Function clusterSendUpdate

app/redis-6.2.6/src/cluster.c:2763–2773

Send an UPDATE message to the specified link carrying the specified 'node' * slots configuration. The node name, slots bitmap, and configEpoch info * are included. */

 * slots configuration. The node name, slots bitmap, and configEpoch info
 * are included. */
void clusterSendUpdate(clusterLink *link, clusterNode *node) {
    clusterMsg buf[1];
    clusterMsg *hdr = (clusterMsg*) buf;

    if (link == NULL) return;
    clusterBuildMessageHdr(hdr,CLUSTERMSG_TYPE_UPDATE);
    memcpy(hdr->data.update.nodecfg.nodename,node->name,CLUSTER_NAMELEN);
    hdr->data.update.nodecfg.configEpoch = htonu64(node->configEpoch);
    memcpy(hdr->data.update.nodecfg.slots,node->slots,sizeof(node->slots));
    clusterSendMessage(link,(unsigned char*)buf,ntohl(hdr->totlen));
}

/* Send a MODULE message.
 *