Proxy '/socket.io' to socket server

[nddery]

Description

Rework how the communication with SocketIO is done. Instead of talking directly with the SocketIO server, proxy the /socket.io path to the SocketIO domain.

Changes/Tasks

• Initialize the SocketIO client without options (defaults to current window location)
• Proxy /socket-io to the SocketIO server
• Remove the __getMessagePort endpoint in the webpack-dev-server

Motivation and Context

Following the steps outlined in the documentation to enable HTTPS for local development, Safari fails to request data from the SocketIO domain (http://localhost:4000), has it isn't served over HTTPS. Chrome has no issue with this.

Safari logs the following error in the console, originating from polling-xhr.js:

Not allowed to request resource
XMLHttpRequest cannot load http://localhost:4000/socket.io/?EIO=3&transport=polling&t=N7DEOQw due to access control checks.

I have tried to run the SocketIO server on an HTTPS server, without any luck.

Types of changes

• Refactoring/add tests (refactoring or adding test which isn't a fix or add a feature)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have updated the documentation accordingly
• I have updated the CHANGELOG with a summary of my changes
• My changes have tests around them

[SleeplessByte]

Seems fine. Annoying tho!

Thanks for this.