//合并分段
private void MergeSegment(byte[] buff, UInt32 buffindex, UInt32 PacketLength)
{
const UInt16 CommnadSize = 2; //命令大小
const UInt16 ConnectSize = 12; //连接大小
const UInt16 DataidSize = 4; //数据块编号大小
const UInt16 DataLengthSize = 4; //数据块长度大小
const UInt16 DataOffsetSize = 4; //数据块偏移大小
const UInt16 PacketHead = CommnadSize + ConnectSize + DataidSize + DataLengthSize + DataOffsetSize;
UInt32 segmentlength;
int command = buff[buffindex] + (buff[buffindex + 1] << 8);
if (command != (int)COMMAND_ID.COMMAND_PACKET)
{
ParseData(buff, buffindex, PacketLength);
}
else
{
UInt32 datalength = BitConverter.ToUInt32(buff, (int) buffindex + CommnadSize + ConnectSize + DataidSize); //总数据块大小
if (PacketLength == datalength + PacketHead) //未分段
ParseData(buff, buffindex, PacketLength);
else
{
UInt16 sourserverid = BitConverter.ToUInt16(buff, (int)buffindex + CommnadSize);
UInt16 sourappid = BitConverter.ToUInt16(buff, (int)buffindex + CommnadSize + 4);
UInt32 dataid = BitConverter.ToUInt32(buff, (int)buffindex + CommnadSize + 12);
PacketKey key = new PacketKey() { serverid = sourserverid, appid = sourappid, dataid = dataid };
UInt32 offset = BitConverter.ToUInt32(buff, (int)buffindex + CommnadSize + ConnectSize + DataidSize + DataLengthSize);
if(!bigsegmentbuff.ContainsKey(key))
{
byte[] b = new byte[datalength + PacketHead + 4]; // 前4字节为已接受多少数据
bigsegmentbuff.Add(key, b);
Array.Copy(buff, buffindex, bigsegmentbuff[key], 4, PacketLength);
bigsegmentbuff[key][0] = (byte)(PacketLength);
bigsegmentbuff[key][1] = (byte)(PacketLength >> 8);
bigsegmentbuff[key][2] = (byte)(PacketLength >> 16);
bigsegmentbuff[key][3] = (byte)(PacketLength >> 24);
}
else
{
segmentlength = BitConverter.ToUInt32(bigsegmentbuff[key], 0);
Array.Copy(buff, buffindex + PacketHead, bigsegmentbuff[key], offset + PacketHead + 4, PacketLength - PacketHead);
segmentlength = segmentlength + PacketLength - PacketHead;
bigsegmentbuff[key][0] = (byte)(segmentlength);
bigsegmentbuff[key][1] = (byte)(segmentlength >> 8);
bigsegmentbuff[key][2] = (byte)(segmentlength >> 16);
bigsegmentbuff[key][3] = (byte)(segmentlength >> 24);
}
segmentlength = BitConverter.ToUInt32(bigsegmentbuff[key], 0);
if (segmentlength == bigsegmentbuff[key].Length - 4) //最后一个段
{
ParseData(bigsegmentbuff[key], 4, segmentlength);
bigsegmentbuff.Remove(key);
}
}
}
}
//合并分段
private void MergeSegment(byte[] buff, UInt32 buffindex, UInt32 PacketLength)
{
const UInt16 CommnadSize = 2; //命令大小
const UInt16 ConnectSize = 12; //连接大小
const UInt16 DataidSize = 4; //数据块编号大小
const UInt16 DataLengthSize = 4; //数据块长度大小
const UInt16 DataOffsetSize = 4; //数据块偏移大小
const UInt16 PacketHead = CommnadSize + ConnectSize + DataidSize + DataLengthSize + DataOffsetSize;
UInt32 segmentlength;
int command = buff[buffindex] + (buff[buffindex + 1] << 8);
if (command != (int)COMMAND_ID.COMMAND_PACKET)
{
ParseData(buff, buffindex, PacketLength);
}
else
{
UInt32 datalength = BitConverter.ToUInt32(buff, (int)buffindex + CommnadSize + ConnectSize + DataidSize); //总数据块大小
if (PacketLength == datalength + PacketHead) //未分段
{
ParseData(buff, buffindex, PacketLength);
}
else
{
UInt16 sourserverid = BitConverter.ToUInt16(buff, (int)buffindex + CommnadSize);
UInt16 sourappid = BitConverter.ToUInt16(buff, (int)buffindex + CommnadSize + 4);
UInt32 dataid = BitConverter.ToUInt32(buff, (int)buffindex + CommnadSize + 12);
PacketKey key = new PacketKey()
{
serverid = sourserverid, appid = sourappid, dataid = dataid
};
UInt32 offset = BitConverter.ToUInt32(buff, (int)buffindex + CommnadSize + ConnectSize + DataidSize + DataLengthSize);
if (!bigsegmentbuff.ContainsKey(key))
{
byte[] b = new byte[datalength + PacketHead + 4]; // 前4字节为已接受多少数据
bigsegmentbuff.Add(key, b);
Array.Copy(buff, buffindex, bigsegmentbuff[key], 4, PacketLength);
bigsegmentbuff[key][0] = (byte)(PacketLength);
bigsegmentbuff[key][1] = (byte)(PacketLength >> 8);
bigsegmentbuff[key][2] = (byte)(PacketLength >> 16);
bigsegmentbuff[key][3] = (byte)(PacketLength >> 24);
}
else
{
segmentlength = BitConverter.ToUInt32(bigsegmentbuff[key], 0);
Array.Copy(buff, buffindex + PacketHead, bigsegmentbuff[key], offset + PacketHead + 4, PacketLength - PacketHead);
segmentlength = segmentlength + PacketLength - PacketHead;
bigsegmentbuff[key][0] = (byte)(segmentlength);
bigsegmentbuff[key][1] = (byte)(segmentlength >> 8);
bigsegmentbuff[key][2] = (byte)(segmentlength >> 16);
bigsegmentbuff[key][3] = (byte)(segmentlength >> 24);
}
segmentlength = BitConverter.ToUInt32(bigsegmentbuff[key], 0);
if (segmentlength == bigsegmentbuff[key].Length - 4) //最后一个段
{
ParseData(bigsegmentbuff[key], 4, segmentlength);
bigsegmentbuff.Remove(key);
}
}
}
}
