Provides programmatic access to the information displayed by the dblocate utility, listing all the SQL Anywhere database servers
on the local network that are listening on TCP/IP.
The callback function must have the following prototype:
The callback function is called for each server found. If the callback function returns 0, db_locate_servers stops iterating
through servers.
The sqlca and callback_user_data passed to the callback function are those passed into db_locate_servers. The second parameter
is a pointer to an a_server_address structure. a_server_address is defined in sqlca.h, with the following definition: