Pass response body size from headers to PsrMessageStream

Author: luzrain

src/Internal/PsrMessageStream.php

@@ -18,7 +18,7 @@ final class PsrMessageStream implements StreamInterface
 
     private int $position = 0;
 
-    public function __construct(private readonly ReadableStream $source)
+    public function __construct(private readonly ReadableStream $source, private readonly ?int $size = null)
     {
     }
 
@@ -64,7 +64,7 @@ public function getMetadata(?string $key = null): ?array
 
     public function getSize(): ?int
     {
-        return null;
+        return $this->size;
     }
 
     public function isReadable(): bool

src/PsrAdapter.php

@@ -74,7 +74,13 @@ public function toPsrResponse(Response $response): PsrResponse
             $psrResponse = $psrResponse->withAddedHeader($headerName, $headerValue);
         }
 
-        return $psrResponse->withBody(new PsrMessageStream($response->getBody()));
+        $size = (int) $response->getHeader('Content-Length');
+
+        if ($size <= 0) {
+            $size = null;
+        }
+
+        return $psrResponse->withBody(new PsrMessageStream($response->getBody(), $size));
     }
 
     /**