gristlabs_grist-core

Commit Graph

Author	SHA1	Message	Date
George Gevoian	c87d835533	(core) Update WS deps after grist-core sync Summary: Some WS-related code was touched in a recent PR to grist-core. This extends those changes to the rest of the codebase so that builds work again. Test Plan: N/A Reviewers: dsagal Reviewed By: dsagal Subscribers: dsagal Differential Revision: https://phab.getgrist.com/D4224	6 months ago
Jonathan Perret	96b652fb52	Support HTTP long polling as an alternative to WebSockets (#859 ) The motivation for supporting an alternative to WebSockets is that while all browsers supported by Grist offer native WebSocket support, some networking environments do not allow WebSocket traffic. Engine.IO is used as the underlying implementation of HTTP long polling. The Grist client will first attempt a regular WebSocket connection, using the same protocol and endpoints as before, but fall back to long polling using Engine.IO if the WebSocket connection fails. Include these changes: - CORS websocket requests are now rejected as a stronger security measure. This shouldn’t affect anything in practice; but previously it could be possible to make unauthenticated websocket requests from another origin. - GRIST_HOST variable no longer affects CORS responses (also should not affect anything in practice, as it wasn't serving a useful purpose)	6 months ago

Author

SHA1

Message

Date

George Gevoian

c87d835533

(core) Update WS deps after grist-core sync

Summary:
Some WS-related code was touched in a recent PR to grist-core. This extends
those changes to the rest of the codebase so that builds work again.

Test Plan: N/A

Reviewers: dsagal

Reviewed By: dsagal

Subscribers: dsagal

Differential Revision: https://phab.getgrist.com/D4224

Jonathan Perret

96b652fb52

Support HTTP long polling as an alternative to WebSockets (#859 )

The motivation for supporting an alternative to WebSockets is that while all browsers supported by Grist offer native WebSocket support, some networking environments do not allow WebSocket traffic.

Engine.IO is used as the underlying implementation of HTTP long polling. The Grist client will first attempt a regular WebSocket connection, using the same protocol and endpoints as before, but fall back to long polling using Engine.IO if the WebSocket connection fails.

Include these changes:
- CORS websocket requests are now rejected as a stronger security measure. This shouldn’t affect anything in practice; but previously it could be possible to make unauthenticated websocket requests from another origin.
- GRIST_HOST variable no longer affects CORS responses (also should not affect anything in practice, as it wasn't serving a useful purpose)

2 Commits (08b91c4cb7628ec9d2777aef67042efc1965c22a)