Zac Gaetano
917c353e03
Vendors github.com/pion/webrtc/v4 v4.2.11 and its transitive dependencies (datachannel, dtls/v3, ice/v4, interceptor, logging, mdns/v2, sctp, sdp/v3, srtp/v3, stun/v3, transport/v4, turn/v4).
47 lines
1.6 KiB
Go
47 lines
1.6 KiB
Go
package webrtc
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import (
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"github.com/pion/webrtc/v4"
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)
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// BuildICEConfig translates a Config into the two Pion config pieces every
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// PeerConnection needs: a webrtc.Configuration (with ICE servers) and a
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// SettingEngine (with NAT1To1 and port range tuning).
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//
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// The returned *SettingEngine may be nil if no engine-level tuning is
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// required (i.e. PublicIP unset and UDPPortRange at defaults). Callers
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// should only pass it to webrtc.NewAPI when non-nil.
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func BuildICEConfig(c Config) (webrtc.Configuration, *webrtc.SettingEngine, error) {
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if err := c.Validate(); err != nil {
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return webrtc.Configuration{}, nil, err
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}
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rtcConfig := webrtc.Configuration{
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ICEServers: make([]webrtc.ICEServer, 0, len(c.ICEServers)),
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}
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for _, uri := range c.ICEServers {
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rtcConfig.ICEServers = append(rtcConfig.ICEServers, webrtc.ICEServer{
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URLs: []string{uri},
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})
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}
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var se *webrtc.SettingEngine
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if c.PublicIP != "" || c.UDPPortRange.Low > 0 {
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engine := webrtc.SettingEngine{}
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if c.PublicIP != "" {
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engine.SetNAT1To1IPs([]string{c.PublicIP}, webrtc.ICECandidateTypeHost)
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}
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// Constrain the ephemeral UDP range Pion allocates for ICE candidates.
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// Note: this is a separate concern from our FFmpeg→Source UDP ports;
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// Pion uses its own port pool for the WebRTC media path.
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if c.UDPPortRange.Low > 0 && c.UDPPortRange.High >= c.UDPPortRange.Low {
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if err := engine.SetEphemeralUDPPortRange(
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uint16(c.UDPPortRange.Low), uint16(c.UDPPortRange.High)); err != nil {
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return webrtc.Configuration{}, nil, err
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}
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}
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se = &engine
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}
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return rtcConfig, se, nil
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}
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