// Client hash function that checks if client is alive
static int
client_ping (const char *key, void *client, void *argument)
{
client_t *self = (client_t *) client;
// Expire client if it's not answered us in a while
if (zclock_time () >= self->expires_at && self->expires_at) {
// In case dialog doesn't handle expired_event by destroying
// client, set expires_at to zero to prevent busy looping
self->expires_at = 0;
server_client_execute ((server_t *) argument, self, expired_event);
}
else
// Check whether to send heartbeat to client
if (zclock_time () >= self->heartbeat_at) {
server_client_execute ((server_t *) argument, self, heartbeat_event);
self->heartbeat_at = zclock_time () + self->heartbeat;
}
return 0;
}
static void
server_client_message (server_t *self)
{
fmq_msg_t *request = fmq_msg_recv (self->router);
if (!request)
return; // Interrupted; do nothing
char *hashkey = zframe_strhex (fmq_msg_address (request));
client_t *client = (client_t *) zhash_lookup (self->clients, hashkey);
if (client == NULL) {
client = client_new (fmq_msg_address (request));
client->heartbeat = self->heartbeat;
client->router = self->router;
zhash_insert (self->clients, hashkey, client);
zhash_freefn (self->clients, hashkey, client_free);
}
free (hashkey);
if (client->request)
fmq_msg_destroy (&client->request);
client->request = request;
// Any input from client counts as heartbeat
client->heartbeat_at = zclock_time () + client->heartbeat;
// Any input from client counts as activity
client->expires_at = zclock_time () + client->heartbeat * 3;
if (fmq_msg_id (request) == FMQ_MSG_OHAI)
server_client_execute (self, client, ohai_event);
else
if (fmq_msg_id (request) == FMQ_MSG_ICANHAZ)
server_client_execute (self, client, icanhaz_event);
else
if (fmq_msg_id (request) == FMQ_MSG_NOM)
server_client_execute (self, client, nom_event);
else
if (fmq_msg_id (request) == FMQ_MSG_HUGZ)
server_client_execute (self, client, hugz_event);
else
if (fmq_msg_id (request) == FMQ_MSG_KTHXBAI)
server_client_execute (self, client, kthxbai_event);
}
// Client hash function that checks if client is alive
static int
client_dispatch (const char *key, void *client, void *server)
{
server_client_execute ((server_t *) server, (client_t *) client, dispatch_event);
return 0;
}
