private void OnRecveTimeOut_Tick(object sender, EventArgs e)
{
if (!Working)
{
return;
}
ClarifyInfo($"已超过[{ReceiveTimeOut.ToString()}]没有收到数据，断开连接。", 1);
Disconnect();
}
/// <summary>
/// 数据接收线程
/// 以轮询方式接收字节流。
/// </summary>
private void ReceiveThread()
{
try
{
ClarifyInfo(string.Format("连接[{0}:{1}]的工作线程开始工作……", m_RemoteHost, m_RemotePort), 1);
// 通讯协议进入预备状态
if (_Protocol != null)
{
_Protocol.Start();
}
byte[] aByteBuffer = new byte[ReceiveBufferLength];
// 接收数据，将收到的数据片通知通讯协议处理。
Stopwatch aReceiveStopwatch = new Stopwatch();
Stopwatch aHeartBeatStopwatch = new Stopwatch();
aReceiveStopwatch.Start();
aHeartBeatStopwatch.Start();
while (Working)
{
try
{
if (_NetworkStream.DataAvailable)
{
// 以字节块为单位接收数据
int aReadBytesCount = _NetworkStream.Read(aByteBuffer, 0, aByteBuffer.Length);
if (aReadBytesCount > 0)
{
byte[] aCopy = new byte[aReadBytesCount];
System.Array.Copy(aByteBuffer, aCopy, aReadBytesCount);
// 通知收到数据
ClarifyBytesReceived(aCopy);
// 协议实例分析数据
if (_Protocol != null)
{
_Protocol.ClarifyReceivedBytes(this, aCopy);
}
}
aReceiveStopwatch = Stopwatch.StartNew();
}
else
{
// 没有数据要接收时，暂时交出控制权，以减少对系统响应的影响。
System.Threading.Thread.Sleep(IdleInterval);
if (ReceiveTimeOut > TimeSpan.Zero && aReceiveStopwatch.Elapsed > ReceiveTimeOut)
{
ClarifyInfo($"已超过[{ReceiveTimeOut.ToString()}]没有收到数据，断开连接。", 1);
Disconnect();
break;
}
else
{
// 发送心跳，检查连接状态
try
{
byte[] aBytes = _Protocol == null ? new byte[0] : _Protocol.HeartBeat();
if (aBytes.Length == 0 || aHeartBeatStopwatch.Elapsed >= HeartBeatInterval)
{
_TcpClient.Client.Send(aBytes);
aHeartBeatStopwatch = Stopwatch.StartNew();
}
}
catch (Exception ex)
{
ClarifyInfo(string.Format("连接[{0}:{1}]的工作线程发生错误：{2}，断开连接。", m_RemoteHost, m_RemotePort, ex.Message), 0);
Disconnect();
break;
}
}
}
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
catch (Exception ex)
{
ClarifyInfo(ex.Message, 0);
}
}
ClarifyInfo(string.Format("连接[{0}:{1}]的工作线程停止。", m_RemoteHost, m_RemotePort), 1);
}
catch (System.Threading.ThreadAbortException)
{
// 调用ResetAbort来阻止再次引发此异常，令线程正常结束。
ClarifyInfo(string.Format("连接[{0}:{1}]的工作线程被中止……", m_RemoteHost, m_RemotePort), 0);
System.Threading.Thread.ResetAbort();
}
catch (Exception ex)
{
ClarifyInfo(string.Format("连接[{0}:{1}]的工作线程发生错误：{2}", m_RemoteHost, m_RemotePort, ex.Message), 0);
ClarifyInfo(ex.StackTrace, 4);
}
}