diff --git a/HISTORY b/HISTORY
index 198e529..74bc0e4 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,6 +1,7 @@
 
-Version 1.59  2022-06-24
+Version 1.59  2022-06-25
   * open file with flag O_CLOEXEC
+  * add global var g_set_cloexec and macro FC_SET_CLOEXEC
 
 Version 1.58  2022-06-04
   * add function conn_pool_connect_server_ex1 to support service name
diff --git a/src/connection_pool.c b/src/connection_pool.c
index 5cf8a3d..6d05941 100644
--- a/src/connection_pool.c
+++ b/src/connection_pool.c
@@ -125,7 +125,7 @@ int conn_pool_connect_server_ex1(ConnectionInfo *conn,
 	}
 
     if ((conn->sock=socketCreateEx2(conn->socket_domain, conn->ip_addr,
-                    O_NONBLOCK | O_CLOEXEC, bind_ipaddr, &result)) < 0)
+                    O_NONBLOCK, bind_ipaddr, &result)) < 0)
     {
         return result;
     }
@@ -160,8 +160,8 @@ int conn_pool_async_connect_server_ex(ConnectionInfo *conn,
         close(conn->sock);
     }
 
-    if ((conn->sock=socketCreateEx2(conn->socket_domain, conn->ip_addr,
-                    O_NONBLOCK | O_CLOEXEC, bind_ipaddr,
+    if ((conn->sock=socketCreateEx2(conn->socket_domain,
+                    conn->ip_addr, O_NONBLOCK, bind_ipaddr,
                     &result)) < 0)
     {
         return result;
diff --git a/src/shared_func.c b/src/shared_func.c
index 4886683..37fd469 100644
--- a/src/shared_func.c
+++ b/src/shared_func.c
@@ -45,6 +45,8 @@
 #endif
 #endif
 
+bool g_set_cloexec = false;
+
 char *formatDatetime(const time_t nTime, \
 	const char *szDateFormat, \
 	char *buff, const int buff_size)
diff --git a/src/shared_func.h b/src/shared_func.h
index 2aba889..687d764 100644
--- a/src/shared_func.h
+++ b/src/shared_func.h
@@ -41,10 +41,20 @@
     normalize_path_ex(from, filename, full_filename, size, \
             NORMALIZE_FLAGS_URL_ENABLED_AND_APPEND_PARAMS)
 
+#define FC_SET_CLOEXEC(fd) \
+    if (g_set_cloexec) fd_set_cloexec(fd)
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+    extern bool g_set_cloexec;
+
+static inline void fc_enable_fd_cloexec(const bool cloexec)
+{
+    g_set_cloexec = cloexec;
+}
+
 /** lowercase the string
  *  parameters:
  *  	src: input string, will be changed
@@ -730,7 +740,7 @@ int fd_add_flags(int fd, int adding_flags);
  *  	fd: the fd to set
  *  return: error no , 0 success, != 0 fail
 */
-#define set_nonblock(fd) fd_add_flags(fd, O_NONBLOCK | FD_CLOEXEC)
+#define set_nonblock(fd) fd_add_flags(fd, O_NONBLOCK)
 
 /** set fd FD_CLOEXEC flags
  *  parameters:
diff --git a/src/sockopt.c b/src/sockopt.c
index 8d04797..b45b364 100644
--- a/src/sockopt.c
+++ b/src/sockopt.c
@@ -1012,6 +1012,7 @@ int socketCreateEx2(int af, const char *server_ip,
         return -1;
     }
 
+    FC_SET_CLOEXEC(sock);
     SET_SOCKOPT_NOSIGPIPE(sock);
     if (flags != 0)
     {
@@ -1402,6 +1403,7 @@ int socketServer2(int af, const char *bind_ipaddr, const int port, int *err_no)
 		return -1;
 	}
 
+    FC_SET_CLOEXEC(sock);
     SET_SOCKOPT_NOSIGPIPE(sock);
 
 	result = 1;
@@ -2126,7 +2128,7 @@ int tcpsetnonblockopt(int fd)
 		return errno != 0 ? errno : EACCES;
 	}
 
-	if (fcntl(fd, F_SETFL, flags | (O_NONBLOCK | FD_CLOEXEC)) < 0)
+	if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0)
 	{
 		logError("file: "__FILE__", line: %d, " \
 			"fcntl failed, errno: %d, error info: %s.", \