[tor-bugs] #30350 [Obfuscation/Snowflake]: Hello, in China, currently, Tor Browser 8.5a11 version can't connect to Tor network through Snowflake bridge.

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri May 3 15:19:22 UTC 2019


#30350: Hello, in China, currently, Tor Browser 8.5a11 version can't connect to Tor
network through Snowflake bridge.
-----------------------------------+--------------------------
 Reporter:  amiableclarity2011     |          Owner:  cohosh
     Type:  defect                 |         Status:  accepted
 Priority:  Medium                 |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Normal                 |     Resolution:
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
-----------------------------------+--------------------------

Comment (by amiableclarity2011):

 This evening, my connection to Tor network through Snowflake bridge was
 terminated within 40 minutes. Obviously China's firewall can recognize the
 characteristic of the traffic which flows to Snowflake proxies and
 automatically block the Snowflake proxies that I use.

 Below are tor log messages.

 5/3/19, 15:11:46.680 [NOTICE] DisableNetwork is set. Tor will not make or
 accept non-control network connections. Shutting down all existing
 connections.
 5/3/19, 15:11:46.680 [NOTICE] Opening Socks listener on 127.0.0.1:9150
 5/3/19, 15:11:46.680 [NOTICE] Opened Socks listener on 127.0.0.1:9150
 5/3/19, 15:11:47.470 [NOTICE] Bootstrapped 1% (conn_pt): Connecting to
 pluggable transport
 5/3/19, 15:11:47.470 [NOTICE] Bootstrapped 2% (conn_done_pt): Connected to
 pluggable transport
 5/3/19, 15:12:27.500 [NOTICE] Bootstrapped 10% (conn_done): Connected to a
 relay
 5/3/19, 15:12:57.116 [WARN] Problem bootstrapping. Stuck at 10%
 (conn_done): Connected to a relay. (DONE; DONE; count 1; recommendation
 warn; host 2B280B23E1107BB62ABFC40DDCC8824814F80A72 at 0.0.3.0:1)
 5/3/19, 15:12:57.116 [WARN] 1 connections have failed:
 5/3/19, 15:12:57.116 [WARN]  1 connections died in state handshaking (TLS)
 with SSL state SSLv2/v3 read server hello A in HANDSHAKE
 5/3/19, 15:12:57.140 [NOTICE] Closing no-longer-configured Socks listener
 on 127.0.0.1:9150
 5/3/19, 15:12:57.140 [NOTICE] DisableNetwork is set. Tor will not make or
 accept non-control network connections. Shutting down all existing
 connections.
 5/3/19, 15:12:57.141 [NOTICE] Delaying directory fetches: DisableNetwork
 is set.
 5/3/19, 15:12:57.141 [WARN] Pluggable Transport process terminated with
 status code 0


 Could you please solve this problem? Thank you very much for your help. I
 really appreciate it.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30350#comment:12>
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