System.Data.SqlClient.TdsParser.ProcessAttention C# (CSharp) Méthode

        private void ProcessAttention(TdsParserStateObject stateObj)
        {
            if (_state == TdsParserState.Closed || _state == TdsParserState.Broken)
            {
                return;
            }
            Debug.Assert(stateObj._attentionSent, "invalid attempt to ProcessAttention, attentionSent == false!");

            // Attention processing scenarios:
            // 1) EOM packet with header ST_AACK bit plus DONE with status DONE_ATTN
            // 2) Packet without ST_AACK header bit but has DONE with status DONE_ATTN
            // 3) Secondary timeout occurs while reading, break connection

            // Since errors can occur and we need to cancel prior to throwing those errors, we
            // cache away error state and then process TDS for the attention.  We restore those
            // errors after processing.
            stateObj.StoreErrorAndWarningForAttention();

            try
            {
                // Call run loop to process looking for attention ack.
                Run(RunBehavior.Attention, null, null, null, stateObj);
            }
            catch (Exception e)
            {
                if (!ADP.IsCatchableExceptionType(e))
                {
                    throw;
                }

                // If an exception occurs - break the connection.
                // Attention error will not be thrown in this case by Run(), but other failures may.
                _state = TdsParserState.Broken;
                _connHandler.BreakConnection();

                throw;
            }

            stateObj.RestoreErrorAndWarningAfterAttention();

            Debug.Assert(!stateObj._attentionSent, "Invalid attentionSent state at end of ProcessAttention");
        }