Users
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.
Related events
The following events have been manually collected in the metrics-timeline Git repository and might be related to the displayed graph.
The manually collected events in this table do not necessarily match the automatically generated possible censorship events shown in the graph.
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2017-06-12 | obfs4 |
Increased the file descriptor limit on default obfs4 bridges ndnop3 and ndnop5 from 4096 to 32768. They had been failing bootstrap attempts from a test location in the U.S. about 40% of the time.
graph showing failed connections |
| 2017-06-09 | ipv4 ipv6 |
geoip and geoip6 databases updated to "June 8 2017 Maxmind GeoLite2 Country" (geoip-db-digest AFD609025B66305AD9FA8E0B15AF4F2BC82271F1, geoip6-db-digest A69FD14ACE46EE695F589ACE0EB7B915285B51B4).
commit |
| 2017-06-07 | ipv6 obfs4 |
Tor Browser 7.0 released. Adds an IPv6 address for default obfs4 bridge Lisbeth. Adds new default obfs4 bridges frosty and dragon.
blog post IPv6 ticket frosty and dragon ticket |
| 2017-05-25 | obfs4 |
Set AssumeReachable 1 on the default obfs4 bridges cymrubridge31 and cymrubridge33 in an attempt to make them publish statistics.
mailing list post |
| 2017-05-23 to 2017-06-13 | obfs4 |
Default obfs4 bridge LeifEricson rejects connections due to a broken firewall forwarding rule. This didn't affect the bridges "real" obfs4 port, but it did affect the port at that time configured in Tor Browser.
|
| 2017-05-10 | Egypt <OR> Relays Unknown |
Drop in direct users from Egypt.
tor-talk post graph |
| 2017-05-08 | ipv4 ipv6 |
geoip and geoip6 databases updated to "May 2 2017 Maxmind GeoLite2 Country" (geoip-db-digest B2E5105287668771E34A66F90B34982D419727EF, geoip6-db-digest 8DA8AC3C8158CBFDF7DB53BBF73338246872371A).
commit |
| 2017-05-06 | snowflake |
Set AssumeReachable 1 on the Snowflake bridge 2B280B23E1107BB62ABFC40DDCC8824814F80A72 in an attempt to make it start publishing statistics.
mailing list post |
| 2017-04-30 | meek |
The meek-amazon bridge upgrades to meek-server 0.27.
|
| 2017-04-20 | meek obfs4 scramblesuit |
Tor Browser 7.0a3 is released. It changes the app.update.url. It removes the last remaining scramblesuit bridge. It changes the meek-amazon backend. It adds the new default obfs4 bridges cymrubridge31:80 and cymrubridge33:80.
blog post |
| 2017-04-19 | meek obfs4 |
Tor Browser 6.5.2 is released. It changes the app.update.url. It changes the meek-amazon backend. It adds the new default obfs4 bridges cymrubridge31:80 and cymrubridge33:80.
blog post comment about app.update.url |
| 2017-04-14 to 2017-08-20 | <OR> |
Directory authority maatuska's bwscanner stops operating, leading to a drop in traffic on some relays.
tor-consensus-health post about start tor-consensus-health post about end tor-dev thread analysis |
| 2017-04-06 | ipv4 ipv6 |
geoip and geoip6 databases updated to "April 4 2017 Maxmind GeoLite2 Country" (geoip-db-digest 0F3D4A456E5078CC9E49398ADCB04C40EA49B793, geoip6-db-digest 04F41F05FA167EF6EEE3FE953404AB0BCCD33008).
commit |
| 2017-03-22 | meek |
Orbot 15.4.0 beta-2 multi is released, containing the new meek-azure CDN configuration.
mailing list post commit |
| 2017-01-25 to 2017-04-05 | webstats |
Tor Browser update pings roughly halve. The beginning corresponds with the release of Tor Browser 6.5.2, which changed the app.update.url. The end doesn't correspond to any release.
ticket |