Add build_QT4.sh in bak

guowenxue

2021-08-17 c252ab0004c4ed88b4121043fb8b8d52341ae511

 apue/2.Socket/socket_client.c

@@ -109,7 +109,8 @@
          }
       }

       //printf("Read %d bytes data from server: '%s'\n", rv, buf);

       sleep(5);
    }