Workaround for shadow in lieu of AF_NETLINK support

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
No known key found for this signature in database
GPG key ID: C4D5E79D22B25316
2 changed files with 8 additions and 1 deletions

View file

@ -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 {