Hi all,

Here are our meeting minutes:

http://meetbot.debian.net/tor-meeting/2020/tor-meeting.2020-05-07-17.58.html

And here is our meeting pad:

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

Next meeting: Thursday May 7th 18:00 UTC

Weekly meetings, every Thursday at 18:00 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: https://gitlab.torproject.org/torproject/anti-censorship/roadmap/boards * Our roadmap consists of a subset of trac tickets. For 2020 Q1, the trac keyword is anti-censorship-roadmap-2020Q1 * Next planning session: last week of April * The anti-censorship team's wiki page: https://trac.torproject.org/projects/tor/wiki/org/teams/AntiCensorshipTeam * Past meeting notes can be found at: https://lists.torproject.org/pipermail/tor-project/ * GetTor's roadmap: https://gitlab.torproject.org/groups/torproject/anti-censorship/gettor-proje... * Tickets that need reviews: from sponsors we are working on: * https://trac.torproject.org/projects/tor/wiki/org/sponsors/Sponsor30 * https://trac.torproject.org/projects/tor/wiki/org/sponsors/Sponsor28 * Anti-censorship related tickets that we want other teams to fix: * https://pad.riseup.net/p/tor-anti-censorship-tickets-keep

------------------------- --- May 7th 2020 -- -------------------------

== Announcements ==

* We have a GSoC student, Hashik, who is joining the team starting this week and working on building a Snowflake proxy app for Android

== Discussion ==

* Shall we move our anti-censorship meeting time to 17:00 or 16:00 UTC? * Will make it easier to attend for folks in Asia * What works or doesn't work for you? * Any beginning circumvention developers want experience implementing a pluggable transport? David posted a roadmap for a DNS transport. * https://lists.torproject.org/pipermail/anti-censorship-team/2020-May/000089....

== Actions ==

*

== Interesting links ==

* https://jewlscholar.mtsu.edu/bitstream/handle/mtsu/6199/Sheffey_mtsu_0170N_1... * MSc thesis on "Adversarially Enhanced Traffic Obfuscation" * By the author of "Improving Meek With Adversarial Techniques" from FOCI 2019, https://censorbib.nymity.ch/#Sheffey2019a * https://github.com/net4people/bbs/issues/13

== Reading group ==

* We will discuss "Salmon: Robust Proxy Distribution for Censorship Circumvention" on May 14 * https://censorbib.nymity.ch/#Douglas2016a * 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 (related to anti-censorship work). Help with: - Something you may need help with.

phw: This week (2020-05-07): * Read Salmon paper. * Reviewed #34061, #34062, and #34089. * Wrapped up #30794 (lightweight censorship analyser) for now because it's working and usable so far. * More work on wolpertinger. * Filed #34089 to expose bridges.torproject.org/wolpertinger/ * Filed #34116 to look into setting up OONI's MetaDB on polyanthum (to get OONI's test results) * Wrote code to read cached-extrainfo docs and bridges stored in SQLite DB. * Some coordination with Sina regarding meek-azure. * Things are not looking good; currently no funding in sight. * A little bit of GSoC coordination. * Improved BridgeDB's email autoresponder test in #12802. * Looked into #33945 to figure out why BridgeDB's email autoresponder fails after a while. * Still not sure. Will deploy work-in-progress fixes, which may help. * Attended onionperf call. Will probably be working one day per week on it. Next week: * Help with: * https://trac.torproject.org/projects/tor/ticket/12802

Gaba: () Last week (2020-03-30): * not much related to anti-censorship This week (planned): * anti-censorship retrospective

cecylia (cohosh): last updated 2020-05-07 Last week: Last week: - android reproducible build for snowflake (#28672) - GetTor twitter responder fixes (#27330) - Reproduced chrome proxy hang (#31278) - Discussed transifex issues with snowflake - snowflake webextension reviews - Investigated running a STUN server at the broker (#25591) - Created a ticket for using RFC5780 to determine the NAT type of peers (#34129) - Made PI meeting slides for next week - Onboarding Hashik (our new GSoC student) - fix for chrome idle proxy hang (#31278) This week: - sponsor 28 PI meeting (Monday, Tuesday) - More work on reviving the twitter responder in GetTor (#33036, #27330) - look at old GetTor mirrors (#33893) - More work on NAT type discovery (#34129) - Take a look at the multiplexing design for Snowflake (#25723) - investigate #33669 - Follow up on discussions of debian obfs4proxy package Needs help with: - review of GetTor twitter fixes (#27330) - review of chrome idle proxy hang fix (#31278)

juggy : Temporary hiatus due to finals prep This week: - Researched XUL and dug into previous conversations around integrating Tor Launcher into Tor Browser, why porting to Web Extensions might not work, etc. Next week: - Implement audio captchas in moat, figure out how to reduce audio captcha request size - Keep studying BridgeDB Help with: -

arlolra: 2020-05-07 Last week: - webext repo versioning / publishing #34140, #34126, #34132, #34127 Next week: - follow ups to #33365 - start on #31201 Help with: -

dcf: 2020-05-07 Last week: - merged patch to reduce Snowflake client connection timeout (#34042) - converted snowflake turbotunnel merge (#34043) into a Tor Browser ticket Next week: - review fix for Chrome proxy hang (#31278) - check with Kyle about snowflake fingerprinting results - share access to the snowflake broker CDN configuration (#30510) Help with:

agix:2020-05-07 Last week: - Incoperated some more feedback on #33835 Next week: - Started work on #27984 Help with: -

catalyst: 2020-04-16 last week: - more work on #5304 (PT outbound bind address) - started looking at #29128 (assemble bridge line) this week: - more background research and work on s28/s30 tickets

thymbahutymba: 2020-04-02 Last week: - CI/CD pipeline for multiarch docker images, which has a problem with the apt tor version even though the apt repository have been changed into the Dockerfile. Next week: Help with: