diff --git a/src/exec.c b/src/exec.c
index ce56fbe..a8170dc 100644
--- a/src/exec.c
+++ b/src/exec.c
@@ -284,7 +284,7 @@ static int hyper_do_exec_cmd(void *data)
 	struct hyper_exec_arg *arg = data;
 	struct hyper_exec *exec = arg->exec;
 	struct hyper_pod *pod = arg->pod;
-	int pipe[2], pid;
+	int pipe[2] = {-1, -1}, pid;
 
 	if (exec->id) {
 		char path[512];
@@ -324,11 +324,6 @@ static int hyper_do_exec_cmd(void *data)
 			goto out;
 		}
 
-		if (hyper_send_type_block(arg->pipe[1], READY, 0) < 0) {
-			fprintf(stderr, "%s send ready message failed\n", __func__);
-			goto out;
-		}
-
 		fprintf(stdout, "hyper init get ready message\n");
 		exec->pid = pid;
 		fprintf(stdout, "create exec cmd %s pid %d\n", exec->argv[0], pid);
@@ -339,6 +334,11 @@ static int hyper_do_exec_cmd(void *data)
 			fprintf(stderr, "add pts master event failed\n");
 			goto out;
 		}
+
+		if (hyper_send_type_block(arg->pipe[1], READY, 0) < 0) {
+			fprintf(stderr, "%s send ready message failed\n", __func__);
+			goto out;
+		}
 out:
 		close(pipe[0]);
 		close(pipe[1]);
@@ -419,6 +419,7 @@ int hyper_exec_cmd(char *json, int length)
 		return -1;
 	}
 
+	fprintf(stdout, "%s get ready message %"PRIu32 "\n", __func__, type);
 	ret = 0;
 out:
 	close(arg.pipe[0]);
diff --git a/src/net.c b/src/net.c
index ff1f3c6..4ece161 100644
--- a/src/net.c
+++ b/src/net.c
@@ -90,7 +90,7 @@ int hyper_send_type(int fd, uint32_t type)
 	return hyper_send_msg(fd, type, 0, NULL);
 }
 
-int hyper_get_type_block(int fd, uint32_t *type)
+int hyper_get_type(int fd, uint32_t *type)
 {
 	int len = 0, size;
 	uint8_t buf[8];
@@ -111,6 +111,34 @@ int hyper_get_type_block(int fd, uint32_t *type)
 	return 0;
 }
 
+int hyper_get_type_block(int fd, uint32_t *type)
+{
+	int ret = 0, flags;
+
+	flags = fcntl(fd, F_GETFL, 0);
+	if (flags < 0) {
+		fprintf(stderr, "%s get fd flag failed\n", __func__);
+		return -1;
+	}
+
+	if (fcntl(fd, F_SETFL, flags & ~O_NONBLOCK) < 0) {
+		perror("set fd BLOCK failed");
+		return -1;
+	}
+
+	ret = hyper_get_type(fd, type);
+	if (ret < 0) {
+		fprintf(stderr, "%s can not get type\n", __func__);
+	}
+
+	if (fcntl(fd, F_SETFL, flags) < 0) {
+		perror("restore fd flag failed");
+		return -1;
+	}
+
+	return ret;
+}
+
 int hyper_send_type_block(int fd, uint32_t type, int need_ack)
 {
 	int ret = 0, flags;
@@ -134,7 +162,7 @@ int hyper_send_type_block(int fd, uint32_t type, int need_ack)
 	if (need_ack == 0)
 		goto out;
 
-	ret = hyper_get_type_block(fd, &t);
+	ret = hyper_get_type(fd, &t);
 	if (ret < 0) {
 		fprintf(stderr, "can not get type\n");
 		goto out;
@@ -145,8 +173,8 @@ int hyper_send_type_block(int fd, uint32_t type, int need_ack)
 	if (t != ACK)
 		ret = -1;
 out:
-	if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0) {
-		perror("set fd BLOCK failed");
+	if (fcntl(fd, F_SETFL, flags) < 0) {
+		perror("restore fd flag failed");
 		return -1;
 	}