MySQL 8.4 C API Developer Guide
enum net_async_status
mysql_real_connect_nonblocking(MYSQL *mysql,
const char *host,
const char *user,
const char *passwd,
const char *db,
unsigned int port,
const char *unix_socket,
unsigned long
client_flag)
mysql_real_connect_nonblocking()
is an asynchronous function. It is the counterpart of the
mysql_real_connect()
synchronous function, for use by applications that require
asynchronous communication with the server. For general
information about writing asynchronous C API applications,
see Chapter 7, C API Asynchronous Interface.
mysql_real_connect_nonblocking()
is used similarly to
mysql_real_connect(). For
details about the latter, see
Section 5.4.58, “mysql_real_connect()”. The two functions differ
as follows:
mysql_real_connect()
returns a connection handler or NULL.
mysql_real_connect_nonblocking()
returns an enum net_async_status status
indicator.
mysql_real_connect_nonblocking()
was added in MySQL 8.0.16.
Returns an enum net_async_status value. See
the description in
Section 7.2, “C API Asynchronous Interface Data Structures”. A
NET_ASYNC_ERROR return status indicates an
error.