Bump socket.io from 0.9.6 to 2.4.0 in /docs/slides/plpv14/_support/reveal

[dependabot]

Bumps socket.io from 0.9.6 to 2.4.0.

Release notes

Sourced from socket.io's releases.

2.4.0

Related blog post: https://socket.io/blog/socket-io-2-4-0/

Features (from Engine.IO)

• add support for all cookie options (19cc582)
• disable perMessageDeflate by default (5ad2736)

Bug Fixes

• security: do not allow all origins by default (f78a575)
• properly overwrite the query sent in the handshake (d33a619)

⚠️ BREAKING CHANGE ⚠️

Previously, CORS was enabled by default, which meant that a Socket.IO server sent the necessary CORS headers (Access-Control-Allow-xxx) to any domain. This will not be the case anymore, and you now have to explicitly enable it.

Please note that you are not impacted if:

• you are using Socket.IO v2 and the origins option to restrict the list of allowed domains
• you are using Socket.IO v3 (disabled by default)

This commit also removes the support for '*' matchers and protocol-less URL:

io.origins('https://example.com:443'); => io.origins(['https://example.com']);
io.origins('localhost:3000');          => io.origins(['http://localhost:3000']);
io.origins('http://localhost:*');      => io.origins(['http://localhost:3000']);
io.origins('*:3000');                  => io.origins(['http://localhost:3000']);

To restore the previous behavior (please use with caution):

io.origins((_, callback) => {
  callback(null, true);
});

See also:

• https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS
• https://socket.io/docs/v3/handling-cors/
• https://socket.io/docs/v3/migrating-from-2-x-to-3-0/#CORS-handling

Thanks a lot to @​ni8walk3r for the security report.

Links:

... (truncated)

Changelog

Sourced from socket.io's changelog.

2.4.0 (2021-01-04)

Bug Fixes

• security: do not allow all origins by default (f78a575)
• properly overwrite the query sent in the handshake (d33a619)

3.0.4 (2020-12-07)

3.0.3 (2020-11-19)

3.0.2 (2020-11-17)

Bug Fixes

• merge Engine.IO options (43705d7)

3.0.1 (2020-11-09)

Bug Fixes

• export ServerOptions and Namespace types (#3684) (f62f180)
• typings: update the signature of the emit method (50671d9)

3.0.0 (2020-11-05)

Bug Fixes

• close clients with no namespace (91cd255)

Features

• emit an Error object upon middleware error (54bf4a4)
• serve msgpack bundle (aa7574f)
• add support for catch-all listeners (5c73733)
• make Socket#join() and Socket#leave() synchronous (129c641)
• remove prod dependency to socket.io-client (7603da7)
• move binary detection back to the parser (669592d)
• add ES6 module export (8b6b100)
• do not reuse the Engine.IO id (2875d2c)
• remove Server#set() method (029f478)

... (truncated)

Commits

• See full diff in compare view

Maintainer changes

This version was pushed to npm by darrachequesne, a new releaser for socket.io since your current version.

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