Function addReplyNullArray

app/redis-6.2.6/src/networking.c:806–812

A null array is a concept that no longer exists in RESP3. However * RESP2 had it, so API-wise we have this call, that will emit the correct * RESP2 protocol, however for RESP3 the reply will always be just the * Null type "_\r\n". */

 * RESP2 protocol, however for RESP3 the reply will always be just the
 * Null type "_\r\n". */
void addReplyNullArray(client *c) {
    if (c->resp == 2) {
        addReplyProto(c,"*-1\r\n",5);
    } else {
        addReplyProto(c,"_\r\n",3);
    }
}

/* Create the length prefix of a bulk reply, example: $2234 */
void addReplyBulkLen(client *c, robj *obj) {