// 消息编码
public override void Encode(System.Object packageObj)
{
NetPackage package = (NetPackage)packageObj;
if (package == null)
{
Channel.HandleError(false, $"The package object is invalid : {packageObj.GetType()}");
return;
}
// 检测逻辑是否合法
if (package.IsHotfixPackage)
{
if (package.BodyBytes == null)
{
Channel.HandleError(false, $"The package BodyBytes field is null : {packageObj.GetType()}");
return;
}
}
else
{
if (package.MsgObj == null)
{
Channel.HandleError(false, $"The package MsgObj field is null : {packageObj.GetType()}");
return;
}
}
// 获取包体数据
byte[] bodyData;
if (package.IsHotfixPackage)
{
bodyData = package.BodyBytes;
}
else
{
bodyData = EncodeInternal(package.MsgObj);
}
// 检测包体长度
if (bodyData.Length > NetworkDefine.PackageBodyMaxSize)
{
Channel.HandleError(false, $"The package {package.MsgID} body size is larger than NetworkDefine.PackageBodyMaxSize");
return;
}
// 写入长度
int packetSize = (int)MessageIDFieldType + bodyData.Length;
if (PackageSizeFieldType == EPackageSizeFieldType.UShort)
{
// 检测是否越界
if (packetSize > ushort.MaxValue)
{
Channel.HandleError(true, $"The package {package.MsgID} size is larger than ushort.MaxValue.");
return;
}
_sendBuffer.WriteUShort((ushort)packetSize);
}
else
{
_sendBuffer.WriteInt(packetSize);
}
// 写入包头
{
// 写入消息ID
if (MessageIDFieldType == EMessageIDFieldType.UShort)
{
// 检测是否越界
if (package.MsgID > ushort.MaxValue)
{
Channel.HandleError(true, $"The package {package.MsgID} ID is larger than ushort.MaxValue");
return;
}
_sendBuffer.WriteUShort((ushort)package.MsgID);
}
else
{
_sendBuffer.WriteInt(package.MsgID);
}
}
// 写入包体
_sendBuffer.WriteBytes(bodyData, 0, bodyData.Length);
}
// 消息解码
public override void Decode(List <System.Object> packageObjList)
{
// 循环解包
while (true)
{
// 如果数据不够一个SIZE
if (_receiveBuffer.ReadableBytes() < (int)PackageSizeFieldType)
{
break;
}
_receiveBuffer.MarkReaderIndex();
// 读取Package长度
int packageSize;
if (PackageSizeFieldType == EPackageSizeFieldType.UShort)
{
packageSize = _receiveBuffer.ReadUShort();
}
else
{
packageSize = _receiveBuffer.ReadInt();
}
// 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
}
NetPackage package = new NetPackage();
// 读取包头
{
// 读取消息ID
if (MessageIDFieldType == EMessageIDFieldType.UShort)
{
package.MsgID = _receiveBuffer.ReadUShort();
}
else
{
package.MsgID = _receiveBuffer.ReadInt();
}
}
// 检测包体长度
int bodySize = packageSize - (int)MessageIDFieldType;
if (bodySize > NetworkDefine.PackageBodyMaxSize)
{
Channel.HandleError(true, $"The package {package.MsgID} size is larger than NetworkDefine.PackageBodyMaxSize");
break;
}
// 正常解包
try
{
// 读取包体
byte[] bodyData = _receiveBuffer.ReadBytes(bodySize);
Type classType = NetMessageHandler.TryHandle(package.MsgID);
if (classType != null)
{
// 非热更协议
package.MsgObj = DecodeInternal(classType, bodyData);
if (package.MsgObj != null)
{
packageObjList.Add(package);
}
}
else
{
// 热更协议
package.IsHotfixPackage = true;
package.BodyBytes = bodyData;
packageObjList.Add(package);
}
}
catch (Exception ex)
{
// 解包异常后继续解包
Channel.HandleError(false, $"The package {package.MsgID} decode error : {ex.ToString()}");
}
} //while end
// 注意：将剩余数据移至起始
_receiveBuffer.DiscardReadBytes();
}
