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Workaround for shadow in lieu of AF_NETLINK support

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For details, see https://github.com/shadow/shadow/issues/2980
This commit is contained in:
Cecylia Bocovich 2023-05-30 15:30:07 -04:00 • committed by Shelikhoo
parent 0cb2975fd8
commit b632c7d49c
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2 changed files with 8 additions and 1 deletions
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7
client/lib/webrtc.go
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@ -12,6 +12,7 @@ import (
"time"
"github.com/pion/ice/v2"
"github.com/pion/transport/v2/stdnet"
"github.com/pion/webrtc/v3"
"gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/v2/common/event"
)
@ -194,6 +195,12 @@ func (c *WebRTCPeer) preparePeerConnection(config *webrtc.Configuration) error {
var err error
s := webrtc.SettingEngine{}
s.SetICEMulticastDNSMode(ice.MulticastDNSModeDisabled)
// Use the SetNet setting https://pkg.go.dev/github.com/pion/webrtc/v3#SettingEngine.SetNet
// to get snowflake working in shadow (where the AF_NETLINK family is not implemented).
// These two lines of code functionally revert a new change in pion by silently ignoring
// when net.Interfaces() fails, rather than throwing an error
vnet, _ := stdnet.NewNet()
s.SetNet(vnet)
api := webrtc.NewAPI(webrtc.WithSettingEngine(s))
c.pc, err = api.NewPeerConnection(*config)
if err != nil {

2
go.mod
View file

@ -8,6 +8,7 @@ require (
github.com/pion/ice/v2 v2.3.8
github.com/pion/sdp/v3 v3.0.6
github.com/pion/stun v0.6.1
github.com/pion/transport/v2 v2.2.1
github.com/pion/webrtc/v3 v3.2.11
github.com/prometheus/client_golang v1.16.0
github.com/prometheus/client_model v0.4.0
@ -49,7 +50,6 @@ require (
github.com/pion/rtp v1.7.13 // indirect
github.com/pion/sctp v1.8.7 // indirect
github.com/pion/srtp/v2 v2.0.15 // indirect
github.com/pion/transport/v2 v2.2.1 // indirect
github.com/pion/turn/v2 v2.1.2 // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect