archives/snowflake
2
0
Fork 0
mirror of https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake.git synced 2025-10-13 20:11:19 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Proxy: add outbound-address config

Browse source
This commit is contained in:
itchyonion 2022-12-12 13:02:25 -08:00
parent 36d5d2dd83
commit fb35e80b0a
No known key found for this signature in database
GPG key ID: 4B87B720348500EA
3 changed files with 16 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

9
proxy/lib/snowflake.go
View file

@ -114,6 +114,8 @@ type SnowflakeProxy struct {
KeepLocalAddresses bool
// RelayURL is the URL of the Snowflake server that all traffic will be relayed to
RelayURL string
// OutboundAddress specify an IP address to use as SDP host candidate
OutboundAddress string
// Ephemeral*Port limits the pool of ports that ICE UDP connections can allocate from
EphemeralMinPort uint16
EphemeralMaxPort uint16
@ -360,6 +362,11 @@ func (sf *SnowflakeProxy) makeWebRTCAPI() *webrtc.API {
}
}
if sf.OutboundAddress != "" {
// replace SDP host candidates with the given IP without validation
// still have server reflexive candidates to fall back on
settingsEngine.SetNAT1To1IPs([]string{sf.OutboundAddress}, webrtc.ICECandidateTypeHost)
}
settingsEngine.SetICEMulticastDNSMode(ice.MulticastDNSModeDisabled)
return webrtc.NewAPI(webrtc.WithSettingEngine(settingsEngine))
@ -672,8 +679,8 @@ func (sf *SnowflakeProxy) checkNATType(config webrtc.Configuration, probeURL str
}
offer := pc.LocalDescription()
log.Printf("Offer: \n\t%s", strings.ReplaceAll(offer.SDP, "\n", "\n\t"))
sdp, err := util.SerializeSessionDescription(offer)
log.Printf("Offer: %s", sdp)
if err != nil {
log.Printf("Error encoding probe message: %s", err.Error())
return