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assetPrefix + rewrites is bugged in development mode since 13.4.13 #55320

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sebpettersson opened this issue Sep 13, 2023 · 1 comment · Fixed by #67983
Closed
1 task done

assetPrefix + rewrites is bugged in development mode since 13.4.13 #55320

sebpettersson opened this issue Sep 13, 2023 · 1 comment · Fixed by #67983
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bug Issue was opened via the bug report template. locked

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@sebpettersson
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Link to the code that reproduces this issue or a replay of the bug

https://github.com/sebpettersson/nextjs-dev-mode-bug

To Reproduce

If you use assetPrefix and rewrites in development mode you get "Error: Invariant: attempted to hard navigate to the same URL".

Sample config:

module.exports = {
  reactStrictMode: true,
  assetPrefix: "/dev-mode-bug",
  rewrites: async () => [
    {
      source: `/dev-mode-bug/_next/static/:path*`,
      destination: "/_next/static/:path*",
    },
  ],
};

It looks like the files starting with _dev in _next/static/development/ is not being rewritten correctly and return 404s:

Screenshot 2023-09-13 at 14 00 04

Current vs. Expected behavior

I expected assetPrefix and rewrites to not trigger any errors or 404s on critical files.

Verify canary release

  • I verified that the issue exists in the latest Next.js canary release

Provide environment information

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 22.6.0: Wed Jul  5 22:22:05 PDT 2023; root:xnu-8796.141.3~6/RELEASE_ARM64_T6000
Binaries:
  Node: 18.13.0
  npm: 8.19.3
  Yarn: N/A
  pnpm: 8.6.12
Relevant Packages:
  next: 13.4.20-canary.26
  eslint-config-next: N/A
  react: 18.2.0
  react-dom: 18.2.0
  typescript: 5.1.3
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

Not sure

Additional context

This issue was introduced in 13.4.13-canary.0. 13.4.12 works as expected.

@sebpettersson sebpettersson added the bug Issue was opened via the bug report template. label Sep 13, 2023
@ijjk ijjk closed this as completed in c18fcf2 Jul 30, 2024
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This closed issue has been automatically locked because it had no new activity for 2 weeks. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.

@github-actions github-actions bot locked as resolved and limited conversation to collaborators Aug 13, 2024
ztanner pushed a commit that referenced this issue Aug 26, 2024
<!-- Thanks for opening a PR! Your contribution is much appreciated.
To make sure your PR is handled as smoothly as possible we request that
you follow the checklist sections below.
Choose the right checklist for the change(s) that you're making:

- Run `pnpm prettier-fix` to fix formatting issues before opening the
PR.
- Read the Docs Contribution Guide to ensure your contribution follows
the docs guidelines:
https://nextjs.org/docs/community/contribution-guide

- The "examples guidelines" are followed from our contributing doc
https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md
- Make sure the linting passes by running `pnpm build && pnpm lint`. See
https://github.com/vercel/next.js/blob/canary/contributing/repository/linting.md

- Related issues linked using `fixes #number`
- Tests added. See:
https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md

- Implements an existing feature request or RFC. Make sure the feature
request has been accepted for implementation before opening a PR. (A
discussion must be opened, see
https://github.com/vercel/next.js/discussions/new?category=ideas)
- Related issues/discussions are linked using `fixes #number`
- e2e tests added
(https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs)
- Documentation added
- Telemetry added. In case of a feature if it's used or not.
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md

- Minimal description (aim for explaining to someone not on the team to
understand the PR)
- When linking to a Slack thread, you might want to share details of the
conclusion
- Link both the Linear (Fixes NEXT-xxx) and the GitHub issues
- Add review comments if necessary to explain to the reviewer the logic
behind a change

Closes NEXT-
Fixes #

-->

fixes #63820
fixes #55320
fixes #52931

In one of the issues, there was a suggestion to delete `assetPrefix`
from `next.config`. It helps if you have `assetPrefix: '/'`. Otherwise,
you probably won't face this problem.

**Explanation:**

The problem lies where the browser tries to connect and where websocket
is available on the server.

Adjust the condition for `prefix` in `get-socket-url` as it can return
`''` which will lead to `//` in the url.

The browser wants to connect to `ws://localhost:3000/_next/webpack-hmr`
While internally next exposes the web socket under
`ws://localhost:3000//_next/webpack-hmr` - you can connect to it via
wscat, postman or whatever.
As the path is different it does not handle HMR requests in the browser.

In addition to that - Reuse logic and extract separate files as a helper
in shared/lib.

| Before | After |
| ------ | ------- |
| ![before - latest canary
branch](https://github.com/user-attachments/assets/c26c8b20-1352-49c6-a099-101394438ba0)
before - latest canary branch - we can't establish a connection to HMR
ws |
![after](https://github.com/user-attachments/assets/26500e68-bc4d-44ca-b418-f9bda6bc9aa6)
same example with local changes - connected to ws |

---------

Co-authored-by: Jiwon Choi <devjiwonchoi@gmail.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
ztanner pushed a commit that referenced this issue Aug 26, 2024
<!-- Thanks for opening a PR! Your contribution is much appreciated.
To make sure your PR is handled as smoothly as possible we request that
you follow the checklist sections below.
Choose the right checklist for the change(s) that you're making:

- Run `pnpm prettier-fix` to fix formatting issues before opening the
PR.
- Read the Docs Contribution Guide to ensure your contribution follows
the docs guidelines:
https://nextjs.org/docs/community/contribution-guide

- The "examples guidelines" are followed from our contributing doc
https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md
- Make sure the linting passes by running `pnpm build && pnpm lint`. See
https://github.com/vercel/next.js/blob/canary/contributing/repository/linting.md

- Related issues linked using `fixes #number`
- Tests added. See:
https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md

- Implements an existing feature request or RFC. Make sure the feature
request has been accepted for implementation before opening a PR. (A
discussion must be opened, see
https://github.com/vercel/next.js/discussions/new?category=ideas)
- Related issues/discussions are linked using `fixes #number`
- e2e tests added
(https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs)
- Documentation added
- Telemetry added. In case of a feature if it's used or not.
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md

- Minimal description (aim for explaining to someone not on the team to
understand the PR)
- When linking to a Slack thread, you might want to share details of the
conclusion
- Link both the Linear (Fixes NEXT-xxx) and the GitHub issues
- Add review comments if necessary to explain to the reviewer the logic
behind a change

Closes NEXT-
Fixes #

-->

fixes #63820
fixes #55320
fixes #52931

In one of the issues, there was a suggestion to delete `assetPrefix`
from `next.config`. It helps if you have `assetPrefix: '/'`. Otherwise,
you probably won't face this problem.

**Explanation:**

The problem lies where the browser tries to connect and where websocket
is available on the server.

Adjust the condition for `prefix` in `get-socket-url` as it can return
`''` which will lead to `//` in the url.

The browser wants to connect to `ws://localhost:3000/_next/webpack-hmr`
While internally next exposes the web socket under
`ws://localhost:3000//_next/webpack-hmr` - you can connect to it via
wscat, postman or whatever.
As the path is different it does not handle HMR requests in the browser.

In addition to that - Reuse logic and extract separate files as a helper
in shared/lib.

| Before | After |
| ------ | ------- |
| ![before - latest canary
branch](https://github.com/user-attachments/assets/c26c8b20-1352-49c6-a099-101394438ba0)
before - latest canary branch - we can't establish a connection to HMR
ws |
![after](https://github.com/user-attachments/assets/26500e68-bc4d-44ca-b418-f9bda6bc9aa6)
same example with local changes - connected to ws |

---------

Co-authored-by: Jiwon Choi <devjiwonchoi@gmail.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
ztanner pushed a commit that referenced this issue Aug 26, 2024
<!-- Thanks for opening a PR! Your contribution is much appreciated.
To make sure your PR is handled as smoothly as possible we request that
you follow the checklist sections below.
Choose the right checklist for the change(s) that you're making:

- Run `pnpm prettier-fix` to fix formatting issues before opening the
PR.
- Read the Docs Contribution Guide to ensure your contribution follows
the docs guidelines:
https://nextjs.org/docs/community/contribution-guide

- The "examples guidelines" are followed from our contributing doc
https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md
- Make sure the linting passes by running `pnpm build && pnpm lint`. See
https://github.com/vercel/next.js/blob/canary/contributing/repository/linting.md

- Related issues linked using `fixes #number`
- Tests added. See:
https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md

- Implements an existing feature request or RFC. Make sure the feature
request has been accepted for implementation before opening a PR. (A
discussion must be opened, see
https://github.com/vercel/next.js/discussions/new?category=ideas)
- Related issues/discussions are linked using `fixes #number`
- e2e tests added
(https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs)
- Documentation added
- Telemetry added. In case of a feature if it's used or not.
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md

- Minimal description (aim for explaining to someone not on the team to
understand the PR)
- When linking to a Slack thread, you might want to share details of the
conclusion
- Link both the Linear (Fixes NEXT-xxx) and the GitHub issues
- Add review comments if necessary to explain to the reviewer the logic
behind a change

Closes NEXT-
Fixes #

-->

fixes #63820
fixes #55320
fixes #52931

In one of the issues, there was a suggestion to delete `assetPrefix`
from `next.config`. It helps if you have `assetPrefix: '/'`. Otherwise,
you probably won't face this problem.

**Explanation:**

The problem lies where the browser tries to connect and where websocket
is available on the server.

Adjust the condition for `prefix` in `get-socket-url` as it can return
`''` which will lead to `//` in the url.

The browser wants to connect to `ws://localhost:3000/_next/webpack-hmr`
While internally next exposes the web socket under
`ws://localhost:3000//_next/webpack-hmr` - you can connect to it via
wscat, postman or whatever.
As the path is different it does not handle HMR requests in the browser.

In addition to that - Reuse logic and extract separate files as a helper
in shared/lib.

| Before | After |
| ------ | ------- |
| ![before - latest canary
branch](https://github.com/user-attachments/assets/c26c8b20-1352-49c6-a099-101394438ba0)
before - latest canary branch - we can't establish a connection to HMR
ws |
![after](https://github.com/user-attachments/assets/26500e68-bc4d-44ca-b418-f9bda6bc9aa6)
same example with local changes - connected to ws |

---------

Co-authored-by: Jiwon Choi <devjiwonchoi@gmail.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
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