Serve audio .m4a by range; remove DASH manifest rewriting

StreamingGateway/Configuration/StreamTicketValidationOptions.cs

@@ -17,5 +17,7 @@ public sealed class StreamTicketValidationOptions
 
     public string QueryParameterName { get; set; } = "t";
 
+    public string HeaderName { get; set; } = "X-Stream-Ticket";
+
     public string MediaPathPrefix { get; set; } = "/media";
 }

StreamingGateway/Middleware/TicketValidationMiddleware.cs

@@ -23,6 +23,11 @@ public sealed class TicketValidationMiddleware(
         }
 
         var token = context.Request.Query[options.QueryParameterName].ToString();
+        if (string.IsNullOrEmpty(token))
+        {
+            token = context.Request.Headers[options.HeaderName].ToString();
+        }
+
         var validation = await ticketValidator.ValidateTicketAsync(token);
 
         if (!validation.IsSuccess)