I'm calling simple mongo_connect(), but I get MONGO_ERROR back, even if the connection succeeds.

(gdb) next
904 if (replica_set)

{ (gdb) 920 mongo_servers->host, mongo_servers->port); (gdb) list 915 result = mongo_replset_connect(&wi->connection); 916 917 }

else {
918
919 result = mongo_connect(&wi->connection,
920 mongo_servers->host, mongo_servers->port);
(gdb) next
919 result = mongo_connect(&wi->connection,
(gdb) print result
$1 = 0x7fff
(gdb) print wi->connection.err
$2 = MONGO_CONN_SUCCESS

I have to check connection->err irrespective of the return code from mongo_connect()

The connection is, in fact, successful, I can send objects and everything.