--- lbbs/src/net_server.c	2025/05/10 15:23:42	1.21
+++ lbbs/src/net_server.c	2025/05/11 02:42:38	1.23
@@ -56,20 +56,30 @@ int net_server(const char *hostaddr, in_
 	}
 
 	sin.sin_family = AF_INET;
-	sin.sin_addr.s_addr =
-		(strnlen(hostaddr, sizeof(hostaddr)) > 0 ? inet_addr(hostaddr) : INADDR_ANY);
+	sin.sin_addr.s_addr = (hostaddr[0] != '\0' ? inet_addr(hostaddr) : INADDR_ANY);
 	sin.sin_port = htons(port);
 
+	// Reuse address and port
+	flags = 1;
+	if (setsockopt(socket_server, SOL_SOCKET, SO_REUSEADDR, &flags, sizeof(flags)) < 0)
+	{
+		log_error("setsockopt SO_REUSEADDR error (%d)\n", errno);
+	}
+	if (setsockopt(socket_server, SOL_SOCKET, SO_REUSEPORT, &flags, sizeof(flags)) < 0)
+	{
+		log_error("setsockopt SO_REUSEPORT error (%d)\n", errno);
+	}
+
 	if (bind(socket_server, (struct sockaddr *)&sin, sizeof(sin)) < 0)
 	{
-		log_error("Bind address %s:%u failed\n",
-				  inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
+		log_error("Bind address %s:%u failed (%d)\n",
+				  inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), errno);
 		exit(2);
 	}
 
 	if (listen(socket_server, 10) < 0)
 	{
-		log_error("Socket listen failed\n");
+		log_error("Socket listen failed (%d)\n", errno);
 		exit(3);
 	}
 
@@ -90,18 +100,18 @@ int net_server(const char *hostaddr, in_
 	{
 		sigprocmask(SIG_BLOCK, &nsigset, &osigset);
 
-		while (SYS_child_exit_count > 0)
+		while ((SYS_child_exit || SYS_server_exit) && SYS_child_process_count > 0)
 		{
 			siginfo.si_pid = 0;
 			ret = waitid(P_ALL, 0, &siginfo, WEXITED | WNOHANG);
 			if (ret == 0 && siginfo.si_pid > 0)
 			{
-				SYS_child_exit_count--;
 				SYS_child_process_count--;
 				log_std("Child process (%d) exited\n", siginfo.si_pid);
 			}
 			else if (ret == 0)
 			{
+				SYS_child_exit = 0;
 				break;
 			}
 			else if (ret < 0)
@@ -111,8 +121,9 @@ int net_server(const char *hostaddr, in_
 			}
 		}
 
-		if (SYS_server_exit && SYS_child_exit_count == 0)
+		if (SYS_server_exit && !SYS_child_exit && SYS_child_process_count > 0)
 		{
+			log_std("Notify %d child process to exit\n", SYS_child_process_count);
 			if (kill(0, SIGTERM) < 0)
 			{
 				log_error("Send SIGTERM signal failed (%d)\n", errno);
@@ -136,10 +147,10 @@ int net_server(const char *hostaddr, in_
 
 		FD_ZERO(&testfds);
 		FD_SET(socket_server, &testfds);
-	
+
 		timeout.tv_sec = 0;
 		timeout.tv_usec = 100 * 1000; // 0.1 second
-	
+
 		ret = select(FD_SETSIZE, &testfds, NULL, NULL, &timeout);
 
 		if (ret < 0)