private bool readBody(byte[] data, int offset, int limit)
{
int length = limit - offset;
if (length >= (buffer.Length - bufferOffset))
{
Array.Copy(data, offset, buffer, bufferOffset, buffer.Length - bufferOffset);
offset += (buffer.Length - bufferOffset);
// 处理message
this.bufferOffset = 0;
this.headOffset = 0;
this.packetHead = 0;
rcvPacketCallback.Invoke(buffer);
this.inboundState = InboundState.readHead;
if (offset <= limit)
{
processBytes(data, offset, limit);
}
return(true);
}
else
{
Array.Copy(data, offset, buffer, bufferOffset, limit - offset);
bufferOffset += (limit - offset);
return(false);
}
}
private bool readPacketLength(byte[] data, int offset, int limit)
{
if (limit <= offset)
{
return(false);
}
for (; ;)
{
byte dataIndex = data[offset];
offset++;
headBuffer[headOffset] = dataIndex;
headOffset++;
if ((dataIndex & 128) != 0)
{
if (headOffset >= MAX_PACKET_LENGTH_SIZE)
{
throw new PacketException("Invalid input stream");
}
if (limit <= offset)
{
break;
}
}
else
{
UInt32 rLength = 0;
int multiplier = 0;
int headIndex = 0;
while (headIndex <= headOffset)
{
byte val = headBuffer[headIndex];
rLength |= ((UInt32)(val & 127)) << multiplier;
headIndex++;
if ((val & 128) == 0)
{
break;
}
multiplier += 7;
}
buffer = new byte[rLength + 1 + headIndex];
buffer[0] = this.packetHead;
Array.Copy(headBuffer, 0, buffer, 1, headIndex);
bufferOffset = 1 + headIndex;
this.inboundState = InboundState.readBody;
if (offset <= limit)
{
processBytes(data, offset, limit);
}
return(true);
}
}
return(false);
}
/**
*
*/
private bool readHead(byte[] data, int offset, int limit)
{
int length = limit - offset;
if (length > 0)
{
this.packetHead = data[0];
this.inboundState = InboundState.readLength;
offset++;
if (limit > offset)
{
processBytes(data, offset, limit);
}
return(true);
}
return(false);
}
public PacketBoundHandler(ITransport tranport, Action <byte[]> rcvCallback)
{
this.tranport = tranport;
this.inboundState = InboundState.readHead;
this.rcvPacketCallback = rcvCallback;
}
public void Dispose()
{
this.inboundState = InboundState.closed;
}
