[tor-project] Anti-censorship team meeting notes, 2024-06-20

onyinyang onyinyang at torproject.org
Thu Jun 20 18:19:37 UTC 2024


Hey everyone!

Here are our meeting logs:
http://meetbot.debian.net/tor-meeting/2024/tor-meeting.2024-06-20-16.00.html

And our meeting pad:

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

Next meeting: Thursday, June 27 16:00 UTC
Facilitator: shelikhoo
^^^(See Facilitator Queue at tail)

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

This week's Facilitator: onyinyang

== 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 96 <-- meskio, shell, onyinyang, cohosh
             * https://gitlab.torproject.org/groups/tpo/-/milestones/24
         * Sponsor 150 <-- meskio working on it
             * 
https://gitlab.torproject.org/groups/tpo/anti-censorship/-/issues/?label_name%5B%5D=Sponsor%20150


== Announcements ==

     * No meeting July 4 (Tor's midyear break)

== Discussion ==

     * theodorsm's thesis and DTLS library
         * https://github.com/theodorsm/covert-dtls
         * trouble integrating it into snowflake - dependency/version issues
         * breaking changes with the version of pion/stun used in snowflake
             * but snowflake is already using the latest pion/stun?
         * theodorsm forked the older version of pion/dtls used by 
snowflake and re-applied the covert-dtls changes
             * snowflake is using pion/dtls v2.2.7 while latest is 
v2.2.11, but unreleased code is needed (should come with v2.2.12)
                 * as specified by current pion/webrtc v3.2.42 
https://github.com/pion/webrtc/blob/v3.2.42/go.mod#L7

== Actions ==


== Interesting links ==

     *

== Reading group ==
     * We will discuss "" on
         *
         * 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): 2024-06-20
     Last week:
         - wrote up a forum post to guide users through snowflake 
browser extension consent prompt
             - 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake-webext/-/issues/97
         - found and fixed a bug with the consent prompt flow
             - 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake-webext/-/issues/98
             - deployed version 0.8.3 of the snowflake extension
         - showed onyinyang how to test and debug the Lox module in Tor 
Browser
         - reproduced reported SQS rendezvous bug with two bridges
             - 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40363
         - followed up on idea to set SQS anonymous access policies
             - 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40364
         - reviewed merge requests and updated dependencies
     This week:
         - followup on snowflake extension UX fixes
         - take a look at shell's mv3 changes
         - take a look at snowflake web and webext translations and best 
practices
         - make changes to Lox encrypted bridge table
             - 
https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/147
         - update wasm-bindgen fork to fix some bugs and hopefully 
upstream changes
     Needs help with:

dcf: 2024-06-20
     Last week:
     Next week:
         - review snowflake unreliable+unordered data channels rev2 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/315
         - open issue to have snowflake-client log whenever KCPInErrors 
is nonzero 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40262#note_2886018
             - parent: 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40267
         - open issue to disable /debug endpoint on snowflake broker
         - move snowflake-02 to new VM
Help with:
         - tell me when to restart the brokers for 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40349

meskio: 2023-06-20
     Last week:
         - clean up bridgestrap logs to make them more readable 
(bridgestrap#43)
         - investigate why bridgestrap is filling polyanthum disk
         - look into the builtin bridges being offline and figure more 
problems with bridgestrap to look into (tpa/team##41651)
         - review and merge refactor on lyrebird copyLoop (lyrebird!50)
     Next week:
         - investigate what builtin bridges are offline (team#141)
         - why is the status page mentioning vanilla part of obfs4 
bridges? (rdsys#205)


Shelikhoo: 2024-06-06
     Last Week:
         - [Merge Request Waiting] Add Container Image Mirroring from 
Tor Gitlab to Docker 
Hub(https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/280)
             - [Merge Request Waiting] Snowflake Performance Improvement 
rev2 
(https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/315)
             - Chrome Manifest V3 transition: 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake-webext/-/issues/29#note_3035763
             - Upgrade snowflake broker machine from Debian 10 
(https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40349)
             - Address TTP-03-001 WP1: Snowflake broker 
vulnerability(https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40329)
             - Vantage point maintaince
             - merge request processing
                 - Merge request reviews
     Next Week/TODO:
         - Merge request reviews


onyinyang: 2023-06-20
     Last week(s):
         - MSR talk
         - Working toward building tor-browser with lox-wasm binary to 
help out with
             integration work as needed: ran into many issues trying to 
do this with Fedora
     Next week:
         - Global Gathering Application
         - Fix Key Rotation MR for hyper v1
         - Working toward building tor-browser with lox-wasm binary to 
help out with
             integration work as needed: resolve build issues on Fedora
         - Work on outstanding milestone issues: 
https://gitlab.torproject.org/tpo/anti-censorship/lox/-/milestones/1#tab-issues
             - prepare for end to end testing of the Lox system with 
browser integration
         Later:
         - begin implementing some preliminary user feedback mechanism 
to identify bridge blocking based on Vecna's work
         - improve metrics collection/think about how to show Lox is 
working/valuable
         - sketch out Lox blog post/usage notes for forum

     (long term things were discussed at the meeting!): 
https://pad.riseup.net/p/tor-ac-community-azaleas-room-keep
         - brainstorming grouping strategies for Lox buckets (of 
bridges) and gathering context on how types of bridges are 
distributed/use in practice
             Question: What makes a bridge usable for a given user, and 
how can we encode that to best ensure we're getting the most appropriate 
resources to people?
                 1. Are there some obvious grouping strategies that we 
can already consider?
                     e.g., by PT, by bandwidth (lower bandwidth bridges 
sacrificed to open-invitation buckets?), by locale (to be matched with a 
requesting user's geoip or something?)
                 2. Does it make sense to group 3 bridges/bucket, so 
trusted users have access to 3 bridges (and untrusted users have access 
to 1)? More? Less?

theodorsm: 2023-06-20
         Last weeks:
             - Writing my thesis
             - Add randomized ClientHello fingerprints to library
         Next weeks:
             - Wait for pion upstream releases
             - Test Snowflake fork with covert-dtls
             - Taking time off (AFK)
         Help with:
             - Test Snowflake fork with covert-dtls



Facilitator Queue:
     onyinyang shelikhoo meskio
1. First available staff in the Facilitator Queue will be the 
facilitator for the meeting
2. After facilitating the meeting, the facilitator will be moved to the 
tail of the queue

-- 
---
onyinyang

GPG Fingerprint 3CC3 F8CC E9D0 A92F A108 38EF 156A 6435 430C 2036

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