bool dump_connections(connection_t *cdump) {
for list_each(connection_t, c, connection_list) {
send_request(cdump, "%d %d %s %s %x %d %x",
CONTROL, REQ_DUMP_CONNECTIONS,
c->name, c->hostname, c->options, c->socket,
bitfield_to_int(&c->status, sizeof c->status));
}
/*
Check if the other end is active.
If we have sent packets, but didn't receive any,
then possibly the other end is dead. We send a
PING request over the meta connection. If the other
end does not reply in time, we consider them dead
and close the connection.
*/
static void check_dead_connections(void) {
avl_node_t *node, *next;
connection_t *c;
for(node = connection_tree->head; node; node = next) {
next = node->next;
c = node->data;
if(c->last_ping_time + pingtimeout <= now) {
if(c->status.active) {
if(c->status.pinged) {
ifdebug(CONNECTIONS) logger(LOG_INFO, "%s (%s) didn't respond to PING in %ld seconds",
c->name, c->hostname, (long)now - c->last_ping_time);
c->status.timeout = true;
terminate_connection(c, true);
} else if(c->last_ping_time + pinginterval <= now) {
send_ping(c);
}
} else {
if(c->status.remove) {
logger(LOG_WARNING, "Old connection_t for %s (%s) status %04x still lingering, deleting...",
c->name, c->hostname, bitfield_to_int(&c->status, sizeof c->status));
connection_del(c);
continue;
}
ifdebug(CONNECTIONS) logger(LOG_WARNING, "Timeout from %s (%s) during authentication",
c->name, c->hostname);
if(c->status.connecting) {
c->status.connecting = false;
closesocket(c->socket);
do_outgoing_connection(c);
} else {
terminate_connection(c, false);
}
}
}
if(c->outbuflen > 0 && c->last_flushed_time + pingtimeout <= now) {
if(c->status.active) {
ifdebug(CONNECTIONS) logger(LOG_INFO,
"%s (%s) could not flush for %ld seconds (%d bytes remaining)",
c->name, c->hostname, (long)now - c->last_flushed_time, c->outbuflen);
c->status.timeout = true;
terminate_connection(c, true);
}
}
}
}
