diff --git a/output/alias/Http/Client/Exception.php b/output/alias/Http/Client/Exception.php
new file mode 100644
index 00000000..09eacd7d
--- /dev/null
+++ b/output/alias/Http/Client/Exception.php
@@ -0,0 +1,5 @@
+<?php
+namespace Co\Http\Client 
+{
+     class Exception extends \Swoole\Coroutine\Http\Client\Exception {}
+}
diff --git a/output/constants.php b/output/constants.php
index 5b1aecf6..afd4b657 100644
--- a/output/constants.php
+++ b/output/constants.php
@@ -1,9 +1,9 @@
 <?php
-define('SWOOLE_VERSION', '4.3.0');
-define('SWOOLE_VERSION_ID', 40300);
+define('SWOOLE_VERSION', '4.3.1');
+define('SWOOLE_VERSION_ID', 40301);
 define('SWOOLE_MAJOR_VERSION', 4);
 define('SWOOLE_MINOR_VERSION', 3);
-define('SWOOLE_RELEASE_VERSION', 0);
+define('SWOOLE_RELEASE_VERSION', 1);
 define('SWOOLE_EXTRA_VERSION', '');
 define('SWOOLE_DEBUG', '');
 define('SWOOLE_BASE', 1);
@@ -159,7 +159,7 @@
 define('SWOOLE_HTTP_CLIENT_ESTATUS_REQUEST_TIMEOUT', -2);
 define('SWOOLE_HTTP_CLIENT_ESTATUS_SERVER_RESET', -3);
 define('SWOOLE_DEFAULT_MAX_CORO_NUM', 3000);
-define('SWOOLE_MAX_CORO_NUM_LIMIT', 9223372036854775807);
+define('SWOOLE_CORO_MAX_NUM_LIMIT', 9223372036854775807);
 define('SWOOLE_CORO_INIT', 0);
 define('SWOOLE_CORO_WAITING', 1);
 define('SWOOLE_CORO_RUNNING', 2);
diff --git a/output/functions.php b/output/functions.php
index 9f1ed2f2..be9c40ff 100644
--- a/output/functions.php
+++ b/output/functions.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * @since 4.3.0
+ * @since 4.3.1
  */
 
 function swoole_version(){}
diff --git a/output/namespace/Coroutine/Http/Client/Exception.php b/output/namespace/Coroutine/Http/Client/Exception.php
new file mode 100644
index 00000000..37aaca09
--- /dev/null
+++ b/output/namespace/Coroutine/Http/Client/Exception.php
@@ -0,0 +1,31 @@
+<?php
+namespace Swoole\Coroutine\Http\Client;
+
+class Exception extends \Swoole\Exception
+{
+
+    protected $message;
+    protected $code;
+    protected $file;
+    protected $line;
+
+    /**
+     * @param $message[optional]
+     * @param $code[optional]
+     * @param $previous[optional]
+     * @return mixed
+     */
+    public function __construct($message = null, $code = null, $previous = null){}
+
+    /**
+     * @return mixed
+     */
+    public function __wakeup(){}
+
+    /**
+     * @return mixed
+     */
+    public function __toString(){}
+
+
+}
diff --git a/output/namespace/Coroutine/Socket.php b/output/namespace/Coroutine/Socket.php
index dc78d1b3..3cb96ebd 100644
--- a/output/namespace/Coroutine/Socket.php
+++ b/output/namespace/Coroutine/Socket.php
@@ -6,6 +6,7 @@ class Socket
 
     public $fd;
     public $errCode;
+    public $errMsg;
 
     /**
      * @param $domain[required]