diff --git a/HttpServer/Http/HttpHeaders.php b/HttpServer/Http/HttpHeaders.php
index d3c84e12..83226507 100644
--- a/HttpServer/Http/HttpHeaders.php
+++ b/HttpServer/Http/HttpHeaders.php
@@ -100,7 +100,7 @@ trait HttpHeaders
 	 */
 	public function exists($name): bool
 	{
-		return $this->_headers[$name] ?? null === null;
+		return ($this->_headers[$name] ?? null) === null;
 	}
 
 
diff --git a/HttpServer/Http/Request.php b/HttpServer/Http/Request.php
index 6b1733f1..7ed507d5 100644
--- a/HttpServer/Http/Request.php
+++ b/HttpServer/Http/Request.php
@@ -366,7 +366,7 @@ class Request extends HttpService implements RequestInterface
 	/**
 	 * @return mixed|null
 	 */
-	public function getIp(): string|null
+	#[Pure] public function getIp(): string|null
 	{
 		$headers = $this->getHeaders();
 		if (!empty($headers['remoteip'])) return $headers['remoteip'];
diff --git a/HttpServer/Route/Router.php b/HttpServer/Route/Router.php
index 53cfb25c..66364e90 100644
--- a/HttpServer/Route/Router.php
+++ b/HttpServer/Route/Router.php
@@ -524,7 +524,6 @@ class Router extends HttpService implements RouterInterface
 	 * @param RequestInterface $request
 	 * @return Node|null
 	 * 树杈搜索
-	 * @throws RequestException
 	 */
 	public function Branch_search(RequestInterface $request): ?Node
 	{