Fix listening on hassio interface

cmd/hass/api.go

@@ -6,6 +6,7 @@ import (
 	"github.com/AlexxIT/go2rtc/cmd/api"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
 	"github.com/AlexxIT/go2rtc/cmd/webrtc"
+	"net"
 	"net/http"
 	"net/url"
 	"strings"
@@ -133,6 +134,25 @@ func initAPI() {
 	})
 }
 
+func HassioAddr() string {
+	ints, _ := net.Interfaces()
+
+	for _, i := range ints {
+		if i.Name != "hassio" {
+			continue
+		}
+
+		addrs, _ := i.Addrs()
+		for _, addr := range addrs {
+			if addr, ok := addr.(*net.IPNet); ok {
+				return addr.IP.String()
+			}
+		}
+	}
+
+	return ""
+}
+
 func rtspStream(url string) *streams.Stream {
 	if strings.HasPrefix(url, "rtsp://") {
 		if i := strings.IndexByte(url[7:], '/'); i > 0 {