-/*
- Setup an outgoing meta connection.
-*/
-int setup_outgoing_connection(char *name)
-{
- connection_t *ncn;
- struct hostent *h;
- config_t const *cfg;
-cp
- if(check_id(name))
- {
- syslog(LOG_ERR, _("Invalid name for outgoing connection"));
- return -1;
- }
-
- ncn = new_connection();
- asprintf(&ncn->name, "%s", name);
-
- if(read_host_config(ncn))
- {
- syslog(LOG_ERR, _("Error reading host configuration file for %s"));
- free_connection(ncn);
- return -1;
- }
-
- if(!(cfg = get_config_val(ncn->config, config_address)))
- {
- syslog(LOG_ERR, _("No address specified for %s"));
- free_connection(ncn);
- return -1;
- }
-
- if(!(h = gethostbyname(cfg->data.ptr)))
- {
- syslog(LOG_ERR, _("Error looking up `%s': %m"), cfg->data.ptr);
- free_connection(ncn);
- return -1;
- }
-
- ncn->address = ntohl(*((ip_t*)(h->h_addr_list[0])));
- ncn->hostname = hostlookup(htonl(ncn->address));
-
- if(setup_outgoing_meta_socket(ncn) < 0)
- {
- syslog(LOG_ERR, _("Could not set up a meta connection to %s"),
- ncn->hostname);
- free_connection(ncn);
- return -1;
- }
-
- ncn->status.outgoing = 1;
- ncn->buffer = xmalloc(MAXBUFSIZE);
- ncn->buflen = 0;
- ncn->last_ping_time = time(NULL);
-
- connection_add(ncn);
-
- send_id(ncn);
-cp
- return 0;
-}
+ contradicting_add_edge = 0;
+ contradicting_del_edge = 0;
+
+ /* If AutoConnect is set, check if we need to make or break connections. */
+
+ if(autoconnect && node_tree->count > 1) {
+ /* Count number of active connections */
+ int nc = 0;
+ for list_each(connection_t, c, connection_list) {
+ if(c->status.active && !c->status.control)
+ nc++;
+ }
+
+ if(nc < autoconnect) {
+ /* Not enough active connections, try to add one.
+ Choose a random node, if we don't have a connection to it,
+ and we are not already trying to make one, create an
+ outgoing connection to this node.
+ */
+ int r = rand() % node_tree->count;
+ int i = 0;
+
+ for splay_each(node_t, n, node_tree) {
+ if(i++ != r)
+ continue;
+
+ if(n->connection)
+ break;
+
+ bool found = false;
+
+ for list_each(outgoing_t, outgoing, outgoing_list) {
+ if(!strcmp(outgoing->name, n->name)) {
+ found = true;
+ break;
+ }
+ }
+
+ if(!found) {
+ logger(DEBUG_CONNECTIONS, LOG_INFO, "Autoconnecting to %s", n->name);
+ outgoing_t *outgoing = xzalloc(sizeof *outgoing);
+ outgoing->name = xstrdup(n->name);
+ list_insert_tail(outgoing_list, outgoing);
+ setup_outgoing_connection(outgoing);
+ }
+ break;
+ }
+ } else if(nc > autoconnect) {
+ /* Too many active connections, try to remove one.
+ Choose a random outgoing connection to a node
+ that has at least one other connection.
+ */
+ int r = rand() % nc;
+ int i = 0;
+
+ for list_each(connection_t, c, connection_list) {
+ if(!c->status.active || c->status.control)
+ continue;
+
+ if(i++ != r)
+ continue;
+
+ if(!c->outgoing || !c->node || c->node->edge_tree->count < 2)
+ break;
+
+ logger(DEBUG_CONNECTIONS, LOG_INFO, "Autodisconnecting from %s", c->name);
+ list_delete(outgoing_list, c->outgoing);
+ c->outgoing = NULL;
+ terminate_connection(c, c->status.active);
+ break;
+ }
+ }
+
+ if(nc >= autoconnect) {
+ /* If we have enough active connections,
+ remove any pending outgoing connections.
+ */
+ for list_each(outgoing_t, o, outgoing_list) {
+ bool found = false;
+ for list_each(connection_t, c, connection_list) {
+ if(c->outgoing == o) {
+ found = true;
+ break;
+ }
+ }
+ if(!found) {
+ logger(DEBUG_CONNECTIONS, LOG_INFO, "Cancelled outgoing connection to %s", o->name);
+ list_delete_node(outgoing_list, node);
+ }
+ }
+ }
+ }