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Description.  This function can be used to determine whether a management server is running on a given connection from a management client.

Prior to MySQL 5.1.17, this function was available but required extremely large timeouts to be configured for it to be effective.


int ndb_mgm_check_connection
      NdbMgmHandle handle

Parameters.  An NdbMgmHandle (see Section 3.1, “General Concepts”).

Return value.  In NDB 7.5 and later, this function returns 0 on success, -1 when the handle is null, and -2 when not connected.

In NDB 7.4 and earlier, this function returned -1 in the event of an error; otherwise it returned 0, even when the management server handle was NULL, or when the connection check failed (Bug #53242, Bug #11760802).

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