/// <summary>
/// 读取并解析数据
/// </summary>
/// <param name="session"></param>
/// <param name="buffer"></param>
/// <param name="consumed"></param>
/// <param name="examined"></param>
/// <returns></returns>
private bool ReaderBuffer(ref ReadOnlySequence <byte> buffer, out SequencePosition consumed, out SequencePosition examined)
{
consumed = buffer.Start;
examined = buffer.End;
var bytesConsumedTotal = 0L;
var maxPackageLength = ClientOption.MaxRequestLength;
var seqReader = new SequenceReader <byte>(buffer);
while (true)
{
mark:
//过滤解析
if (NextReceiveFilter != null)
{
//如果修改了下一个过滤器则使用下一个过滤器
if (NextReceiveFilter.NextReceiveFilter != null)
{
NextReceiveFilter = NextReceiveFilter.NextReceiveFilter;
}
var packageInfo = NextReceiveFilter.Filter(ref seqReader);
var bytesConsumed = seqReader.Consumed;
bytesConsumedTotal += bytesConsumed;
var len = bytesConsumed;
//数据未消费，需要更多的数据
if (len == 0)
{
len = seqReader.Length;
}
if (maxPackageLength > 0 && len > maxPackageLength)
{
LogHelper.Error($"数据长度不能超过{maxPackageLength}个字节");
//直接关闭连接
Close();
return(false);
}
//继续接收
if (packageInfo == null)
{
//如果修下一个过滤器不为BULL切设置了，说明使用了多过滤器，packageInfo返回null表示需要重走过滤器
if (NextReceiveFilter.NextReceiveFilter != null && NextReceiveFilter.NextReceiveFilter != NextReceiveFilter)
{
goto mark;
}
consumed = buffer.GetPosition(bytesConsumedTotal);
return(true);
}
if (!packageInfo.Success)
{
LogHelper.Info(packageInfo.Message);
}
else
{
OnReceived?.Invoke(this, packageInfo);
}
if (seqReader.End) //没有更多数据
{
examined = consumed = buffer.End;
return(true);
}
seqReader = new SequenceReader <byte>(seqReader.Sequence.Slice(bytesConsumed));
}
else
{
examined = consumed = buffer.End;
var packageInfo = new TRequestInfo
{
Success = true,
Raw = buffer.ToArray()
};
OnReceived?.Invoke(this, packageInfo);
return(true);
}
}
}
/// <summary>
/// 读取并解析数据
/// </summary>
/// <param name="session"></param>
/// <param name="buffer"></param>
/// <param name="consumed"></param>
/// <param name="examined"></param>
/// <returns></returns>
private bool ReaderBuffer(ref ReadOnlySequence <byte> buffer, out SequencePosition consumed, out SequencePosition examined, TSession session = default)
{
consumed = buffer.Start;
examined = buffer.End;
var bytesConsumedTotal = 0L;
//最大请求（单位：字节）
var maxPackageLength = ClientOption.MaxRequestLength;
var seqReader = new SequenceReader <byte>(buffer);
while (true)
{
mark:
//过滤解析
if (NextReceiveFilter != null)
{
//有可能切换了过滤器，当前过滤器自定为下一个过滤器
if (NextReceiveFilter.NextReceiveFilter != null)
{
NextReceiveFilter = NextReceiveFilter.NextReceiveFilter;
}
//按用户指定的协议切割一个包
var packageInfo = NextReceiveFilter.Filter(ref seqReader);
var bytesConsumed = seqReader.Consumed;
bytesConsumedTotal += bytesConsumed;
var len = bytesConsumed;
//数据未消费，需要更多的数据
if (len == 0)
{
len = seqReader.Length;
}
if (maxPackageLength > 0 && len > maxPackageLength)
{
LogHelper.Error($"数据长度不能超过{maxPackageLength}个字节");
//直接关闭连接
Close();
return(false);
}
//继续接收
if (packageInfo == null)
{
//如果下一个过滤器不为空，但是有没有收到完整的包，重走过滤器（一般是使用了多过滤器）
if (NextReceiveFilter.NextReceiveFilter != null && NextReceiveFilter.NextReceiveFilter != NextReceiveFilter)
{
goto mark;
}
consumed = buffer.GetPosition(bytesConsumedTotal);
return(true);
}
if (!packageInfo.Success)
{
LogHelper.Error(packageInfo.Message);
}
else
{
OnReceived?.Invoke(session == null ? this : (object)session, packageInfo);
}
if (seqReader.End) //没有更多数据
{
examined = consumed = buffer.End;
return(true);
}
seqReader = new SequenceReader <byte>(seqReader.Sequence.Slice(bytesConsumed));
}
else
{
//没有过滤器来多少数据返回多少数据给用户
examined = consumed = buffer.End;
var packageInfo = new TRequestInfo
{
Success = true,
Raw = buffer.ToArray()
};
OnReceived?.Invoke(session == null ? this : (object)session, packageInfo);
return(true);
}
}
}
