diff --git a/APP_Framework/Applications/app_test/test_ftpclient_final/ftpserver.c b/APP_Framework/Applications/app_test/test_ftpclient_final/ftpserver.c
index 4efc7b092..b9c895159 100644
--- a/APP_Framework/Applications/app_test/test_ftpclient_final/ftpserver.c
+++ b/APP_Framework/Applications/app_test/test_ftpclient_final/ftpserver.c
@@ -164,7 +164,10 @@ char* GetRespond(char* buf, int it,int *ret,int cmd_fd) {
         char* buff = (char*)malloc(file_size);
 
         fread(buf, 1, file_size, file);
-        write(fd_map[cmd_fd], buff, strlen(buff));
+        int size = write(fd_map[cmd_fd], buff, strlen(buff));
+        if (size < 0) {
+            printf("failed to send message\n");
+        }
 
         fclose(file);
         free(buff);
@@ -180,7 +183,10 @@ char* GetRespond(char* buf, int it,int *ret,int cmd_fd) {
 
         char* buff = (char*)malloc(5000);
 
-        read(fd_map[cmd_fd], buff, sizeof(buff));
+        int size = read(fd_map[cmd_fd], buff, 5000);
+        while (size < 0) {
+            size = read(fd_map[cmd_fd], buff, 5000);
+        }
         fwrite(buff, 1, strlen(buff), file);
 
         fclose(file);
@@ -207,7 +213,7 @@ void *RecvSend(void *arg)
         char buf[100];
         memset(buf, 0, sizeof(buf));
         int size;
-        size = read(cmd_fd, buf, sizeof(buf));
+        size = read(cmd_fd, buf, 100);
 
         if (size < 0) {
             printf("Failed to read or client closed\n");