#28942: Evaluate pion WebRTC
-------------------------------------+-------------------------------
Reporter: backkem | Owner: cohosh
Type: enhancement | Status: assigned
Priority: Medium | Milestone:
Component: Circumvention/Snowflake | Version:
Severity: Normal | Resolution:
Keywords: ex-sponsor-19 | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor: Sponsor28-can
-------------------------------------+-------------------------------
Comment (by cohosh):
I got proxy-go building with pion/webrtc. The changes necessary were
fairly small and can be seen
[https://github.com/cohosh/snowflake/commit/8770de768e8852611bb470b9114180a7504b7758
here]. Datachannel creation and teardown appear to be working as expected
and some data is flowing through.
However, I'm having trouble bootstrapping the Tor client past 50%. Here's
a log of the pion port:
{{{
Jun 14 22:44:25.188 [notice] Tor 0.2.9.16 (git-9ef571339967c1e5) running
on Linux with Libevent 2.0.21-stable, OpenSSL 1.1.0j and Zlib 1.2.8.
Jun 14 22:44:25.188 [notice] Tor can't help you if you use it wrong! Learn
how to be safe at https://www.torproject.org/download/download#warning
Jun 14 22:44:25.188 [notice] Read configuration file "/go/bin/torrc-5".
Jun 14 22:44:25.190 [warn] Path for DataDirectory (datadir5) is relative
and will resolve to /go/bin/datadir5. Is this what you wanted?
Jun 14 22:44:25.191 [notice] Opening Socks listener on 127.0.0.1:9055
Jun 14 22:44:25.000 [notice] Parsing GEOIP IPv4 file /usr/share/tor/geoip.
Jun 14 22:44:25.000 [notice] Parsing GEOIP IPv6 file
/usr/share/tor/geoip6.
Jun 14 22:44:25.000 [notice] Bootstrapped 0%: Starting
Jun 14 22:44:25.000 [notice] Delaying directory fetches: No running
bridges
Jun 14 22:44:27.000 [notice] Bootstrapped 5%: Connecting to directory
server
Jun 14 22:44:27.000 [notice] Bootstrapped 10%: Finishing handshake with
directory server
Jun 14 22:44:30.000 [notice] Learned fingerprint
2B280B23E1107BB62ABFC40DDCC8824814F80A72 for bridge 0.0.3.0:1 (with
transport 'snowflake').
Jun 14 22:44:30.000 [notice] Bootstrapped 15%: Establishing an encrypted
directory connection
Jun 14 22:44:30.000 [notice] Bootstrapped 20%: Asking for networkstatus
consensus
Jun 14 22:44:30.000 [notice] new bridge descriptor 'flakey' (fresh):
$2B280B23E1107BB62ABFC40DDCC8824814F80A72~flakey at 0.0.3.0
Jun 14 22:44:30.000 [notice] I learned some more directory information,
but not enough to build a circuit: We have no usable consensus.
Jun 14 22:44:32.000 [notice] Bootstrapped 25%: Loading networkstatus
consensus
Jun 14 22:44:34.000 [notice] I learned some more directory information,
but not enough to build a circuit: We have no usable consensus.
Jun 14 22:44:34.000 [notice] Bootstrapped 40%: Loading authority key certs
Jun 14 22:44:34.000 [notice] Bootstrapped 45%: Asking for relay
descriptors
Jun 14 22:44:34.000 [notice] I learned some more directory information,
but not enough to build a circuit: We need more microdescriptors: we have
0/6533, and can only build 0% of likely paths. (We have 0% of guards bw,
0% of midpoint bw, and 0% of exit bw = 0% of path bw.)
Jun 14 22:44:34.000 [notice] Bootstrapped 50%: Loading relay descriptors
Jun 14 22:45:07.000 [notice] Delaying directory fetches: No running
bridges
}}}
compared to a log of using go-webrtc:
{{{
Jun 14 22:48:51.025 [notice] Tor 0.2.9.16 (git-9ef571339967c1e5) running
on Linux with Libevent 2.0.21-stable, OpenSSL 1.1.0j and Zlib 1.2.8.
Jun 14 22:48:51.025 [notice] Tor can't help you if you use it wrong! Learn
how to be safe at https://www.torproject.org/download/download#warning
Jun 14 22:48:51.025 [notice] Read configuration file "/go/bin/torrc-6".
Jun 14 22:48:51.026 [warn] Path for DataDirectory (datadir6) is relative
and will resolve to /go/bin/datadir6. Is this what you wanted?
Jun 14 22:48:51.027 [notice] Opening Socks listener on 127.0.0.1:9056
Jun 14 22:48:51.000 [notice] Parsing GEOIP IPv4 file /usr/share/tor/geoip.
Jun 14 22:48:51.000 [notice] Parsing GEOIP IPv6 file
/usr/share/tor/geoip6.
Jun 14 22:48:51.000 [notice] Bootstrapped 0%: Starting
Jun 14 22:48:51.000 [notice] Delaying directory fetches: No running
bridges
Jun 14 22:48:53.000 [notice] Bootstrapped 5%: Connecting to directory
server
Jun 14 22:48:53.000 [notice] Bootstrapped 10%: Finishing handshake with
directory server
Jun 14 22:48:53.000 [notice] Learned fingerprint
2B280B23E1107BB62ABFC40DDCC8824814F80A72 for bridge 0.0.3.0:1 (with
transport 'snowflake').
Jun 14 22:48:53.000 [notice] Bootstrapped 15%: Establishing an encrypted
directory connection
Jun 14 22:48:53.000 [notice] Bootstrapped 20%: Asking for networkstatus
consensus
Jun 14 22:48:53.000 [notice] new bridge descriptor 'flakey' (fresh):
$2B280B23E1107BB62ABFC40DDCC8824814F80A72~flakey at 0.0.3.0
Jun 14 22:48:53.000 [notice] I learned some more directory information,
but not enough to build a circuit: We have no usable consensus.
Jun 14 22:48:54.000 [notice] Bootstrapped 25%: Loading networkstatus
consensus
Jun 14 22:48:58.000 [notice] I learned some more directory information,
but not enough to build a circuit: We have no usable consensus.
Jun 14 22:48:58.000 [notice] Bootstrapped 40%: Loading authority key certs
Jun 14 22:48:58.000 [notice] Bootstrapped 45%: Asking for relay
descriptors
Jun 14 22:48:58.000 [notice] I learned some more directory information,
but not enough to build a circuit: We need more microdescriptors: we have
0/6533, and can only build 0% of likely paths. (We have 0% of guards bw,
0% of midpoint bw, and 0% of exit bw = 0% of path bw.)
Jun 14 22:48:58.000 [notice] Bootstrapped 50%: Loading relay descriptors
Jun 14 22:49:01.000 [notice] Bootstrapped 57%: Loading relay descriptors
Jun 14 22:49:01.000 [notice] Bootstrapped 65%: Loading relay descriptors
Jun 14 22:49:01.000 [notice] Bootstrapped 71%: Loading relay descriptors
Jun 14 22:49:01.000 [notice] Bootstrapped 78%: Loading relay descriptors
Jun 14 22:49:01.000 [notice] Bootstrapped 80%: Connecting to the Tor
network
Jun 14 22:49:02.000 [notice] Bootstrapped 90%: Establishing a Tor circuit
Jun 14 22:49:02.000 [notice] Tor has successfully opened a circuit. Looks
like client functionality is working.
Jun 14 22:49:02.000 [notice] Bootstrapped 100%: Done
}}}
I've reproduced this several times with no luck getting past 50%. Going to
take a look at whether the messages are getting through as expected.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28942#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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