[tor-project] Anti-censorship team meeting notes, 2022-11-10

meskio meskio at torproject.org
Thu Nov 10 16:30:36 UTC 2022 

Hey everyone!

Here are our meeting logs:
http://meetbot.debian.net/tor-meeting/2022/tor-meeting.2022-11-10-15.58.html

And our meeting pad:

Anti-censorship work meeting pad
--------------------------------

Next meeting: Thursday Nov 17 16:00 UTC

Weekly meetings, every Thursday at 16:00 UTC, in #tor-meeting at OFTC
(channel is logged while meetings are in progress)

== Goal of this meeting ==

Weekly check-in about the status of anti-censorship work at Tor.
Coordinate collaboration between people/teams on anti-censorship at the Tor Project and Tor community.

== Links to Useful documents ==

	* Our anti-censorship roadmap:
		* Roadmap: https://gitlab.torproject.org/groups/tpo/anti-censorship/-/boards
	* The anti-censorship team's wiki page:
		* https://gitlab.torproject.org/tpo/anti-censorship/team/-/wikis/home
	* Past meeting notes can be found at:
		* https://lists.torproject.org/pipermail/tor-project/
	* Tickets that need reviews:  from sponsors we are working on:
		* All needs review tickets:
			* https://gitlab.torproject.org/groups/tpo/anti-censorship/-/merge_requests?scope=all&utf8=%E2%9C%93&state=opened&assignee_id=None
		* Sponsor 28
			* must-do tickets: https://gitlab.torproject.org/groups/tpo/-/milestones/10
			* possible tickets: https://gitlab.torproject.org/groups/tpo/-/issues?scope=all&utf8=%E2%9C%93&state=opened&label_name%5b%5d=Sponsor%2028&milestone_title=None
		* Sponsor 96
			* https://gitlab.torproject.org/groups/tpo/-/milestones/24

== Announcements ==

	* 

== Discussion ==

	* spike of obfs4 usage in china
		* https://metrics.torproject.org/userstats-bridge-combined.html?start=2022-10-01&end=2022-11-10&country=cn
		* can the change to use obfs4 by default in CN be part of that spike? https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/99

== Actions ==


== Interesting links ==

	* Connection throttling in Uzbekistan since 2022-11-04?
		* https://ntc.party/t/twitter-tik-tok-skype/1122/35
		* "we see some kind of bandwith limitations with transfering of big files in MS365 services (for example - letters in outlook without attachments receiving without problems, but if there’s some file attached - time to loading this letter increasing dramatically; same situation with Sharepoint’s instances - data in web-version of Office365 loads correctly and fast, but if we start to use desktop apps (word, excel, PBI, etc.), which retrieving information from MS servers, time to loading increasing dramatically, no matter of file size)."

== Reading group ==

	* We will discuss "Measuring DoT/DoH Blocking Using OONI Probe: a Preliminary Study" on Dec 1
		* https://www.ndss-symposium.org/ndss-paper/auto-draft-123/
		* https://www.ndss-symposium.org/wp-content/uploads/dnspriv21-02-paper.pdf
		* Questions to ask and goals to have:
			* What aspects of the paper are questionable?
			* Are there immediate actions we can take based on this work?
			* Are there long-term actions we can take based on this work?
			* Is there future work that we want to call out in hopes that others will pick it up?

== Updates ==

Name:
    This week:
        - What you worked on this week.
    Next week:
        - What you are planning to work on next week.
    Help with:
	     - Something you need help with.

cecylia (cohosh): last updated 2022-11-10
	Last week:
	    - reviewed and merged snowflake-webext!56
	    - reviewed and merged snowflake-webext!59
	    - continued work to fix translations
	    - reached out to conjure researchers about scaling issues
	    - started reading up on reputation-based bridge distribution again
	This week:
	    - website/extension release (blocked on !62)
	    - continue work on conjure client
	    - more work on reputation-based bridge dist
	Needs help with:

dcf: 2022-11-10
	Last week:
		- investigated the cause of last week's ~doubling of snowflake-01 bandwidth; seems to have been the gradual release of a version of Orbot with uTLS support for snowflake https://gitlab.torproject.org/tpo/network-health/metrics/timeline/-/commit/cf262eb3a13f4d693e14c3468ccad9b8ac9ad91e
		- helped review styling changes in snowflake webextension https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake-webext/-/merge_requests/32
		- posted guides on how to test the snowflake-02 bridge https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40212#note_2851243
		- more review of the presentation of right-to-left languages in the snowflake webextension https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake-webext/-/merge_requests/51#note_2851449
		- opened an issue for snowflake proxy failing to scrub IPv6 addresses from log when URL-encoded https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40229
	Next week:
		- disable non-WireGuard SSH access to snowflake-02 https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40122
		- migrate goptlib to gitlab https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/86#note_2823122
		- try Conjure PT development version https://forum.torproject.net/t/tor-dev-introducing-a-conjure-pt-for-tor/4429
		- break up snowflake-server performance improvements into separate merge requests https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/100
		- document recent performance optimizations in Snowflake bridge installation guide
	Help with:

meskio: 2022-11-10
   Last week:
       - obfs4proxy 0.0.14 in Tor Browser
       - prepare SOTO 2022 presentation
       - update the list of blocked bridges in RU
       - change gettor silence alert to 6h
       - brainstorm on bandwith testing for bridges (onbasca#130)
       - fix sqlinjections on onionsproutsbot (OnionSproutsBot!22)
   Next week:
       - check if we are distributing blocked bridges in moat (rdsys#80)


Shelikhoo: 2022-11-10
   Last Week:
		- [Merge Request Awaiting] Add SOCKS5 forward proxy support to snowflake (snowflake!64)
		- [Discussion & Deployment] Rollout of Distributed Snowflake Support
		- [Coding & Deployment] Proposal: Centralized Probe Result Collector (anti-censorship/team#54)
		- [Research] HTTPT Planning https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/httpt/-/issues/1
		- [Research] Censorship analysis for UDP traffic between Iran and rest of Internet: 2022 Q4: https://gitlab.torproject.org/tpo/anti-censorship/censorship-analysis/-/issues/40036 (Continue)
		- [Merge Request] Add Version Output Support to Snowflake(This also shows utls client hello names) https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/111
		- Reviewed a lots of merge request
   Next Week:
		- [Research] WebTunnel planning (Continue)
		- [Research] Fix vantage point summary upload in China
		- Release new version of Snowflake WebExt
		- [Research] Censorship analysis for UDP traffic between Iran and rest of Internet: 2022 Q4: https://gitlab.torproject.org/tpo/anti-censorship/censorship-analysis/-/issues/40036 (Continue)
     - Finish all the reviews

Itchy Onion: 2022-11-10
    Last week:
        - Fixed the Rib issue. Now snowflake passes CI tests 100%.
        - attending (parts of) RACE PI meeting remotely.

    This week:
        - some logging improvements https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/110
        - debug RACE tests errors from stress tests








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