Improve code

Author: msmakouz

composer.json

@@ -74,7 +74,7 @@
     },
     "suggest": {
         "spiral/roadrunner-cli": "Provides RoadRunner installation and management CLI tools",
-        "ext-protobuf": "Provides Protocol Buffers support"
+        "ext-protobuf": "Provides Protocol Buffers support. Without it, performance will be lower."
     },
     "config": {
         "sort-packages": true

src/HttpWorker.php

@@ -63,7 +63,7 @@ public function waitRequest(): ?Request
         }
 
         if (static::$codec === null) {
-            static::$codec = json_validate($payload->header) ? Frame::CODEC_JSON : Frame::CODEC_PROTO;
+            static::$codec = \json_validate($payload->header) ? Frame::CODEC_JSON : Frame::CODEC_PROTO;
         }
 
         if (static::$codec === Frame::CODEC_PROTO) {
@@ -198,7 +198,7 @@ private function requestFromProto(string $body, RequestProto $message): Request
                 $this->headerValueToArray($message->getAttributes()),
             ),
             query: $query,
-            body: $message->getParsed() && empty($body) ? \json_encode([]) : $body,
+            body: $message->getParsed() && empty($body) ? '{}' : $body,
             parsed: $message->getParsed(),
         );
     }