461 lines
16 KiB
C#
461 lines
16 KiB
C#
// **********************************************************************************************************
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// CommDeviceTcpAsync.cs
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// 3/6/2024
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// NGI - Next Generation Interceptor
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//
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// Contract No. HQ0856-21-C-0003/1022000209
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//
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// THIS DOCUMENT DOES NOT CONTAIN TECHNOLOGY OR TECHNICAL DATA CONTROLLED UNDER EITHER THE U.S.
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// INTERNATIONAL TRAFFIC IN ARMS REGULATIONS OR THE U.S. EXPORT ADMINISTRATION REGULATIONS.
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//
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// RAYTHEON PROPRIETARY: THIS DOCUMENT CONTAINS DATA OR INFORMATION PROPRIETARY TO RAYTHEON
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// COMPANY AND IS RESTRICTED TO USE ONLY BY PERSONS AUTHORIZED BY RAYTHEON COMPANY IN WRITING TO USE IT.
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// DISCLOSURE TO UNAUTHORIZED PERSONS WOULD LIKELY CAUSE SUBSTANTIAL COMPETITIVE HARM TO RAYTHEON
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// COMPANY'S BUSINESS POSITION. NEITHER SAID DOCUMENT NOR ITS CONTENTS SHALL BE FURNISHED OR DISCLOSED
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// TO OR COPIED OR USED BY PERSONS OUTSIDE RAYTHEON COMPANY WITHOUT THE EXPRESS WRITTEN APPROVAL OF
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// RAYTHEON COMPANY.
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//
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// UNPUBLISHED WORK - COPYRIGHT RAYTHEON COMPANY.
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//
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// DESTRUCTION NOTICE: FOR CLASSIFIED DOCUMENTS FOLLOW THE PROCEDURES IN DOD 5220.22-M,
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// NATIONAL INDUSTRIAL SECURITY PROGRAM OPERATING MANUAL, FEBRUARY 2006,
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// INCORPORATING CHANGE 1, MARCH 28, 2013, CHAPTER 5, SECTION 7, OR DODM 5200.01-VOLUME 3,
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// DOD INFORMATION SECURITY PROGRAM: PROTECTION OF CLASSIFIED INFORMATION, ENCLOSURE 3,
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// SECTION 17. FOR CONTROLLED UNCLASSIFIED INFORMATION FOLLOW THE PROCEDURES IN DODM 5200.01-VOLUME 4,
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// INFORMATION SECURITY PROGRAM: CONTROLLED UNCLASSIFIED INFORMATION.
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//
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// CONTROLLED BY: MISSILE DEFENSE AGENCY
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// CONTROLLED BY: GROUND-BASED MIDCOURSE DEFENSE PROGRAM OFFICE
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// CUI CATEGORY: CTI
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// DISTRIBUTION/DISSEMINATION CONTROL: F
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// POC: Alex Kravchenko (1118268)
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// **********************************************************************************************************
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using System;
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using System.Net;
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using System.Net.Sockets;
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using System.Reflection;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using NLog;
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using Raytheon.Common;
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namespace Raytheon.Instruments
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{
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/// <summary>
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/// A sim communication device
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/// </summary>
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public class CommDeviceTcpAsync : ICommAsync
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{
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#region PrivateClassMembers
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private uint _defaultReadTimeout;
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private uint _defaultSendTimeout;
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private uint _defaultReadBufferSize;
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private static readonly object _syncObj = new object();
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private TcpClient _tcpClient;
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private TcpListener _tcpListener;
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private NetworkStream _tcpIpStream;
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private int _port;
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private string _remoteAddress;
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private int _remotePort;
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private readonly string _name;
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private State _state;
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private readonly ILogger _logger;
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private readonly IConfigurationManager _configurationManager;
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private readonly IConfiguration _configuration;
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#endregion
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public bool ClearErrors() => false;
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public bool FrontPanelEnabled { get => false; set => throw new NotImplementedException(); }
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public bool DisplayEnabled { get => false; set => throw new NotImplementedException(); }
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public string DetailedStatus => $"This is a TCP/IP Device called {_name}";
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public InstrumentMetadata Info => throw new NotImplementedException();
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public State Status => _state;
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public string Name => _name;
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public SelfTestResult PerformSelfTest() => SelfTestResult;
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public SelfTestResult SelfTestResult => SelfTestResult.Unknown;
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public void Open() => Initialize();
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public void Close() => Shutdown();
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public void Reset()
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{
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Close();
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Open();
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}
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#region Private Functions
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/// <summary>
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/// Dispose of the resources contained by this object
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/// </summary>
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public void Dispose()
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{
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try
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{
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lock (_syncObj)
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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}
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catch (Exception err)
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{
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_logger.Error(err.Message + "\r\n" + err.StackTrace);
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}
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}
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/// <summary>
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/// Dispose of the resources contained by this object
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/// </summary>
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/// <param name="disposing"></param>
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protected virtual void Dispose(bool disposing)
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{
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if (disposing)
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{
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// close the socket
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try
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{
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Shutdown();
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}
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catch (Exception err)
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{
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_logger.Error(err.Message + "\r\n" + err.StackTrace);
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}
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}
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}
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#endregion
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#region Public Functions
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/// <summary>
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/// CommDevice factory constructor
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/// </summary>
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/// <param name="deviceName"></param>
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/// <param name="configurationManager"></param>
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public CommDeviceTcpAsync(string deviceName, IConfigurationManager configurationManager)
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{
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_name = deviceName;
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// _tcpClient is created in Initialize()
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_tcpClient = null;
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_tcpIpStream = null;
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_state = State.Uninitialized;
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_logger = LogManager.GetLogger($"{this.GetType().Name} - {deviceName}");
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_configurationManager = configurationManager;
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_configuration = _configurationManager.GetConfiguration(Name);
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}
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/// <summary>
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/// initialize instrument
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/// </summary>
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public void Initialize()
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{
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if (_state != State.Uninitialized)
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{
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_logger.Warn("Reinitialization of existing TCP Async Connection. Attempting to call Shutdown.");
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Shutdown();
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}
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_defaultReadTimeout = _configuration.GetConfigurationValue<uint>("TcpClient", "ReadTimeout", 25);
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_defaultSendTimeout = _configuration.GetConfigurationValue<uint>("TcpClient", "SendTimeout", 5000);
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_defaultReadBufferSize = _configuration.GetConfigurationValue<uint>("TcpClient", "BufferSize", 1024);
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_remoteAddress = _configuration.GetConfigurationValue("TcpClient", "RemoteAddress", "127.0.0.1");
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_port = _configuration.GetConfigurationValue("TcpClient", "Port", 0);
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if (string.IsNullOrEmpty(_remoteAddress))
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{
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_tcpListener = new TcpListener(IPAddress.Any, _port);
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_tcpListener.Start();
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_logger.Debug($"{MethodBase.GetCurrentMethod().Name} Started Listening on Port: {_port}");
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Task.Run(async () => await _tcpListener.AcceptTcpClientAsync()).ContinueWith(t =>
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{
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_tcpClient = t.Result;
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_remoteAddress = ((IPEndPoint)_tcpClient.Client.RemoteEndPoint).Address.ToString();
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_remotePort = ((IPEndPoint)_tcpClient.Client.RemoteEndPoint).Port;
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_logger.Debug($"{MethodBase.GetCurrentMethod().Name} Connection Established from Remote Address: {_remoteAddress}:{_remotePort}");
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// set timeouts
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_tcpClient.Client.SendTimeout = (int)_defaultSendTimeout;
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_tcpClient.Client.ReceiveTimeout = (int)_defaultReadTimeout;
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// get the stream
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_tcpIpStream = _tcpClient.GetStream();
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_state = State.Ready;
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});
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}
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else
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{
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_remotePort = _port;
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_tcpClient = new TcpClient(_remoteAddress, _remotePort);
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_logger.Debug($"{MethodBase.GetCurrentMethod().Name} Connected to Remote Address {_remoteAddress}:{_remotePort}");
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// set timeouts
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_tcpClient.Client.SendTimeout = (int)_defaultSendTimeout;
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_tcpClient.Client.ReceiveTimeout = (int)_defaultReadTimeout;
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// get the stream
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_tcpIpStream = _tcpClient.GetStream();
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_state = State.Ready;
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}
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}
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/// <summary>
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/// shuts down the device
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/// </summary>
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public void Shutdown()
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{
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_logger.Debug("Shutting down");
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_tcpClient?.Dispose();
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_tcpClient = null;
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_tcpListener?.Stop();
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_tcpListener = null;
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_tcpIpStream?.Dispose();
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_tcpIpStream = null;
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_state = State.Uninitialized;
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}
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/// <summary>
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/// Read data from the device asynchronously.
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/// </summary>
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/// <param name="dataRead">The buffer to put the data in</param>
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/// <returns>The number of bytes read</returns>
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public async Task<uint> ReadAsync(byte[] dataRead, CancellationToken token = default)
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{
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if (_tcpIpStream == null)
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return 0;
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if (_tcpIpStream.DataAvailable == true)
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{
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_state = State.Busy;
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var bytesRead = await _tcpIpStream.ReadAsync(dataRead, 0, dataRead.Length, token);
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_logger.Trace($"Reading Data, bytes received: {bytesRead}");
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_state = State.Ready;
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return (uint)bytesRead;
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}
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else
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{
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return 0;
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}
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}
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/// <summary>
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/// Read string from the device asynchronously.
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/// </summary>
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/// <param name="dataRead">The buffer to put the data in</param>
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/// <returns>The number of bytes read</returns>
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public async Task<string> ReadAsync(CancellationToken token = default)
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{
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if (_tcpIpStream == null)
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return null;
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if (_tcpIpStream.DataAvailable == true)
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{
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_state = State.Busy;
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var buffer = new byte[_defaultReadBufferSize];
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var bytesRead = await _tcpIpStream.ReadAsync(buffer, 0, buffer.Length, token);
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_state = State.Ready;
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var message = Encoding.UTF8.GetString(buffer, 0, bytesRead);
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_logger.Trace($"Reading Data, message received: {message}");
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return message;
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}
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else
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{
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return null;
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}
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}
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/// <summary>
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/// Sets the read timeout
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/// </summary>
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/// <param name="timeoutMs"></param>
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public void SetReadTimeout(uint timeoutMs)
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{
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_logger.Trace($"Setting Reader Timeout: {timeoutMs} Ms");
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_tcpClient.Client.ReceiveTimeout = (int)timeoutMs;
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}
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/// <summary>
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/// Write data to the device asynchronously
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/// </summary>
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/// <param name="dataToSend"></param>
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/// <param name="numBytesToWrite"></param>
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/// <returns></returns>
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public async Task<uint> WriteAsync(byte[] dataToSend, uint numBytesToWrite, CancellationToken token = default)
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{
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if (_tcpIpStream == null)
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return 0;
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_logger.Trace($"Writing message to ({_remoteAddress}:{_remotePort}), bytes: {dataToSend?.Length}");
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_state = State.Busy;
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await _tcpIpStream.WriteAsync(dataToSend, 0, (int)numBytesToWrite, token);
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_state = State.Ready;
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return numBytesToWrite;
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}
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/// <summary>
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/// Write string data to the device asynchronously
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/// </summary>
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/// <param name="message"></param>
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/// <returns></returns>
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public async Task WriteAsync(string message, CancellationToken token = default)
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{
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if (_tcpIpStream == null)
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return;
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_logger.Trace($"Writing message to ({_remoteAddress}:{_remotePort}), message: {message}");
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_state = State.Busy;
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var buffer = Encoding.UTF8.GetBytes(message);
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await _tcpIpStream.WriteAsync(buffer, 0, buffer.Length, token);
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_state = State.Ready;
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}
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/// <summary>
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/// Send Command and Get Response asynchronously
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/// </summary>
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/// <param name="message"></param>
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/// <param name="timeoutInMs"></param>
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/// <returns></returns>
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public async Task<string> SendCommandGetResponseAsync(string message, CancellationToken cancellationToken = default, int timeoutInMs = 5000)
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{
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if (_tcpIpStream == null)
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return null;
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_logger.Trace($"Sending command waiting for response from ({_remoteAddress}:{_remotePort}), message: {message}");
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using (var cts = new CancellationTokenSource(TimeSpan.FromMilliseconds(timeoutInMs)))
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{
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if (cancellationToken == default)
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{
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cancellationToken = cts.Token;
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}
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await WriteAsync(message, cancellationToken);
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string readResponse = await ReadAsync(cancellationToken);
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_logger.Trace($"Received response: {readResponse}");
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return readResponse;
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}
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}
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/// <summary>
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/// Send Command and Get Response asynchronously
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/// </summary>
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/// <param name="message"></param>
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/// <param name="timeoutInMs"></param>
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/// <returns></returns>
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public async Task<byte[]> SendCommandGetResponseAsync(byte[] data, CancellationToken cancellationToken = default, int timeoutInMs = 5000)
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{
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if (_tcpIpStream == null)
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return null;
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_logger.Trace($"Sending command waiting for response from ({_remoteAddress}:{_remotePort}), message: {data}");
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using (var cts = new CancellationTokenSource(TimeSpan.FromMilliseconds(timeoutInMs)))
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{
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if (cancellationToken == default)
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{
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cancellationToken = cts.Token;
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}
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await WriteAsync(data, (uint)data.Length, cancellationToken);
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byte[] buffer = new byte[_defaultReadBufferSize];
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uint bytesRead = await ReadAsync(buffer, cancellationToken);
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_logger.Trace($"Received response of size: {bytesRead}");
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return buffer;
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}
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}
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/// <summary>
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/// keeps reading until canceled via token,
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/// received messages sent to dataReceived function
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/// </summary>
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/// <param name="cancellationToken"></param>
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/// <param name="dataReceived"></param>
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/// <returns></returns>
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public async Task KeepReadingAsync(CancellationToken cancellationToken, Action<string> dataReceived)
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{
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_logger.Debug($"Starting continuous reading from {_remoteAddress}:{_remotePort} ...");
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byte[] buffer = new byte[_defaultReadBufferSize];
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while (!cancellationToken.IsCancellationRequested)
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{
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if (_tcpIpStream == null)
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{
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continue;
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}
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uint bytesRead = await ReadAsync(buffer, cancellationToken);
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if (bytesRead > 0)
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{
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string data = Encoding.UTF8.GetString(buffer, 0, (int)bytesRead);
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_logger.Trace($"Message received from {_remoteAddress}:{_remotePort}: {data}");
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dataReceived(data);
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Array.Clear(buffer, 0, (int)bytesRead);
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}
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}
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_logger.Debug($"Finished continuous reading from {_remoteAddress}:{_remotePort} ...");
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}
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/// <summary>
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/// keeps reading until canceled via token,
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/// received messages sent to dataReceived function
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/// </summary>
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/// <param name="cancellationToken"></param>
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/// <param name="dataReceived"></param>
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/// <returns></returns>
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public async Task KeepReadingAsync(CancellationToken cancellationToken, Action<byte[]> dataReceived)
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{
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_logger.Debug($"Starting continuous reading from {_remoteAddress}:{_remotePort} ...");
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byte[] buffer = new byte[_defaultReadBufferSize];
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while (!cancellationToken.IsCancellationRequested)
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{
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if (_tcpIpStream == null)
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{
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continue;
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}
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uint bytesRead = await ReadAsync(buffer, cancellationToken);
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if (bytesRead > 0)
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{
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_logger.Trace($"Message received from {_remoteAddress}:{_remotePort}: size {bytesRead}");
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byte[] bufferCopy = new byte[bytesRead];
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Array.Copy(buffer, bufferCopy, bytesRead);
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dataReceived(bufferCopy);
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Array.Clear(buffer, 0, (int)bytesRead);
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}
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}
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_logger.Debug($"Finished continuous reading from {_remoteAddress}:{_remotePort} ...");
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}
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#endregion
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}
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}
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