install go2rtc on bob

installs_on_host/go2rtc/pkg/dvrip/dvrip.go

@@ -0,0 +1,39 @@
+package dvrip
+
+import "github.com/AlexxIT/go2rtc/pkg/core"
+
+func Dial(url string) (core.Producer, error) {
+	client := &Client{}
+	if err := client.Dial(url); err != nil {
+		return nil, err
+	}
+
+	conn := core.Connection{
+		ID:         core.NewID(),
+		FormatName: "dvrip",
+		Protocol:   "tcp",
+		RemoteAddr: client.conn.RemoteAddr().String(),
+		Transport:  client.conn,
+	}
+
+	if client.stream != "" {
+		prod := &Producer{Connection: conn, client: client}
+		if err := prod.probe(); err != nil {
+			return nil, err
+		}
+		return prod, nil
+	} else {
+		conn.Medias = []*core.Media{
+			{
+				Kind:      core.KindAudio,
+				Direction: core.DirectionSendonly,
+				Codecs: []*core.Codec{
+					// leave only one codec here for better compatibility with cameras
+					// https://github.com/AlexxIT/go2rtc/issues/1111
+					{Name: core.CodecPCMA, ClockRate: 8000, PayloadType: 8},
+				},
+			},
+		}
+		return &Backchannel{Connection: conn, client: client}, nil
+	}
+}