/// <summary> Writes all queued <see cref="Packet"/> objects in the <see cref="sendPackets"/> queue to the network. </summary>
private void WriteSubWork()
{
while (sendPackets.Count > 0)
{
Tuple <Packet, object> packetWithObject = null;
if (!sendPackets.TryDequeue(out packetWithObject))
{
continue;
}
Packet packet = packetWithObject.Item1;
//Insert the ID into the packet if it is an request packet.
if (packet.GetType().IsSubclassOf(typeof(RequestPacket)) && packetWithObject.Item2 != null)
{
packet.ID = packetHandlerMap[requestResponseMap[packet.GetType()], packetWithObject.Item2];
}
//Prepare some data in the packet.
packet.BeforeSend();
/* Packet structure:
* 1. [16bits] packet type
* 2. [32bits] packet length 包内容长度，不包括1和2
* 3. [xxbits] packet data */
//if (packet.ID)
//{
//}
byte[] packetData = packetConverter.GetBytes(packet);
byte[] packetLength = BitConverter.GetBytes(packetData.Length); //包 内容的长度
byte[] packetByte = new byte[2 + packetLength.Length + packetData.Length]; //总长度byte表示,包括包头，包长，包内容
packetByte[0] = (byte)(typeByte[packet.GetType()]); //pack type
packetByte[1] = (byte)(typeByte[packet.GetType()] >> 8); //pack type
Array.Copy(packetLength, 0, packetByte, 2, packetLength.Length); //包长度 控制字符
Array.Copy(packetData, 0, packetByte, 2 + packetLength.Length, packetData.Length); //包内容
WriteBytes(packetByte);
Logger.LogOutgoingPacket(packetData, packet);
}
}
internal static byte[] GetBytesWrap <T>(this IPacketConverter <T> converter, T value)
{
try
{
var buf = converter.GetBytes(value);
if (buf == null)
{
buf = s_empty_bytes;
}
var len = converter.Length;
if (len > 0 && len != buf.Length)
{
throw PacketException.ConvertMismatch(len);
}
return(buf);
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
}