webrtc: prevent pion/webrtc from writing log lines (#2681)

go.mod

@@ -20,6 +20,7 @@ require (
 	github.com/notedit/rtmp v0.0.2
 	github.com/pion/ice/v2 v2.3.11
 	github.com/pion/interceptor v0.1.25
+	github.com/pion/logging v0.2.2
 	github.com/pion/rtcp v1.2.12
 	github.com/pion/rtp v1.8.3
 	github.com/pion/sdp/v3 v3.0.6
@@ -52,7 +53,6 @@ require (
 	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
 	github.com/pion/datachannel v1.5.5 // indirect
 	github.com/pion/dtls/v2 v2.2.7 // indirect
-	github.com/pion/logging v0.2.2 // indirect
 	github.com/pion/mdns v0.0.8 // indirect
 	github.com/pion/randutil v0.1.0 // indirect
 	github.com/pion/sctp v1.8.8 // indirect

internal/core/webrtc_manager.go

@@ -16,6 +16,7 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/pion/ice/v2"
+	"github.com/pion/logging"
 	pwebrtc "github.com/pion/webrtc/v3"
 
 	"github.com/bluenviron/mediamtx/internal/conf"
@@ -32,6 +33,14 @@ const (
 	webrtcPayloadMaxSize       = 1188 // 1200 - 12 (RTP header)
 )
 
+type nilWriter struct{}
+
+func (nilWriter) Write(p []byte) (int, error) {
+	return len(p), nil
+}
+
+var webrtcNilLogger = logging.NewDefaultLeveledLoggerForScope("", 0, &nilWriter{})
+
 func randInt63() (int64, error) {
 	var b [8]byte
 	_, err := rand.Read(b[:])
@@ -257,7 +266,7 @@ func newWebRTCManager(
 			ctxCancel()
 			return nil, err
 		}
-		iceUDPMux = pwebrtc.NewICEUDPMux(nil, m.udpMuxLn)
+		iceUDPMux = pwebrtc.NewICEUDPMux(webrtcNilLogger, m.udpMuxLn)
 	}
 
 	var iceTCPMux ice.TCPMux
@@ -270,7 +279,7 @@ func newWebRTCManager(
 			ctxCancel()
 			return nil, err
 		}
-		iceTCPMux = pwebrtc.NewICETCPMux(nil, m.tcpMuxLn, 8)
+		iceTCPMux = pwebrtc.NewICETCPMux(webrtcNilLogger, m.tcpMuxLn, 8)
 	}
 
 	m.api, err = webrtc.NewAPI(webrtc.APIConf{