typedef bool (*mongoc_client_session_with_transaction_cb_t) (

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025    MONGOC_CLIENT_SESSION_WITH_TRANSACTION_CB_T(3)

       • session: A mongoc_client_session_t.

       • ctx: A void* set to the the user-provided ctx passed to mongoc_client_session_with_transaction().

       • reply:  An  optional  location  for  a  bson_t  or  NULL.  The  callback should set this if it runs any
         operations against the server and receives replies.

       • error: A bson_error_t. The callback should set this if it receives any errors while running  operations
         against the server.

       Returns true for success and false on failure. If cb returns false then it should also set error.

       SEEALSO:mongoc_client_session_with_transaction()

          typedef bool (*mongoc_client_session_with_transaction_cb_t) (
             mongoc_client_session_t *session,
             void *ctx,
             bson_t **reply,
             bson_error_t *error);

       Provide  this callback to mongoc_client_session_with_transaction(). The callback should run a sequence of
       operations meant to be contained within a transaction.  The callback  should  not  attempt  to  start  or
       commit transactions.