public override void Encode(System.Object msg)
{
NetSendPackage packet = (NetSendPackage)msg;
if (packet.ProtoObj == null)
{
Channel.HandleError(false, $"NetProtoPackageParser encode fatal. Msg type is {packet.Type}");
return;
}
// 获取包体数据
byte[] bodyData = ProtobufHelper.Encode(packet.ProtoObj);
// 写入长度
int packetSize = SEND_PACKAGE_HEAD_SIZE + bodyData.Length;
_sendBuffer.WriteUShort((ushort)packetSize);
// 写入包头
_sendBuffer.WriteUShort(packet.Type);
// 写入包体
_sendBuffer.WriteBytes(bodyData, 0, bodyData.Length);
}
public override void Decode(List <System.Object> msgList)
{
// 循环解包
while (true)
{
// 如果数据不够一个SIZE
if (_receiveBuffer.ReadableBytes() < SIZE_BYTE_COUNT)
{
break;
}
_receiveBuffer.MarkReaderIndex();
// 读取Package长度
ushort packageSize = _receiveBuffer.ReadUShort();
// 如果剩余可读数据小于Package长度
if (_receiveBuffer.ReadableBytes() < packageSize)
{
_receiveBuffer.ResetReaderIndex();
break; //需要退出读够数据再解包
}
// 获取包头信息
NetReceivePackage package = new NetReceivePackage();
package.Type = _receiveBuffer.ReadUShort();
// 如果包体超过最大长度
int bodySize = packageSize - RECEIVE_PACKAGE_HEAD_SIZE;
if (bodySize > NetDefine.PackageMaxSize)
{
Channel.HandleError(true, $"The package {package.Type} size is exceeds max size.");
break;
}
// 获取包体数据
byte[] bodyData = _receiveBuffer.ReadBytes(bodySize);
// 正常解包
try
{
Type classType = NetProtoHandler.TryHandle(package.Type);
if (classType != null)
{
// 非热更协议
package.ProtoObj = ProtobufHelper.Decode(classType, bodyData);
if (package.ProtoObj != null)
{
msgList.Add(package);
}
}
else
{
// 热更协议
package.ProtoBodyData = bodyData;
msgList.Add(package);
}
}
catch (Exception ex)
{
// 解包异常后继续解包
Channel.HandleError(false, $"The package {package.Type} decode error : {ex.ToString()}");
}
} //while end
// 注意：将剩余数据移至起始
_receiveBuffer.DiscardReadBytes();
}