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Use IP_BIND_ADDRESS_NO_PORT when dialing the ORPort on Linux.

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When the orport-srcaddr option is set, we bind to a source IP address
before dialing the ORPort/ExtORPort. tor similarly binds to a source IP
address when OutboundBindAddress is set in torrc. Since tor 0.4.7.13,
tor sets IP_BIND_ADDRESS_NO_PORT, and because problems arise when some
programs use IP_BIND_ADDRESS_NO_PORT and some do not, we also have to
start using IP_BIND_ADDRESS_NO_PORT when we upgrade tor
(tpo/anti-censorship/pluggable-transports/snowflake#40270).

Related: tpo/anti-censorship/pluggable-transports/snowflake#40198
This commit is contained in:
David Fifield 2023-05-21 10:08:09 -06:00
parent 130b63ccdd
commit 9edaee6547
4 changed files with 63 additions and 1 deletions
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1
go.mod
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@ -20,5 +20,6 @@ require (
gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/goptlib v1.4.0
golang.org/x/crypto v0.6.0
golang.org/x/net v0.7.0
golang.org/x/sys v0.5.0
google.golang.org/protobuf v1.26.0
)