void CConnection::HandleIoComplete( AsynIoResult * result )
{
AsynIoDevice * device = result->GetAsynDevice();
assert(device);
assert(m_pHandler);
DWORD dwError = result->GetErrorCode();
if ( result->Success() )
{
switch(result->GetType())
{
case ASYN_IO_ACCEPT: // Incoming Connection
{
AsynStreamSocketAcceptResult * pAcceptResult = (AsynStreamSocketAcceptResult *)result;
AsynIoDevice * incomingDevice = pAcceptResult->GetIncomingSocket();
assert(incomingDevice);
CConnection * incoming = this->Clone();
incoming->m_bIsPassive = true;
int nRemoteAddrLen = 0;
incoming->SetSocketDevice(incomingDevice);
pAcceptResult->GetRemoteAddr(incoming->m_RemoteAddr,nRemoteAddrLen);
// 继续accept下一个
device->Acceptor()->accept(this);
//crr 出于线程安全放到执行CallBack的线程中去DeleteAsynIoResult
// 删除result
//device->DeleteAsynIoResult(result);
// 通知应用层
CallbackDispatcher::getInstance().RequestCallback(new Callback_Accept(this,incoming,result));
break;
}
case ASYN_IO_CONNECT: // Connect OK
RecvNextPackage();
// 删除result
//device->DeleteAsynIoResult(result);
// 通知应用层
CallbackDispatcher::getInstance().RequestCallback(new Callback_Connect(this,result));
break;
case ASYN_IO_READ: // Data Recieve
{
AsynIoBuffer * pBuffer = result->GetBufferList();
assert(pBuffer && result->GetBufferCount()==1);
LPVOID pData = pBuffer->buf;
DWORD dwTransferedBytes = result->GetTransferredBytes();
if (dwTransferedBytes>0)
{
result->SetBuffer(0,0); // Detach The Buff
//crr mod,默认采用的SimplePacker 会在开头两个字节记录本次发送数据的大小
//检查包接收是否完整，注意：有可能存在连包情况
//上一次接收到的包的开头部分
dwTransferedBytes += result->GetLastRecievedLen();
WORD wCurPacketSize = 0;
DWORD dwRestDataLen = dwTransferedBytes;
char* pCurPacket = (char*)pData;
while (true)
{
if (dwRestDataLen < sizeof WORD)
{
//ErrorLn("包未接收完整 未接受simple packer的头2个字节");
break;
}
wCurPacketSize = *(WORD*)pCurPacket + sizeof WORD;
if (dwRestDataLen < wCurPacketSize)
{
//ErrorLn("包未接收完整 大小< " << wCurPacketSize);
break;
}
pCurPacket = pCurPacket + wCurPacketSize;
dwRestDataLen -= wCurPacketSize;
if (0 == dwRestDataLen)
{
break;
}
}
if (dwRestDataLen == 0)
{
//单个包或多个连着的包接收完整
// 收下一个包
RecvNextPackage();
// 删除result
//device->DeleteAsynIoResult(result);
// 通知应用层
CallbackDispatcher::getInstance().RequestCallback(new Callback_Recv(this,pData,dwTransferedBytes, result));
}
else
{
//最后一个包未接收完整
// 把这个包接收完整
RecvThisPackageRestData((LPVOID)pCurPacket, dwRestDataLen,wCurPacketSize);
// 删除result
//device->DeleteAsynIoResult(result);
// 通知应用层
CallbackDispatcher::getInstance().RequestCallback(new Callback_Recv(this,pData,dwTransferedBytes - dwRestDataLen,result));
}
}else
{
// 删除result
//device->DeleteAsynIoResult(result);
// 通知应用层
CallbackDispatcher::getInstance().RequestCallback(new Callback_TCP_Error(this,WSAECONNRESET, result));
}
}
break;
case ASYN_IO_WRITE: // Send OK
// 删除result
device->DeleteAsynIoResult(result);
break;
case ASYN_IO_CLOSE:
//crr 这里释放掉connection后，那些Callback 中引用到本this会出错
device->DeleteAsynIoResult(result);
//CallbackDispatcher::getInstance().RequestCallback(new Callback_Release(this,WSAECONNRESET));
//ReleaseAux();
break;
default:
// 删除result
device->DeleteAsynIoResult(result);
break;
}
}else
{
// 投递出错信息
// 删除result
//device->DeleteAsynIoResult(result);
CallbackDispatcher::getInstance().RequestCallback(new Callback_TCP_Error(this,dwError, result));
}
// 删除result(不能在这里删,要提前删,因为callback后该连接可能已经delete了)
// device->DeleteAsynIoResult(result);
}
