private void SocketAsyncCallBack(IAsyncResult ar)
{
if (ar.AsyncState is AppSession session)
{
try
{
int receiveCount = session.WorkSocket.EndReceive(ar);
ModbusTcpMessage mdMessage = new ModbusTcpMessage( );
OperateResult <byte[]> read1 = ReceiveByMessage(session.WorkSocket, 5000, mdMessage);
if (!read1.IsSuccess)
{
LogNet?.WriteDebug(ToString( ), string.Format(StringResources.Language.ClientOfflineInfo, session.IpEndPoint));
RemoveClient(session);
return;
}
;
ushort id = (ushort)(read1.Content[0] * 256 + read1.Content[1]);
byte[] back = ModbusInfo.PackCommandToTcp(ReadFromModbusCore(SoftBasic.BytesArrayRemoveBegin(read1.Content, 6)), id);
if (back != null)
{
session.WorkSocket.Send(back);
}
else
{
session.WorkSocket.Close( );
RemoveClient(session);
return;
}
RaiseDataReceived(read1.Content);
session.WorkSocket.BeginReceive(new byte[0], 0, 0, SocketFlags.None, new AsyncCallback(SocketAsyncCallBack), session);
}
catch
{
// 关闭连接，记录日志
session.WorkSocket?.Close( );
LogNet?.WriteDebug(ToString( ), string.Format(StringResources.Language.ClientOfflineInfo, session.IpEndPoint));
RemoveClient(session);
return;
}
}
}
private void OnReceived(Object sender, ReceivedEventArgs e)
{
var session = sender as NetSession;
if (session == null)
{
return;
}
var msg = ModbusTcpMessage.Read(e.Packet);
if (msg == null)
{
return;
}
session.Log?.Info("<= {0}", msg);
var rs = msg.CreateReply();
switch (msg.Code)
{
case FunctionCodes.ReadCoil:
case FunctionCodes.ReadDiscrete:
{
// 连续地址
var regCount = msg.Payload.ReadBytes(0, 2).ToUInt16(0, false);
var count = (Int32)Math.Ceiling(regCount / 8.0);
var addr = msg.Address - _data[0].Address;
if (addr >= 0 && addr + count <= _data.Count)
{
rs.Payload = _data.Skip(addr).Take(count).SelectMany(e => e.GetData()).ToArray();
}
}
break;
case FunctionCodes.ReadRegister:
case FunctionCodes.ReadInput:
{
// 连续地址
var regCount = msg.Payload.ReadBytes(0, 2).ToUInt16(0, false);
var addr = msg.Address - _data[0].Address;
if (addr >= 0 && addr + regCount <= _data.Count)
{
rs.Payload = _data.Skip(addr).Take(regCount).SelectMany(e => e.GetData()).ToArray();
}
}
break;
case FunctionCodes.WriteCoil:
break;
case FunctionCodes.WriteRegister:
{
// 连续地址
var regCount = 0;
for (var i = 0; i < 256 && i + 1 < msg.Payload.Total; i += 2)
{
var value = msg.Payload.ReadBytes(i, 2).ToUInt16(0, false);
var addr = msg.Address - _data[0].Address;
if (addr >= 0 && addr < _data.Count)
{
var ru = _data[addr];
ru.Value = value;
regCount++;
}
}
Invoke(() => { dgv.Refresh(); });
{
var addr = msg.Address - _data[0].Address;
rs.Payload = _data.Skip(addr).Take(regCount).SelectMany(e => e.GetData()).ToArray();
}
}
break;
case FunctionCodes.WriteCoils:
break;
case FunctionCodes.WriteRegisters:
break;
default:
break;
}
session.Log?.Info("=> {0}", rs);
session.Send(rs.ToPacket());
}
