Use explicit retry-after format

KSemenenko · KSemenenko · commit d143d0770632 · 2026-05-05T13:19:05.000+02:00
diff --git a/ManagedCode.Orleans.RateLimiting.Client/Middlewares/RateLimitMiddlewareConstants.cs b/ManagedCode.Orleans.RateLimiting.Client/Middlewares/RateLimitMiddlewareConstants.cs
@@ -17,5 +17,6 @@ internal static class RateLimitMiddlewareConstants
     public const string ConfigurationMetadataKey = "configuration";
     public const string PartitionMetadataKey = "partition";
     public const string PathMetadataKey = "path";
+    public const string RetryAfterTimeSpanFormat = "c";
     public const string SignalRRateLimitedLogMessage = "SignalR invocation {HubMethodName} was rate limited: {Reason}";
 }
diff --git a/ManagedCode.Orleans.RateLimiting.Client/Middlewares/RateLimitResponseWriter.cs b/ManagedCode.Orleans.RateLimiting.Client/Middlewares/RateLimitResponseWriter.cs
@@ -18,7 +18,7 @@ await httpContext.Response.WriteAsJsonAsync(new RateLimitRejectedResponse(
             StatusCodes.Status429TooManyRequests,
             RateLimitMiddlewareConstants.TooManyRequestsError,
             lease.Reason,
-            lease.RetryAfter.ToString(null, CultureInfo.InvariantCulture)));
+            lease.RetryAfter.ToString(RateLimitMiddlewareConstants.RetryAfterTimeSpanFormat, CultureInfo.InvariantCulture)));
     }
 
     private sealed record RateLimitRejectedResponse(int StatusCode, string Error, string Reason, string RetryAfter);

Original file line number	Diff line number	Diff line change
`@@ -17,5 +17,6 @@ internal static class RateLimitMiddlewareConstants`
`17`	`17`	`public const string ConfigurationMetadataKey = "configuration";`
`18`	`18`	`public const string PartitionMetadataKey = "partition";`
`19`	`19`	`public const string PathMetadataKey = "path";`
	`20`	`+ public const string RetryAfterTimeSpanFormat = "c";`
`20`	`21`	`public const string SignalRRateLimitedLogMessage = "SignalR invocation {HubMethodName} was rate limited: {Reason}";`
`21`	`22`	`}`
Original file line number	Diff line number	Diff line change
`@@ -18,7 +18,7 @@ await httpContext.Response.WriteAsJsonAsync(new RateLimitRejectedResponse(`
`18`	`18`	`StatusCodes.Status429TooManyRequests,`
`19`	`19`	`RateLimitMiddlewareConstants.TooManyRequestsError,`
`20`	`20`	`lease.Reason,`
`21`		`- lease.RetryAfter.ToString(null, CultureInfo.InvariantCulture)));`
	`21`	`+ lease.RetryAfter.ToString(RateLimitMiddlewareConstants.RetryAfterTimeSpanFormat, CultureInfo.InvariantCulture)));`
`22`	`22`	`}`
`23`	`23`
`24`	`24`	`private sealed record RateLimitRejectedResponse(int StatusCode, string Error, string Reason, string RetryAfter);`