anti-censorship-team March 2025

anti-censorship-team@lists.torproject.org

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2 discussions

Snowflake bridges using SQS
by Michael Rogers 26 Mar '25

26 Mar '25

Hi all, After updating Briar's bridge config to use the current settings from Moat, we're seeing two Snowflake bridges consistently failing in our CI tests. They're the two bridges that use SQS. Here's a snippet from the log: ``` INFO: NOTICE Managed proxy "/builds/briar/onionwrapper/onionwrapper-java/test.tmp/35/lyrebird": offer created Feb 04, 2025 1:12:34 PM org.briarproject.onionwrapper.AbstractTorWrapper message INFO: NOTICE Managed proxy "/builds/briar/onionwrapper/onionwrapper-java/test.tmp/35/lyrebird": broker failure operation error SQS: GetQueueUrl, https response error StatusCode: 400, RequestID: 60e91cfa-a2a0-55db-beb0-7ce6b621d324, AWS.SimpleQueueService.NonExistentQueue: The specified queue does not exist. ``` Does the queue really not exist, or does this point to some other issue, like the bridges being geoIP restricted or the app needing to pass some extra information to the transport? Thanks, Michael

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SQS rendezvous exceeded free tier usage
by Cecylia Bocovich 05 Mar '25

05 Mar '25

I got a notification from AWS that our SQS rendezvous service exceeded the free-tier usage this month with over 1,000,000 SQS API requests. This is in some sense exciting news, because it shows that the rendezvous channel is effective and getting some use. It does, however mean that we will have to start paying for the service. The current billing period falls on month boundaries, from January 1st to January 31st. The budget action fired on January 9th, which is pretty early in the month. Looking at our broker metrics[0,1], there were approximately 38,608 client polls using SQS. That's approximately 2.5 requests per poll, which is about what I'd expect. It's reassuring to know that the budget actions work. I'm going to set them a little higher, to something I can reasonably afford. I don't yet know how the cost will scale with the number of polls, and how that will compare with the cost of domain fronted requests. [0] https://snowflake-broker.torproject.net/metrics [1] https://metrics.torproject.org/collector.html#type-snowflake-stats

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anti-censorship-team March 2025