add env variables to rtsp

actioncam.go

@@ -15,6 +15,7 @@ import (
 	"path/filepath"
 	"runtime"
 	"runtime/pprof"
+	"strconv"
 
 	"github.com/jonas-koeritz/actioncam/libipcamera"
 	"github.com/jonas-koeritz/actioncam/rtsp"
@@ -254,7 +255,24 @@ func main() {
 		Short: "Start an RTSP-Server serving the cameras preview.",
 		Args:  cobra.MaximumNArgs(1),
 		Run: func(cmd *cobra.Command, args []string) {
-			rtspServer := rtsp.CreateServer(applicationContext, "127.0.0.1", 8554, camera)
+			var port_string = os.Getenv("PORT");
+
+			if(port_string == "") {
+				port_string = "8554"
+			}
+
+			port, erra := strconv.Atoi(port_string);
+			if erra != nil {
+				log.Printf("ERROR: %s\n", erra)
+				return
+			}
+
+			var host = os.Getenv("HOST");
+			if(host == "") {
+				host = "127.0.0.1"
+			}
+
+			rtspServer := rtsp.CreateServer(applicationContext, host, port, camera)
 			defer rtspServer.Stop()
 
 			log.Printf("Created RTSP Server\n")