dogetserv.c: In function 'dogetserv':
dogetserv.c:86:26: error: assignment makes integer from pointer without a cast [-Werror=int-conversion]
    key[sizeof (key) - 1] = NULL;
                          ^
dogetserv.c:89:9: error: assignment makes integer from pointer without a cast [-Werror=int-conversion]
     *cp = NULL;
         ^
cc1: all warnings being treated as errors