diff --git a/kiri-websocket-server/WebSocketInterface.php b/kiri-websocket-server/WebSocketInterface.php
new file mode 100644
index 00000000..a534095b
--- /dev/null
+++ b/kiri-websocket-server/WebSocketInterface.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace Kiri\Websocket;
+
+
+/**
+ * @mixin \Swoole\WebSocket\Server
+ * @mixin \Swoole\Coroutine\Http\Server
+ */
+interface WebSocketInterface
+{
+
+
+	/**
+	 * @param int $fd
+	 * @param mixed $data
+	 * @param int $opcode
+	 * @param int $flags
+	 * @return bool
+	 */
+	public function push(int $fd, string $data, int $opcode = WEBSOCKET_OPCODE_TEXT, int $flags = SWOOLE_WEBSOCKET_FLAG_FIN): bool;
+
+
+	/**
+	 * @param int $fd
+	 * @param int $code
+	 * @param string $reason
+	 * @return mixed
+	 */
+	public function disconnect(int $fd, int $code = SWOOLE_WEBSOCKET_CLOSE_NORMAL, string $reason = ''): bool;
+
+
+	/**
+	 * @param int $fd
+	 * @return bool
+	 */
+	public function isEstablished(int $fd): bool;
+
+
+	/**
+	 * @param int $fd
+	 * @return bool
+	 */
+	public function exist(int $fd): bool;
+
+
+}