LWIP: the error code 128 can not get by"getsockopt" (IDFGH...
Hi My code works with esp-idf Release 3.3.4. And it works well; This days I try to modify the code with esp-idf Release 4.2. I found that i can not get the error code(128) with "getsockopt" .And at that time i can get the error code from...