Function addReplyPubsubUnsubscribed

app/redis-6.2.6/src/pubsub.c:82–93

Send the pubsub unsubscription notification to the client. * Channel can be NULL: this is useful when the client sends a mass * unsubscribe command but there are no channels to unsubscribe from: we * still send a notification. */

 * unsubscribe command but there are no channels to unsubscribe from: we
 * still send a notification. */
void addReplyPubsubUnsubscribed(client *c, robj *channel) {
    if (c->resp == 2)
        addReply(c,shared.mbulkhdr[3]);
    else
        addReplyPushLen(c,3);
    addReply(c,shared.unsubscribebulk);
    if (channel)
        addReplyBulk(c,channel);
    else
        addReplyNull(c);
    addReplyLongLong(c,clientSubscriptionsCount(c));
}

/* Send the pubsub pattern subscription notification to the client. */
void addReplyPubsubPatSubscribed(client *c, robj *pattern) {