordlim: 200] Crawled: yesterday; const { isDevToolsEnabled, normalizeDevToolsConfig } =
await import('@vitejs/devtools/config')
export function defineConfig(config: Promise<UserConfig>): Promise<UserConfig>
export function defineConfig(config: UserConfigFnObject): UserConfigFnObject
export function defineConfig(config: UserConfigFnPromise): UserConfigFnPromise
export function defineConfig(config: UserConfigFn): UserConfigFn
export function defineConfig(config: UserConfigExport): UserConfigExport
export function defineConfig(config: UserConfigExport): UserConfigExport {
return config
}
export interface CreateDevEnvironmentContext {
ws: WebSocketServer
}
export interface DevEnvironmentOptions {
/**
* Files to be pre-transformed. Supports glob patterns.
*/
warmup?: string[]
/**
* Pre-transform known direct imports
* defaults to true for the client environment, false for the rest
*/
preTransformRequests?: boolean
/**
* Enables sourcemaps during dev
* @default { js: true }
* @experimental
*/
sourcemap?: boolean | { js?: boolean; css?: boolean }
/**
* Whether or not to ignore-list source files in the dev server sourcemap, used to populate
>
}
/**
* Dep optimization options
*/
optimizeDeps?: DepOptimizationOptions
/**
* SSR specific options
* We could make SSROptions be a EnvironmentOptions if we can abstract
* external/noExternal for environments in general.
*/
ssr?: SSROptions
/**
* Environment overrides
*/
environments?: Record<string, EnvironmentOptions>
/**
* Whether your application is a Single Page Application (SPA),
* a Multi-Page Application (MPA), or Custom Application (SSR
* and frameworks with custom HTML handling)
* @default 'spa'
*/
appType?: AppType
/**
* Enable devtools integration. Ensure that `@vitejs/devtools` is installed as a dependency.
* @experimental
* @default false
*/
devtools?: boolean | DevToolsConfig
}
export interface HTMLOptions {
/**
* A nonce value placeholder that will be used when generating script/style tags.
*
* Make sure that this placeholder will be replaced with a unique value for each request by the server.
*/
cspNonce?: string
/**
* Define additional HTML elements and attributes to be treated as asset sources.
* @default false
*/
bundledDev?: boolean
}
export interface LegacyOptions {
/**
* In Vite 6.0.8 and below, WebSocket server was able to connect from any web pages. However,
* that could be exploited by a malicious web page.
*
* In Vite 6.0.9+, the WebSocket server now requires a token to connect from a web page.
* But this may break some plugins and frameworks that connects to the WebSocket server
* on their own. Enabling this option will make Vite skip the token check.
*
* **We do not recommend enabling this option unless you are sure that you are fine with
* that security weakness.**
*/
skipWebSocketTokenCheck?: boolean
/**
* Opt-in to the pre-Vite 8 CJS interop behavior, which was inconsistent.
*
* In pre-Vite 8 versions, Vite had inconsistent CJS interop behavior. This was due to
* the different behavior of esbuild and the Rollup commonjs plugin.
* Vite 8+ uses Rolldown for both the dependency optimization in dev and the production build,
* which aligns the behavior to esbuild.
*
* See the Vite 8 migration guide for more details.
*/
inconsistentCjsInterop?: boolean
}
*
* @deprecated
*/
webSocketToken: string
/** @internal */
fsDenyGlob: AnymatchFn
/** @internal */
safeModulePaths: Set<string>
/** @internal */
[SYMBOL_RESOLVED_CONFIG]: true
} & PluginHookUtils
> {}
function isDevToolsOptionEnabled(
config: DevToolsConfig | boolean | undefined,
): boolean {
return (
config === true ||
(typeof config === 'object' && config != null && config.enabled !== false)
)
}
export async function resolveDevToolsConfig(
config: DevToolsConfig | boolean | undefined,
command: 'serve' | 'build',
): Promise<ResolvedDevToolsConfig | false> {
if (!isDevToolsOptionEnabled(config)) {
return false
}
const { isDevToolsEnabled, normalizeDevToolsConfig } =
await import('@vitejs/devtools/config')
const resolved = normalizeDevToolsConfig(config, undefined)
return isDevToolsEnabled(resolved, command) ? resolved : false
}
interface DevToolsIntegrationState {
plugins: Plugin[]
resolvedConfig: ResolvedDevToolsConfig
}
async function loadDevToolsIntegrationPlugins(
config: UserConfig,
command: 'serve' | 'build',
options: boolean | DevToolsConfig | undefined,
): Promise<DevToolsIntegrationState | undefined> {
try {
const resolved = await resolveDevToolsConfig(options, command)
if (!resolved) return
const { DevToolsIntegration } = await import('@vitejs/devtools/integration')
const plugins = await DevToolsIntegration({
command,
devtools: { options },
})
return {
plugins,
resolvedConfig: resolved,
}
} catch (error: any) {
const logger = createLogger(config.logLevel, {
allowClearScreen: config.clearScreen,
customLogger: config.customLogger,
})
logger.error(
colors.red(
`Failed to load Vite DevTools integration: ${error?.message || error?.stack}`,
),
{ error },
)
}
}
// inferred ones are omitted
const configDefaults = Object.freeze({
define: {},
dev: {
warmup: [],
// preTransformRequests
/** @experimental */
sourcemap: { js: true },
sourcemapIgnoreList: undefined,
// createEnvironment
// recoverable
// moduleRunnerTransform
},
build: buildEnvironmentOptionsDefaults,
</excerpt>
</source>
<source kind="search">
<title>vite/docs/config/shared-options.md at main · vitejs/vite · GitHub</title>
<location>https://github.com/vitejs/vite/blob/main/docs/config/shared-options.md</location>
<excerpt>citeturn0search1 [wordlim: 200] Crawled: 2 days ago; Install `@vitejs/devtools-vite` to inspect the Vite dev server and `@vitejs/devtools-rolldown` to enable build analysis. ... import { defineConfig } from 'vite'
## envPrefix
* Type: `string | string[]`
* Default: `VITE_`
Env variables starting with `envPrefix` will be exposed to your client source code via `import.meta.env`.
:::warning SECURITY NOTES `envPrefix` should not be set as `''`, which will expose all your env variables and cause unexpected leaking of sensitive information. Vite will throw an error when detecting `''`.
If you would like to expose an unprefixed variable, you can use define to expose it:
define: {
'import.meta.env.ENV_VARIABLE': JSON.stringify(process.env.ENV_VARIABLE)
}
:::
## appType
* Type: `'spa' | 'mpa' | 'custom'`
* Default: `'spa'`
Whether your application is a Single Page Application (SPA), a Multi Page Application (MPA), or Custom Application (SSR and frameworks with custom HTML handling):
* `'spa'`: include HTML middlewares and use SPA fallback. Configure sirv with `single: true` in preview
* `'mpa'`: include HTML middlewares
* `'custom'`: don't include HTML middlewares
Learn more in Vite's SSR guide. Related: `server.middlewareMode`.
## devtools
* Experimental: Give Feedback
* Type: `boolean` | `DevToolsConfig`
* Default: `false`
Enable devtools integration for inspecting the dev server and analyzing builds. Ensure that `@vitejs/devtools` is installed as a dependency. Install `@vitejs/devtools-vite` to inspect the Vite dev server and `@vitejs/devtools-rolldown` to enable build analysis. DevTools runs for both `serve` and `build` by default; use `apply` to limit it to either command.
Plugin `config` hooks cannot change the `devtools` option. Set it in the user config instead.
When installed, `@vitejs/devtools` provides the type definitions for this option:
import { defineConfig } from 'vite'
export default defineConfig({
devtools: {
apply: 'serve',
},
})
See Vite DevTools for more details.
</excerpt>
</source>
<source kind="search">
<title>Remote Client | Vite DevTools</title>
<location>https://devtools.vite.dev/kit/remote-client</location>
<excerpt>citeturn0search2 [wordlim: 200] Crawled: yesterday; Ship node-side code only. ... If the token leaks (for example to an external analytics tool that ingests URLs), the wrong origin can't reuse it. ... `connectRemoteDevTools()` reads the descriptor from the current URL, opens the WebSocket, and resolves to a `DevToolsRpcClient` with `.call`, `.callEvent`, `.callOptional`, `.sharedState`, and the rest of the standard API documented in RPC. ... `import { connectRemoteDevTools, parseRemoteConnection } from '@vitejs/devtools-kit/client' ... cacheOptions: { maxAge: 5000 }, ... The WebSocket server runs in dev mode (`vite`); remote-iframe docks skip themselves in static-dump output, so no `when` clause is needed.
2. Injects a connection descriptor — the WS URL, the token, and the user's dev-server origin — into the iframe's `src` attribute.
3. Accepts the token on WebSocket handshake (after verifying the `Origin` header, if origin-lock is on).
On the hosted page, `connectRemoteDevTools()` parses the descriptor out of the URL and returns a fully connected `DevToolsRpcClient` — the same client you'd get from `getDevToolsRpcClient()` in an embedded page.
## Registering a remote dock
ts
`import type { Plugin } from 'vite'
export function myPlugin(): Plugin {
return {
name: 'my-plugin',
devtools: {
setup(ctx) {
ctx.docks.register({
id: 'my-remote-tool',
title: 'My Tool',
icon: 'ph:cloud-duotone',
type: 'iframe',
url: 'https://example.com/devtools',
remote: true,
})
},
},
}
}`
That's the whole node-side change. The dock renders like a regular iframe panel, with the connection descriptor appended invisibly to the URL.
### Options
ts
`interface RemoteDockOptions {
/** @default 'fragment' */
transport?: 'fragment' | 'query'
/** @default true */
originLock?: boolean
}
// in ctx.docks.register({ ... }):
// remote: true
// or:
// remote: { transport: 'query', originLock: false }`
#### `transport`
* `'fragment'` (default) — the descriptor rides as a URL fragment (`#vite-devtools-kit-connection=...`). Fragments stay client-side: they don't reach servers, don't enter access logs, and get stripped from `Referer` on sub-resource requests. The safest place to carry an auth token.
* `'query'` — the descriptor rides as a query parameter (`?vite-devtools-kit-connection=...`). Pick this when your SPA router uses the fragment for navigation, or when your hosting platform / CDN rewrites URLs in a way that drops fragments.
WARNING
With `'query'` transport, the auth token appears in server access logs and outbound `Referer` headers. Use it only when you control the analytics / log pipeline on the hosted origin.
#### `originLock`
When on (default), the WebSocket handshake is rejected if the browser's `Origin` header doesn't match the origin of the registered dock URL. If the token leaks (for example to an external analytics tool that ingests URLs), the wrong origin can't reuse it.
Turn it off only when the same hosted app is served from multiple origins (e.g. preview deploys on `pr-123.preview.example.com`):
ts
`ctx.docks.register({
id: 'my-remote-tool',
title: 'My Tool',
icon: 'ph:cloud-duotone',
type: 'iframe',
url: 'https://example.com/devtools',
remote: { originLock: false },
})`
renderStandaloneLandingPage()
}
else {
const rpc = await connectRemoteDevTools()
renderConnectedUi(rpc)
}`
### Advanced: custom URL / options
`connectRemoteDevTools` forwards any `DevToolsRpcClientOptions` — RPC caching, custom `rpcOptions`, and so on — while keeping `connectionMeta` and `authToken` sourced from the descriptor.
ts
`const rpc = await connectRemoteDevTools({
cacheOptions: { maxAge: 5000 },
})`
For testing or non-browser environments, pass an explicit URL or raw fragment/query string to `parseRemoteConnection`:
ts
`parseRemoteConnection('https://example.com/p#vite-devtools-kit-connection=...')
parseRemoteConnection('?vite-devtools-kit-connection=...')`
## Descriptor shape
The descriptor is a superset of `ConnectionMeta`, so `getDevToolsRpcClient({ connectionMeta })` accepts a parsed descriptor directly:
ts
`interface RemoteConnectionInfo {
v: 1
backend: 'websocket'
/** Full ws:// or wss:// URL. */
websocket: string
authToken: string
/** Dev-server origin, e.g. http://localhost:5173. */
origin: string
}`
It's JSON-encoded and base64url-encoded, then appended to the iframe URL under the parameter name `vite-devtools-kit-connection`.
## Trust boundary
Remote mode extends the following trust chain:
1. The user installs your plugin and opts into DevTools.
2. Your plugin declares a remote URL.
3. DevTools hands the hosted origin a session token scoped to that URL.
Properties of the session token:
* Pre-approved. No interactive "trust this browser?" prompt fires; the user agreed to the integration when they installed the plugin.
* Session-scoped. Stored in memory only and regenerated on every dev-server restart.
* Re-register-scoped. Calling `ctx.docks.register(...)` again for the same id revokes the previous token; live WS clients on the old token receive `devframe:auth:revoked` and become untrusted.
* Origin-locked by default. Only connections whose `Origin` matches the dock URL are accepted.
WARNING
The token rides in the URL — treat it as a session secret. Avoid logging URLs to external services on the hosted page, and prefer `transport: 'fragment'` unless you have a specific reason to use `'query'`.
## Build mode
The WebSocket server runs in dev mode (`vite`); remote-iframe docks skip themselves in static-dump output, so no `when` clause is needed. Add one if you want different visibility in embedded vs. standalone clients:
ts
`ctx.docks.register({
// ...
remote: true,
when: 'clientType == embedded',
})`</excerpt>
</source>
<omitted_sources count="38">Additional source records were omitted from this bounded result.</omitted_sources>
</source_evidence>
Citations:
- 1: https://github.com/vitejs/vite/blob/main/packages/vite/src/node/config.ts?utm_source=openai
- 2: https://www.npmjs.com/package/%40vitejs/devtools?utm_source=openai
Script executed:
set -eu
python3 - <<'PY'import io, json, tarfile, urllib.requestmeta_url = 'https://registry.npmjs.org/@vitejs%2fdevtools/0.8.0'with urllib.request.urlopen(meta_url, timeout=20) as response: meta = json.load(response)tarball_url = meta['dist']['tarball']with urllib.request.urlopen(tarball_url, timeout=30) as response: archive = tarfile.open(fileobj=io.BytesIO(response.read()), mode='r:gz')matches = []for member in archive.getmembers(): if not member.isfile(): continue try: text = archive.extractfile(member).read().decode('utf-8', 'replace') except Exception: continue if 'allowedOrigins' in text: matches.append((member.name, text))if not matches: print('No allowedOrigins occurrence found in @vitejs/devtools@0.8.0')else: for name, text in matches: print(f'--- {name} ---') lines = text.splitlines() for i, line in enumerate(lines): if 'allowedOrigins' not in line: continue start = max(0, i - 8) end = min(len(lines), i + 9) for n in range(start, end): print(f'{n + 1}: {lines[n]}') print()PY
Repository: nuxt/devtools
Length of output: 2938
Preserve user-configured origins.
When lanAllowedOrigins is non-empty, this assignment replaces the user's vite.devtools.allowedOrigins. Vite DevTools adds the configured entries to its built-in loopback allowlist. It does not restore origins removed from the configured array. Therefore, a previously permitted non-loopback origin can lose WebSocket access.
When lanAllowedOrigins is empty, the guard leaves the existing configuration unchanged. Merge the two configured lists instead.
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Review comment at @packages/devtools/src/module-main.ts at line 237:
Update the assignment to devtools.allowedOrigins so it merges the existing
configured origins with lanAllowedOrigins instead of replacing them, preserving
user-configured origins and avoiding duplicates.
After applying the fix, consider running `coderabbit review --agent` for local
review. Visit https://docs.coderabbit.ai/cli?utm_source=ghpr
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Collect non-loopback origins from Nuxt's listener and pass them to Vite DevTools'
allowedOriginsso the WebSocket accepts connections from LAN hosts when the server is exposed via --public / --host.🔗 Linked issue
Resolves #1118
📚 Description
I always run my Nuxt project on one machine and test from a couple other devices on the same network. Ever since upgrading to DevTools v4, opening the panel from a LAN IP just doesn't work — the WebSocket gets rejected because
allowedOriginsonly haslocalhost.Turns out the
listenhook already has access to all the URLs Nuxt is bound to, so we just need to grab the non-loopback ones and pass them along to Vite DevTools. That's basically all this does.In
packages/devtools/src/module-main.ts:isLoopbackHost()to filter out localhost / 127.x / ::1collectAllowedOrigins()which reads from the listener, or from aNUXT_DEVTOOLS_ALLOWED_ORIGINSenv var if you want to override manually (handy for--tunnelsetups)listenhook async so it can callgetURLs()DevTools()fallback