private void ReceiveCallback(IAsyncResult ar)
{
try
{
// Retrieve the state object and the client socket
// from the asynchronous state object.
Packet packetObj = (Packet)ar.AsyncState;
Socket client = packetObj.workSocket;
// Read data from the remote device.
int bytesRead = client.EndReceive(ar);
if (bytesRead > 0)
{
if (!packetObj.isCorrectPack)
{
PacketBuilder.UnPackParam(packetObj.buffer, out var crc, out var dataLen, out var category, out var command);
if (crc == PacketBuilder.crcCode)
{
packetObj.SetFirstReceive(dataLen, category, command);
}
else
{
//如果CRC不對就不動作(先不關閉)
Program.mainUI.OnShowSystemLog("CRC check fail");
throw new Exception();
}
}
//將收到的封包複製到infoBytes，從最後收到的位置
Array.Copy(packetObj.buffer, 0, packetObj.infoBytes, packetObj.LastReceivedPos, bytesRead);
//減去已收到的封包數
//接收完後更新對應的LastReceivedPos
packetObj.SetContiuneReceive(bytesRead);
if (packetObj.ReceiveLen == 0)
{
//傳送資料給對應的Command，扣掉前面的CRC,DataLen,Command
var pack = packetObj.infoBytes.Skip(PacketBuilder.VerificationLen).ToArray();
Program.mainUI.OnShowSystemLog($"SystemCategory={packetObj.SystemCategory}, SystemCommand={packetObj.SystemCommand}");
if (_SystemDict.TryGetValue(packetObj.SystemCategory, out var baseClientSystem))
{
baseClientSystem.PlayerEnter(packetObj.SystemCommand, pack);
}
else
{
Program.mainUI.OnShowSystemLog("Not mapping function.");
}
//接收完成
receiveDone.Set();
//開始接收新的封包
Receive();
receiveDone.WaitOne();
}
else
{
client.BeginReceive(packetObj.buffer, 0, Packet.BufferSize, 0,
new AsyncCallback(ReceiveCallback), packetObj);
}
}
}
catch (Exception e)
{
Program.mainUI.OnShowSystemLog(e.ToString());
}
}
