diff --git a/lib/REST.php b/lib/REST.php
index f7818e5..56dbf11 100644
--- a/lib/REST.php
+++ b/lib/REST.php
@@ -7,11 +7,11 @@ declare(strict_types=1);
 namespace JKingWeb\Arsse;
 
 use JKingWeb\Arsse\Misc\URL;
+use JKingWeb\Arsse\Misc\HTTP;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\ServerRequestFactory;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 class REST {
     public const API_LIST = [
@@ -101,7 +101,7 @@ class REST {
                 $res = $drv->dispatch($req);
             }
         } catch (REST\Exception501 $e) {
-            $res = new EmptyResponse(501);
+            $res = HTTP::respEmpty(501);
         }
         // modify the response so that it has all the required metadata
         return $this->normalizeResponse($res, $req);
@@ -180,7 +180,7 @@ class REST {
         }
         // if the response is to a HEAD request, the body should be omitted
         if ($req && $req->getMethod() === "HEAD") {
-            $res = new EmptyResponse($res->getStatusCode(), $res->getHeaders());
+            $res = HTTP::respEmpty($res->getStatusCode(), $res->getHeaders());
         }
         // if an Allow header field is present, normalize it
         if ($res->hasHeader("Allow")) {
diff --git a/lib/REST/Fever/API.php b/lib/REST/Fever/API.php
index 7ad69ba..72f3e9b 100644
--- a/lib/REST/Fever/API.php
+++ b/lib/REST/Fever/API.php
@@ -10,13 +10,12 @@ use JKingWeb\Arsse\Arsse;
 use JKingWeb\Arsse\Context\Context;
 use JKingWeb\Arsse\Misc\ValueInfo as V;
 use JKingWeb\Arsse\Misc\Date;
-use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\Misc\HTTP;
+use JKingWeb\Arsse\Db\ExceptionInput;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse;
 use Laminas\Diactoros\Response\XmlResponse;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 class API extends \JKingWeb\Arsse\REST\AbstractHandler {
     public const LEVEL = 3;
@@ -62,11 +61,11 @@ class API extends \JKingWeb\Arsse\REST\AbstractHandler {
         $P = $this->normalizeInputPost($req->getParsedBody() ?? []);
         if (!isset($G['api'])) {
             // the original would have shown the Fever UI in the absence of the "api" parameter, but we'll return 404
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
         switch ($req->getMethod()) {
             case "OPTIONS":
-                return new EmptyResponse(204, [
+                return HTTP::respEmpty(204, [
                     'Allow'  => "POST",
                     'Accept' => implode(", ", self::ACCEPTED_TYPES),
                 ]);
@@ -82,7 +81,7 @@ class API extends \JKingWeb\Arsse\REST\AbstractHandler {
                     $out['auth'] = 1;
                 } elseif (Arsse::$conf->userHTTPAuthRequired || Arsse::$conf->userPreAuth || $req->getAttribute("authenticationFailed", false)) {
                     // otherwise if HTTP authentication failed or is required, deny access at the HTTP level
-                    return new EmptyResponse(401);
+                    return HTTP::respEmpty(401);
                 }
                 // produce a full response if authenticated or a basic response otherwise
                 if ($this->logIn(strtolower($P['api_key'] ?? ""))) {
@@ -93,7 +92,7 @@ class API extends \JKingWeb\Arsse\REST\AbstractHandler {
                 // return the result, possibly formatted as XML
                 return $this->formatResponse($out, ($G['api'] === "xml"));
             default:
-                return new EmptyResponse(405, ['Allow' => "OPTIONS,POST"]);
+                return HTTP::respEmpty(405, ['Allow' => "OPTIONS,POST"]);
         }
     }
 
diff --git a/lib/REST/Miniflux/Status.php b/lib/REST/Miniflux/Status.php
index 367a7a6..c829193 100644
--- a/lib/REST/Miniflux/Status.php
+++ b/lib/REST/Miniflux/Status.php
@@ -6,9 +6,9 @@
 declare(strict_types=1);
 namespace JKingWeb\Arsse\REST\Miniflux;
 
+use JKingWeb\Arsse\Misc\HTTP;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Laminas\Diactoros\Response\EmptyResponse;
 use Laminas\Diactoros\Response\TextResponse;
 
 class Status extends \JKingWeb\Arsse\REST\AbstractHandler {
@@ -18,13 +18,13 @@ class Status extends \JKingWeb\Arsse\REST\AbstractHandler {
     public function dispatch(ServerRequestInterface $req): ResponseInterface {
         $target = parse_url($req->getRequestTarget())['path'] ?? "";
         if (!in_array($target, ["/version", "/healthcheck"])) {
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
         $method = $req->getMethod();
         if ($method === "OPTIONS") {
-            return new EmptyResponse(204, ['Allow'  => "HEAD, GET"]);
+            return HTTP::respEmpty(204, ['Allow'  => "HEAD, GET"]);
         } elseif ($method !== "GET") {
-            return new EmptyResponse(405, ['Allow'  => "HEAD, GET"]);
+            return HTTP::respEmpty(405, ['Allow'  => "HEAD, GET"]);
         }
         $out = "";
         if ($target === "/version") {
diff --git a/lib/REST/Miniflux/V1.php b/lib/REST/Miniflux/V1.php
index 6897472..4ed828a 100644
--- a/lib/REST/Miniflux/V1.php
+++ b/lib/REST/Miniflux/V1.php
@@ -19,6 +19,7 @@ use JKingWeb\Arsse\ImportExport\OPML;
 use JKingWeb\Arsse\ImportExport\Exception as ImportException;
 use JKingWeb\Arsse\Misc\Date;
 use JKingWeb\Arsse\Misc\URL;
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\Misc\ValueInfo as V;
 use JKingWeb\Arsse\REST\Exception;
 use JKingWeb\Arsse\Rule\Rule;
@@ -26,7 +27,6 @@ use JKingWeb\Arsse\User\ExceptionConflict;
 use JKingWeb\Arsse\User\Exception as UserException;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Laminas\Diactoros\Response\EmptyResponse;
 use Laminas\Diactoros\Response\JsonResponse as Response;
 use Laminas\Diactoros\Response\TextResponse as GenericResponse;
 use Laminas\Diactoros\Uri;
@@ -295,10 +295,10 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
             // @codeCoverageIgnoreStart
         } catch (Exception $e) {
             // if there was a REST exception return 400
-            return new EmptyResponse(400);
+            return HTTP::respEmpty(400);
         } catch (AbstractException $e) {
             // if there was any other Arsse exception return 500
-            return new EmptyResponse(500);
+            return HTTP::respEmpty(500);
         }
         // @codeCoverageIgnoreEnd
     }
@@ -317,11 +317,11 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
                 return self::CALLS[$url][$method];
             } else {
                 // otherwise return 405
-                return new EmptyResponse(405, ['Allow' => implode(", ", array_keys(self::CALLS[$url]))]);
+                return HTTP::respEmpty(405, ['Allow' => implode(", ", array_keys(self::CALLS[$url]))]);
             }
         } else {
             // if the path is not supported, return 404
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
     }
 
@@ -451,13 +451,13 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
             if (in_array("GET", $allowed)) {
                 array_unshift($allowed, "HEAD");
             }
-            return new EmptyResponse(204, [
+            return HTTP::respEmpty(204, [
                 'Allow'  => implode(", ", $allowed),
                 'Accept' => implode(", ", $url === "/import" ? self::ACCEPTED_TYPES_OPML : self::ACCEPTED_TYPES_JSON),
             ]);
         } else {
             // if the path is not supported, return 404
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
     }
 
@@ -637,7 +637,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionConflict $e) {
             return new ErrorResponse("404", 404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     /** Returns a useful subset of user metadata
@@ -728,7 +728,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             return new ErrorResponse("404", 404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function transformFeed(array $sub, int $uid, string $rootName, \DateTimeZone $tz): array {
@@ -866,7 +866,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
     protected function deleteFeed(array $path): ResponseInterface {
         try {
             Arsse::$db->subscriptionRemove(Arsse::$user->id, (int) $path[1]);
-            return new EmptyResponse(204);
+            return HTTP::respEmpty(204);
         } catch (ExceptionInput $e) {
             return new ErrorResponse("404", 404);
         }
@@ -1104,7 +1104,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
         }
         assert(isset($in), new \Exception("Unknown status specified"));
         Arsse::$db->articleMark(Arsse::$user->id, $in, (new Context)->articles($data['entry_ids']));
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function massRead(Context $c): void {
@@ -1118,7 +1118,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
             return new ErrorResponse("403", 403);
         }
         $this->massRead(new Context);
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function markFeed(array $path): ResponseInterface {
@@ -1127,7 +1127,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             return new ErrorResponse("404", 404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function markCategory(array $path): ResponseInterface {
@@ -1144,7 +1144,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             return new ErrorResponse("404", 404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function toggleEntryBookmark(array $path): ResponseInterface {
@@ -1162,7 +1162,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             return new ErrorResponse("404", 404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function refreshFeed(array $path): ResponseInterface {
@@ -1172,13 +1172,13 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             return new ErrorResponse("404", 404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function refreshAllFeeds(): ResponseInterface {
         // NOTE: This is a no-op
         // It could be implemented, but the need is considered low since we use a dynamic schedule always
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function opmlImport(string $data): ResponseInterface {
diff --git a/lib/REST/NextcloudNews/V1_2.php b/lib/REST/NextcloudNews/V1_2.php
index 7ec195c..205fa73 100644
--- a/lib/REST/NextcloudNews/V1_2.php
+++ b/lib/REST/NextcloudNews/V1_2.php
@@ -18,7 +18,6 @@ use JKingWeb\Arsse\REST\Exception;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse as Response;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
     public const VERSION = "11.0.5";
@@ -86,19 +85,19 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
         if ($req->getAttribute("authenticated", false)) {
             Arsse::$user->id = $req->getAttribute("authenticatedUser");
         } else {
-            return new EmptyResponse(401);
+            return HTTP::respEmpty(401);
         }
         // normalize the input
         $data = (string) $req->getBody();
         if ($data) {
             // if the entity body is not JSON according to content type, return "415 Unsupported Media Type"
             if (!HTTP::matchType($req, "", self::ACCEPTED_TYPE)) {
-                return new EmptyResponse(415, ['Accept' => self::ACCEPTED_TYPE]);
+                return HTTP::respEmpty(415, ['Accept' => self::ACCEPTED_TYPE]);
             }
             $data = @json_decode($data, true);
             if (json_last_error() !== \JSON_ERROR_NONE) {
                 // if the body could not be parsed as JSON, return "400 Bad Request"
-                return new EmptyResponse(400);
+                return HTTP::respEmpty(400);
             }
         } else {
             $data = [];
@@ -117,10 +116,10 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             // @codeCoverageIgnoreStart
         } catch (Exception $e) {
             // if there was a REST exception return 400
-            return new EmptyResponse(400);
+            return HTTP::respEmpty(400);
         } catch (AbstractException $e) {
             // if there was any other Arsse exception return 500
-            return new EmptyResponse(500);
+            return HTTP::respEmpty(500);
         }
         // @codeCoverageIgnoreEnd
     }
@@ -162,11 +161,11 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
                 return $this->paths[$url][$method];
             } else {
                 // otherwise return 405
-                return new EmptyResponse(405, ['Allow' => implode(", ", array_keys($this->paths[$url]))]);
+                return HTTP::respEmpty(405, ['Allow' => implode(", ", array_keys($this->paths[$url]))]);
             }
         } else {
             // if the path is not supported, return 404
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
     }
 
@@ -268,13 +267,13 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             if (in_array("GET", $allowed)) {
                 array_unshift($allowed, "HEAD");
             }
-            return new EmptyResponse(204, [
+            return HTTP::respEmpty(204, [
                 'Allow'  => implode(",", $allowed),
                 'Accept' => self::ACCEPTED_TYPE,
             ]);
         } else {
             // if the path is not supported, return 404
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
     }
 
@@ -294,12 +293,12 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             switch ($e->getCode()) {
                 // folder already exists
-                case 10236: return new EmptyResponse(409);
+                case 10236: return HTTP::respEmpty(409);
                 // folder name not acceptable
                 case 10231:
-                case 10232: return new EmptyResponse(422);
+                case 10232: return HTTP::respEmpty(422);
                 // other errors related to input
-                default: return new EmptyResponse(400); // @codeCoverageIgnore
+                default: return HTTP::respEmpty(400); // @codeCoverageIgnore
             }
         }
         $folder = $this->folderTranslate(Arsse::$db->folderPropertiesGet(Arsse::$user->id, $folder));
@@ -313,9 +312,9 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$db->folderRemove(Arsse::$user->id, (int) $url[1]);
         } catch (ExceptionInput $e) {
             // folder does not exist
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // rename a folder (also supports moving nesting folders, but this is not a feature of the API)
@@ -325,24 +324,24 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             switch ($e->getCode()) {
                 // folder does not exist
-                case 10239: return new EmptyResponse(404);
+                case 10239: return HTTP::respEmpty(404);
                 // folder already exists
-                case 10236: return new EmptyResponse(409);
+                case 10236: return HTTP::respEmpty(409);
                 // folder name not acceptable
                 case 10231:
-                case 10232: return new EmptyResponse(422);
+                case 10232: return HTTP::respEmpty(422);
                 // other errors related to input
-                default: return new EmptyResponse(400); // @codeCoverageIgnore
+                default: return HTTP::respEmpty(400); // @codeCoverageIgnore
             }
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // mark all articles associated with a folder as read
     protected function folderMarkRead(array $url, array $data): ResponseInterface {
         if (!ValueInfo::id($data['newestItemId'])) {
             // if the item ID is invalid (i.e. not a positive integer), this is an error
-            return new EmptyResponse(422);
+            return HTTP::respEmpty(422);
         }
         // build the context
         $c = (new Context)->hidden(false);
@@ -353,15 +352,15 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$db->articleMark(Arsse::$user->id, ['read' => true], $c);
         } catch (ExceptionInput $e) {
             // folder does not exist
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // return list of feeds which should be refreshed
     protected function feedListStale(array $url, array $data): ResponseInterface {
         if (!$this->isAdmin()) {
-            return new EmptyResponse(403);
+            return HTTP::respEmpty(403);
         }
         // list stale feeds which should be checked for updates
         $feeds = Arsse::$db->feedListStale();
@@ -376,21 +375,21 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
     // refresh a feed
     protected function feedUpdate(array $url, array $data): ResponseInterface {
         if (!$this->isAdmin()) {
-            return new EmptyResponse(403);
+            return HTTP::respEmpty(403);
         }
         try {
             Arsse::$db->feedUpdate($data['feedId']);
         } catch (ExceptionInput $e) {
             switch ($e->getCode()) {
                 case 10239: // feed does not exist
-                    return new EmptyResponse(404);
+                    return HTTP::respEmpty(404);
                 case 10237: // feed ID invalid
-                    return new EmptyResponse(422);
+                    return HTTP::respEmpty(422);
                 default: // other errors related to input
-                    return new EmptyResponse(400); // @codeCoverageIgnore
+                    return HTTP::respEmpty(400); // @codeCoverageIgnore
             }
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // add a new feed
@@ -401,10 +400,10 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             $id = Arsse::$db->subscriptionAdd(Arsse::$user->id, (string) $data['url']);
         } catch (ExceptionInput $e) {
             // feed already exists
-            return new EmptyResponse(409);
+            return HTTP::respEmpty(409);
         } catch (FeedException $e) {
             // feed could not be retrieved
-            return new EmptyResponse(422);
+            return HTTP::respEmpty(422);
         }
         // if a folder was specified, move the feed to the correct folder; silently ignore errors
         if ($data['folderId']) {
@@ -447,9 +446,9 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$db->subscriptionRemove(Arsse::$user->id, (int) $url[1]);
         } catch (ExceptionInput $e) {
             // feed does not exist
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // rename a feed
@@ -459,22 +458,22 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             switch ($e->getCode()) {
                 // subscription does not exist
-                case 10239: return new EmptyResponse(404);
+                case 10239: return HTTP::respEmpty(404);
                 // name is invalid
                 case 10231:
-                case 10232: return new EmptyResponse(422);
+                case 10232: return HTTP::respEmpty(422);
                 // other errors related to input
-                default: return new EmptyResponse(400); // @codeCoverageIgnore
+                default: return HTTP::respEmpty(400); // @codeCoverageIgnore
             }
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // move a feed to a folder
     protected function subscriptionMove(array $url, array $data): ResponseInterface {
         // if no folder is specified this is an error
         if (!isset($data['folderId'])) {
-            return new EmptyResponse(422);
+            return HTTP::respEmpty(422);
         }
         // perform the move
         try {
@@ -482,22 +481,22 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
         } catch (ExceptionInput $e) {
             switch ($e->getCode()) {
                 case 10239: // subscription does not exist
-                    return new EmptyResponse(404);
+                    return HTTP::respEmpty(404);
                 case 10235: // folder does not exist
                 case 10237: // folder ID is invalid
-                    return new EmptyResponse(422);
+                    return HTTP::respEmpty(422);
                 default: // other errors related to input
-                    return new EmptyResponse(400); // @codeCoverageIgnore
+                    return HTTP::respEmpty(400); // @codeCoverageIgnore
             }
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // mark all articles associated with a subscription as read
     protected function subscriptionMarkRead(array $url, array $data): ResponseInterface {
         if (!ValueInfo::id($data['newestItemId'])) {
             // if the item ID is invalid (i.e. not a positive integer), this is an error
-            return new EmptyResponse(422);
+            return HTTP::respEmpty(422);
         }
         // build the context
         $c = (new Context)->hidden(false);
@@ -508,9 +507,9 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$db->articleMark(Arsse::$user->id, ['read' => true], $c);
         } catch (ExceptionInput $e) {
             // subscription does not exist
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // list articles and their properties
@@ -579,7 +578,7 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             ], [$reverse ? "edition desc" : "edition"]);
         } catch (ExceptionInput $e) {
             // ID of subscription or folder is not valid
-            return new EmptyResponse(422);
+            return HTTP::respEmpty(422);
         }
         $out = [];
         foreach ($items as $item) {
@@ -593,14 +592,14 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
     protected function articleMarkReadAll(array $url, array $data): ResponseInterface {
         if (!ValueInfo::id($data['newestItemId'])) {
             // if the item ID is invalid (i.e. not a positive integer), this is an error
-            return new EmptyResponse(422);
+            return HTTP::respEmpty(422);
         }
         // build the context
         $c = (new Context)->hidden(false);
         $c->editionRange(null, (int) $data['newestItemId']);
         // perform the operation
         Arsse::$db->articleMark(Arsse::$user->id, ['read' => true], $c);
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // mark a single article as read
@@ -614,9 +613,9 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$db->articleMark(Arsse::$user->id, ['read' => $set], $c);
         } catch (ExceptionInput $e) {
             // ID is not valid
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // mark a single article as read
@@ -630,9 +629,9 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$db->articleMark(Arsse::$user->id, ['starred' => $set], $c);
         } catch (ExceptionInput $e) {
             // ID is not valid
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // mark an array of articles as read
@@ -646,7 +645,7 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$db->articleMark(Arsse::$user->id, ['read' => $set], $c);
         } catch (ExceptionInput $e) {
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // mark an array of articles as starred
@@ -660,7 +659,7 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$db->articleMark(Arsse::$user->id, ['starred' => $set], $c);
         } catch (ExceptionInput $e) {
         }
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function userStatus(array $url, array $data): ResponseInterface {
@@ -674,18 +673,18 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
 
     protected function cleanupBefore(array $url, array $data): ResponseInterface {
         if (!$this->isAdmin()) {
-            return new EmptyResponse(403);
+            return HTTP::respEmpty(403);
         }
         Service::cleanupPre();
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     protected function cleanupAfter(array $url, array $data): ResponseInterface {
         if (!$this->isAdmin()) {
-            return new EmptyResponse(403);
+            return HTTP::respEmpty(403);
         }
         Service::cleanupPost();
-        return new EmptyResponse(204);
+        return HTTP::respEmpty(204);
     }
 
     // return the server version
diff --git a/lib/REST/NextcloudNews/Versions.php b/lib/REST/NextcloudNews/Versions.php
index 95ee0bf..503fef1 100644
--- a/lib/REST/NextcloudNews/Versions.php
+++ b/lib/REST/NextcloudNews/Versions.php
@@ -6,10 +6,10 @@
 declare(strict_types=1);
 namespace JKingWeb\Arsse\REST\NextcloudNews;
 
+use JKingWeb\Arsse\Misc\HTTP;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse as Response;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 class Versions implements \JKingWeb\Arsse\REST\Handler {
     public function __construct() {
@@ -18,12 +18,12 @@ class Versions implements \JKingWeb\Arsse\REST\Handler {
     public function dispatch(ServerRequestInterface $req): ResponseInterface {
         if (!preg_match("<^/?$>D", $req->getRequestTarget())) {
             // if the request path is more than an empty string or a slash, the client is probably trying a version we don't support
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
         switch ($req->getMethod()) {
             case "OPTIONS":
                 // if the request method is OPTIONS, respond accordingly
-                return new EmptyResponse(204, ['Allow' => "HEAD,GET"]);
+                return HTTP::respEmpty(204, ['Allow' => "HEAD,GET"]);
             case "GET":
                 // otherwise return the supported versions
                 $out = [
@@ -34,7 +34,7 @@ class Versions implements \JKingWeb\Arsse\REST\Handler {
                 return new Response($out);
             default:
                 // if any other method was used, this is an error
-                return new EmptyResponse(405, ['Allow' => "HEAD,GET"]);
+                return HTTP::respEmpty(405, ['Allow' => "HEAD,GET"]);
         }
     }
 }
diff --git a/lib/REST/TinyTinyRSS/API.php b/lib/REST/TinyTinyRSS/API.php
index e167fa4..d8fb5ca 100644
--- a/lib/REST/TinyTinyRSS/API.php
+++ b/lib/REST/TinyTinyRSS/API.php
@@ -12,6 +12,7 @@ use JKingWeb\Arsse\Service;
 use JKingWeb\Arsse\Database;
 use JKingWeb\Arsse\Context\Context;
 use JKingWeb\Arsse\Misc\Date;
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\Misc\ValueInfo as V;
 use JKingWeb\Arsse\AbstractException;
 use JKingWeb\Arsse\ExceptionType;
@@ -21,7 +22,6 @@ use JKingWeb\Arsse\Feed\Exception as FeedException;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse as Response;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 class API extends \JKingWeb\Arsse\REST\AbstractHandler {
     public const LEVEL = 15;           // emulated API level
@@ -96,11 +96,11 @@ class API extends \JKingWeb\Arsse\REST\AbstractHandler {
     public function dispatch(ServerRequestInterface $req): ResponseInterface {
         if (!preg_match("<^(?:/(?:index\.php)?)?$>D", $req->getRequestTarget())) {
             // reject paths other than the index
-            return new EmptyResponse(404);
+            return HTTP::respEmpty(404);
         }
         if ($req->getMethod() === "OPTIONS") {
             // respond to OPTIONS rquests; the response is a fib, as we technically accept any type or method
-            return new EmptyResponse(204, [
+            return HTTP::respEmpty(204, [
                 'Allow'  => "POST",
                 'Accept' => implode(", ", self::ACCEPTED_TYPES),
             ]);
@@ -125,7 +125,7 @@ class API extends \JKingWeb\Arsse\REST\AbstractHandler {
                     Arsse::$user->id = $req->getAttribute("authenticatedUser");
                 } elseif (Arsse::$conf->userHTTPAuthRequired || Arsse::$conf->userPreAuth || $req->getAttribute("authenticationFailed", false)) {
                     // otherwise if HTTP authentication failed or is required, deny access at the HTTP level
-                    return new EmptyResponse(401);
+                    return HTTP::respEmpty(401);
                 }
                 if (strtolower((string) $data['op']) !== "login") {
                     // unless logging in, a session identifier is required
@@ -148,7 +148,7 @@ class API extends \JKingWeb\Arsse\REST\AbstractHandler {
                     'content' => $e->getData(),
                 ]);
             } catch (AbstractException $e) {
-                return new EmptyResponse(500);
+                return HTTP::respEmpty(500);
             }
         } else {
             // absence of a request body indicates an error
diff --git a/lib/REST/TinyTinyRSS/Icon.php b/lib/REST/TinyTinyRSS/Icon.php
index dd718bc..37f2ce8 100644
--- a/lib/REST/TinyTinyRSS/Icon.php
+++ b/lib/REST/TinyTinyRSS/Icon.php
@@ -7,10 +7,10 @@ declare(strict_types=1);
 namespace JKingWeb\Arsse\REST\TinyTinyRSS;
 
 use JKingWeb\Arsse\Arsse;
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\Db\ExceptionInput;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Laminas\Diactoros\Response\EmptyResponse as Response;
 
 class Icon extends \JKingWeb\Arsse\REST\AbstractHandler {
     public function __construct() {
@@ -22,25 +22,25 @@ class Icon extends \JKingWeb\Arsse\REST\AbstractHandler {
             Arsse::$user->id = $req->getAttribute("authenticatedUser");
         } elseif ($req->getAttribute("authenticationFailed", false) || Arsse::$conf->userHTTPAuthRequired) {
             // otherwise if HTTP authentication failed or did not occur when it is required, deny access at the HTTP level
-            return new Response(401);
+            return HTTP::respEmpty(401);
         }
         if ($req->getMethod() !== "GET") {
             // only GET requests are allowed
-            return new Response(405, ['Allow' => "GET"]);
+            return HTTP::respEmpty(405, ['Allow' => "GET"]);
         } elseif (!preg_match("<^(\d+)\.ico$>D", $req->getRequestTarget(), $match) || !((int) $match[1])) {
-            return new Response(404);
+            return HTTP::respEmpty(404);
         }
         try {
             $url = Arsse::$db->subscriptionIcon(Arsse::$user->id ?? null, (int) $match[1], false)['url'] ?? null;
             if (!$url) {
-                return new Response(404);
+                return HTTP::respEmpty(404);
             }
             if (($pos = strpos($url, "\r")) !== false || ($pos = strpos($url, "\n")) !== false) {
                 $url = substr($url, 0, $pos);
             }
-            return new Response(301, ['Location' => $url]);
+            return HTTP::respEmpty(301, ['Location' => $url]);
         } catch (ExceptionInput $e) {
-            return new Response(404);
+            return HTTP::respEmpty(404);
         }
     }
 }
diff --git a/tests/cases/REST/Fever/TestAPI.php b/tests/cases/REST/Fever/TestAPI.php
index 6a618b6..59d1858 100644
--- a/tests/cases/REST/Fever/TestAPI.php
+++ b/tests/cases/REST/Fever/TestAPI.php
@@ -9,6 +9,7 @@ namespace JKingWeb\Arsse\TestCase\REST\Fever;
 use JKingWeb\Arsse\Arsse;
 use JKingWeb\Arsse\User;
 use JKingWeb\Arsse\Database;
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\Test\Result;
 use JKingWeb\Arsse\Context\Context;
 use JKingWeb\Arsse\Db\ExceptionInput;
@@ -17,7 +18,6 @@ use JKingWeb\Arsse\REST\Fever\API;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse;
 use Laminas\Diactoros\Response\XmlResponse;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST\Fever\API<extended> */
 class TestAPI extends \JKingWeb\Arsse\Test\AbstractTest {
@@ -194,7 +194,7 @@ class TestAPI extends \JKingWeb\Arsse\Test\AbstractTest {
     public function provideTokenAuthenticationRequests(): iterable {
         $success = new JsonResponse(['auth' => 1]);
         $failure = new JsonResponse(['auth' => 0]);
-        $denied = new EmptyResponse(401);
+        $denied = HTTP::respEmpty(401);
         return [
             [false, true,  null, [], ['api' => null], $failure],
             [false, false, null, [], ['api' => null], $failure],
@@ -421,8 +421,8 @@ class TestAPI extends \JKingWeb\Arsse\Test\AbstractTest {
 
     public function provideInvalidRequests(): iterable {
         return [
-            'Not an API request'        => ["",    "",                         "POST", null,                                                                                                new EmptyResponse(404)],
-            'Wrong method'              => ["api", "",                         "PUT",  null,                                                                                                new EmptyResponse(405, ['Allow' => "OPTIONS,POST"])],
+            'Not an API request'        => ["",    "",                         "POST", null,                                                                                                HTTP::respEmpty(404)],
+            'Wrong method'              => ["api", "",                         "PUT",  null,                                                                                                HTTP::respEmpty(405, ['Allow' => "OPTIONS,POST"])],
             'Non-standard method'       => ["api", "",                         "GET",  null,                                                                                                new JsonResponse([])],
             'Wrong content type'        => ["api", '{"api_key":"validToken"}', "POST", "application/json",                                                                                  new JsonResponse([])], // some clients send nonsensical content types; Fever seems to have allowed this
             'Non-standard content type' => ["api", '{"api_key":"validToken"}', "POST", "multipart/form-data; boundary=33b68964f0de4c1f-5144aa6caaa6e4a8-18bfaf416a1786c8-5c5053a45f221bc1", new JsonResponse([])], // some clients send nonsensical content types; Fever seems to have allowed this
@@ -494,7 +494,7 @@ class TestAPI extends \JKingWeb\Arsse\Test\AbstractTest {
     }
 
     public function testAnswerOptionsRequest(): void {
-        $exp = new EmptyResponse(204, [
+        $exp = HTTP::respEmpty(204, [
             'Allow'  => "POST",
             'Accept' => "application/x-www-form-urlencoded, multipart/form-data",
         ]);
diff --git a/tests/cases/REST/Miniflux/TestStatus.php b/tests/cases/REST/Miniflux/TestStatus.php
index bcf81d1..cf573e3 100644
--- a/tests/cases/REST/Miniflux/TestStatus.php
+++ b/tests/cases/REST/Miniflux/TestStatus.php
@@ -6,10 +6,10 @@
 declare(strict_types=1);
 namespace JKingWeb\Arsse\TestCase\REST\Miniflux;
 
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\REST\Miniflux\Status;
 use JKingWeb\Arsse\REST\Miniflux\V1;
 use Psr\Http\Message\ResponseInterface;
-use Laminas\Diactoros\Response\EmptyResponse;
 use Laminas\Diactoros\Response\TextResponse;
 
 /** @covers \JKingWeb\Arsse\REST\Miniflux\Status */
@@ -23,12 +23,12 @@ class TestStatus extends \JKingWeb\Arsse\Test\AbstractTest {
     public function provideRequests(): iterable {
         return [
             ["/version",     "GET",     new TextResponse(V1::VERSION)],
-            ["/version",     "POST",    new EmptyResponse(405, ['Allow' => "HEAD, GET"])],
-            ["/version",     "OPTIONS", new EmptyResponse(204, ['Allow' => "HEAD, GET"])],
+            ["/version",     "POST",    HTTP::respEmpty(405, ['Allow' => "HEAD, GET"])],
+            ["/version",     "OPTIONS", HTTP::respEmpty(204, ['Allow' => "HEAD, GET"])],
             ["/healthcheck", "GET",     new TextResponse("OK")],
-            ["/healthcheck", "POST",    new EmptyResponse(405, ['Allow' => "HEAD, GET"])],
-            ["/healthcheck", "OPTIONS", new EmptyResponse(204, ['Allow' => "HEAD, GET"])],
-            ["/version/",     "GET",    new EmptyResponse(404)],
+            ["/healthcheck", "POST",    HTTP::respEmpty(405, ['Allow' => "HEAD, GET"])],
+            ["/healthcheck", "OPTIONS", HTTP::respEmpty(204, ['Allow' => "HEAD, GET"])],
+            ["/version/",     "GET",    HTTP::respEmpty(404)],
         ];
     }
 }
diff --git a/tests/cases/REST/Miniflux/TestV1.php b/tests/cases/REST/Miniflux/TestV1.php
index 9623fd3..8961047 100644
--- a/tests/cases/REST/Miniflux/TestV1.php
+++ b/tests/cases/REST/Miniflux/TestV1.php
@@ -14,6 +14,7 @@ use JKingWeb\Arsse\Context\RootContext;
 use JKingWeb\Arsse\Context\UnionContext;
 use JKingWeb\Arsse\User;
 use JKingWeb\Arsse\Database;
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\Db\Transaction;
 use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\REST\Miniflux\V1;
@@ -26,7 +27,6 @@ use JKingWeb\Arsse\User\ExceptionInput as UserExceptionInput;
 use JKingWeb\Arsse\Test\Result;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse as Response;
-use Laminas\Diactoros\Response\EmptyResponse;
 use Laminas\Diactoros\Response\TextResponse;
 
 /** @covers \JKingWeb\Arsse\REST\Miniflux\V1<extended> */
@@ -102,7 +102,7 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     /** @dataProvider provideAuthResponses */
     public function testAuthenticateAUser($token, bool $auth, bool $success): void {
-        $exp = $success ? new EmptyResponse(404) : new ErrorResponse("401", 401);
+        $exp = $success ? HTTP::respEmpty(404) : new ErrorResponse("401", 401);
         $user = "john.doe@example.com";
         if ($token !== null) {
             $headers = ['X-Auth-Token' => $token];
@@ -133,7 +133,7 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     /** @dataProvider provideInvalidPaths */
     public function testRespondToInvalidPaths($path, $method, $code, $allow = null): void {
-        $exp = new EmptyResponse($code, $allow ? ['Allow' => $allow] : []);
+        $exp = HTTP::respEmpty($code, $allow ? ['Allow' => $allow] : []);
         $this->assertMessage($exp, $this->req($method, $path));
     }
 
@@ -148,7 +148,7 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     /** @dataProvider provideOptionsRequests */
     public function testRespondToOptionsRequests(string $url, string $allow, string $accept): void {
-        $exp = new EmptyResponse(204, [
+        $exp = HTTP::respEmpty(204, [
             'Allow'  => $allow,
             'Accept' => $accept,
         ]);
@@ -382,7 +382,7 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
         Arsse::$user->method("remove")->willReturn(true);
         Arsse::$user->expects($this->exactly(1))->method("lookup")->with(2112);
         Arsse::$user->expects($this->exactly(1))->method("remove")->with("john.doe@example.com");
-        $this->assertMessage(new EmptyResponse(204), $this->req("DELETE", "/users/2112"));
+        $this->assertMessage(HTTP::respEmpty(204), $this->req("DELETE", "/users/2112"));
     }
 
     public function testDeleteAMissingUser(): void {
@@ -484,7 +484,7 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     public function testDeleteARealCategory(): void {
         $this->dbMock->folderRemove->returns(true)->throws(new ExceptionInput("subjectMissing"));
-        $this->assertMessage(new EmptyResponse(204), $this->req("DELETE", "/categories/2112"));
+        $this->assertMessage(HTTP::respEmpty(204), $this->req("DELETE", "/categories/2112"));
         $this->dbMock->folderRemove->calledWith("john.doe@example.com", 2111);
         $this->assertMessage(new ErrorResponse("404", 404), $this->req("DELETE", "/categories/47"));
         $this->dbMock->folderRemove->calledWith("john.doe@example.com", 46);
@@ -497,7 +497,7 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
             ['id' => 2112],
         ])));
         $this->dbMock->subscriptionRemove->returns(true);
-        $this->assertMessage(new EmptyResponse(204), $this->req("DELETE", "/categories/1"));
+        $this->assertMessage(HTTP::respEmpty(204), $this->req("DELETE", "/categories/1"));
         Phony::inOrder(
             $this->dbMock->begin->calledWith(),
             $this->dbMock->subscriptionList->calledWith("john.doe@example.com", null, false),
@@ -680,7 +680,7 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     public function testDeleteAFeed(): void {
         $this->dbMock->subscriptionRemove->returns(true);
-        $this->assertMessage(new EmptyResponse(204), $this->req("DELETE", "/feeds/2112"));
+        $this->assertMessage(HTTP::respEmpty(204), $this->req("DELETE", "/feeds/2112"));
         $this->dbMock->subscriptionRemove->calledWith(Arsse::$user->id, 2112);
     }
 
@@ -864,9 +864,9 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
             [['entry_ids' => [1], 'status' => 1],            null,                                 new ErrorResponse(["InvalidInputType", 'field' => "status", 'expected' => "string", 'actual' => "integer"], 422)],
             [['entry_ids' => [0], 'status' => "read"],       null,                                 new ErrorResponse(["InvalidInputValue", 'field' => "entry_ids"], 422)],
             [['entry_ids' => [1], 'status' => "reread"],     null,                                 new ErrorResponse(["InvalidInputValue", 'field' => "status"], 422)],
-            [['entry_ids' => [1, 2], 'status' => "read"],    ['read' => true,  'hidden' => false], new EmptyResponse(204)],
-            [['entry_ids' => [1, 2], 'status' => "unread"],  ['read' => false, 'hidden' => false], new EmptyResponse(204)],
-            [['entry_ids' => [1, 2], 'status' => "removed"], ['read' => true,  'hidden' => true],  new EmptyResponse(204)],
+            [['entry_ids' => [1, 2], 'status' => "read"],    ['read' => true,  'hidden' => false], HTTP::respEmpty(204)],
+            [['entry_ids' => [1, 2], 'status' => "unread"],  ['read' => false, 'hidden' => false], HTTP::respEmpty(204)],
+            [['entry_ids' => [1, 2], 'status' => "removed"], ['read' => true,  'hidden' => true],  HTTP::respEmpty(204)],
         ];
     }
 
@@ -889,13 +889,13 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
         self::clearData();
         $c = (new Context)->hidden(false);
         return [
-            ["/users/42/mark-all-as-read",        $c,                             1123,                            new EmptyResponse(204)],
+            ["/users/42/mark-all-as-read",        $c,                             1123,                            HTTP::respEmpty(204)],
             ["/users/2112/mark-all-as-read",      $c,                             null,                            new ErrorResponse("403", 403)],
-            ["/feeds/47/mark-all-as-read",        (clone $c)->subscription(47),   2112,                            new EmptyResponse(204)],
+            ["/feeds/47/mark-all-as-read",        (clone $c)->subscription(47),   2112,                            HTTP::respEmpty(204)],
             ["/feeds/2112/mark-all-as-read",      (clone $c)->subscription(2112), new ExceptionInput("idMissing"), new ErrorResponse("404", 404)],
-            ["/categories/47/mark-all-as-read",   (clone $c)->folder(46),         1337,                            new EmptyResponse(204)],
+            ["/categories/47/mark-all-as-read",   (clone $c)->folder(46),         1337,                            HTTP::respEmpty(204)],
             ["/categories/2112/mark-all-as-read", (clone $c)->folder(2111),       new ExceptionInput("idMissing"), new ErrorResponse("404", 404)],
-            ["/categories/1/mark-all-as-read",    (clone $c)->folderShallow(0),   6666,                            new EmptyResponse(204)],
+            ["/categories/1/mark-all-as-read",    (clone $c)->folderShallow(0),   6666,                            HTTP::respEmpty(204)],
         ];
     }
 
@@ -929,15 +929,15 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
     public function provideBookmarkTogglings(): iterable {
         self::clearData();
         return [
-            [1,                                    true,  new EmptyResponse(204)],
-            [0,                                    false, new EmptyResponse(204)],
+            [1,                                    true,  HTTP::respEmpty(204)],
+            [0,                                    false, HTTP::respEmpty(204)],
             [new ExceptionInput("subjectMissing"), null,  new ErrorResponse("404", 404)],
         ];
     }
 
     public function testRefreshAFeed(): void {
         $this->dbMock->subscriptionPropertiesGet->returns([]);
-        $this->assertMessage(new EmptyResponse(204), $this->req("PUT", "/feeds/47/refresh"));
+        $this->assertMessage(HTTP::respEmpty(204), $this->req("PUT", "/feeds/47/refresh"));
         $this->dbMock->subscriptionPropertiesGet->calledWith(Arsse::$user->id, 47);
     }
 
@@ -948,7 +948,7 @@ class TestV1 extends \JKingWeb\Arsse\Test\AbstractTest {
     }
 
     public function testRefreshAllFeeds(): void {
-        $this->assertMessage(new EmptyResponse(204), $this->req("PUT", "/feeds/refresh"));
+        $this->assertMessage(HTTP::respEmpty(204), $this->req("PUT", "/feeds/refresh"));
     }
 
     /** @dataProvider provideImports */
diff --git a/tests/cases/REST/NextcloudNews/TestV1_2.php b/tests/cases/REST/NextcloudNews/TestV1_2.php
index f58f87d..08f1f70 100644
--- a/tests/cases/REST/NextcloudNews/TestV1_2.php
+++ b/tests/cases/REST/NextcloudNews/TestV1_2.php
@@ -11,13 +11,13 @@ use JKingWeb\Arsse\User;
 use JKingWeb\Arsse\Database;
 use JKingWeb\Arsse\Test\Result;
 use JKingWeb\Arsse\Misc\Date;
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\Context\Context;
 use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\Db\Transaction;
 use JKingWeb\Arsse\REST\NextcloudNews\V1_2;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse as Response;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST\NextcloudNews\V1_2<extended> */
 class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
@@ -336,13 +336,13 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
     }
 
     public function testSendAuthenticationChallenge(): void {
-        $exp = new EmptyResponse(401);
+        $exp = HTTP::respEmpty(401);
         $this->assertMessage($exp, $this->req("GET", "/", "", [], false));
     }
 
     /** @dataProvider provideInvalidPaths */
     public function testRespondToInvalidPaths($path, $method, $code, $allow = null): void {
-        $exp = new EmptyResponse($code, $allow ? ['Allow' => $allow] : []);
+        $exp = HTTP::respEmpty($code, $allow ? ['Allow' => $allow] : []);
         $this->assertMessage($exp, $this->req($method, $path));
     }
 
@@ -374,16 +374,16 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
     }
 
     public function testRespondToInvalidInputTypes(): void {
-        $exp = new EmptyResponse(415, ['Accept' => "application/json"]);
+        $exp = HTTP::respEmpty(415, ['Accept' => "application/json"]);
         $this->assertMessage($exp, $this->req("PUT", "/folders/1", '<data/>', ['Content-Type' => "application/xml"]));
-        $exp = new EmptyResponse(400);
+        $exp = HTTP::respEmpty(400);
         $this->assertMessage($exp, $this->req("PUT", "/folders/1", '<data/>'));
         $this->assertMessage($exp, $this->req("PUT", "/folders/1", '<data/>', ['Content-Type' => null]));
     }
 
     /** @dataProvider provideOptionsRequests */
     public function testRespondToOptionsRequests(string $url, string $allow, string $accept): void {
-        $exp = new EmptyResponse(204, [
+        $exp = HTTP::respEmpty(204, [
             'Allow'  => $allow,
             'Accept' => $accept,
         ]);
@@ -436,19 +436,19 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
             [['name' => "Software"], false, 1,                                         new Response(['folders' => [['id' => 1, 'name' => "Software"]]])],
             [['name' => "Hardware"], true,  "2",                                       new Response(['folders' => [['id' => 2, 'name' => "Hardware"]]])],
             [['name' => "Hardware"], false, "2",                                       new Response(['folders' => [['id' => 2, 'name' => "Hardware"]]])],
-            [['name' => "Software"], true,  new ExceptionInput("constraintViolation"), new EmptyResponse(409)],
-            [['name' => ""],         true,  new ExceptionInput("whitespace"),          new EmptyResponse(422)],
-            [['name' => " "],        true,  new ExceptionInput("whitespace"),          new EmptyResponse(422)],
-            [['name' => null],       true,  new ExceptionInput("missing"),             new EmptyResponse(422)],
+            [['name' => "Software"], true,  new ExceptionInput("constraintViolation"), HTTP::respEmpty(409)],
+            [['name' => ""],         true,  new ExceptionInput("whitespace"),          HTTP::respEmpty(422)],
+            [['name' => " "],        true,  new ExceptionInput("whitespace"),          HTTP::respEmpty(422)],
+            [['name' => null],       true,  new ExceptionInput("missing"),             HTTP::respEmpty(422)],
         ];
     }
 
     public function testRemoveAFolder(): void {
         $this->dbMock->folderRemove->with($this->userId, 1)->returns(true)->throws(new ExceptionInput("subjectMissing"));
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("DELETE", "/folders/1"));
         // fail on the second invocation because it no longer exists
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("DELETE", "/folders/1"));
         $this->dbMock->folderRemove->times(2)->calledWith($this->userId, 1);
     }
@@ -467,12 +467,12 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     public function provideFolderRenamings(): array {
         return [
-            [['name' => "Software"], 1, true,                                      new EmptyResponse(204)],
-            [['name' => "Software"], 2, new ExceptionInput("constraintViolation"), new EmptyResponse(409)],
-            [['name' => "Software"], 3, new ExceptionInput("subjectMissing"),      new EmptyResponse(404)],
-            [['name' => ""],         2, new ExceptionInput("whitespace"),          new EmptyResponse(422)],
-            [['name' => " "],        2, new ExceptionInput("whitespace"),          new EmptyResponse(422)],
-            [['name' => null],       2, new ExceptionInput("missing"),             new EmptyResponse(422)],
+            [['name' => "Software"], 1, true,                                      HTTP::respEmpty(204)],
+            [['name' => "Software"], 2, new ExceptionInput("constraintViolation"), HTTP::respEmpty(409)],
+            [['name' => "Software"], 3, new ExceptionInput("subjectMissing"),      HTTP::respEmpty(404)],
+            [['name' => ""],         2, new ExceptionInput("whitespace"),          HTTP::respEmpty(422)],
+            [['name' => " "],        2, new ExceptionInput("whitespace"),          HTTP::respEmpty(422)],
+            [['name' => null],       2, new ExceptionInput("missing"),             HTTP::respEmpty(422)],
         ];
     }
 
@@ -540,19 +540,19 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         return [
             [['url' => "http://example.com/news.atom", 'folderId' => 3],  2112,                                      0,       $this->feeds['db'][0], new ExceptionInput("idMissing"),     new Response(['feeds' => [$this->feeds['rest'][0]]])],
             [['url' => "http://example.org/news.atom", 'folderId' => 8],  42,                                        4758915, $this->feeds['db'][1], true,                                new Response(['feeds' => [$this->feeds['rest'][1]], 'newestItemId' => 4758915])],
-            [['url' => "http://example.com/news.atom", 'folderId' => 3],  new ExceptionInput("constraintViolation"), 0,       $this->feeds['db'][0], new ExceptionInput("idMissing"),     new EmptyResponse(409)],
-            [['url' => "http://example.org/news.atom", 'folderId' => 8],  new ExceptionInput("constraintViolation"), 4758915, $this->feeds['db'][1], true,                                new EmptyResponse(409)],
-            [[],                                                          $feedException,                            0,       [],                    false,                               new EmptyResponse(422)],
+            [['url' => "http://example.com/news.atom", 'folderId' => 3],  new ExceptionInput("constraintViolation"), 0,       $this->feeds['db'][0], new ExceptionInput("idMissing"),     HTTP::respEmpty(409)],
+            [['url' => "http://example.org/news.atom", 'folderId' => 8],  new ExceptionInput("constraintViolation"), 4758915, $this->feeds['db'][1], true,                                HTTP::respEmpty(409)],
+            [[],                                                          $feedException,                            0,       [],                    false,                               HTTP::respEmpty(422)],
             [['url' => "http://example.net/news.atom", 'folderId' => -1], 47,                                        2112,    $this->feeds['db'][2], new ExceptionInput("typeViolation"), new Response(['feeds' => [$this->feeds['rest'][2]], 'newestItemId' => 2112])],
         ];
     }
 
     public function testRemoveASubscription(): void {
         $this->dbMock->subscriptionRemove->with($this->userId, 1)->returns(true)->throws(new ExceptionInput("subjectMissing"));
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("DELETE", "/feeds/1"));
         // fail on the second invocation because it no longer exists
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("DELETE", "/feeds/1"));
         $this->dbMock->subscriptionRemove->times(2)->calledWith($this->userId, 1);
     }
@@ -571,17 +571,17 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $this->dbMock->subscriptionPropertiesSet->with($this->userId, 1, ['folder' => 2112])->throws(new ExceptionInput("idMissing")); // folder does not exist
         $this->dbMock->subscriptionPropertiesSet->with($this->userId, 1, ['folder' =>   -1])->throws(new ExceptionInput("typeViolation")); // folder is invalid
         $this->dbMock->subscriptionPropertiesSet->with($this->userId, 42, $this->anything())->throws(new ExceptionInput("subjectMissing")); // subscription does not exist
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/move", json_encode($in[0])));
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/move", json_encode($in[1])));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/move", json_encode($in[2])));
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/42/move", json_encode($in[3])));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/move", json_encode($in[4])));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/move", json_encode($in[5])));
     }
 
@@ -601,17 +601,17 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $this->dbMock->subscriptionPropertiesSet->with($this->userId, 1, $this->identicalTo(['title' =>    ""]))->throws(new ExceptionInput("missing"));
         $this->dbMock->subscriptionPropertiesSet->with($this->userId, 1, $this->identicalTo(['title' => false]))->throws(new ExceptionInput("missing"));
         $this->dbMock->subscriptionPropertiesSet->with($this->userId, 42, $this->anything())->throws(new ExceptionInput("subjectMissing"));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/rename", json_encode($in[0])));
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/rename", json_encode($in[1])));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/rename", json_encode($in[2])));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/rename", json_encode($in[3])));
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/42/rename", json_encode($in[4])));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/rename", json_encode($in[6])));
     }
 
@@ -633,7 +633,7 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     public function testListStaleFeedsWithoutAuthority(): void {
         $this->userMock->propertiesGet->returns(['admin' => false]);
-        $exp = new EmptyResponse(403);
+        $exp = HTTP::respEmpty(403);
         $this->assertMessage($exp, $this->req("GET", "/feeds/all"));
         $this->dbMock->feedListStale->never()->called();
     }
@@ -649,11 +649,11 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $this->dbMock->feedUpdate->with(42)->returns(true);
         $this->dbMock->feedUpdate->with(2112)->throws(new ExceptionInput("subjectMissing"));
         $this->dbMock->feedUpdate->with($this->lessThan(1))->throws(new ExceptionInput("typeViolation"));
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("GET", "/feeds/update", json_encode($in[0])));
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("GET", "/feeds/update", json_encode($in[1])));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("GET", "/feeds/update", json_encode($in[2])));
         $this->assertMessage($exp, $this->req("GET", "/feeds/update", json_encode($in[3])));
         $this->assertMessage($exp, $this->req("GET", "/feeds/update", json_encode($in[4])));
@@ -661,7 +661,7 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     public function testUpdateAFeedWithoutAuthority(): void {
         $this->userMock->propertiesGet->returns(['admin' => false]);
-        $exp = new EmptyResponse(403);
+        $exp = HTTP::respEmpty(403);
         $this->assertMessage($exp, $this->req("GET", "/feeds/update", ['feedId' => 42]));
         $this->dbMock->feedUpdate->never()->called();
     }
@@ -684,7 +684,7 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $t = Date::normalize(time());
         $out = new Result($this->v($this->articles['db']));
         $r200 = new Response(['items' => $this->articles['rest']]);
-        $r422 = new EmptyResponse(422);
+        $r422 = HTTP::respEmpty(422);
         return [
             ["/items",         [],                                                         clone $c,                                     $out,                                $r200],
             ["/items",         ['type' => 0, 'id' => 42],                                  (clone $c)->subscription(42),                 new ExceptionInput("idMissing"),     $r422],
@@ -720,13 +720,13 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $in = json_encode(['newestItemId' => 2112]);
         $this->dbMock->articleMark->with($this->userId, $read, $this->equalTo((new Context)->folder(1)->editionRange(null, 2112)->hidden(false)))->returns(42);
         $this->dbMock->articleMark->with($this->userId, $read, $this->equalTo((new Context)->folder(42)->editionRange(null, 2112)->hidden(false)))->throws(new ExceptionInput("idMissing")); // folder doesn't exist
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("PUT", "/folders/1/read", $in));
         $this->assertMessage($exp, $this->req("PUT", "/folders/1/read?newestItemId=2112"));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/folders/1/read"));
         $this->assertMessage($exp, $this->req("PUT", "/folders/1/read?newestItemId=ook"));
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("PUT", "/folders/42/read", $in));
     }
 
@@ -735,13 +735,13 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $in = json_encode(['newestItemId' => 2112]);
         $this->dbMock->articleMark->with($this->userId, $read, $this->equalTo((new Context)->subscription(1)->editionRange(null, 2112)->hidden(false)))->returns(42);
         $this->dbMock->articleMark->with($this->userId, $read, $this->equalTo((new Context)->subscription(42)->editionRange(null, 2112)->hidden(false)))->throws(new ExceptionInput("idMissing")); // subscription doesn't exist
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/read", $in));
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/read?newestItemId=2112"));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/read"));
         $this->assertMessage($exp, $this->req("PUT", "/feeds/1/read?newestItemId=ook"));
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("PUT", "/feeds/42/read", $in));
     }
 
@@ -749,10 +749,10 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $read = ['read' => true];
         $in = json_encode(['newestItemId' => 2112]);
         $this->dbMock->articleMark->with($this->userId, $read, $this->equalTo((new Context)->editionRange(null, 2112)))->returns(42);
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("PUT", "/items/read", $in));
         $this->assertMessage($exp, $this->req("PUT", "/items/read?newestItemId=2112"));
-        $exp = new EmptyResponse(422);
+        $exp = HTTP::respEmpty(422);
         $this->assertMessage($exp, $this->req("PUT", "/items/read"));
         $this->assertMessage($exp, $this->req("PUT", "/items/read?newestItemId=ook"));
     }
@@ -770,12 +770,12 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $this->dbMock->articleMark->with($this->userId, $star, $this->equalTo((new Context)->article(2112)))->throws(new ExceptionInput("subjectMissing")); // article doesn't exist doesn't exist
         $this->dbMock->articleMark->with($this->userId, $unstar, $this->equalTo((new Context)->article(4)))->returns(42);
         $this->dbMock->articleMark->with($this->userId, $unstar, $this->equalTo((new Context)->article(1337)))->throws(new ExceptionInput("subjectMissing")); // article doesn't exist doesn't exist
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("PUT", "/items/1/read"));
         $this->assertMessage($exp, $this->req("PUT", "/items/2/unread"));
         $this->assertMessage($exp, $this->req("PUT", "/items/1/3/star"));
         $this->assertMessage($exp, $this->req("PUT", "/items/4400/4/unstar"));
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("PUT", "/items/42/read"));
         $this->assertMessage($exp, $this->req("PUT", "/items/47/unread"));
         $this->assertMessage($exp, $this->req("PUT", "/items/1/2112/star"));
@@ -801,7 +801,7 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
         $this->dbMock->articleMark->with($this->userId, $this->anything(), $this->anything())->returns(42);
         $this->dbMock->articleMark->with($this->userId, $this->anything(), $this->equalTo((new Context)->editions([])))->throws(new ExceptionInput("tooShort")); // data model function requires one valid integer for multiples
         $this->dbMock->articleMark->with($this->userId, $this->anything(), $this->equalTo((new Context)->articles([])))->throws(new ExceptionInput("tooShort")); // data model function requires one valid integer for multiples
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("PUT", "/items/read/multiple"));
         $this->assertMessage($exp, $this->req("PUT", "/items/unread/multiple"));
         $this->assertMessage($exp, $this->req("PUT", "/items/star/multiple"));
@@ -860,28 +860,28 @@ class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
 
     public function testCleanUpBeforeUpdate(): void {
         $this->dbMock->feedCleanup->with()->returns(true);
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("GET", "/cleanup/before-update"));
         $this->dbMock->feedCleanup->calledWith();
     }
 
     public function testCleanUpBeforeUpdateWithoutAuthority(): void {
         $this->userMock->propertiesGet->returns(['admin' => false]);
-        $exp = new EmptyResponse(403);
+        $exp = HTTP::respEmpty(403);
         $this->assertMessage($exp, $this->req("GET", "/cleanup/before-update"));
         $this->dbMock->feedCleanup->never()->called();
     }
 
     public function testCleanUpAfterUpdate(): void {
         $this->dbMock->articleCleanup->with()->returns(true);
-        $exp = new EmptyResponse(204);
+        $exp = HTTP::respEmpty(204);
         $this->assertMessage($exp, $this->req("GET", "/cleanup/after-update"));
         $this->dbMock->articleCleanup->calledWith();
     }
 
     public function testCleanUpAfterUpdateWithoutAuthority(): void {
         $this->userMock->propertiesGet->returns(['admin' => false]);
-        $exp = new EmptyResponse(403);
+        $exp = HTTP::respEmpty(403);
         $this->assertMessage($exp, $this->req("GET", "/cleanup/after-update"));
         $this->dbMock->feedCleanup->never()->called();
     }
diff --git a/tests/cases/REST/NextcloudNews/TestVersions.php b/tests/cases/REST/NextcloudNews/TestVersions.php
index b5d5679..a254772 100644
--- a/tests/cases/REST/NextcloudNews/TestVersions.php
+++ b/tests/cases/REST/NextcloudNews/TestVersions.php
@@ -6,10 +6,10 @@
 declare(strict_types=1);
 namespace JKingWeb\Arsse\TestCase\REST\NextcloudNews;
 
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\REST\NextcloudNews\Versions;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse as Response;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST\NextcloudNews\Versions */
 class TestVersions extends \JKingWeb\Arsse\Test\AbstractTest {
@@ -32,17 +32,17 @@ class TestVersions extends \JKingWeb\Arsse\Test\AbstractTest {
     }
 
     public function testRespondToOptionsRequest(): void {
-        $exp = new EmptyResponse(204, ['Allow' => "HEAD,GET"]);
+        $exp = HTTP::respEmpty(204, ['Allow' => "HEAD,GET"]);
         $this->assertMessage($exp, $this->req("OPTIONS", "/"));
     }
 
     public function testUseIncorrectMethod(): void {
-        $exp = new EmptyResponse(405, ['Allow' => "HEAD,GET"]);
+        $exp = HTTP::respEmpty(405, ['Allow' => "HEAD,GET"]);
         $this->assertMessage($exp, $this->req("POST", "/"));
     }
 
     public function testUseIncorrectPath(): void {
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("GET", "/ook"));
         $this->assertMessage($exp, $this->req("OPTIONS", "/ook"));
     }
diff --git a/tests/cases/REST/TestREST.php b/tests/cases/REST/TestREST.php
index 0ba6ead..059803d 100644
--- a/tests/cases/REST/TestREST.php
+++ b/tests/cases/REST/TestREST.php
@@ -12,13 +12,13 @@ use JKingWeb\Arsse\REST;
 use JKingWeb\Arsse\REST\Exception501;
 use JKingWeb\Arsse\REST\NextcloudNews\V1_2 as NCN;
 use JKingWeb\Arsse\REST\TinyTinyRSS\API as TTRSS;
+use JKingWeb\Arsse\Misc\HTTP;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Request;
 use Laminas\Diactoros\Response;
 use Laminas\Diactoros\ServerRequest;
 use Laminas\Diactoros\Response\TextResponse;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST */
 class TestREST extends \JKingWeb\Arsse\Test\AbstractTest {
@@ -96,7 +96,7 @@ class TestREST extends \JKingWeb\Arsse\Test\AbstractTest {
     public function testSendAuthenticationChallenges(): void {
         self::setConf();
         $r = new REST();
-        $in = new EmptyResponse(401);
+        $in = HTTP::respEmpty(401);
         $exp = $in->withHeader("WWW-Authenticate", 'Basic realm="OOK", charset="UTF-8"');
         $act = $r->challenge($in, "OOK");
         $this->assertMessage($exp, $act);
@@ -190,8 +190,8 @@ class TestREST extends \JKingWeb\Arsse\Test\AbstractTest {
     public function testAddCorsHeaders(string $reqMethod, array $reqHeaders, array $resHeaders, array $expHeaders): void {
         $r = new REST();
         $req = new Request("", $reqMethod, "php://memory", $reqHeaders);
-        $res = new EmptyResponse(204, $resHeaders);
-        $exp = new EmptyResponse(204, $expHeaders);
+        $res = HTTP::respEmpty(204, $resHeaders);
+        $exp = HTTP::respEmpty(204, $expHeaders);
         $act = $r->corsApply($res, $req);
         $this->assertMessage($exp, $act);
     }
@@ -268,21 +268,21 @@ class TestREST extends \JKingWeb\Arsse\Test\AbstractTest {
         $stream = fopen("php://memory", "w+b");
         fwrite($stream, "ook");
         return [
-            [new EmptyResponse(204),                                          new EmptyResponse(204)],
-            [new EmptyResponse(401),                                          new EmptyResponse(401, ['WWW-Authenticate' => "Fake Value"])],
-            [new EmptyResponse(204, ['Allow' => "PUT"]),                      new EmptyResponse(204, ['Allow' => "PUT, OPTIONS"])],
-            [new EmptyResponse(204, ['Allow' => "PUT, OPTIONS"]),             new EmptyResponse(204, ['Allow' => "PUT, OPTIONS"])],
-            [new EmptyResponse(204, ['Allow' => "PUT,OPTIONS"]),              new EmptyResponse(204, ['Allow' => "PUT, OPTIONS"])],
-            [new EmptyResponse(204, ['Allow' => ["PUT", "OPTIONS"]]),         new EmptyResponse(204, ['Allow' => "PUT, OPTIONS"])],
-            [new EmptyResponse(204, ['Allow' => ["PUT, DELETE", "OPTIONS"]]), new EmptyResponse(204, ['Allow' => "PUT, DELETE, OPTIONS"])],
-            [new EmptyResponse(204, ['Allow' => "HEAD,GET"]),                 new EmptyResponse(204, ['Allow' => "HEAD, GET, OPTIONS"])],
-            [new EmptyResponse(204, ['Allow' => "GET"]),                      new EmptyResponse(204, ['Allow' => "GET, HEAD, OPTIONS"])],
-            [new TextResponse("ook", 200),                                    new TextResponse("ook", 200, ['Content-Length' => "3"])],
-            [new TextResponse("", 200),                                       new TextResponse("", 200, ['Content-Length' => "0"])],
-            [new TextResponse("ook", 404),                                    new TextResponse("ook", 404, ['Content-Length' => "3"])],
-            [new TextResponse("", 404),                                       new TextResponse("", 404)],
-            [new Response($stream, 200),                                      new Response($stream, 200, ['Content-Length' => "3"]),   new Request("", "GET")],
-            [new Response($stream, 200),                                      new EmptyResponse(200, ['Content-Length' => "3"]),       new Request("", "HEAD")],
+            [HTTP::respEmpty(204),                                          HTTP::respEmpty(204)],
+            [HTTP::respEmpty(401),                                          HTTP::respEmpty(401, ['WWW-Authenticate' => "Fake Value"])],
+            [HTTP::respEmpty(204, ['Allow' => "PUT"]),                      HTTP::respEmpty(204, ['Allow' => "PUT, OPTIONS"])],
+            [HTTP::respEmpty(204, ['Allow' => "PUT, OPTIONS"]),             HTTP::respEmpty(204, ['Allow' => "PUT, OPTIONS"])],
+            [HTTP::respEmpty(204, ['Allow' => "PUT,OPTIONS"]),              HTTP::respEmpty(204, ['Allow' => "PUT, OPTIONS"])],
+            [HTTP::respEmpty(204, ['Allow' => ["PUT", "OPTIONS"]]),         HTTP::respEmpty(204, ['Allow' => "PUT, OPTIONS"])],
+            [HTTP::respEmpty(204, ['Allow' => ["PUT, DELETE", "OPTIONS"]]), HTTP::respEmpty(204, ['Allow' => "PUT, DELETE, OPTIONS"])],
+            [HTTP::respEmpty(204, ['Allow' => "HEAD,GET"]),                 HTTP::respEmpty(204, ['Allow' => "HEAD, GET, OPTIONS"])],
+            [HTTP::respEmpty(204, ['Allow' => "GET"]),                      HTTP::respEmpty(204, ['Allow' => "GET, HEAD, OPTIONS"])],
+            [new TextResponse("ook", 200),                                  new TextResponse("ook", 200, ['Content-Length' => "3"])],
+            [new TextResponse("", 200),                                     new TextResponse("", 200, ['Content-Length' => "0"])],
+            [new TextResponse("ook", 404),                                  new TextResponse("ook", 404, ['Content-Length' => "3"])],
+            [new TextResponse("", 404),                                     new TextResponse("", 404)],
+            [new Response($stream, 200),                                    new Response($stream, 200, ['Content-Length' => "3"]),   new Request("", "GET")],
+            [new Response($stream, 200),                                    HTTP::respEmpty(200, ['Content-Length' => "3"]),         new Request("", "HEAD")],
         ];
     }
 
@@ -297,7 +297,7 @@ class TestREST extends \JKingWeb\Arsse\Test\AbstractTest {
         });
         if ($called) {
             $hMock = $this->mock($class);
-            $hMock->dispatch->returns(new EmptyResponse(204));
+            $hMock->dispatch->returns(HTTP::respEmpty(204));
             $this->objMock->get->with($class)->returns($hMock);
             Arsse::$obj = $this->objMock->get();
         }
diff --git a/tests/cases/REST/TinyTinyRSS/TestAPI.php b/tests/cases/REST/TinyTinyRSS/TestAPI.php
index 5220a69..d643491 100644
--- a/tests/cases/REST/TinyTinyRSS/TestAPI.php
+++ b/tests/cases/REST/TinyTinyRSS/TestAPI.php
@@ -11,6 +11,7 @@ use JKingWeb\Arsse\User;
 use JKingWeb\Arsse\Database;
 use JKingWeb\Arsse\Test\Result;
 use JKingWeb\Arsse\Misc\Date;
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\Context\Context;
 use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\Db\Transaction;
@@ -18,7 +19,6 @@ use JKingWeb\Arsse\REST\TinyTinyRSS\API;
 use JKingWeb\Arsse\Feed\Exception as FeedException;
 use Psr\Http\Message\ResponseInterface;
 use Laminas\Diactoros\Response\JsonResponse as Response;
-use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST\TinyTinyRSS\API<extended>
  *  @covers \JKingWeb\Arsse\REST\TinyTinyRSS\Exception */
@@ -188,12 +188,12 @@ LONG_STRING;
         $this->assertMessage($exp, $this->req(null, "POST", "", ""));
         $this->assertMessage($exp, $this->req(null, "POST", "/", ""));
         $this->assertMessage($exp, $this->req(null, "POST", "/index.php", ""));
-        $exp = new EmptyResponse(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req(null, "POST", "/bad/path", ""));
     }
 
     public function testHandleOptionsRequest(): void {
-        $exp = new EmptyResponse(204, [
+        $exp = HTTP::respEmpty(204, [
             'Allow'  => "POST",
             'Accept' => "application/json, text/json",
         ]);
@@ -215,7 +215,7 @@ LONG_STRING;
         $this->userMock->auth->with("jane.doe@example.com", "superman")->returns(true);
         $this->dbMock->sessionCreate->with("john.doe@example.com")->returns("PriestsOfSyrinx", "SolarFederation");
         $this->dbMock->sessionCreate->with("jane.doe@example.com")->returns("ClockworkAngels", "SevenCitiesOfGold");
-        if ($sessions instanceof EmptyResponse) {
+        if ($sessions instanceof ResponseInterface) {
             $exp1 = $sessions;
             $exp2 = $sessions;
         } elseif ($sessions) {
@@ -260,7 +260,7 @@ LONG_STRING;
             'op'       => "isLoggedIn",
             'sid'      => $data,
         ];
-        if ($result instanceof EmptyResponse) {
+        if ($result instanceof ResponseInterface) {
             $exp1 = $result;
             $exp2 = null;
         } elseif ($result) {
@@ -333,7 +333,7 @@ LONG_STRING;
             'userHTTPAuthRequired' => true,
             'userSessionEnforced'  => false,
         ];
-        $http401 = new EmptyResponse(401);
+        $http401 = HTTP::respEmpty(401);
         if ($type === "login") {
             return [
                 // conf,    user,  data,      result
@@ -532,7 +532,7 @@ LONG_STRING;
             'user'     => $this->userId,
             'password' => "secret",
         ];
-        $exp = new EmptyResponse(500);
+        $exp = HTTP::respEmpty(500);
         $this->assertMessage($exp, $this->req($data));
     }
 
diff --git a/tests/cases/REST/TinyTinyRSS/TestIcon.php b/tests/cases/REST/TinyTinyRSS/TestIcon.php
index f541f50..ecfb992 100644
--- a/tests/cases/REST/TinyTinyRSS/TestIcon.php
+++ b/tests/cases/REST/TinyTinyRSS/TestIcon.php
@@ -9,10 +9,10 @@ namespace JKingWeb\Arsse\TestCase\REST\TinyTinyRSS;
 use JKingWeb\Arsse\Arsse;
 use JKingWeb\Arsse\User;
 use JKingWeb\Arsse\Database;
+use JKingWeb\Arsse\Misc\HTTP;
 use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\REST\TinyTinyRSS\Icon;
 use Psr\Http\Message\ResponseInterface;
-use Laminas\Diactoros\Response\EmptyResponse as Response;
 
 /** @covers \JKingWeb\Arsse\REST\TinyTinyRSS\Icon<extended> */
 class TestIcon extends \JKingWeb\Arsse\Test\AbstractTest {
@@ -51,21 +51,21 @@ class TestIcon extends \JKingWeb\Arsse\Test\AbstractTest {
         $this->dbMock->subscriptionIcon->with($this->anything(), 2112, false)->returns(['url' => "http://example.net/logo.png"]);
         $this->dbMock->subscriptionIcon->with($this->anything(), 1337, false)->returns(['url' => "http://example.org/icon.gif\r\nLocation: http://bad.example.com/"]);
         // these requests should succeed
-        $exp = new Response(301, ['Location' => "http://example.com/favicon.ico"]);
+        $exp = HTTP::respEmpty(301, ['Location' => "http://example.com/favicon.ico"]);
         $this->assertMessage($exp, $this->req("42.ico"));
-        $exp = new Response(301, ['Location' => "http://example.net/logo.png"]);
+        $exp = HTTP::respEmpty(301, ['Location' => "http://example.net/logo.png"]);
         $this->assertMessage($exp, $this->req("2112.ico"));
-        $exp = new Response(301, ['Location' => "http://example.org/icon.gif"]);
+        $exp = HTTP::respEmpty(301, ['Location' => "http://example.org/icon.gif"]);
         $this->assertMessage($exp, $this->req("1337.ico"));
         // these requests should fail
-        $exp = new Response(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->req("ook.ico"));
         $this->assertMessage($exp, $this->req("ook"));
         $this->assertMessage($exp, $this->req("47.ico"));
         $this->assertMessage($exp, $this->req("2112.png"));
         $this->assertMessage($exp, $this->req("1123.ico"));
         // only GET is allowed
-        $exp = new Response(405, ['Allow' => "GET"]);
+        $exp = HTTP::respEmpty(405, ['Allow' => "GET"]);
         $this->assertMessage($exp, $this->req("2112.ico", "PUT"));
     }
 
@@ -79,32 +79,32 @@ class TestIcon extends \JKingWeb\Arsse\Test\AbstractTest {
         $this->dbMock->subscriptionIcon->with(null, 2112, false)->returns($url);
         $this->dbMock->subscriptionIcon->with(null, 1337, false)->returns($url);
         // these requests should succeed
-        $exp = new Response(301, ['Location' => "http://example.org/icon.gif"]);
+        $exp = HTTP::respEmpty(301, ['Location' => "http://example.org/icon.gif"]);
         $this->assertMessage($exp, $this->req("42.ico"));
         $this->assertMessage($exp, $this->req("2112.ico"));
         $this->assertMessage($exp, $this->req("1337.ico"));
         $this->assertMessage($exp, $this->reqAuth("42.ico"));
         $this->assertMessage($exp, $this->reqAuth("1337.ico"));
         // these requests should fail
-        $exp = new Response(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->reqAuth("2112.ico"));
-        $exp = new Response(401);
+        $exp = HTTP::respEmpty(401);
         $this->assertMessage($exp, $this->reqAuthFailed("42.ico"));
         $this->assertMessage($exp, $this->reqAuthFailed("1337.ico"));
         // with HTTP auth required, only authenticated requests should succeed
         self::setConf(['userHTTPAuthRequired' => true]);
-        $exp = new Response(301, ['Location' => "http://example.org/icon.gif"]);
+        $exp = HTTP::respEmpty(301, ['Location' => "http://example.org/icon.gif"]);
         $this->assertMessage($exp, $this->reqAuth("42.ico"));
         $this->assertMessage($exp, $this->reqAuth("1337.ico"));
         // anything else should fail
-        $exp = new Response(401);
+        $exp = HTTP::respEmpty(401);
         $this->assertMessage($exp, $this->req("42.ico"));
         $this->assertMessage($exp, $this->req("2112.ico"));
         $this->assertMessage($exp, $this->req("1337.ico"));
         $this->assertMessage($exp, $this->reqAuthFailed("42.ico"));
         $this->assertMessage($exp, $this->reqAuthFailed("1337.ico"));
         // resources for the wrtong user should still fail, too
-        $exp = new Response(404);
+        $exp = HTTP::respEmpty(404);
         $this->assertMessage($exp, $this->reqAuth("2112.ico"));
     }
 }