[tor-project] Anti-censorship team meeting notes, 2022-04-28

Hey everyone!

Here are our meeting logs:

And our meeting pad:

Anti-censorship work meeting pad



Next meeting: Thursday May 5th 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 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 ==

 \* polyanthum & gettor\-01 will be upgraded next week, the servers where bridgedb,rdsys,gettor and other anti\-censorship infra is hosted

== Discussion ==

 \* Distributed Snowflake Server Support
     \* Any feedbacks?
     \* https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40129#note_2797319
     \* No blocker issue discovered\.
     \* will first deploy the new broker, and give time for proxies to update
 \* removed smallerRichard builtin server
     \* https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/44
 \* RKS hackathon
     \* \(Discussion Skipped\)

== Actions ==


== Interesting links ==

 \* https://www.codastory.com/authoritarian-tech/kazakhstan-shut-down-its-internet-these-programmers-opened-a-backdoor/
 \* https://eprint.iacr.org/2020/114

== 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 ==

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: Increase number of cycles for felix bridges (!1) · Merge requests · The Tor Project / Anti-censorship / monit-configuration · GitLab

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:
- continue work on conjure PT
- continue snowflake maintenance tasks
Needs help with:

dcf: 2022-04-28
Last week:
- made graphs of the snowflake bridge since the server move 2 weeks ago Move bridge to a permanent faster server (#40111) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
Next week:
- look at STATUS VERSION proposal Add STATUS VERSION message for PT protcol (!63) · Merge requests · The Tor Project / Core / Tor Specifications · GitLab
- set up access control on the snowflake-02 bridge Set up a second snowflake bridge site (#40122) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
Help with:

arlolra: 2022-04-07
Last week:
- Merged the rest of snowflake !81
Next week:
- Get to snowflake-webext #10
- Figure out where in pion/webrtc ALPN should be configured and used
- Maybe add Chacha20Poly1305 to pion/dtls
GitHub - pion/dtls: DTLS 1.2 Server/Client implementation for Go
Make Snowflake's DTLS fingerprint more similar to popular WebRTC implementations (#40014) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
Help with:

maxb: 2021-09-23
Last week:
- Worked on uTLS for broker negotiation (#40054) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab re: utls for broker negotiation
- Had conversation with someone about upstream utls http round tripper feat: sketch out utls http.RoundTripper by bassosimone · Pull Request #74 · refraction-networking/utls · GitHub
- Too busy with work :confused:
Next week:
- _Really_ want to get a PR for utls round tripper

meskio: 2022-04-28
Last week:
- use bridgestrap results to select what bridges to distribute (rdsys#96)
- give rdsys a free software license (rdsys#107)
- removed smallerRichard builtin bridge (team#44)
- brainstorm on dnstt (trac#40001)
Next week:
- deploy telegram in rdsys (rdsys#101)
- advance on the onionsproutsbot deployment

Shelikhoo: 2022-04-28
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")
- [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] Implement metrics to measure snowflake churn(Implement metrics to measure snowflake churn (#34075) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab)
- [Research] Blocking of Snowflake in Turkmenistan, 2021-10-24

Itchy Onion: 2022-04-28
Last week:
- debugged a RACE 2.1.0 issue
- had a meeting with Georgetown folks (a recurring meeting to go over each other's channel code)
This week:
- go over snowflake code (in preparation for the next Georgetown meeting and also help with rebase snowflake rebasing)
- go over RACECAR docs

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