[tor-project] cohosh's monthly status report, November 2024

[Cecylia Bocovich via tor-project <tor-project@xxxxxxxxxxxxxxxxxxxx>]

Hi! This is my status report for contract work done in November 2024.

# Snowflake

Snowflake was blocked in Russia in early November. The blocking has 
since stopped (at least temporarily). I did some analysis using the 
automatically generated pcaps from our vantage point, and write a few 
patches to more easily test whether specific proxies or versions of 
Snowflake can evade the blocking. We'll continue to monitor reachability 
in case the blocking returns.
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40407

My main ongoing task on Snowflake is to look at how we can use Snowflake 
broker metrics to more accurately detect and respond to censorship events.
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40394
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40416

I released version 0.9.2 of the webextension and version 2.10.1 of 
snowflake this month.

We had a major upgrade of the Snowflake broker at the end of November. 
This required a few followup tasks and debugging. I worked on getting 
metrics back up and running.
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40349#note_3135597

And lastly, a few small logging fixups for Snowflake proxies
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/446
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/447

# PT library work

After October, there were a few outstanding tasks and issues with the 
IPtProxy rewrite. This has now been merged and released as version 4.0.0!
https://github.com/tladesignz/IPtProxy/tree/4.0.0
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/lyrebird/-/merge_requests/64

# Domain fronting

A few of the remaining Fastly front domains renewed their certificates 
recently, so we had to update all of our settings to use non-Fastly 
configurations.
https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/151
https://github.com/guardianproject/orbot/pull/1197

I made some more progress on the meek bridge handover, and updated the 
bridge to use the new meek.torproject.net and meektm.torproject.net domains.
https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/133

# Lox

I worked on a few code quality changes last month, including simplifying 
some Lox tests so they run more easily on laptops.
https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/281
https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/277


# Miscellaneous

All the usual merge request reviews and general project maintenance tasks :)

I helped with some grant writing and planning early this month.

I also helped debug a tor bootstrapping issue with PTs
https://gitlab.torproject.org/tpo/core/tor/-/issues/40990
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