We estimate the number of users by analyzing the requests induced by clients to relays and bridges.
This graph shows the estimated number of directly-connecting clients; that is, it excludes clients connecting via bridges. These estimates are derived from the number of directory requests counted on directory authorities and mirrors. Relays resolve client IP addresses to country codes, so that graphs are available for most countries. Furthermore, it is possible to display indications of censorship events as obtained from an anomaly-based censorship-detection system (for more details, see this technical report). For further details check the documentation on Reproducible Metrics.
The following events have been manually collected in the metrics-timeline Git repository and might be related to the displayed graph.
Dates | Places/Protocols | Description and Links |
---|---|---|
2020-06-02 | snowflake |
Release of Tor Browser 10.0a1, the first release with Snowflake for Android.
blog post ticket |
2020-05-22 | snowflake |
Release of Tor Browser 9.5a13, the first release with Turbo Tunnel session persistence features for Snowflake.
blog post ticket |
2020-04-23 | snowflake |
Redeployed the Snowflake bridge with support for non–Turbo Tunnel clients and KCP–Turbo Tunnel clients, removing support for QUIC–Turbo Tunnel clients.
comment |
2020-02-22 | snowflake |
Made the Snowflake bridge stop reporting client IP addresses of 0.0.0.0. This also affects log messages that report how many client connections had an attached IP address.
comment |
2020-02-19 | snowflake |
Deployed a Turbo Tunnel–capable Snowflake bridge.
comment |
2020-02-18 | snowflake |
Outage of the Snowflake bridge caused by memory exhaustion.
ticket |
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