// Token: 0x06006B13 RID: 27411 RVA: 0x001E0934 File Offset: 0x001DEB34
public static object DecodeMessage(MessageBlock recvBuffer, IProtoProvider protoProvider, out int msgId, Func <Stream, Type, int, object> deserializeMessageAction = null)
{
int num = 4;
msgId = 0;
if (recvBuffer.Length < num)
{
return(null);
}
ushort num2 = recvBuffer.ReadUInt16();
if ((int)num2 < num)
{
throw new ProtoException(string.Format("Hack stream, TotalLength={0}", num2));
}
int num3 = (int)num2 - num;
if (recvBuffer.Length < num3 + 2)
{
recvBuffer.ReadPtr(-2);
return(null);
}
ushort num4 = recvBuffer.ReadUInt16();
bool flag = num4 >> 15 == 1;
ushort num5 = num4 & 32767;
msgId = (int)num5;
Type typeById = protoProvider.GetTypeById((int)num5);
object result;
try
{
if (flag)
{
using (MemoryStream readStream = recvBuffer.GetReadStream(num3))
{
byte[] array = QuickLZ.decompress(readStream.ToArray());
int count = array.Length;
using (MemoryStream memoryStream = new MemoryStream(array, 0, count))
{
if (deserializeMessageAction != null)
{
result = deserializeMessageAction(memoryStream, typeById, msgId);
}
else
{
result = RuntimeTypeModel.Default.Deserialize(memoryStream, null, typeById, null);
}
}
}
}
else
{
using (MemoryStream readStream2 = recvBuffer.GetReadStream(num3))
{
if (deserializeMessageAction != null)
{
result = deserializeMessageAction(readStream2, typeById, msgId);
}
else
{
result = RuntimeTypeModel.Default.Deserialize(readStream2, null, typeById, null);
}
}
}
}
catch (Exception innerException)
{
throw new Exception(string.Format("msgId={0}, isCompressed={1} pakBodyLength={2}", msgId, flag, num3), innerException);
}
return(result);
}
/// <summary>
/// Decodes the message.
/// </summary>
/// <returns>The message.</returns>
/// <param name="dataBlock">Data block.</param>
/// <param name="dataOffset">Data offset.</param>
/// <param name="dataLen">Data length.</param>
/// <param name="newMsg">New message.</param>
/// <returns>
/// != null : A protocol message
/// == null : No full message exist
/// Exception : ProtoException to indicate HACK stream
/// </returns>
public static Object DecodeMessage(MessageBlock rCache, IProtoProvider protoProvider, out int msgId)
{
msgId = 0;
// get the message head's length
int headLength = sizeof(ushort) * 2;
// Not enough data for header
if (rCache.Length < headLength)
{
//Debug.WriteLine(String.Format("DecodeMessage Not enough data for header. rCache.Length={0} < headLength={1}", rCache.Length, headLength));
return(null);
}
// get message length
ushort pakFullLength = rCache.ReadUInt16();
// Bad stream
if (pakFullLength < headLength)
{
throw new ProtoException(string.Format("Hack stream, TotalLength={0}", pakFullLength));
}
int pakBodyLength = pakFullLength - headLength;
//Debug.WriteLine(String.Format("DecodeMessage Before rCache.Length={0} pakBodyLength={1} ", rCache.Length, pakBodyLength));
// Not enough data for body
// ע��������Ҫ���Ǻ���һ����ͷ�ij���
if (rCache.Length < pakBodyLength + sizeof(ushort))
{
// Move read ptr to back
// �˴�ֻ������UInt16���ȵ����ݣ����Իع���Ҫһ�£�����ʹ��headLength
rCache.ReadPtr(-(sizeof(ushort)));
//Debug.WriteLine(String.Format("DecodeMessage Not enough data for body rCache.Length={0} < pakBodyLength={1}", rCache.Length, pakBodyLength));
return(null);
}
// get message id field
ushort pakMessageIdField = rCache.ReadUInt16();
// get compressed tag
bool isCompressed = pakMessageIdField >> (sizeof(ushort) * 8 - 1) == 1;
// get the protocol id
msgId = (ushort)(pakMessageIdField & 0x7FFF);
// deserialize message, we should decompress message body data if needed
Type pakType = protoProvider.GetTypeById(msgId);
// Use ProtoBuf to deserialize message
object ccMsg = Activator.CreateInstance(pakType);
//Debug.WriteLine(String.Format("DecodeMessage msgId={0} pakBodyLength={1} isCompressed={2} pakType={3}", msgId, pakBodyLength, isCompressed, pakType.ToString()));
try
{
using (MemoryStream readStream = rCache.GetStream(pakBodyLength))
{
//����Ϣ���л����������ṩ�����л����������л��ͷ����л�
//Debug.WriteLine(String.Format("DecodeMessage readStream={0}", printByteArray(readStream.ToArray())));
//RuntimeTypeModel.Default.Deserialize(readStream, ccMsg, pakType);
}
}
catch (Exception ex)
{
throw new Exception(string.Format("msgId={0}, isCompressed={1} pakBodyLength={2}",
msgId, isCompressed, pakBodyLength), ex);
}
//Debug.WriteLine(String.Format("DecodeMessage rCacheInfo Length={0} WrPtr={1} RdPtr={2}", rCache.Length, rCache.WrPtr, rCache.RdPtr));
return(ccMsg);
}
