NO_SLOTS

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1

Imported from previous forum

2

One small question about slots in fast-fix, how come I have to set NO_SLOTS to 14, not 11 to make this code work (just modified encoder sample). I must have missed some major idea behind this. If I set it to 13 i get index out of bounds when EndodeEngMsg,
I am just trying to se how efficient fast is.

using System;
using System.IO;
using System.Collections;
using System.Text;
using FAST;

namespace Encoder
{
class Program
{
private const int NO_TEMPLATES = 1;
private const int NO_SLOTS = 14;

    /// <summary>
    /// Test template identifiers
    /// </summary>
    enum tids
    {
       Base = 0,
    };

    /// <summary>
    /// Test field definitions
    /// </summary>
    enum fields
    {
       TID = 0,
       SeqNum = 1,
       SecurityExchange = 2,
       ExecutionVenue = 3,
       Currency = 4,
       Symbol = 5,
       Bid = 6,
       Ask = 7,
       Time = 8
    };

    static void Main(string[] args)
    {
        try
        {
           
            FileStream FS = new FileStream("example.txt", FileMode.Create);
            BinaryWriter BW = new BinaryWriter(FS);

            CTransferEncoder TransferEncoder = new CTransferEncoder(BW, NO_SLOTS);
            CCODEC Codec = new CCODEC(TransferEncoder, NO_TEMPLATES, NO_SLOTS);


 

            Codec.AddFieldDef((int)fields.TID, CFieldDef.type.U32, CFieldDef.op.Copy, (int) tids.Base, 0);
            Codec.AddFieldDef((int)fields.SeqNum, CFieldDef.type.U32, CFieldDef.op.Incr, (int) tids.Base, 1);

            Codec.AddFieldDef((int)fields.SecurityExchange, CFieldDef.type.String, CFieldDef.op.Copy, (int)tids.Base, 2);
            Codec.AddFieldDef((int)fields.ExecutionVenue, CFieldDef.type.String, CFieldDef.op.Copy, (int)tids.Base, 3);
            Codec.AddFieldDef((int)fields.Currency, CFieldDef.type.String, CFieldDef.op.Copy, (int)tids.Base, 4);
            Codec.AddFieldDef((int)fields.Symbol, CFieldDef.type.String, CFieldDef.op.Copy, (int)tids.Base, 5);
            Codec.AddFieldDef((int)fields.Bid, CFieldDef.type.U32, CFieldDef.op.Copy, (int)tids.Base, 6);
            Codec.AddFieldDef((int)fields.Ask, CFieldDef.type.U32, CFieldDef.op.Copy, (int)tids.Base, 7);
           
            Codec.AddFieldDef((int)fields.Time, CFieldDef.type.U32, CFieldDef.op.Copy, (int)tids.Base, 8);


          // encode one message

                    // Encode the data, we always start off with a template ID
                    Codec.EncodeNewMsg((uint)fields.TID);

                    // Always start off with a template ID
                    Codec.EncodeU32((int)fields.TID, (uint) 1);
                    Codec.EncodeU32((int)fields.SeqNum, 1);
                    Codec.EncodeString((int)fields.SecurityExchange,"XSTO");
                    Codec.EncodeString((int)fields.ExecutionVenue, "CHIX");
                    Codec.EncodeString((int)fields.Currency, "SEK");
                    Codec.EncodeString((int)fields.Symbol, "ERIC B");
                    Codec.EncodeU32((int)fields.Bid, 1);
                    Codec.EncodeU32((int)fields.Ask, 10010);
                    Codec.EncodeU32((int)fields.Time, 101010);
                    // we are done with this message
                    Codec.EncodeEndMsg();
                

            BW.Close();
        }
        catch (Exception E)
        {
            System.Console.WriteLine(E.Message);
            System.Threading.Thread.Sleep(10000);
        }
    }
}

}