[tor-project] Anti-censorship team meeting notes, 2022-04-21

Thu Apr 21 17:11:14 UTC 2022

Hey everyone!

Here are our meeting logs:

http://meetbot.debian.net/tor-meeting/2022/tor-meeting.2022-04-21-15.59.html  

And our meeting pad:

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

Next meeting: Thursday April 21th 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 checkin about the status of anti-censorship work at Tor.
Coordinate collaboration between people/teams on anti-censorship at Tor.

== 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 ==

	* Do we have graphs about telegram bridge usage
		* irl has some script to generate them
		* current telegram bridges are not pressent in metrics.tpo as 'distributor telegram', as they are manually feeded. This will change when we start using rdsys for it.
	* Is the reading group reading supposed to be "Web censorship measurements of HTTP/3 over QUIC" https://dl.acm.org/doi/abs/10.1145/3487552.3487836 ?
		* or the threads https://github.com/net4people/bbs/issues/108 https://ntc.party/t/http-3-quic/1823 ?
		* one of the authors of the paper, Kathrin Elmenhorst, has posted some more recent measurements of HTTP/3 blocking in Russia specifically https://github.com/kelmenhorst/quic-censorship/issues/4
		* we'll read the paper, the threads are for more context
	* Snowflake Multi-Server Broker Testing (https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40129#note_2797319)
		* (this is where the client tells the broker&proxy what bridge it wants to use, by putting fingerprint=1234ABCD... on its Bridge line)
		* testing is wellcome...
		* there are instructions for testing it in the issue
	* Report of CDN Block in Turkmenistan(https://gitlab.torproject.org/tpo/anti-censorship/censorship-analysis/-/issues/40024#note_2796760)
		* cloudflare is being blocked in Turkmenistan
		* in Russia they are blocking 2 IPs of cloudflare too, but might be an error of overblocking targeting a single site https://ntc.party/t/cloudflare-cdn/2245/24
		* shell will talk with fastly and cloudflare to see what they know, and we'll look into setting up a vantage point in TM
	* meskio, if you could give rdsys a free software license, i will breathe easier at night: https://gitlab.torproject.org/tpo/anti-censorship/rdsys/-/issues/107
		* meskio will add 3-BSD in the comming days
	* dnstt, next steps
		* https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/trac/-/issues/40001
		* the major blocker now is to have support for PT commands over the SOCKS connection
		* will require forking the code into tpo

== Actions ==

	* 

== Interesting links ==

	* https://pluggabletransports.info/blog/pt-meetup-apr2022/

== Reading group ==

	* We will discuss "Blocking of HTTP/3 (QUIC) in Russia" on Apr/28th/2022
		* https://dl.acm.org/doi/abs/10.1145/3487552.3487836
		* https://github.com/net4people/bbs/issues/108
		* 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.

anadahz: 2022-01-27
	Last week:
		- Increase timeout check cycles for default-bridge-felix-1 and default-bridge-felix-2 as they have been generating too many alerts: https://gitlab.torproject.org/tpo/anti-censorship/monit-configuration/-/merge_requests/1

cecylia (cohosh): last updated 2022-04-14
Last week:
    - moved tor-specific snowflake code out of client library (snowflake#40124)
        - merge request: snowflake!85
    - bump version of webrtc dependency (snowflake#40127)
        - merge request: snowflake!86
    - commented on snowflake web workflow (snowflake#40125)
    - opened issue to bump version of snowflake and webrtc in tor browser (tor-browser-build#40474)
    - work on conjure test environment setup
This week:
    - continued work on conjure PT
    - continue snowflake maintenance tasks
Needs help with:

dcf: 2022-04-21
	Last week:
		- investigated how Tor Metrics estimates the number of users and asked questions about it https://lists.torproject.org/pipermail/tor-dev/2022-April/014724.html https://gitlab.torproject.org/tpo/network-health/metrics/website/-/issues/40047#note_2796619
		- made a graph of Tor users in Russia across all transports https://gitlab.torproject.org/tpo/community/support/-/issues/40050#note_2796770
		- wrote feedback on the Def Con submission draft
		- installed a second snowflake bridge https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40122#note_2797271
	Next week:
		- look at STATUS VERSION proposal https://gitlab.torproject.org/tpo/core/torspec/-/merge_requests/63
	Help with:

agix: 2021-02-10
	Last week:
		- Continued work on gettor-twitter
		Next week:
		- Hopefully finish the task
	Help with:
		-

arlolra: 2022-04-07
	Last week:
		- Merged the rest of snowflake !81
	Next week:
	  - Get to snowflake-webext #10
	Evergreen:
		- Figure out where in pion/webrtc ALPN should be configured and used
		- Maybe add Chacha20Poly1305 to pion/dtls
		https://github.com/pion/dtls#planned-features
		https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40014#note_2764731
	Help with:
		- 

maxb: 2021-09-23
	Last week:
		- Worked on https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40054 re: utls for broker negotiation
		- Had conversation with someone about upstream utls http round tripper https://github.com/refraction-networking/utls/pull/74
		- Too busy with work :/
	Next week:
		- _Really_ want to get a PR for utls round tripper

meskio: 2022-04-21
	Last week:
			- deploy rdsys 0.2 with many fixes
			- update monit configuration to the new snowflake bridge (monit-configuration!2)
			- merge moat documentation into rdsys (rdsys!34)
			- catch up after a week off
	Next week:
			- use bridgestrap results to select what bridges to distribute (rdsys#96)
			- give rdsys a free software license (rdsys#107)

Shelikhoo: 2022-04-21
   Last Week:
		- [Merge Request Awaiting] Add SOCKS5 forward proxy support to snowflake (snowflake!64)
		  - [Coding & Deployment] Proposal: Centralized Probe Result Collector (anti-censorship/team#54)
		  - [Discussion] Centralized Probe Log Collection Ascension Request
		  - [Discussion] Hosting Centralized Probe Log Collection Server on TPA managed VPS
		  - [Discussion] Proposal: Support for Dynamic IP obfs4 bridges with unattended proxy information update(aka "Subscription")
		  - [Discussion+Coding] Support Automatic Bridge Info update(shelikhoo/LogCollectorAncillary#1)
		  - [Discussion+Coding] Remove Inactive Bridge from Test Result(shelikhoo/LogCollectorAncillary#2)
		  - [Coding] Distributed Snowflake Bridges - Broker
		  - [Coding] Distributed Snowflake Bridges Testing Environment - Dockerlized
		  - [Deployment] Distributed Snowflake Bridges Testing Broker
   Next Week:
		  - [Coding] Distributed Snowflake Bridges (continue)
		  - [Research] Blocking of Snowflake in Turkmenistan, 2021-10-24

Itchy Onion: 2022-04-14
    Last week:
        - worked on rebasing RACECAR snowflake but didn't finish (3 day week)
        - read RACECAR doc
    This week:
        - debugged a RACE 2.1.0 issue 
        - read snowflake code -- there is going to be a recurring 1:1 meeting between me and Eliana from Georgetown to go over each other's channel code

HackerNCoder: 2021-12-16
This week:
    Last/done:
        Setup web mirror on tor.encryptionin.space
    Next:
        Get (new VPs with) new IP and setup new web mirror on new domain

hanneloresx: 2021-3-4
	Last week: 
		- Submitted MR for bridgestrap issue #14
	Next week:
		- Finish bridgestrap #14
		- Find new issue to work on
	Help with:
		- 

-- 
meskio | https://meskio.net/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 My contact info: https://meskio.net/crypto.txt
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Nos vamos a Croatan.
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