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