mihomo-party-org/clash-party · error

Plugin URL must not contain a fragment

Error message

Plugin URL must not contain a fragment

What it means

parseDownloadUrl rejects URLs containing a fragment (#...) because fragments are client-side pointers and make download identity/caching ambiguous. A URL with a # part throws 'Plugin URL must not contain a fragment'.

Source

Thrown at src/main/resolve/plugin/remote.ts:15

import { getAppConfig } from '../../config/app'
import { MAX_PLUGIN_FILE_BYTES } from './constants'
import { requestOnce } from './http-client'
import { createGuardedLookup, isForbiddenHost } from './net-guard'

function parseDownloadUrl(url: string): URL {
  let parsed: URL
  try {
    parsed = new URL(url)
  } catch {
    throw new Error('Invalid plugin URL')
  }
  if (parsed.protocol !== 'https:') throw new Error('Plugin URL must use https')
  if (parsed.username || parsed.password) throw new Error('Plugin URL must not contain userinfo')
  if (parsed.hash) throw new Error('Plugin URL must not contain a fragment')
  if (isForbiddenHost(parsed.hostname)) throw new Error('Plugin URL must use a public host')
  return parsed
}

export async function fetchRemotePlugin(url: string): Promise<string> {
  const parsed = parseDownloadUrl(url)
  const { subscriptionTimeout = 30000, pluginUseProxy } = await getAppConfig()
  let proxy: { host: string; port: number } | undefined
  if (pluginUseProxy) {
    const { getControledMihomoConfig } = await import('../../config/controledMihomo')
    const { 'mixed-port': port = 7890 } = await getControledMihomoConfig()
    proxy = { host: '127.0.0.1', port }
  }

  const response = await requestOnce(parsed.toString(), {
    method: 'GET',
    headers: { Accept: 'application/json, application/octet-stream' },
    timeout: subscriptionTimeout,

View on GitHub (pinned to 911e090537)

Solutions

1. Strip the '#...' portion of the URL before calling.
2. If you need a version/cache-buster, use a query string (?v=2) if the server supports it — but prefer the canonical bare file URL.
3. Copy the direct file link from the source rather than an anchored page link.

Example fix

// before
await fetchRemotePlugin('https://example.com/plugin.yaml#install')
// after
await fetchRemotePlugin('https://example.com/plugin.yaml')

const u = new URL(input)
if (u.hash) throw new Error('strip the #fragment from the download URL')

const hasNoFragment = (s: string): boolean => {
  try { return !new URL(s).hash } catch { return false }
}

try {
  await fetchRemotePlugin(input)
} catch (e) {
  if (e.message === 'Plugin URL must not contain a fragment') {
    showUrlInputError('Remove the #... part of the URL')
  } else throw e
}

When it happens

Trigger: Passing a download URL that ends with or contains '#...' — e.g. a documentation link copied with an anchor (https://example.com/plugin.yaml#install), or a template string where a placeholder got glued to a '#id'.

Common situations: Copying a link from a rendered page that includes a section anchor; appending cache-busting '#v2' instead of a query param; string concatenation bugs leaving a '#fragment' suffix.

Related errors

• Invalid plugin URL
• Unsupported plugin file type
• Plugin path is not a file
• Plugin file too large
• Plugin URL must use https

AI-assisted analysis of mihomo-party-org/clash-party@911e090537 (2026-08-30). Data as JSON: /api/errors/7776e588048e8ce2. Report an issue: GitHub.