archives/snowflake
2
0
Fork 0
mirror of https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake.git synced 2025-10-13 11:11:30 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Use IP_BIND_ADDRESS_NO_PORT when dialing the ORPort on Linux.

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

14
server/dial.go Normal file
View file

@ -0,0 +1,14 @@
//go:build !linux
// +build !linux
package main
import "syscall"
// dialerControl does nothing.
//
// On Linux, this function would set the IP_BIND_ADDRESS_NO_PORT socket option
// in preparation for a future bind-before-connect.
func dialerControl(network, address string, c syscall.RawConn) error {
return nil
}