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improvement: use SetIPFilter for local addrs

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Closes https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40271.
Supersedes https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/417.

This simplifies the code and (probably) removes the need for
`StripLocalAddresses`, although makes us more dependent on Pion.

Signed-off-by: Cecylia Bocovich <cohosh@torproject.org>
This commit is contained in:
WofWca 2024-11-25 01:43:29 +04:00 • committed by Cecylia Bocovich
parent 43799819a1
commit ae5bd52821
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6 changed files with 56 additions and 32 deletions
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9
client/lib/rendezvous.go
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@ -127,15 +127,6 @@ func newBrokerChannelFromConfig(config ClientConfig) (*BrokerChannel, error) {
func (bc *BrokerChannel) Negotiate(offer *webrtc.SessionDescription) (
*webrtc.SessionDescription, error,
) {
// Ideally, we could specify an `RTCIceTransportPolicy` that would handle
// this for us. However, "public" was removed from the draft spec.
// See https://developer.mozilla.org/en-US/docs/Web/API/RTCConfiguration#RTCIceTransportPolicy_enum
if !bc.keepLocalAddresses {
offer = &webrtc.SessionDescription{
Type: offer.Type,
SDP: util.StripLocalAddresses(offer.SDP),
}
}
offerSDP, err := util.SerializeSessionDescription(offer)
if err != nil {
return nil, err