public UInt16 Decode_confirmed_Service_Request(ref Byte[] apdu, UInt16 apdu_len, ref BACNET_CONFIRMED_SERVICE_DATA service_data, ref Byte service_choice,
ref UInt16 service_requst_len, int pos)
{
UInt16 len = 0; /* counts where we are in PDU */
service_data.segmented_message = (apdu[0 + pos] & 0x08) != 0 ? true : false;
service_data.more_follows = (apdu[0] & 0x04) != 0 ? true : false;
service_data.segmented_response_accepted =
(apdu[pos] & 0x02) != 0 ? true : false;
service_data.max_segs = BasicalProcessor.Decode_Max_Segs(ref apdu, pos + 1);
service_data.max_resp = BasicalProcessor.Decode_Max_Apdu(ref apdu, pos + 1);
service_data.invoke_id = apdu[pos + 2];
len = 3;
if (service_data.segmented_message)
{
service_data.sequence_number = apdu[pos + len++];
service_data.proposed_window_number = apdu[pos + len++];
}
service_choice = apdu[pos + len++];
;
service_requst_len = (UInt16)(apdu_len - len);
return(len);
}