ERR_SSL_PROTOCOL_ERROR when using `gatsby develop --https`

Description

When using gatsby develop --https, I see a lot of ERR_SSL_PROTOCOL_ERROR errors in the console, for what seems to be socket.io related requests. I am using the (currently) latest version of Gatsby.

It happens about every 5 seconds, which makes it annoying to use the console to debug other things. The page seems to work fine, and HMR works without issues too, regardless of the errors.

Steps to reproduce

Go to this repo and follow the instructions: https://github.com/Mrtenz/gatsby-https-issue

Alternatively, run this in an existing Gatsby project:

1. Run gatsby develop --https
2. Open the page and check the console

Expected result

There shouldn’t be any SSL errors.

Actual result

There are SSL errors.

Environment

  System:
    OS: Linux 5.8 Arch Linux
    CPU: (16) x64 AMD Ryzen 7 3800X 8-Core Processor
    Shell: 5.8 - /usr/bin/zsh
  Binaries:
    Node: 12.18.3 - /tmp/yarn--1602600057219-0.43846647488335666/node
    Yarn: 1.22.10 - /tmp/yarn--1602600057219-0.43846647488335666/yarn
    npm: 6.14.6 - ~/.nvm/versions/node/v12.18.3/bin/npm
  Languages:
    Python: 3.8.6 - /usr/bin/python
  Browsers:
    Firefox: 81.0.1
  npmPackages:
    gatsby: ^2.24.76 => 2.24.76
    gatsby-plugin-canonical-urls: ^2.3.13 => 2.3.13
    gatsby-plugin-create-client-paths: ^2.3.13 => 2.3.13
    gatsby-plugin-layout: ^1.3.13 => 1.3.13
    gatsby-plugin-manifest: ^2.4.34 => 2.4.34
    gatsby-plugin-offline: ^3.2.31 => 3.2.31
    gatsby-plugin-react-helmet-async: ^1.1.0 => 1.1.0
    gatsby-plugin-react-redux: ^1.1.0 => 1.1.0
    gatsby-plugin-robots-txt: ^1.5.3 => 1.5.3
    gatsby-plugin-s3: ^0.3.5 => 0.3.5
    gatsby-plugin-sitemap: ^2.4.16 => 2.4.16
    gatsby-plugin-styled-components: ^3.3.14 => 3.3.14
    gatsby-plugin-ts-config: ^1.1.0 => 1.1.0
    gatsby-plugin-typescript: ^2.4.21 => 2.4.21
    gatsby-plugin-typescript-checker: ^1.1.1 => 1.1.1
    gatsby-plugin-webpack-bundle-analyser-v2: ^1.1.13 => 1.1.13

[valeeum]

I’m experiencing these issues again but this time on the develop server so the localhost dev server never loads to begin with. The problem doesn’t exist when I reference “gatsby”: “4.14.1” in package.json but does when I specify “gatsby”: “^4.14.1”. Depending on the version of gatsby I install i get one of the following errors:

[github-actions[bot]]

Hiya!

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