private static async Task ManyAcceptConnections(CancellationToken token)
{
while (!token.IsCancellationRequested)
{
try
{
var client = await ManyListener.AcceptTcpClientAsync();
Logger.Warn($"设备已连接,IP:{client.Client.RemoteEndPoint}");
var md = new ManyMetadata(client);
ManyClients.TryAdd(client.Client.RemoteEndPoint.ToString(), md);
#pragma warning disable 4014
Task.Run(() => ManyDataReceiver(md), md.Token);
#pragma warning restore 4014
}
catch (Exception e)
{
Logger.Error(e);
throw;
}
}
}
private static async Task ManyDataReceiver(ManyMetadata md)
{
var header = "[" + md.TcpClient.Client.RemoteEndPoint.ToString() + "]";
$"{header} many data receiver started".Info();
try
{
while (true)
{
if (!IsClientConnected(md.TcpClient))
{
Logger.Error(header + $" client no longer connected[{md.LinkId}]");
break;
}
if (Token.IsCancellationRequested)
{
//if (isDebug)
Logger.Info(header + " cancellation requested");
break;
}
var data = await DataReadAsync(md.TcpClient, Token);
if (data == null || data.Length < 1)
{
Thread.Sleep(100);
continue;
}
var length = data.Length;
var linkId = 0;
var policy = new CacheItemPolicy
{
AbsoluteExpiration = DateTime.Now.AddMinutes(10)
};
switch (data.Length)
{
case 3:
linkId = data[2];
lock (ClientInfo.locker)
{
ClientInfo.cache.Set("many", "", policy);
}
switch (data[1])
{
case 0xC7:
$"收到连接[3][{ManyClients.Count}][{linkId}]注册包".Info();
md.LinkId = linkId;
var policy1 = new CacheItemPolicy
{
AbsoluteExpiration = DateTime.Now.AddSeconds(30 * 3)
};
lock (ClientInfo.locker)
{
ClientInfo.cache.Set(linkId.ToString(), "", policy1);
}
break;
case 0xC8:
//if (isDebug)
{
Logger.Info($"收到连接[3][{ManyClients.Count}][{linkId}]心跳包");
}
md.LinkId = linkId;
var policy2 = new CacheItemPolicy
{
AbsoluteExpiration = DateTime.Now.AddSeconds(30 * 3)
};
lock (ClientInfo.locker)
{
ClientInfo.cache.Set(linkId.ToString(), "", policy2);
}
break;
}
break;
case 4:
var linkIdHigh = data[2];
var linkIdLow = data[3];
linkId = (linkIdHigh << 8) | (linkIdLow);
lock (ClientInfo.locker)
{
ClientInfo.cache.Set("many", "", policy);
}
switch (data[1])
{
case 0xC7:
$"收到连接[4][{ManyClients.Count}][{linkId}]注册包".Info();
md.LinkId = linkId;
var policy1 = new CacheItemPolicy
{
AbsoluteExpiration = DateTime.Now.AddSeconds(30 * 3)
};
lock (ClientInfo.locker)
{
ClientInfo.cache.Set(linkId.ToString(), "", policy1);
}
break;
case 0xC8:
//if (isDebug)
Logger.Info($"收到连接[4][{ManyClients.Count}][{linkId}]心跳包");
md.LinkId = linkId;
var policy2 = new CacheItemPolicy
{
AbsoluteExpiration = DateTime.Now.AddSeconds(30 * 3)
};
lock (ClientInfo.locker)
{
ClientInfo.cache.Set(linkId.ToString(), "", policy2);
}
break;
}
break;
default:
if (length <= 5)
{
continue;
}
Logger.Info($"[M][{md.TcpClient.Client.RemoteEndPoint}]:{BytesToHexString(data)}");
var crc32 = data.Take(length - 2).ToArray().CRC16();
if (data[length - 2] == crc32[1] && data[length - 1] == crc32[0])
{
if (useLinkId)
{
if (md.TcpClient.Client.RemoteEndPoint.ToString() == ClientInfo.IpAddress)
{
var dt = new DateTime();
lock (ClientInfo.locker)
{
dt = ClientInfo.RequestTime;
}
var ts = DateTime.Now - dt;
if (ts.TotalMilliseconds < modbusTimeout + 500)
{
lock (ClientInfo.locker)
{
if (!isUseStrictCheckMode || (ClientInfo.ExpectedType == data[1] && ClientInfo.ExpectedDataLen == data[2]))
{
OneQueue.Enqueue(data.Take(data.Length).ToArray());
$"[M->1]{header}:{ BytesToHexString(data)}".Info();
}
else
{
Logger.Warn($"[M->1] [{ClientInfo.ExpectedType}][{ClientInfo.ExpectedDataLen}],{BytesToHexString(data)}");
}
}
}
else
{
Logger.Warn($"TimeOut[{ts.TotalMilliseconds}][M->1] [{ClientInfo.ExpectedType}][{ClientInfo.ExpectedDataLen}],{BytesToHexString(data)}");
}
}
else
{
var dt = new DateTime();
lock (ClientInfo.locker)
{
dt = ClientInfo.RequestTime;
}
var ts = DateTime.Now - dt;
if (ts.TotalMilliseconds < modbusTimeout)
{
//Logger.Error($"[M->?][{md.TcpClient.Client.RemoteEndPoint}] :[{ ClientInfo.ManyIpAddress}]");
//$"[M->?]{header}:{ BytesToHexString(data)}".Info();
}
else
{
//Logger.Error("[M->?] timeout!");
}
}
}
else
{
OneQueue.Enqueue(data.Take(data.Length).ToArray());
$"[M->1]{header}: { BytesToHexString(data)}".Info();
}
}
else
{
Logger.Error($"CRC Error:{crc32[1]}:{crc32[0]}");
}
break;
}
}
}
catch (Exception e)
{
Logger.Error(
Environment.NewLine +
header +
" ManyDataReceiver Exception: " +
Environment.NewLine +
e.ToString() +
Environment.NewLine +
e.StackTrace
);
}
//if (isDebug)
Logger.Info(header + " data receiver terminating");
ManyClients.TryRemove(md.TcpClient.Client.RemoteEndPoint.ToString(), out _);
md.Dispose();
}