private void PrepareBroadcastFrame(byte[] msg)
{
curBroadcastSeqNum++;
// Some testing cases
//System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
//msg = encoding.GetBytes(@"what is the problem of you?");
//payloadSizeUDP = 2;
int pktPayloadSize = payloadSizeUDP;
int numPkt = (int)Math.Ceiling((double)msg.Length / pktPayloadSize);
curBroadcastFrame = new List<byte[]>(numPkt);
curFrameLastPktSize = msg.Length - (numPkt - 1) * payloadSizeUDP;
int seqNum;
for (seqNum = 0; seqNum < numPkt; seqNum++)
{
byte[] curMsg;
if (seqNum < numPkt - 1)
{
curMsg = msg.Skip(seqNum * pktPayloadSize).Take(pktPayloadSize).ToArray();
}
else
{
curMsg = msg.Skip(seqNum * pktPayloadSize).Take(msg.Length - seqNum * pktPayloadSize).ToArray();
}
BroadcastContentPar par = new BroadcastContentPar();
par.frameNum = curBroadcastSeqNum;
par.seqNum = seqNum;
byte[] newMsg = msgParser.getBroadcastCotentMsg(ref par, curMsg);
curBroadcastFrame.Add(newMsg);
}
}
public byte[] getBroadcastCotentMsg(ref BroadcastContentPar par, byte[] data)
{
byte[] parBytes = new byte[POIMsgDefinition.POI_MAXPARAMETERSSIZE];
int offset = 0;
serializeInt32(parBytes, ref offset, par.frameNum);
serializeInt32(parBytes, ref offset, par.seqNum);
parBytes = parBytes.Take(offset).ToArray();
return composePacket(POIMsgDefinition.POI_BROADCASTCONTENT, parBytes, data);
}
