This reduces the memory usage of previewing media files which
end up larger than the `max_spider_size` by avoiding buffering
content internally in treq.
It also checks the `Content-Length` header in additional places
instead of streaming the content to check the body length.
This is a small bug that I noticed while working on #8956.
We have a for-loop which attempts to strip all presence changes for each user except for the final one, as we don't really care about older presence:
9e19c6aab4/synapse/handlers/presence.py (L368-L371)
`new_states_dict` stores this stripped copy of latest presence state for each user, before it is... put into a new variable `new_state`, which is just overridden by the subsequent for loop.
I believe this was instead meant to override `new_states`. Without doing so, it effectively meant:
1. The for loop had no effect.
2. We were still processing old presence state for users.
- Update black version to the latest
- Run black auto formatting over the codebase
- Run autoformatting according to [`docs/code_style.md
`](80d6dc9783/docs/code_style.md)
- Update `code_style.md` docs around installing black to use the correct version
==============================
Features
--------
- Further improvements to the user experience of registration via single sign-on. ([\#9297](https://github.com/matrix-org/synapse/issues/9297))
Bugfixes
--------
- Fix ratelimiting introduced in v1.27.0rc1 for invites to respect the `ratelimit` flag on application services. ([\#9302](https://github.com/matrix-org/synapse/issues/9302))
- Do not automatically calculate `public_baseurl` since it can be wrong in some situations. Reverts behaviour introduced in v1.26.0. ([\#9313](https://github.com/matrix-org/synapse/issues/9313))
Improved Documentation
----------------------
- Clarify the sample configuration for changes made to the template loading code. ([\#9310](https://github.com/matrix-org/synapse/issues/9310))
-----BEGIN PGP SIGNATURE-----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=NSyp
-----END PGP SIGNATURE-----
Merge tag 'v1.27.0rc2' into develop
Synapse 1.27.0rc2 (2021-02-11)
==============================
Features
--------
- Further improvements to the user experience of registration via single sign-on. ([\#9297](https://github.com/matrix-org/synapse/issues/9297))
Bugfixes
--------
- Fix ratelimiting introduced in v1.27.0rc1 for invites to respect the `ratelimit` flag on application services. ([\#9302](https://github.com/matrix-org/synapse/issues/9302))
- Do not automatically calculate `public_baseurl` since it can be wrong in some situations. Reverts behaviour introduced in v1.26.0. ([\#9313](https://github.com/matrix-org/synapse/issues/9313))
Improved Documentation
----------------------
- Clarify the sample configuration for changes made to the template loading code. ([\#9310](https://github.com/matrix-org/synapse/issues/9310))
