改名

http-message/Message.php

@@ -173,11 +173,11 @@ trait Message
 
 
 	/**
-	 * @return string
+	 * @return StreamInterface
 	 */
-	public function getBody(): string
+	public function getBody(): StreamInterface
 	{
-		return $this->stream->getContents();
+		return $this->stream;
 	}
 
 

http-message/ServerRequest.php

@@ -171,7 +171,7 @@ class ServerRequest extends Request implements ServerRequestInterface
 		if (empty($this->parsedBody)) {
 			$callback = Context::getContext('with.parsed.body.callback');
 
-			$this->parsedBody = $callback($this->getBody());
+			$this->parsedBody = $callback($this->getBody()->getContents());
 		}
 		return $this->parsedBody;
 	}