/// <summary>
/// 持续接收数据
/// </summary>
public async void ReceiveData()
{
byte[] buffer;
while (IsAlive)
{
if (!_networkStream.DataAvailable)
{
continue;
}
try
{
// 读取封包头
var length = _encryptor.IvLength;
buffer = new byte[length];
if (await _networkStream.ReadAsync(buffer, 0, length) == length)
{
length = MapleCryptograph.GetPacketLength(buffer);
}
// 通过收取到的封包头计算数据长度，如果比缓冲区还长则停止会话
// 如果检测出封包头不满足约束条件，则停止会话
if (length > _client.ReceiveBufferSize || !_decryptor.IsValidHeader(buffer))
{
Dispose();
return;
}
// 读取真正内容
buffer = new byte[length];
if (await _networkStream.ReadAsync(buffer, 0, length) == length)
{
_decryptor.Transform(buffer);
OnDataReceived(this, new DataReceivedEventArgs {
ReceivedData = buffer
});
}
}
catch (Exception e)
{
Debug.WriteLine($"会话：读取数据出错，错误信息 {e.Message}");
}
}
}
private async void Receive()
{
if (!mNetworkStream.CanRead)
{
this.Close();
return;
}
while (IsAlive)
{
if (!mNetworkStream.DataAvailable)
{
continue;
}
var length = 4;
mBuffer = new byte[length];
if (await mNetworkStream.ReadAsync(mBuffer, 0, length) == length)
{
length = MapleCryptograph.GetPacketLength(mBuffer);
}
if (length > mSocket.ReceiveBufferSize || !mRecvCipher.CheckServerPacket(mBuffer, 0))
{
this.Close();
return;
}
mBuffer = new byte[length];
if (await mNetworkStream.ReadAsync(mBuffer, 0, length) == length)
{
mRecvCipher.Transform(mBuffer);
Dispatch(mBuffer);
}
}
}
