/// <summary>
/// 重新开始接收下一次的数据传递
/// </summary>
/// <param name="session">网络状态</param>
/// <param name="isProcess">是否触发数据处理</param>
internal void ReBeginReceiveHead(AppSession session, bool isProcess)
{
try
{
byte[] head = session.BytesHead, Content = session.BytesContent;
session.Clear( );
session.WorkSocket.BeginReceive(session.BytesHead, session.AlreadyReceivedHead, session.BytesHead.Length - session.AlreadyReceivedHead,
SocketFlags.None, new AsyncCallback(HeadBytesReceiveCallback), session);
// 检测是否需要数据处理
if (isProcess)
{
// 校验令牌
if (CheckRemoteToken(head))
{
Content = HslProtocol.CommandAnalysis(head, Content);
int protocol = BitConverter.ToInt32(head, 0);
int customer = BitConverter.ToInt32(head, 4);
// 转移到数据中心处理
DataProcessingCenter(session, protocol, customer, Content);
}
else
{
// 应该关闭网络通信
LogNet?.WriteWarn(ToString( ), StringResources.TokenCheckFailed);
AppSessionRemoteClose(session);
}
}
}
catch (Exception ex)
{
SocketReceiveException(session, ex);
LogNet?.WriteException(ToString( ), ex);
}
}
/// <summary>
/// 处理请求接收连接后的方法
/// </summary>
/// <param name="obj">Accpt对象</param>
protected override void ThreadPoolLogin(object obj)
{
if (obj is Socket socket)
{
// 接收一条信息，指定当前请求的数据订阅信息的关键字
OperateResult <int, string> receive = ReceiveStringContentFromSocket(socket);
if (!receive.IsSuccess)
{
return;
}
// 判断当前的关键字在服务器是否有消息发布
if (!IsPushGroupOnline(receive.Content2))
{
SendStringAndCheckReceive(socket, 1, "当前订阅的关键字不存在");
LogNet?.WriteWarn(ToString( ), "当前订阅的关键字不存在");
socket?.Close( );
return;
}
SendStringAndCheckReceive(socket, 0, "");
// 允许发布订阅信息
AppSession session = new AppSession( );
session.KeyGroup = receive.Content2;
session.WorkSocket = socket;
try
{
session.IpEndPoint = (System.Net.IPEndPoint)socket.RemoteEndPoint;
session.IpAddress = session.IpEndPoint.Address.ToString( );
}
catch (Exception ex)
{
LogNet?.WriteException(ToString( ), "Ip信息获取失败", ex);
}
try
{
socket.BeginReceive(session.BytesHead, 0, session.BytesHead.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), session);
}
catch (Exception ex)
{
LogNet?.WriteException(ToString( ), "开启信息接收失败", ex);
return;
}
LogNet?.WriteDebug(ToString( ), $"客户端 [ {session.IpEndPoint} ] 上线");
PushGroupClient push = GetPushGroupClient(receive.Content2);
if (push != null)
{
System.Threading.Interlocked.Increment(ref onlineCount);
push.AddPushClient(session);
}
}
}
private void ReceiveCallBack(IAsyncResult ar)
{
if (ar.AsyncState is Socket socket)
{
try
{
int receive = socket.EndReceive(ar);
OperateResult <byte[]> read = RedisHelper.ReceiveCommand(socket);
if (!read.IsSuccess)
{
SocketReceiveException(null);
return;
}
else
{
socket.BeginReceive(new byte[0], 0, 0, SocketFlags.None, new AsyncCallback(ReceiveCallBack), socket);
}
OperateResult <string[]> data = RedisHelper.GetStringsFromCommandLine(read.Content);
if (!data.IsSuccess)
{
LogNet?.WriteWarn(data.Message);
return;
}
if (data.Content[0].ToUpper() == "SUBSCRIBE")
{
return;
}
else if (data.Content[0].ToUpper( ) == "MESSAGE")
{
action?.Invoke(data.Content[1], data.Content[2]);
}
else
{
LogNet?.WriteWarn(data.Content[0]);
}
}
catch (ObjectDisposedException)
{
// 通常是主动退出
return;
}
catch (Exception ex)
{
SocketReceiveException(ex);
}
}
}
/// <summary>
/// [自校验] 从套接字中接收文件头信息
/// </summary>
/// <param name="socket"></param>
/// <returns></returns>
protected OperateResult <FileBaseInfo> ReceiveFileHeadFromSocket(Socket socket)
{
// 先接收文件头信息
OperateResult <int, string> receiveString = ReceiveStringContentFromSocket(socket);
if (!receiveString.IsSuccess)
{
return(new OperateResult <FileBaseInfo>( )
{
Message = receiveString.Message
});
}
// 判断文件是否存在
if (receiveString.Content1 == 0)
{
socket?.Close( );
LogNet?.WriteWarn(ToString( ), "对方文件不存在，无法接收！");
return(new OperateResult <FileBaseInfo>( )
{
Message = StringResources.FileNotExist
});
}
OperateResult <FileBaseInfo> result = new OperateResult <FileBaseInfo>( );
result.Content = new FileBaseInfo( );
try
{
// 提取信息
Newtonsoft.Json.Linq.JObject json = Newtonsoft.Json.Linq.JObject.Parse(receiveString.Content2);
result.Content.Name = SoftBasic.GetValueFromJsonObject(json, "FileName", "");
result.Content.Size = SoftBasic.GetValueFromJsonObject(json, "FileSize", 0L);
result.Content.Tag = SoftBasic.GetValueFromJsonObject(json, "FileTag", "");
result.Content.Upload = SoftBasic.GetValueFromJsonObject(json, "FileUpload", "");
result.IsSuccess = true;
}
catch (Exception ex)
{
socket?.Close( );
result.Message = "提取信息失败，" + ex.Message;
}
return(result);
}
/// <summary>
/// 检查网络套接字是否操作超时，需要对套接字进行封装
/// </summary>
/// <param name="obj">通常是 <see cref="HslTimeOut"/> 对象 </param>
protected void ThreadPoolCheckTimeOut(object obj)
{
if (obj is HslTimeOut timeout)
{
while (!timeout.IsSuccessful)
{
Thread.Sleep(100);
if ((DateTime.Now - timeout.StartTime).TotalMilliseconds > timeout.DelayTime)
{
// 连接超时或是验证超时
if (!timeout.IsSuccessful)
{
LogNet?.WriteWarn(ToString( ), "Wait Time Out : " + timeout.DelayTime);
timeout.Operator?.Invoke( );
timeout.WorkSocket?.Close( );
}
break;
}
}
}
}
/// <summary>
/// 接收到串口数据的时候触发
/// </summary>
/// <param name="sender">串口对象</param>
/// <param name="e">消息</param>
private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
System.Threading.Thread.Sleep(20); // 此处做个微小的延时，等待数据接收完成
byte[] buffer = new byte[1024];
int count = serialPort.Read(buffer, 0, serialPort.BytesToRead);
byte[] receive = new byte[count];
Array.Copy(buffer, 0, receive, 0, count);
if (receive.Length < 3)
{
LogNet?.WriteError(ToString( ), $"Uknown Data：" + BasicFramework.SoftBasic.ByteToHexString(receive, ' '));
return;
}
if (Serial.SoftCRC16.CheckCRC16(receive))
{
byte[] modbusCore = ModbusRtuTransModbusCore(receive);
if (!CheckModbusMessageLegal(modbusCore))
{
// 指令长度验证错误，关闭网络连接
LogNet?.WriteError(ToString( ), $"Receive Nosense Modbus-tcp : " + BasicFramework.SoftBasic.ByteToHexString(receive, ' '));
return;
}
// LogNet?.WriteError( ToString( ), $"Success：" + BasicFramework.SoftBasic.ByteToHexString( receive, ' ' ) );
// 需要回发消息
byte[] copy = ModbusCoreTransModbusRtu(ReadFromModbusCore(modbusCore));
serialPort.Write(copy, 0, copy.Length);
}
else
{
LogNet?.WriteWarn("CRC Check Failed : " + BasicFramework.SoftBasic.ByteToHexString(receive, ' '));
}
}
private void ThreadHeartCheck( )
{
while (true)
{
Thread.Sleep(2000);
try
{
for (int i = appSessions.Count - 1; i >= 0; i--)
{
if (appSessions[i] == null)
{
appSessions.RemoveAt(i);
continue;
}
if ((DateTime.Now - appSessions[i].HeartTime).TotalSeconds > 1 * 8)//8次没有收到失去联系
{
LogNet?.WriteWarn(ToString(), "心跳验证超时，强制下线：" + appSessions[i].IpAddress.ToString( ));
TcpStateDownLine(appSessions[i], false, false);
continue;
}
}
}
catch (Exception ex)
{
LogNet?.WriteException(ToString(), "心跳线程异常：", ex);
}
if (!IsStarted)
{
break;
}
}
}
/// <summary>
/// 登录后的处理方法
/// </summary>
/// <param name="obj"></param>
protected override void ThreadPoolLogin(object obj)
{
if (obj is Socket socket)
{
// 判断连接数是否超出规定
if (appSessions.Count > ConnectMax)
{
socket?.Close( );
LogNet?.WriteWarn(ToString(), StringResources.NetClientFull);
return;
}
// 接收用户别名并验证令牌
OperateResult result = new OperateResult( );
OperateResult <int, string> readResult = ReceiveStringContentFromSocket(socket);
if (!readResult.IsSuccess)
{
return;
}
// 登录成功
AppSession session = new AppSession( )
{
WorkSocket = socket,
LoginAlias = readResult.Content2,
};
try
{
session.IpEndPoint = (IPEndPoint)socket.RemoteEndPoint;
session.IpAddress = ((IPEndPoint)socket.RemoteEndPoint).Address.ToString( );
}
catch (Exception ex)
{
LogNet?.WriteException(ToString( ), "客户端地址获取失败：", ex);
}
if (readResult.Content1 == 1)
{
// 电脑端客户端
session.ClientType = "Windows";
}
else if (readResult.Content1 == 2)
{
// Android 客户端
session.ClientType = "Android";
}
try
{
session.WorkSocket.BeginReceive(session.BytesHead, session.AlreadyReceivedHead,
session.BytesHead.Length - session.AlreadyReceivedHead, SocketFlags.None,
new AsyncCallback(HeadBytesReceiveCallback), session);
TcpStateUpLine(session);
Thread.Sleep(100); //留下一些时间进行反应
}
catch (Exception ex)
{
//登录前已经出错
TcpStateClose(session);
LogNet?.WriteException(ToString(), StringResources.NetClientLoginFailed, ex);
}
}
}
/// <summary>
/// 指令头接收方法
/// </summary>
/// <param name="ar">异步状态信息</param>
protected void HeadBytesReceiveCallback(IAsyncResult ar)
{
if (ar.AsyncState is AppSession session)
{
try
{
int receiveCount = session.WorkSocket.EndReceive(ar);
if (receiveCount == 0)
{
// 断开了连接，需要做个处理，一个是直接关闭，另一个是触发下线
AppSessionRemoteClose(session);
return;
}
else
{
session.AlreadyReceivedHead += receiveCount;
}
}
catch (ObjectDisposedException)
{
// 不需要处理，来自服务器主动关闭
return;
}
catch (SocketException ex)
{
// 已经断开连接了
SocketReceiveException(session, ex);
LogNet?.WriteException(ToString( ), ex);
return;
}
catch (Exception ex)
{
// 其他乱七八糟的异常重新启用接收数据
ReBeginReceiveHead(session, false);
LogNet?.WriteException(ToString( ), StringResources.SocketEndReceiveException, ex);
return;
}
if (session.AlreadyReceivedHead < session.BytesHead.Length)
{
try
{
// 仍需要接收
session.WorkSocket.BeginReceive(session.BytesHead, session.AlreadyReceivedHead, session.BytesHead.Length - session.AlreadyReceivedHead,
SocketFlags.None, new AsyncCallback(HeadBytesReceiveCallback), session);
}
catch (Exception ex)
{
SocketReceiveException(session, ex);
LogNet?.WriteException(ToString( ), ex);
}
}
else
{
// 接收完毕，校验令牌
if (!CheckRemoteToken(session.BytesHead))
{
LogNet?.WriteWarn(ToString( ), StringResources.TokenCheckFailed);
AppSessionRemoteClose(session);
return;
}
int receive_length = BitConverter.ToInt32(session.BytesHead, session.BytesHead.Length - 4);
session.BytesContent = new byte[receive_length];
if (receive_length > 0)
{
try
{
int receiveSize = session.BytesContent.Length - session.AlreadyReceivedContent;
session.WorkSocket.BeginReceive(session.BytesContent, session.AlreadyReceivedContent, receiveSize,
SocketFlags.None, new AsyncCallback(ContentReceiveCallback), session);
}
catch (Exception ex)
{
SocketReceiveException(session, ex);
LogNet?.WriteException(ToString( ), ex);
}
}
else
{
// 处理数据并重新启动接收
ReBeginReceiveHead(session, true);
}
}
}
}
private void AsyncCallback(IAsyncResult ar)
{
if (ar.AsyncState is AsyncStateOne state)
{
try
{
int received = state.WorkSocket.EndReceiveFrom(ar, ref state.UdpEndPoint);
//释放连接关联
state.WorkSocket = null;
//马上开始重新接收，提供性能保障
RefreshReceive();
//处理数据
if (received >= HslCommunicationCode.HeadByteLength)
{
//检测令牌
if (NetSupport.IsTwoBytesEquel(state.BytesContent, 12, KeyToken.ToByteArray(), 0, 16))
{
state.IpEndPoint = (IPEndPoint)state.UdpEndPoint;
int contentLength = BitConverter.ToInt32(state.BytesContent, HslCommunicationCode.HeadByteLength - 4);
if (contentLength == received - HslCommunicationCode.HeadByteLength)
{
byte[] head = new byte[HslCommunicationCode.HeadByteLength];
byte[] content = new byte[contentLength];
Array.Copy(state.BytesContent, 0, head, 0, HslCommunicationCode.HeadByteLength);
if (contentLength > 0)
{
Array.Copy(state.BytesContent, 32, content, 0, contentLength);
}
//解析内容
content = NetSupport.CommandAnalysis(head, content);
int protocol = BitConverter.ToInt32(head, 0);
int customer = BitConverter.ToInt32(head, 4);
//丢给数据中心处理
DataProcessingCenter(state, protocol, customer, content);
}
else
{
//否则记录到日志
LogNet?.WriteWarn(LogHeaderText, $"接收到异常数据，应接收长度：{(BitConverter.ToInt32(state.BytesContent, 4) + 8)} 实际接收：{received}");
}
}
else
{
LogNet?.WriteWarn(LogHeaderText, StringResources.TokenCheckFailed);
}
}
else
{
LogNet?.WriteWarn(LogHeaderText, $"接收到异常数据，长度不符合要求，实际接收：{received}");
}
}
catch (ObjectDisposedException ex)
{
//主程序退出的时候触发
}
catch (Exception ex)
{
LogNet?.WriteException(LogHeaderText, StringResources.SocketEndReceiveException, ex);
//重新接收，此处已经排除掉了对象释放的异常
RefreshReceive();
}
finally
{
//state = null;
}
}
}
private void AsyncCallback(IAsyncResult ar)
{
if (ar.AsyncState is AppSession session)
{
try
{
int received = session.WorkSocket.EndReceiveFrom(ar, ref session.UdpEndPoint);
// 释放连接关联
session.WorkSocket = null;
// 马上开始重新接收，提供性能保障
RefreshReceive( );
// 处理数据
if (received >= HslProtocol.HeadByteLength)
{
// 检测令牌
if (CheckRemoteToken(session.BytesContent))
{
session.IpEndPoint = (IPEndPoint)session.UdpEndPoint;
int contentLength = BitConverter.ToInt32(session.BytesContent, HslProtocol.HeadByteLength - 4);
if (contentLength == received - HslProtocol.HeadByteLength)
{
byte[] head = new byte[HslProtocol.HeadByteLength];
byte[] content = new byte[contentLength];
Array.Copy(session.BytesContent, 0, head, 0, HslProtocol.HeadByteLength);
if (contentLength > 0)
{
Array.Copy(session.BytesContent, 32, content, 0, contentLength);
}
// 解析内容
content = HslProtocol.CommandAnalysis(head, content);
int protocol = BitConverter.ToInt32(head, 0);
int customer = BitConverter.ToInt32(head, 4);
// 丢给数据中心处理
DataProcessingCenter(session, protocol, customer, content);
}
else
{
// 否则记录到日志
LogNet?.WriteWarn(ToString(), $"Should Rece：{(BitConverter.ToInt32( session.BytesContent, 4 ) + 8)} Actual：{received}");
}
}
else
{
LogNet?.WriteWarn(ToString( ), StringResources.Language.TokenCheckFailed);
}
}
else
{
LogNet?.WriteWarn(ToString( ), $"Receive error, Actual：{received}");
}
}
catch (ObjectDisposedException)
{
//主程序退出的时候触发
}
catch (Exception ex)
{
LogNet?.WriteException(ToString( ), StringResources.Language.SocketEndReceiveException, ex);
//重新接收，此处已经排除掉了对象释放的异常
RefreshReceive( );
}
finally
{
//state = null;
}
}
}
/// <summary>
/// 处理请求接收连接后的方法
/// </summary>
/// <param name="obj">Accpt对象</param>
protected override void ThreadPoolLogin(object obj)
{
if (obj is Socket socket)
{
// 接收一条信息，指定当前请求的数据订阅信息的关键字
OperateResult <int, string> receive = ReceiveStringContentFromSocket(socket);
if (!receive.IsSuccess)
{
return;
}
// 判断当前的关键字在服务器是否有消息发布
if (!IsPushGroupOnline(receive.Content2))
{
SendStringAndCheckReceive(socket, 1, StringResources.Language.KeyIsNotExist);
LogNet?.WriteWarn(ToString( ), StringResources.Language.KeyIsNotExist);
socket?.Close( );
return;
}
SendStringAndCheckReceive(socket, 0, "");
// 允许发布订阅信息
AppSession session = new AppSession
{
KeyGroup = receive.Content2,
WorkSocket = socket
};
try
{
session.IpEndPoint = (System.Net.IPEndPoint)socket.RemoteEndPoint;
session.IpAddress = session.IpEndPoint.Address.ToString( );
}
catch (Exception ex)
{
LogNet?.WriteException(ToString( ), StringResources.Language.GetClientIpaddressFailed, ex);
}
try
{
socket.BeginReceive(session.BytesHead, 0, session.BytesHead.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), session);
}
catch (Exception ex)
{
LogNet?.WriteException(ToString( ), StringResources.Language.SocketReceiveException, ex);
return;
}
LogNet?.WriteDebug(ToString( ), string.Format(StringResources.Language.ClientOnlineInfo, session.IpEndPoint));
PushGroupClient push = GetPushGroupClient(receive.Content2);
if (push != null)
{
System.Threading.Interlocked.Increment(ref onlineCount);
push.AddPushClient(session);
dicSendCacheLock.Enter( );
if (dictSendHistory.ContainsKey(receive.Content2))
{
if (isPushCacheAfterConnect)
{
SendString(session, dictSendHistory[receive.Content2]);
}
}
dicSendCacheLock.Leave( );
}
}
}
/// <summary>
/// 登录后的处理方法
/// </summary>
/// <param name="obj"></param>
protected override void ThreadPoolLogin(object obj)
{
if (obj is Socket socket)
{
// 判断连接数是否超出规定
if (All_sockets_connect.Count > ConnectMax)
{
socket?.Close();
LogNet?.WriteWarn(LogHeaderText, StringResources.NetClientFull);
return;
}
// 接收用户别名并验证令牌
OperateResult result = new OperateResult();
if (!ReceiveStringFromSocket(
socket,
out int customer,
out string login_alias,
result,
null
))
{
socket?.Close();
return;
}
// 登录成功
AsyncStateOne stateone = new AsyncStateOne()
{
WorkSocket = socket,
LoginAlias = login_alias,
IpEndPoint = (IPEndPoint)socket.RemoteEndPoint,
IpAddress = ((IPEndPoint)socket.RemoteEndPoint).Address.ToString(),
};
if (customer == 1)
{
// 电脑端客户端
stateone.ClientType = "Windows";
}
else if (customer == 2)
{
// Android 客户端
stateone.ClientType = "Android";
}
try
{
stateone.WorkSocket.BeginReceive(stateone.BytesHead, stateone.AlreadyReceivedHead,
stateone.BytesHead.Length - stateone.AlreadyReceivedHead, SocketFlags.None,
new AsyncCallback(HeadReceiveCallback), stateone);
TcpStateUpLine(stateone);
Thread.Sleep(500);//留下一些时间进行反应
}
catch (Exception ex)
{
//登录前已经出错
TcpStateClose(stateone);
LogNet?.WriteException(LogHeaderText, StringResources.NetClientLoginFailed, ex);
}
}
}
/// <summary>
/// 接收到串口数据的时候触发
/// </summary>
/// <param name="sender">串口对象</param>
/// <param name="e">消息</param>
private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
int rCount = 0;
byte[] buffer = new byte[1024];
byte[] receive = null;
while (true)
{
System.Threading.Thread.Sleep(20); // 此处做个微小的延时，等待数据接收完成
int count = serialPort.Read(buffer, rCount, serialPort.BytesToRead);
rCount += count;
if (count == 0)
{
break;
}
receive = new byte[rCount];
Array.Copy(buffer, 0, receive, 0, count);
}
if (receive == null)
{
return;
}
if (receive.Length < 3)
{
LogNet?.WriteError(ToString( ), $"Uknown Data：" + SoftBasic.ByteToHexString(receive, ' '));
return;
}
if (Serial.SoftCRC16.CheckCRC16(receive))
{
byte[] modbusCore = SoftBasic.BytesArrayRemoveLast(receive, 2);
if (!CheckModbusMessageLegal(modbusCore))
{
// 指令长度验证错误，关闭网络连接
LogNet?.WriteError(ToString( ), $"Receive Nosense Modbus-rtu : " + SoftBasic.ByteToHexString(receive, ' '));
return;
}
// 验证站号是否一致
if (station >= 0 && station != modbusCore[0])
{
LogNet?.WriteError(ToString( ), $"Station not match Modbus-rtu : " + SoftBasic.ByteToHexString(receive, ' '));
return;
}
// LogNet?.WriteError( ToString( ), $"Success：" + BasicFramework.SoftBasic.ByteToHexString( receive, ' ' ) );
// 需要回发消息
byte[] copy = ModbusInfo.PackCommandToRtu(ReadFromModbusCore(modbusCore));
serialPort.Write(copy, 0, copy.Length);
if (IsStarted)
{
RaiseDataReceived(receive);
}
}
else
{
LogNet?.WriteWarn("CRC Check Failed : " + SoftBasic.ByteToHexString(receive, ' '));
}
}
private void ContentReveiveCallBack(IAsyncResult ar)
{
if (ar.AsyncState is ModBusState state)
{
try
{
int count = state.WorkSocket.EndReceive(ar);
state.ContentReceivedLength += count;
if (state.ContentReceivedLength < state.Content.Length)
{
// 数据不够，继续接收
state.WorkSocket.BeginReceive(state.Content, state.ContentReceivedLength, state.Content.Length - state.ContentReceivedLength,
SocketFlags.None, new AsyncCallback(ContentReveiveCallBack), state);
}
else
{
// 内容接收完成，所有的数据接收结束
byte[] data = new byte[state.HeadByte.Length + state.Content.Length];
state.HeadByte.CopyTo(data, 0);
state.Content.CopyTo(data, state.HeadByte.Length);
state.Clear();
// 重新启动接收
state.WorkSocket.BeginReceive(state.HeadByte, state.HeadByteReceivedLength, state.HeadByte.Length, SocketFlags.None, new AsyncCallback(HeadReveiveCallBack), state);
// 需要回发消息
byte[] copy = null;
switch (data[7])
{
case 0x01:
{
// 线圈读取
int address = data[8] * 256 + data[9];
int length = data[10] * 256 + data[11];
if (length > 2048)
{
length = 2048; // 线圈读取应该小于2048个
}
bool[] read = ReadCoil((ushort)address, (ushort)length);
byte[] buffer = BasicFramework.SoftBasic.BoolArrayToByte(read);
copy = new byte[9 + buffer.Length];
Array.Copy(data, 0, copy, 0, 8);
copy[4] = (byte)((copy.Length - 6) / 256);
copy[5] = (byte)((copy.Length - 6) % 256);
copy[8] = (byte)buffer.Length;
Array.Copy(buffer, 0, copy, 9, buffer.Length);
break;
}
case 0x02:
{
// 离散值读取，本服务器无效
copy = new byte[9];
Array.Copy(data, 0, copy, 0, 8);
copy[4] = 0x00;
copy[5] = 0x03;
break;
}
case 0x03:
{
// 寄存器读取
int address = data[8] * 256 + data[9];
int length = data[10] * 256 + data[11];
if (length > 127)
{
length = 127; // 寄存器最大读取范围为127个
}
byte[] buffer = ReadRegister((ushort)address, (ushort)length);
copy = new byte[9 + buffer.Length];
Array.Copy(data, 0, copy, 0, 8);
copy[4] = (byte)((copy.Length - 6) / 256);
copy[5] = (byte)((copy.Length - 6) % 256);
copy[8] = (byte)buffer.Length;
Array.Copy(buffer, 0, copy, 9, buffer.Length);
break;
}
case 0x05:
{
// 写单个线圈
int address = data[8] * 256 + data[9];
if (data[10] == 0xFF && data[11] == 0x00)
{
WriteCoil((ushort)address, true);
}
else if (data[10] == 0x00 && data[11] == 0x00)
{
WriteCoil((ushort)address, false);
}
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
case 0x06:
{
// 写单个寄存器
int address = data[8] * 256 + data[9];
WriteRegister((ushort)address, data[10], data[11]);
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
case 0x0F:
{
// 写多个线圈
int address = data[8] * 256 + data[9];
int length = data[10] * 256 + data[11];
byte[] buffer = new byte[data.Length - 13];
Array.Copy(data, 13, buffer, 0, buffer.Length);
bool[] value = BasicFramework.SoftBasic.ByteToBoolArray(buffer, length);
WriteCoil((ushort)address, value);
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
case 0x10:
{
// 写多个寄存器
int address = data[8] * 256 + data[9];
int length = data[10] * 256 + data[11];
byte[] buffer = new byte[data.Length - 13];
for (int i = 0; i < length; i++)
{
if ((2 * i + 14) < data.Length)
{
WriteRegister((ushort)(address + i), data[2 * i + 13], data[2 * i + 14]);
}
}
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
default:
{
if (IsStarted)
{
LogNet?.WriteWarn(LogHeaderText, "Unknown Function Code:" + data[7]);
}
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
}
// 回发数据
state.WorkSocket.BeginSend(copy, 0, size: copy.Length, socketFlags: SocketFlags.None, callback: new AsyncCallback(DataSendCallBack), state: state);
// 通知处理消息
if (IsStarted)
{
OnDataReceived?.Invoke(data);
}
}
}
catch (Exception ex)
{
// 关闭连接，记录日志
state.WorkSocket?.Close();
state = null;
if (IsStarted)
{
LogNet?.WriteException(LogHeaderText, "内容数据接收失败！", ex);
}
}
}
}
private void ModbusDataReveiveCallback(IAsyncResult ar)
{
if (ar.AsyncState is ModBusState state)
{
try
{
state.ContentReceivedLength += state.WorkSocket.EndReceive(ar);
}
catch (Exception ex)
{
// 关闭连接，记录日志
state.WorkSocket?.Close();
state = null;
LogNet?.WriteException(LogHeaderText, "内容数据接收失败！", ex);
return;
}
if (state.ContentReceivedLength < state.Content.Length)
{
// 数据不够，继续接收
state.WorkSocket.BeginReceive(state.Content, state.ContentReceivedLength, state.Content.Length - state.ContentReceivedLength,
SocketFlags.None, new AsyncCallback(ModbusDataReveiveCallback), state);
return;
}
// 数据接收完成
// 内容接收完成，所有的数据接收结束
byte[] data = new byte[state.HeadByte.Length + state.Content.Length];
state.HeadByte.CopyTo(data, 0);
state.Content.CopyTo(data, state.HeadByte.Length);
state.Clear();
if (data[7] == 0x01 ||
data[7] == 0x02 ||
data[7] == 0x03)
{
if (data.Length != 0x0C)
{
// 指令长度验证错误，关闭网络连接
state.WorkSocket?.Close();
state = null;
LogNet?.WriteWarn(LogHeaderText, "Command length check failed！");
return;
}
}
// 需要回发消息
byte[] copy = null;
try
{
switch (data[7])
{
case 0x01:
{
// 线圈读取
int address = data[8] * 256 + data[9];
int length = data[10] * 256 + data[11];
if (length > 2048)
{
length = 2048; // 线圈读取应该小于2048个
}
bool[] read = ReadCoil((ushort)address, (ushort)length);
byte[] buffer = BasicFramework.SoftBasic.BoolArrayToByte(read);
copy = new byte[9 + buffer.Length];
Array.Copy(data, 0, copy, 0, 8);
copy[4] = (byte)((copy.Length - 6) / 256);
copy[5] = (byte)((copy.Length - 6) % 256);
copy[8] = (byte)buffer.Length;
Array.Copy(buffer, 0, copy, 9, buffer.Length);
break;
}
case 0x03:
{
// 寄存器读取
int address = data[8] * 256 + data[9];
int length = data[10] * 256 + data[11];
if (length > 127)
{
length = 127; // 寄存器最大读取范围为127个
}
byte[] buffer = ReadRegister((ushort)address, (ushort)length);
copy = new byte[9 + buffer.Length];
Array.Copy(data, 0, copy, 0, 8);
copy[4] = (byte)((copy.Length - 6) / 256);
copy[5] = (byte)((copy.Length - 6) % 256);
copy[8] = (byte)buffer.Length;
Array.Copy(buffer, 0, copy, 9, buffer.Length);
break;
}
case 0x05:
{
// 写单个线圈
int address = data[8] * 256 + data[9];
if (data[10] == 0xFF && data[11] == 0x00)
{
WriteCoil((ushort)address, true);
}
else if (data[10] == 0x00 && data[11] == 0x00)
{
WriteCoil((ushort)address, false);
}
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
case 0x06:
{
// 写单个寄存器
ushort address = (ushort)(data[8] * 256 + data[9]);
short ValueOld = ReadShortRegister(address);
// 写入到寄存器
WriteRegister(address, data[10], data[11]);
short ValueNew = ReadShortRegister(address);
// 触发写入请求
OnRegisterBeforWrite(address, ValueOld, ValueNew);
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
case 0x0F:
{
// 写多个线圈
int address = data[8] * 256 + data[9];
int length = data[10] * 256 + data[11];
byte[] buffer = new byte[data.Length - 13];
Array.Copy(data, 13, buffer, 0, buffer.Length);
bool[] value = BasicFramework.SoftBasic.ByteToBoolArray(buffer, length);
WriteCoil((ushort)address, value);
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
case 0x10:
{
// 写多个寄存器
int address = data[8] * 256 + data[9];
int length = data[10] * 256 + data[11];
byte[] buffer = new byte[data.Length - 13];
// 为了使服务器的数据订阅更加的准确，决定将设计改为等待所有的数据写入完成后，再统一触发订阅，2018年3月4日 20:56:47
MonitorAddress[] addresses = new MonitorAddress[length];
for (int i = 0; i < length; i++)
{
if ((2 * i + 14) < data.Length)
{
short ValueOld = ReadShortRegister((ushort)(address + i));
WriteRegister((ushort)(address + i), data[2 * i + 13], data[2 * i + 14]);
short ValueNew = ReadShortRegister((ushort)(address + i));
// 触发写入请求
addresses[i] = new MonitorAddress( )
{
Address = (ushort)(address + i),
ValueOrigin = ValueOld,
ValueNew = ValueNew
};
}
}
// 所有数据都更改完成后，再触发消息
for (int i = 0; i < addresses.Length; i++)
{
OnRegisterBeforWrite(addresses[i].Address, addresses[i].ValueOrigin, addresses[i].ValueNew);
}
copy = new byte[12];
Array.Copy(data, 0, copy, 0, 12);
copy[4] = 0x00;
copy[5] = 0x06;
break;
}
default:
{
copy = new byte[9];
Array.Copy(data, 0, copy, 0, 8);
copy[4] = 0x00;
copy[5] = 0x03;
copy[7] = (byte)(data[7] + 0x80);
copy[8] = 0x01; // 不支持的功能码
break;
}
}
}
catch (Exception ex)
{
state.WorkSocket?.Close( );
state = null;
LogNet?.WriteException(LogHeaderText, ex);
return;
}
try
{
// 管他是什么，先开始数据接收
// state.WorkSocket?.Close();
state.WorkSocket.BeginReceive(state.HeadByte, 0, 6, SocketFlags.None, new AsyncCallback(ModbusHeadReveiveCallback), state);
}
catch (Exception ex)
{
state.WorkSocket?.Close();
state = null;
LogNet?.WriteException(LogHeaderText, "Send exception:", ex);
return;
}
// 回发数据，先获取发送锁
state.hybirdLock.Enter();
state.WorkSocket.BeginSend(copy, 0, size: copy.Length, socketFlags: SocketFlags.None, callback: new AsyncCallback(DataSendCallBack), state: state);
// 通知处理消息
if (IsStarted)
{
OnDataReceived?.Invoke(data);
}
}
}
/// <summary>
/// 当接收到了新的请求的时候执行的操作
/// </summary>
/// <param name="socket">异步对象</param>
/// <param name="endPoint">终结点</param>
protected override void ThreadPoolLogin(Socket socket, IPEndPoint endPoint)
{
// 注册包
// 0x48 0x73 0x6E 0x00 0x17 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x30 0x31 0x00 0x00 0x00 0x00 0x00 0x00 0xC0 0xA8 0x00 0x01 0x17 0x10
// +------------+ +--+ +--+ +----------------------------------------------------+ +---------------------------+ +-----------------+ +-------+
// + 固定消息头 +备用 长度 DTU码 12345678901 (唯一标识) 登录密码(不受信的排除) Ip:192.168.0.1 端口10000
// +------------+ +--+ +--+ +----------------------------------------------------+ +---------------------------+ +-----------------+
// 返回
// 0x48 0x73 0x6E 0x00 0x01 0x00
// +------------+ +--+ +--+ +--+
// 固定消息头 备用 长度 结果代码
// 结果代码
// 0x00: 登录成功
// 0x01: DTU重复登录
// 0x02: DTU禁止登录
// 0x03: 密码验证失败
OperateResult <byte[]> check = ReceiveByMessage(socket, 5000, new AlienMessage( ));
if (!check.IsSuccess)
{
return;
}
if (check.Content[4] != 0x17 || check.Content.Length != 0x1C)
{
socket?.Close( );
LogNet?.WriteWarn(ToString( ), "Length Check Failed");
return;
}
// 密码验证
bool isPasswrodRight = true;
for (int i = 0; i < password.Length; i++)
{
if (check.Content[16 + i] != password[i])
{
isPasswrodRight = false;
break;
}
}
string dtu = Encoding.ASCII.GetString(check.Content, 5, 11).Trim( );
// 密码失败的情况
if (!isPasswrodRight)
{
OperateResult send = Send(socket, GetResponse(StatusPasswodWrong));
if (send.IsSuccess)
{
socket?.Close( );
}
LogNet?.WriteWarn(ToString( ), "Login Password Wrong, Id:" + dtu);
return;
}
AlienSession session = new AlienSession( )
{
DTU = dtu,
Socket = socket,
};
// 检测是否禁止登录
if (!IsClientPermission(session))
{
OperateResult send = Send(socket, GetResponse(StatusLoginForbidden));
if (send.IsSuccess)
{
socket?.Close( );
}
LogNet?.WriteWarn(ToString( ), "Login Forbidden, Id:" + session.DTU);
return;
}
// 检测是否重复登录，不重复的话，也就是意味着登录成功了
if (IsClientOnline(session))
{
OperateResult send = Send(socket, GetResponse(StatusLoginRepeat));
if (send.IsSuccess)
{
socket?.Close( );
}
LogNet?.WriteWarn(ToString( ), "Login Repeat, Id:" + session.DTU);
return;
}
else
{
OperateResult send = Send(socket, GetResponse(StatusOk));
if (!send.IsSuccess)
{
return;
}
}
// 触发上线消息
OnClientConnected?.Invoke(this, session);
}
private void ModbusHeadReveiveCallback(IAsyncResult ar)
{
if (ar.AsyncState is ModBusState state)
{
try
{
int receiveCount = state.WorkSocket.EndReceive(ar);
if (receiveCount == 0)
{
state.WorkSocket?.Close( );
LogNet?.WriteDebug(ToString( ), $"客户端 [ {state.IpEndPoint} ] 下线");
return;
}
else
{
state.HeadByteReceivedLength += receiveCount;
}
}
catch (Exception ex)
{
// 关闭连接，记录日志
state.WorkSocket?.Close( );
LogNet?.WriteException(ToString(), $"客户端 [ {state.IpEndPoint} ] 异常下线，消息子节接收失败！", ex);
return;
}
try
{
if (state.HeadByteReceivedLength < state.HeadByte.Length)
{
// 数据不够，继续接收
state.WorkSocket.BeginReceive(state.HeadByte, state.HeadByteReceivedLength, state.HeadByte.Length - state.HeadByteReceivedLength,
SocketFlags.None, new AsyncCallback(ModbusHeadReveiveCallback), state);
return;
}
}
catch (Exception ex)
{
state.WorkSocket?.Close( );
LogNet?.WriteException(ToString( ), $"客户端 [ {state.IpEndPoint} ] 异常下线，再次启动接收失败！", ex);
return;
}
// 准备接收的数据长度
int ContentLength = state.HeadByte[4] * 256 + state.HeadByte[5];
// 第一次过滤，过滤掉不是Modbus Tcp协议的
if (state.HeadByte[2] == 0x00 &&
state.HeadByte[3] == 0x00 &&
ContentLength < 300)
{
try
{
// 头子节接收完成
state.Content = new byte[ContentLength];
state.ContentReceivedLength = 0;
// 开始接收内容
state.WorkSocket.BeginReceive(state.Content, state.ContentReceivedLength, state.Content.Length - state.ContentReceivedLength,
SocketFlags.None, new AsyncCallback(ModbusDataReveiveCallback), state);
}
catch (Exception ex)
{
state.WorkSocket?.Close( );
LogNet?.WriteException(ToString( ), $"客户端 [ {state.IpEndPoint} ] 异常下线，启动内容接收失败！", ex);
return;
}
}
else
{
// 关闭连接，记录日志
state.WorkSocket?.Close( );
LogNet?.WriteWarn(ToString(), $"客户端 [ {state.IpEndPoint} ] 下线，不是标准的Modbus协议！");
}
}
}
private void AsyncCallback(IAsyncResult ar)
{
if (ar.AsyncState is AppSession session)
{
try
{
int received = session.WorkSocket.EndReceiveFrom(ar, ref session.UdpEndPoint);
// 马上开始重新接收，提供性能保障
RefreshReceive();
session.IpEndPoint = (IPEndPoint)session.UdpEndPoint;
int contentLength = session.BytesContent[2] * 256 + session.BytesContent[3];
byte[] dtuNumArray = new byte[11];
byte[] publicNetworkArray = new byte[4];
byte[] publicPortArray = new byte[2];
if (contentLength > 0)
{
Array.Copy(session.BytesContent, 4, dtuNumArray, 0, 11);
Array.Copy(session.BytesContent, 15, publicNetworkArray, 0, 4);
Array.Copy(session.BytesContent, 19, publicPortArray, 0, 2);
}
if (session.BytesContent[0] == 0x7b) // 代表宏电DDP协议
{
string dtuNum = Encoding.ASCII.GetString(dtuNumArray, 0, 11).Trim();
// 解析内容
if (session.BytesContent[1] == 0x01 && contentLength == 22) // 0x01 终端请求注册
{
string publicNetwork = BasicFramework.SoftBasic.ByteToHexTenString(publicNetworkArray, '.'); // 终端内网IP
int publicPort = Convert.ToInt32(BasicFramework.SoftBasic.ByteToHexString(publicPortArray), 16); //终端内网端口
SendBytesAsync(session, BuildDtuNumCommand(dtuNumArray));
LogNet?.WriteInfo(ToString(), $"请求注册 终端号码：{dtuNum} 终端公网IP：{session.IpEndPoint} 终端内网IP：{publicNetwork}:{publicPort}");
}
if (session.BytesContent[1] == 0x02 && contentLength == 16) // 0x02 终端请求注销
{
LogNet?.WriteInfo(ToString(), $"请求注销 终端号码：{dtuNum}");
}
if (session.BytesContent[1] == 0x09) // 0x09 发送给DSC的用户数据包
{
byte[] instructArray = new byte[session.BytesContent[18]]; // 接收的指令长度（不包含宏电数据头）
Array.Copy(session.BytesContent, 16, instructArray, 0, session.BytesContent[18]);
LogNet?.WriteInfo(ToString(), $"发送给DSC的用户数据包 终端号码：{dtuNum} 数据捕获：{BasicFramework.SoftBasic.ByteToHexString(instructArray, ' ')}");
}
}
else
{
LogNet?.WriteWarn(ToString(), $"数据捕获：{BasicFramework.SoftBasic.ByteToHexString(session.BytesContent, ' ')}");
}
}
catch (ObjectDisposedException)
{
//主程序退出的时候触发
}
catch (Exception ex)
{
LogNet?.WriteException(ToString(), StringResources.Language.SocketEndReceiveException, ex);
//重新接收，此处已经排除掉了对象释放的异常
RefreshReceive();
}
finally
{
//state = null;
}
}
}
