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Changes for pull request: two changes to auto reconnect on TCPclient. Line 259 if not disconnect called by user. and Line 317 add AutoReconnect to the If statement. Added 3 new class files. GenericSecureTcpIpClient, GenericSecureTcpIpServer, and GenericTcpIpServer. Lastly, I updated the name of the EventArgs.cs to be generic, and added the new class event args to that file.

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This commit is contained in:
Joshua Gutenplan
2017-03-18 17:03:49 -07:00
parent 31d0d1222a
commit de4801c123
16 changed files with 2121 additions and 5 deletions
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Pepperdash Core/Pepperdash Core.suo
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Pepperdash Core/Pepperdash Core/Comm/DynamicTCPServer.cs Normal file
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/*PepperDash Technology Corp.
JAG
Copyright: 2017
------------------------------------
***Notice of Ownership and Copyright***
The material in which this notice appears is the property of PepperDash Technology Corporation,
which claims copyright under the laws of the United States of America in the entire body of material
and in all parts thereof, regardless of the use to which it is being put. Any use, in whole or in part,
of this material by another party without the express written permission of PepperDash Technology Corporation is prohibited.
PepperDash Technology Corporation reserves all rights under applicable laws.
------------------------------------ */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Crestron.SimplSharp;
using Crestron.SimplSharp.CrestronSockets;
using PepperDash.Core;
namespace DynamicTCP
{
public class DynamicTCPServer : Device
{
#region Events
/// <summary>
/// Event for Receiving text
/// </summary>
public event EventHandler<CopyCoreForSimplpGenericCommMethodReceiveTextArgs> TextReceived;
/// <summary>
/// Event for client connection socket status change
/// </summary>
public event EventHandler<DynamicTCPSocketStatusChangeEventArgs> ClientConnectionChange;
/// <summary>
/// Event for Server State Change
/// </summary>
public event EventHandler<DynamicTCPServerStateChangedEventArgs> ServerStateChange;
#endregion
#region Properties/Variables
/// <summary>
/// Secure or unsecure TCP server. Defaults to Unsecure or standard TCP server without SSL
/// </summary>
public bool Secure { get; set; }
/// <summary>
/// S+ Helper for Secure bool. Parameter in SIMPL+ so there is no get, one way set from simpl+ Param to property in func main of SIMPL+
/// </summary>
public ushort USecure
{
set
{
if (value == 1)
Secure = true;
else if (value == 0)
Secure = false;
}
}
/// <summary>
/// Text representation of the Socket Status enum values for the server
/// </summary>
public string Status
{
get
{
if (Secure ? SecureServer != null : UnsecureServer != null)
return Secure ? SecureServer.State.ToString() : UnsecureServer.State.ToString();
else
return "";
}
}
/// <summary>
/// Bool showing if socket is connected
/// </summary>
public bool IsConnected
{
get
{
return (Secure ? SecureServer != null : UnsecureServer != null) &&
(Secure ? SecureServer.State == ServerState.SERVER_CONNECTED : UnsecureServer.State == ServerState.SERVER_CONNECTED);
}
}
/// <summary>
/// S+ helper for IsConnected
/// </summary>
public ushort UIsConnected
{
get { return (ushort)(IsConnected ? 1 : 0); }
}
/// <summary>
/// Bool showing if socket is connected
/// </summary>
public bool IsListening
{
get { return (Secure ? SecureServer != null : UnsecureServer != null) &&
(Secure ? SecureServer.State == ServerState.SERVER_LISTENING : UnsecureServer.State == ServerState.SERVER_LISTENING); }
}
/// <summary>
/// S+ helper for IsConnected
/// </summary>
public ushort UIsListening
{
get { return (ushort)(IsListening ? 1 : 0); }
}
public ushort MaxClients { get; set; } // should be set by parameter in SIMPL+ in the MAIN method, Should not ever need to be configurable
/// <summary>
/// Number of clients currently connected.
/// </summary>
public ushort NumberOfClientsConnected
{
get
{
if (Secure ? SecureServer != null : UnsecureServer != null)
return Secure ? (ushort)SecureServer.NumberOfClientsConnected : (ushort)UnsecureServer.NumberOfClientsConnected;
return 0;
}
}
/// <summary>
/// Port Server should listen on
/// </summary>
public int Port { get; set; }
/// <summary>
/// S+ helper for Port
/// </summary>
public ushort UPort
{
get { return Convert.ToUInt16(Port); }
set { Port = Convert.ToInt32(value); }
}
/// <summary>
/// Bool to show whether the server requires a preshared key. Must be set the same in the client, and if true shared keys must be identical on server/client
/// </summary>
public bool SharedKeyRequired { get; set; }
/// <summary>
/// S+ helper for requires shared key bool
/// </summary>
public ushort USharedKeyRequired
{
set
{
if (value == 1)
SharedKeyRequired = true;
else
SharedKeyRequired = false;
}
}
/// <summary>
/// SharedKey is sent for varification to the server. Shared key can be any text (255 char limit in SIMPL+ Module), but must match the Shared Key on the Server module.
/// If SharedKey changes while server is listening or clients are connected, disconnect and stop listening will be called
/// </summary>
public string SharedKey { get; set; }
/// <summary>
/// Heartbeat Required bool sets whether server disconnects client if heartbeat is not received
/// </summary>
public bool HeartbeatRequired { get; set; }
/// <summary>
/// S+ Helper for Heartbeat Required
/// </summary>
public ushort UHeartbeatRequired
{
set
{
if (value == 1)
HeartbeatRequired = true;
else
HeartbeatRequired = false;
}
}
/// <summary>
/// Milliseconds before server expects another heartbeat. Set by property HeartbeatRequiredIntervalInSeconds which is driven from S+
/// </summary>
public int HeartbeatRequiredIntervalMs { get; set; }
/// <summary>
/// Simpl+ Heartbeat Analog value in seconds
/// </summary>
public ushort HeartbeatRequiredIntervalInSeconds { set { HeartbeatRequiredIntervalMs = (value * 1000); } }
/// <summary>
/// String to Match for heartbeat. If null or empty any string will reset heartbeat timer
/// </summary>
public string HeartbeatStringToMatch { get; set; }
//private timers for Heartbeats per client
Dictionary<uint, CTimer> HeartbeatTimerDictionary = new Dictionary<uint, CTimer>();
//flags to show the secure server is waiting for client at index to send the shared key
List<uint> WaitingForSharedKey = new List<uint>();
//Store the connected client indexes
List<uint> ConnectedClientsIndexes = new List<uint>();
/// <summary>
/// Defaults to 2000
/// </summary>
public int BufferSize { get; set; }
/// <summary>
/// Private flag to note that the server has stopped intentionally
/// </summary>
private bool ServerStopped { get; set; }
//Servers
SecureTCPServer SecureServer;
TCPServer UnsecureServer;
#endregion
#region Constructors
/// <summary>
/// constructor
/// </summary>
public DynamicTCPServer()
: base("Uninitialized Dynamic TCP Server")
{
CrestronEnvironment.ProgramStatusEventHandler += new ProgramStatusEventHandler(CrestronEnvironment_ProgramStatusEventHandler);
BufferSize = 2000;
Secure = false;
}
#endregion
#region Methods - Server Actions
/// <summary>
/// Initialize Key for device using client name from SIMPL+. Called on Listen from SIMPL+
/// </summary>
/// <param name="key"></param>
public void Initialize(string key)
{
Key = key;
}
/// <summary>
/// Start listening on the specified port
/// </summary>
public void Listen()
{
try
{
if (Port < 1 || Port > 65535)
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "GenericSecureTcpClient '{0}': Invalid port", Key);
ErrorLog.Warn(string.Format("GenericSecureTcpClient '{0}': Invalid port", Key));
return;
}
if (string.IsNullOrEmpty(SharedKey) && SharedKeyRequired)
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "GenericSecureTcpClient '{0}': No Shared Key set", Key);
ErrorLog.Warn(string.Format("GenericSecureTcpClient '{0}': No Shared Key set", Key));
return;
}
if (IsListening)
return;
if (Secure)
{
SecureServer = new SecureTCPServer(Port, MaxClients);
SecureServer.SocketStatusChange += new SecureTCPServerSocketStatusChangeEventHandler(SecureServer_SocketStatusChange);
ServerStopped = false;
SecureServer.WaitForConnectionAsync(IPAddress.Any, SecureConnectCallback);
onServerStateChange();
Debug.Console(2, "Secure Server Status: {0}, Socket Status: {1}\r\n", SecureServer.State.ToString(), SecureServer.ServerSocketStatus);
}
else
{
UnsecureServer = new TCPServer(Port, MaxClients);
UnsecureServer.SocketStatusChange += new TCPServerSocketStatusChangeEventHandler(UnsecureServer_SocketStatusChange);
ServerStopped = false;
UnsecureServer.WaitForConnectionAsync(IPAddress.Any, UnsecureConnectCallback);
onServerStateChange();
Debug.Console(2, "Unsecure Server Status: {0}, Socket Status: {1}\r\n", UnsecureServer.State.ToString(), UnsecureServer.ServerSocketStatus);
}
}
catch (Exception ex)
{
ErrorLog.Error("Error with Dynamic Server: {0}", ex.ToString());
}
}
/// <summary>
/// Stop Listeneing
/// </summary>
public void StopListening()
{
Debug.Console(2, "Stopping Listener");
if (SecureServer != null)
SecureServer.Stop();
if (UnsecureServer != null)
UnsecureServer.Stop();
ServerStopped = true;
onServerStateChange();
}
/// <summary>
/// Disconnect All Clients
/// </summary>
public void DisconnectAllClients()
{
Debug.Console(2, "Disconnecting All Clients");
if (SecureServer != null)
SecureServer.DisconnectAll();
if (UnsecureServer != null)
UnsecureServer.DisconnectAll();
onConnectionChange();
onServerStateChange(); //State shows both listening and connected
}
/// <summary>
/// Broadcast text from server to all connected clients
/// </summary>
/// <param name="text"></param>
public void BroadcastText(string text)
{
if (ConnectedClientsIndexes.Count > 0)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(text);
if (Secure)
foreach (uint i in ConnectedClientsIndexes)
SecureServer.SendDataAsync(i, b, b.Length, SecureSendDataAsyncCallback);
else
foreach (uint i in ConnectedClientsIndexes)
UnsecureServer.SendDataAsync(i, b, b.Length, UnsecureSendDataAsyncCallback);
}
}
/// <summary>
/// Not sure this is useful in library, maybe Pro??
/// </summary>
/// <param name="text"></param>
/// <param name="clientIndex"></param>
public void SendTextToClient(string text, uint clientIndex)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(text);
if (Secure)
SecureServer.SendDataAsync(clientIndex, b, b.Length, SecureSendDataAsyncCallback);
else
UnsecureServer.SendDataAsync(clientIndex, b, b.Length, UnsecureSendDataAsyncCallback);
}
//private method to check heartbeat requirements and start or reset timer
void checkHeartbeat(uint clientIndex, string received)
{
if (HeartbeatRequired)
{
if (!string.IsNullOrEmpty(HeartbeatStringToMatch))
{
if (received == HeartbeatStringToMatch)
{
if (HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary[clientIndex].Reset(HeartbeatRequiredIntervalMs);
else
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
}
}
else
{
if (HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary[clientIndex].Reset(HeartbeatRequiredIntervalMs);
else
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
}
}
}
#endregion
#region Methods - HeartbeatTimer Callback
void HeartbeatTimer_CallbackFunction(object o)
{
uint clientIndex = (uint)o;
string address = Secure ? SecureServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex) :
UnsecureServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex);
ErrorLog.Error("Heartbeat not received for Client at IP: {0}, DISCONNECTING BECAUSE HEARTBEAT REQUIRED IS TRUE", address);
Debug.Console(2, "Heartbeat not received for Client at IP: {0}, DISCONNECTING BECAUSE HEARTBEAT REQUIRED IS TRUE", address);
SendTextToClient("Heartbeat not received by server, closing connection", clientIndex);
if (Secure)
SecureServer.Disconnect(clientIndex);
else
UnsecureServer.Disconnect(clientIndex);
HeartbeatTimerDictionary.Remove(clientIndex);
}
#endregion
#region Methods - Socket Status Changed Callbacks
/// <summary>
/// Secure Server Socket Status Changed Callback
/// </summary>
/// <param name="mySecureTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="serverSocketStatus"></param>
void SecureServer_SocketStatusChange(SecureTCPServer server, uint clientIndex, SocketStatus serverSocketStatus)
{
Debug.Console(2, "Client at {0} ServerSocketStatus {1}",
server.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex), serverSocketStatus.ToString());
if (server.GetServerSocketStatusForSpecificClient(clientIndex) == SocketStatus.SOCKET_STATUS_CONNECTED)
{
if (SharedKeyRequired && !WaitingForSharedKey.Contains(clientIndex))
WaitingForSharedKey.Add(clientIndex);
if (!ConnectedClientsIndexes.Contains(clientIndex))
ConnectedClientsIndexes.Add(clientIndex);
}
else
{
if (ConnectedClientsIndexes.Contains(clientIndex))
ConnectedClientsIndexes.Remove(clientIndex);
if (HeartbeatRequired && HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary.Remove(clientIndex);
}
if(SecureServer.ServerSocketStatus.ToString() != Status)
onConnectionChange();
}
/// <summary>
/// TCP Server (Unsecure) Socket Status Change Callback
/// </summary>
/// <param name="mySecureTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="serverSocketStatus"></param>
void UnsecureServer_SocketStatusChange(TCPServer server, uint clientIndex, SocketStatus serverSocketStatus)
{
Debug.Console(2, "Client at {0} ServerSocketStatus {1}",
server.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex), serverSocketStatus.ToString());
if (server.GetServerSocketStatusForSpecificClient(clientIndex) == SocketStatus.SOCKET_STATUS_CONNECTED)
{
if (SharedKeyRequired && !WaitingForSharedKey.Contains(clientIndex))
WaitingForSharedKey.Add(clientIndex);
if (!ConnectedClientsIndexes.Contains(clientIndex))
ConnectedClientsIndexes.Add(clientIndex);
}
else
{
if (ConnectedClientsIndexes.Contains(clientIndex))
ConnectedClientsIndexes.Remove(clientIndex);
if (HeartbeatRequired && HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary.Remove(clientIndex);
}
if (UnsecureServer.ServerSocketStatus.ToString() != Status)
onConnectionChange();
}
#endregion
#region Methods Connected Callbacks
/// <summary>
/// Secure TCP Client Connected to Secure Server Callback
/// </summary>
/// <param name="mySecureTCPServer"></param>
/// <param name="clientIndex"></param>
void SecureConnectCallback(SecureTCPServer mySecureTCPServer, uint clientIndex)
{
if (mySecureTCPServer.ClientConnected(clientIndex))
{
if (SharedKeyRequired)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(SharedKey + "\n");
mySecureTCPServer.SendDataAsync(clientIndex, b, b.Length, SecureSendDataAsyncCallback);
Debug.Console(2, "Sent Shared Key to client at {0}", mySecureTCPServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex));
}
if (HeartbeatRequired)
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
mySecureTCPServer.ReceiveDataAsync(clientIndex, SecureReceivedDataAsyncCallback);
if (mySecureTCPServer.State != ServerState.SERVER_LISTENING && MaxClients > 1 && !ServerStopped)
mySecureTCPServer.WaitForConnectionAsync(IPAddress.Any, SecureConnectCallback);
}
}
/// <summary>
/// Unsecure TCP Client Connected to Unsecure Server Callback
/// </summary>
/// <param name="myTCPServer"></param>
/// <param name="clientIndex"></param>
void UnsecureConnectCallback(TCPServer myTCPServer, uint clientIndex)
{
if (myTCPServer.ClientConnected(clientIndex))
{
if (SharedKeyRequired)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(SharedKey + "\n");
myTCPServer.SendDataAsync(clientIndex, b, b.Length, UnsecureSendDataAsyncCallback);
Debug.Console(2, "Sent Shared Key to client at {0}", myTCPServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex));
}
if (HeartbeatRequired)
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
myTCPServer.ReceiveDataAsync(clientIndex, UnsecureReceivedDataAsyncCallback);
if (myTCPServer.State != ServerState.SERVER_LISTENING && MaxClients > 1 && !ServerStopped)
myTCPServer.WaitForConnectionAsync(IPAddress.Any, UnsecureConnectCallback);
}
if (myTCPServer.State != ServerState.SERVER_LISTENING && MaxClients > 1 && !ServerStopped)
myTCPServer.WaitForConnectionAsync(IPAddress.Any, UnsecureConnectCallback);
}
#endregion
#region Methods - Send/Receive Callbacks
/// <summary>
/// Secure Send Data Async Callback
/// </summary>
/// <param name="mySecureTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="numberOfBytesSent"></param>
void SecureSendDataAsyncCallback(SecureTCPServer mySecureTCPServer, uint clientIndex, int numberOfBytesSent)
{
//Seems there is nothing to do here
}
/// <summary>
/// Unsecure Send Data Asyc Callback
/// </summary>
/// <param name="myTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="numberOfBytesSent"></param>
void UnsecureSendDataAsyncCallback(TCPServer myTCPServer, uint clientIndex, int numberOfBytesSent)
{
//Seems there is nothing to do here
}
/// <summary>
/// Secure Received Data Async Callback
/// </summary>
/// <param name="mySecureTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="numberOfBytesReceived"></param>
void SecureReceivedDataAsyncCallback(SecureTCPServer mySecureTCPServer, uint clientIndex, int numberOfBytesReceived)
{
if (numberOfBytesReceived > 0)
{
string received = "Nothing";
byte[] bytes = mySecureTCPServer.GetIncomingDataBufferForSpecificClient(clientIndex);
received = System.Text.Encoding.GetEncoding(28591).GetString(bytes, 0, numberOfBytesReceived);
if (WaitingForSharedKey.Contains(clientIndex))
{
received = received.Replace("\r", "");
received = received.Replace("\n", "");
if (received != SharedKey)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes("Shared key did not match server. Disconnecting");
Debug.Console(2, "Client at index {0} Shared key did not match the server, disconnecting client", clientIndex);
ErrorLog.Error("Client at index {0} Shared key did not match the server, disconnecting client", clientIndex);
mySecureTCPServer.SendDataAsync(clientIndex, b, b.Length, null);
mySecureTCPServer.Disconnect(clientIndex);
}
if (mySecureTCPServer.NumberOfClientsConnected > 0)
mySecureTCPServer.ReceiveDataAsync(SecureReceivedDataAsyncCallback);
WaitingForSharedKey.Remove(clientIndex);
byte[] skResponse = Encoding.GetEncoding(28591).GetBytes("Shared Key Match, Connected and ready for communication");
mySecureTCPServer.SendDataAsync(clientIndex, skResponse, skResponse.Length, null);
mySecureTCPServer.ReceiveDataAsync(SecureReceivedDataAsyncCallback);
}
else
{
mySecureTCPServer.ReceiveDataAsync(SecureReceivedDataAsyncCallback);
Debug.Console(2, "Secure Server Listening on Port: {0}, client IP: {1}, NumberOfBytesReceived: {2}, Received: {3}\r\n",
mySecureTCPServer.PortNumber, mySecureTCPServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex), numberOfBytesReceived, received);
onTextReceived(received);
}
checkHeartbeat(clientIndex, received);
}
if (mySecureTCPServer.GetServerSocketStatusForSpecificClient(clientIndex) == SocketStatus.SOCKET_STATUS_CONNECTED)
mySecureTCPServer.ReceiveDataAsync(clientIndex, SecureReceivedDataAsyncCallback);
}
/// <summary>
/// Unsecure Received Data Async Callback
/// </summary>
/// <param name="myTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="numberOfBytesReceived"></param>
void UnsecureReceivedDataAsyncCallback(TCPServer myTCPServer, uint clientIndex, int numberOfBytesReceived)
{
if (numberOfBytesReceived > 0)
{
string received = "Nothing";
byte[] bytes = myTCPServer.GetIncomingDataBufferForSpecificClient(clientIndex);
received = System.Text.Encoding.GetEncoding(28591).GetString(bytes, 0, numberOfBytesReceived);
if (WaitingForSharedKey.Contains(clientIndex))
{
received = received.Replace("\r", "");
received = received.Replace("\n", "");
if (received != SharedKey)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes("Shared key did not match server. Disconnecting");
Debug.Console(2, "Client at index {0} Shared key did not match the server, disconnecting client", clientIndex);
ErrorLog.Error("Client at index {0} Shared key did not match the server, disconnecting client", clientIndex);
myTCPServer.SendDataAsync(clientIndex, b, b.Length, null);
myTCPServer.Disconnect(clientIndex);
}
if (myTCPServer.NumberOfClientsConnected > 0)
myTCPServer.ReceiveDataAsync(UnsecureReceivedDataAsyncCallback);
WaitingForSharedKey.Remove(clientIndex);
byte[] skResponse = Encoding.GetEncoding(28591).GetBytes("Shared Key Match, Connected and ready for communication");
myTCPServer.SendDataAsync(clientIndex, skResponse, skResponse.Length, null);
myTCPServer.ReceiveDataAsync(UnsecureReceivedDataAsyncCallback);
}
else
{
myTCPServer.ReceiveDataAsync(UnsecureReceivedDataAsyncCallback);
Debug.Console(2, "Secure Server Listening on Port: {0}, client IP: {1}, NumberOfBytesReceived: {2}, Received: {3}\r\n",
myTCPServer.PortNumber, myTCPServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex), numberOfBytesReceived, received);
onTextReceived(received);
}
checkHeartbeat(clientIndex, received);
}
if (myTCPServer.GetServerSocketStatusForSpecificClient(clientIndex) == SocketStatus.SOCKET_STATUS_CONNECTED)
myTCPServer.ReceiveDataAsync(clientIndex, UnsecureReceivedDataAsyncCallback);
}
#endregion
#region Methods - EventHelpers/Callbacks
//Private Helper method to call the Connection Change Event
void onConnectionChange()
{
var handler = ClientConnectionChange;
if (handler != null)
{
if (Secure)
handler(this, new DynamicTCPSocketStatusChangeEventArgs(SecureServer, Secure));
else
handler(this, new DynamicTCPSocketStatusChangeEventArgs(UnsecureServer, Secure));
}
}
//Private Helper Method to call the Text Received Event
void onTextReceived(string text)
{
var handler = TextReceived;
if (handler != null)
handler(this, new CopyCoreForSimplpGenericCommMethodReceiveTextArgs(text));
}
//Private Helper Method to call the Server State Change Event
void onServerStateChange()
{
var handler = ServerStateChange;
if(handler != null)
{
if(Secure)
handler(this, new DynamicTCPServerStateChangedEventArgs(SecureServer, Secure));
else
handler(this, new DynamicTCPServerStateChangedEventArgs(UnsecureServer, Secure));
}
}
//Private Event Handler method to handle the closing of connections when the program stops
void CrestronEnvironment_ProgramStatusEventHandler(eProgramStatusEventType programEventType)
{
if (programEventType == eProgramStatusEventType.Stopping)
{
Debug.Console(1, this, "Program stopping. Closing server");
DisconnectAllClients();
StopListening();
}
}
#endregion
}
}

49
Pepperdash Core/Pepperdash Core/Comm/EventArgs.cs
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@@ -1,4 +1,14 @@
using System;
/*PepperDash Technology Corp.
Copyright: 2017
------------------------------------
***Notice of Ownership and Copyright***
The material in which this notice appears is the property of PepperDash Technology Corporation,
which claims copyright under the laws of the United States of America in the entire body of material
and in all parts thereof, regardless of the use to which it is being put. Any use, in whole or in part,
of this material by another party without the express written permission of PepperDash Technology Corporation is prohibited.
PepperDash Technology Corporation reserves all rights under applicable laws.
------------------------------------ */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
@@ -24,6 +34,43 @@ namespace PepperDash.Core
}
#endregion
#region DynamicTCPServerStateChangedEventArgs
public delegate void DynamicTCPServerStateChangedEventDelegate(object server);
public class DynamicTCPServerStateChangedEventArgs : EventArgs
{
public bool Secure { get; private set; }
public object Server { get; private set; }
public DynamicTCPServerStateChangedEventArgs() { }
public DynamicTCPServerStateChangedEventArgs(object server, bool secure)
{
Secure = secure;
Server = server;
}
}
#endregion
#region DynamicTCPSocketStatusChangeEventDelegate
public delegate void DynamicTCPSocketStatusChangeEventDelegate(object server);
public class DynamicTCPSocketStatusChangeEventArgs : EventArgs
{
public bool Secure { get; private set; }
public object Server { get; private set; }
public DynamicTCPSocketStatusChangeEventArgs() { }
public DynamicTCPSocketStatusChangeEventArgs(object server, bool secure)
{
Secure = secure;
Server = server;
}
}
#endregion
}

371
Pepperdash Core/Pepperdash Core/Comm/GenericSecureTcpIpClient.cs Normal file
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@@ -0,0 +1,371 @@
/*PepperDash Technology Corp.
JAG
Copyright: 2017
------------------------------------
***Notice of Ownership and Copyright***
The material in which this notice appears is the property of PepperDash Technology Corporation,
which claims copyright under the laws of the United States of America in the entire body of material
and in all parts thereof, regardless of the use to which it is being put. Any use, in whole or in part,
of this material by another party without the express written permission of PepperDash Technology Corporation is prohibited.
PepperDash Technology Corporation reserves all rights under applicable laws.
------------------------------------ */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using Crestron.SimplSharp;
using Crestron.SimplSharp.CrestronSockets;
namespace PepperDash.Core
{
public class GenericSecureTcpIpClient : Device, ISocketStatus, IAutoReconnect
{
#region Events
public event EventHandler<GenericCommMethodReceiveBytesArgs> BytesReceived;
public event EventHandler<GenericCommMethodReceiveTextArgs> TextReceived;
public event EventHandler<GenericSocketStatusChageEventArgs> ConnectionChange;
#endregion
#region Properties & Variables
/// <summary>
/// Address of server
/// </summary>
public string Hostname { get; set; }
/// <summary>
/// Port on server
/// </summary>
public int Port { get; set; }
/// <summary>
/// S+ helper
/// </summary>
public ushort UPort
{
get { return Convert.ToUInt16(Port); }
set { Port = Convert.ToInt32(value); }
}
/// <summary>
/// Bool to show whether the server requires a preshared key. This is used in the DynamicTCPServer class
/// </summary>
public bool SharedKeyRequired { get; set; }
/// <summary>
/// S+ helper for requires shared key bool
/// </summary>
public ushort USharedKeyRequired
{
set
{
if (value == 1)
SharedKeyRequired = true;
else
SharedKeyRequired = false;
}
}
/// <summary>
/// SharedKey is sent for varification to the server. Shared key can be any text (255 char limit in SIMPL+ Module), but must match the Shared Key on the Server module
/// </summary>
public string SharedKey { get; set; }
/// <summary>
/// flag to show the client is waiting for the server to send the shared key
/// </summary>
private bool WaitingForSharedKeyResponse { get; set; }
/// <summary>
/// Defaults to 2000
/// </summary>
public int BufferSize { get; set; }
/// <summary>
/// Bool showing if socket is connected
/// </summary>
public bool IsConnected
{
get
{
return (Client != null) && (Client.ClientStatus == SocketStatus.SOCKET_STATUS_CONNECTED);
}
}
/// <summary>
/// S+ helper for IsConnected
/// </summary>
public ushort UIsConnected
{
get { return (ushort)(IsConnected ? 1 : 0); }
}
/// <summary>
/// Client socket status Read only
/// </summary>
public SocketStatus ClientStatus
{
get
{
if (Client == null)
return SocketStatus.SOCKET_STATUS_NO_CONNECT;
return Client.ClientStatus;
}
}
/// <summary>
/// Contains the familiar Simpl analog status values. This drives the ConnectionChange event
/// and IsConnected would be true when this == 2.
/// </summary>
public ushort UStatus
{
get { return (ushort)ClientStatus; }
}
/// <summary>
/// Status text shows the message associated with socket status
/// </summary>
public string ClientStatusText { get { return ClientStatus.ToString(); } }
/// <summary>
/// bool to track if auto reconnect should be set on the socket
/// </summary>
public bool AutoReconnect { get; set; }
/// <summary>
/// S+ helper for AutoReconnect
/// </summary>
public ushort UAutoReconnect
{
get { return (ushort)(AutoReconnect ? 1 : 0); }
set { AutoReconnect = value == 1; }
}
/// <summary>
/// Milliseconds to wait before attempting to reconnect. Defaults to 5000
/// </summary>
public int AutoReconnectIntervalMs { get; set; }
/// <summary>
/// Flag Set only when the disconnect method is called.
/// </summary>
bool DisconnectCalledByUser;
/// <summary>
/// Connected bool
/// </summary>
public bool Connected
{
get { return (Client != null) && (Client.ClientStatus == SocketStatus.SOCKET_STATUS_CONNECTED); }
}
CTimer RetryTimer; //private Timer for auto reconnect
SecureTCPClient Client; //Secure Client Class
#endregion
#region Constructors
//Base class constructor
public GenericSecureTcpIpClient(string key, string address, int port, int bufferSize)
: base(key)
{
Hostname = address;
Port = port;
BufferSize = bufferSize;
AutoReconnectIntervalMs = 5000;
}
//base class constructor
public GenericSecureTcpIpClient()
: base("Uninitialized DynamicTcpClient")
{
CrestronEnvironment.ProgramStatusEventHandler += new ProgramStatusEventHandler(CrestronEnvironment_ProgramStatusEventHandler);
AutoReconnectIntervalMs = 5000;
BufferSize = 2000;
}
#endregion
#region Methods
/// <summary>
/// Just to help S+ set the key
/// </summary>
public void Initialize(string key)
{
Key = key;
}
/// <summary>
/// Handles closing this up when the program shuts down
/// </summary>
void CrestronEnvironment_ProgramStatusEventHandler(eProgramStatusEventType programEventType)
{
if (programEventType == eProgramStatusEventType.Stopping)
{
if (Client != null)
{
Debug.Console(1, this, "Program stopping. Closing connection");
Client.DisconnectFromServer();
Client.Dispose();
}
}
}
/// <summary>
/// Connect Method. Will return if already connected. Will write errors if missing address, port, or unique key/name.
/// </summary>
public void Connect()
{
if (IsConnected)
return;
if (string.IsNullOrEmpty(Hostname))
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "DynamicTcpClient '{0}': No address set", Key);
ErrorLog.Warn(string.Format("DynamicTcpClient '{0}': No address set", Key));
return;
}
if (Port < 1 || Port > 65535)
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "DynamicTcpClient '{0}': Invalid port", Key);
ErrorLog.Warn(string.Format("DynamicTcpClient '{0}': Invalid port", Key));
return;
}
if (string.IsNullOrEmpty(SharedKey) && SharedKeyRequired)
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "DynamicTcpClient '{0}': No Shared Key set", Key);
ErrorLog.Warn(string.Format("DynamicTcpClient '{0}': No Shared Key set", Key));
return;
}
Client = new SecureTCPClient(Hostname, Port, BufferSize);
Client.SocketStatusChange += SecureClient_SocketStatusChange;
DisconnectCalledByUser = false;
if (SharedKeyRequired)
WaitingForSharedKeyResponse = true;
Client.ConnectToServer();
}
/// <summary>
/// Disconnect client. Does not dispose.
/// </summary>
public void Disconnect()
{
DisconnectCalledByUser = true;
if(Client != null)
Client.DisconnectFromServer();
}
/// <summary>
/// callback after connection made
/// </summary>
/// <param name="o"></param>
void ConnectToServerCallback(object o)
{
Client.ConnectToServer();
if (Client.ClientStatus != SocketStatus.SOCKET_STATUS_CONNECTED)
WaitAndTryReconnect();
}
/// <summary>
/// Called from Socket Status change if auto reconnect and socket disconnected (Not disconnected by user)
/// </summary>
void WaitAndTryReconnect()
{
Client.DisconnectFromServer();
Debug.Console(2, "Attempting reconnect, status={0}", Client.ClientStatus);
if (!DisconnectCalledByUser)
RetryTimer = new CTimer(ConnectToServerCallback, AutoReconnectIntervalMs);
}
/// <summary>
/// Receive callback
/// </summary>
/// <param name="client"></param>
/// <param name="numBytes"></param>
void SecureReceive(SecureTCPClient client, int numBytes)
{
if (numBytes > 0)
{
var bytes = client.IncomingDataBuffer.Take(numBytes).ToArray();
var str = Encoding.GetEncoding(28591).GetString(bytes, 0, bytes.Length);
if (WaitingForSharedKeyResponse && SharedKeyRequired)
{
if (str != (SharedKey + "\n"))
{
WaitingForSharedKeyResponse = false;
client.DisconnectFromServer();
CrestronConsole.PrintLine("Client {0} was disconnected from server because the server did not respond with a matching shared key after connection", Key);
ErrorLog.Error("Client {0} was disconnected from server because the server did not respond with a matching shared key after connection", Key);
return;
}
else
{
WaitingForSharedKeyResponse = false;
CrestronConsole.PrintLine("Client {0} successfully connected to the server and received the Shared Key. Ready for communication", Key);
}
}
else
{
var bytesHandler = BytesReceived;
if (bytesHandler != null)
bytesHandler(this, new GenericCommMethodReceiveBytesArgs(bytes));
var textHandler = TextReceived;
if (textHandler != null)
{
textHandler(this, new GenericCommMethodReceiveTextArgs(str));
}
}
}
client.ReceiveDataAsync(SecureReceive);
}
/// <summary>
/// General send method
/// </summary>
public void SendText(string text)
{
var bytes = Encoding.GetEncoding(28591).GetBytes(text);
Client.SendData(bytes, bytes.Length);
}
public void SendBytes(byte[] bytes)
{
Client.SendData(bytes, bytes.Length);
}
/// <summary>
/// SocketStatusChange Callback
/// </summary>
/// <param name="client"></param>
/// <param name="clientSocketStatus"></param>
void SecureClient_SocketStatusChange(SecureTCPClient client, SocketStatus clientSocketStatus)
{
Debug.Console(2, this, "Socket status change {0} ({1})", clientSocketStatus, ClientStatusText);
if (client.ClientStatus != SocketStatus.SOCKET_STATUS_CONNECTED && !DisconnectCalledByUser && AutoReconnect)
WaitAndTryReconnect();
// Probably doesn't need to be a switch since all other cases were eliminated
switch (clientSocketStatus)
{
case SocketStatus.SOCKET_STATUS_CONNECTED:
client.ReceiveDataAsync(SecureReceive);
if(SharedKeyRequired)
SendText(SharedKey + "\n");
DisconnectCalledByUser = false;
break;
}
var handler = ConnectionChange;
if (handler != null)
ConnectionChange(this, new GenericSocketStatusChageEventArgs(this));
}
#endregion
}
}

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/*PepperDash Technology Corp.
JAG
Copyright: 2017
------------------------------------
***Notice of Ownership and Copyright***
The material in which this notice appears is the property of PepperDash Technology Corporation,
which claims copyright under the laws of the United States of America in the entire body of material
and in all parts thereof, regardless of the use to which it is being put. Any use, in whole or in part,
of this material by another party without the express written permission of PepperDash Technology Corporation is prohibited.
PepperDash Technology Corporation reserves all rights under applicable laws.
------------------------------------ */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Crestron.SimplSharp;
using Crestron.SimplSharp.CrestronSockets;
namespace PepperDash.Core
{
public class GenericSecureTcpIpServer : Device
{
#region Events
/// <summary>
/// Event for Receiving text
/// </summary>
public event EventHandler<GenericCommMethodReceiveTextArgs> TextReceived;
/// <summary>
/// Event for client connection socket status change
/// </summary>
public event EventHandler<DynamicTCPSocketStatusChangeEventArgs> ClientConnectionChange;
/// <summary>
/// Event for Server State Change
/// </summary>
public event EventHandler<DynamicTCPServerStateChangedEventArgs> ServerStateChange;
#endregion
#region Properties/Variables
/// <summary>
/// Text representation of the Socket Status enum values for the server
/// </summary>
public string Status
{
get
{
if (Server != null)
return Server.State.ToString();
else
return ServerState.SERVER_NOT_LISTENING.ToString();
}
}
/// <summary>
/// Bool showing if socket is connected
/// </summary>
public bool IsConnected
{
get { return (Server != null) && (Server.State == ServerState.SERVER_CONNECTED); }
}
/// <summary>
/// S+ helper for IsConnected
/// </summary>
public ushort UIsConnected
{
get { return (ushort)(IsConnected ? 1 : 0); }
}
/// <summary>
/// Bool showing if socket is connected
/// </summary>
public bool IsListening
{
get { return (Server != null) && (Server.State == ServerState.SERVER_LISTENING); }
}
/// <summary>
/// S+ helper for IsConnected
/// </summary>
public ushort UIsListening
{
get { return (ushort)(IsListening ? 1 : 0); }
}
public ushort MaxClients { get; set; } // should be set by parameter in SIMPL+ in the MAIN method, Should not ever need to be configurable
/// <summary>
/// Number of clients currently connected.
/// </summary>
public ushort NumberOfClientsConnected
{
get
{
if (Server != null)
return (ushort)Server.NumberOfClientsConnected;
return 0;
}
}
/// <summary>
/// Port Server should listen on
/// </summary>
public int Port { get; set; }
/// <summary>
/// S+ helper for Port
/// </summary>
public ushort UPort
{
get { return Convert.ToUInt16(Port); }
set { Port = Convert.ToInt32(value); }
}
/// <summary>
/// Bool to show whether the server requires a preshared key. Must be set the same in the client, and if true shared keys must be identical on server/client
/// </summary>
public bool SharedKeyRequired { get; set; }
/// <summary>
/// S+ helper for requires shared key bool
/// </summary>
public ushort USharedKeyRequired
{
set
{
if (value == 1)
SharedKeyRequired = true;
else
SharedKeyRequired = false;
}
}
/// <summary>
/// SharedKey is sent for varification to the server. Shared key can be any text (255 char limit in SIMPL+ Module), but must match the Shared Key on the Server module.
/// If SharedKey changes while server is listening or clients are connected, disconnect and stop listening will be called
/// </summary>
public string SharedKey { get; set; }
/// <summary>
/// Heartbeat Required bool sets whether server disconnects client if heartbeat is not received
/// </summary>
public bool HeartbeatRequired { get; set; }
/// <summary>
/// S+ Helper for Heartbeat Required
/// </summary>
public ushort UHeartbeatRequired
{
set
{
if (value == 1)
HeartbeatRequired = true;
else
HeartbeatRequired = false;
}
}
/// <summary>
/// Milliseconds before server expects another heartbeat. Set by property HeartbeatRequiredIntervalInSeconds which is driven from S+
/// </summary>
public int HeartbeatRequiredIntervalMs { get; set; }
/// <summary>
/// Simpl+ Heartbeat Analog value in seconds
/// </summary>
public ushort HeartbeatRequiredIntervalInSeconds { set { HeartbeatRequiredIntervalMs = (value * 1000); } }
/// <summary>
/// String to Match for heartbeat. If null or empty any string will reset heartbeat timer
/// </summary>
public string HeartbeatStringToMatch { get; set; }
//private timers for Heartbeats per client
Dictionary<uint, CTimer> HeartbeatTimerDictionary = new Dictionary<uint, CTimer>();
//flags to show the server is waiting for client at index to send the shared key
List<uint> WaitingForSharedKey = new List<uint>();
//Store the connected client indexes
List<uint> ConnectedClientsIndexes = new List<uint>();
/// <summary>
/// Defaults to 2000
/// </summary>
public int BufferSize { get; set; }
/// <summary>
/// Private flag to note that the server has stopped intentionally
/// </summary>
private bool ServerStopped { get; set; }
//Servers
SecureTCPServer Server;
#endregion
#region Constructors
/// <summary>
/// constructor
/// </summary>
public GenericSecureTcpIpServer()
: base("Uninitialized Dynamic TCP Server")
{
CrestronEnvironment.ProgramStatusEventHandler += new ProgramStatusEventHandler(CrestronEnvironment_ProgramStatusEventHandler);
BufferSize = 2000;
}
#endregion
#region Methods - Server Actions
/// <summary>
/// Initialize Key for device using client name from SIMPL+. Called on Listen from SIMPL+
/// </summary>
/// <param name="key"></param>
public void Initialize(string key)
{
Key = key;
}
/// <summary>
/// Start listening on the specified port
/// </summary>
public void Listen()
{
try
{
if (Port < 1 || Port > 65535)
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "Server '{0}': Invalid port", Key);
ErrorLog.Warn(string.Format("Server '{0}': Invalid port", Key));
return;
}
if (string.IsNullOrEmpty(SharedKey) && SharedKeyRequired)
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "Server '{0}': No Shared Key set", Key);
ErrorLog.Warn(string.Format("Server '{0}': No Shared Key set", Key));
return;
}
if (IsListening)
return;
Server = new SecureTCPServer(Port, MaxClients);
Server.SocketStatusChange += new SecureTCPServerSocketStatusChangeEventHandler(SocketStatusChange);
ServerStopped = false;
Server.WaitForConnectionAsync(IPAddress.Any, ConnectCallback);
onServerStateChange();
Debug.Console(2, "Server Status: {0}, Socket Status: {1}\r\n", Server.State.ToString(), Server.ServerSocketStatus);
}
catch (Exception ex)
{
ErrorLog.Error("Error with Dynamic Server: {0}", ex.ToString());
}
}
/// <summary>
/// Stop Listeneing
/// </summary>
public void StopListening()
{
Debug.Console(2, "Stopping Listener");
if (Server != null)
Server.Stop();
ServerStopped = true;
onServerStateChange();
}
/// <summary>
/// Disconnect All Clients
/// </summary>
public void DisconnectAllClients()
{
Debug.Console(2, "Disconnecting All Clients");
if (Server != null)
Server.DisconnectAll();
onConnectionChange();
onServerStateChange(); //State shows both listening and connected
}
/// <summary>
/// Broadcast text from server to all connected clients
/// </summary>
/// <param name="text"></param>
public void BroadcastText(string text)
{
if (ConnectedClientsIndexes.Count > 0)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(text);
foreach (uint i in ConnectedClientsIndexes)
Server.SendDataAsync(i, b, b.Length, SendDataAsyncCallback);
}
}
/// <summary>
/// Not sure this is useful in library, maybe Pro??
/// </summary>
/// <param name="text"></param>
/// <param name="clientIndex"></param>
public void SendTextToClient(string text, uint clientIndex)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(text);
Server.SendDataAsync(clientIndex, b, b.Length, SendDataAsyncCallback);
}
//private method to check heartbeat requirements and start or reset timer
void checkHeartbeat(uint clientIndex, string received)
{
if (HeartbeatRequired)
{
if (!string.IsNullOrEmpty(HeartbeatStringToMatch))
{
if (received == HeartbeatStringToMatch)
{
if (HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary[clientIndex].Reset(HeartbeatRequiredIntervalMs);
else
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
}
}
else
{
if (HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary[clientIndex].Reset(HeartbeatRequiredIntervalMs);
else
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
}
}
}
#endregion
#region Methods - Callbacks
/// <summary>
/// Callback to disconnect if heartbeat timer finishes without being reset
/// </summary>
/// <param name="o"></param>
void HeartbeatTimer_CallbackFunction(object o)
{
uint clientIndex = (uint)o;
string address = Server.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex);
ErrorLog.Error("Heartbeat not received for Client at IP: {0}, DISCONNECTING BECAUSE HEARTBEAT REQUIRED IS TRUE", address);
Debug.Console(2, "Heartbeat not received for Client at IP: {0}, DISCONNECTING BECAUSE HEARTBEAT REQUIRED IS TRUE", address);
SendTextToClient("Heartbeat not received by server, closing connection", clientIndex);
Server.Disconnect(clientIndex);
HeartbeatTimerDictionary.Remove(clientIndex);
}
/// <summary>
/// TCP Server Socket Status Change Callback
/// </summary>
/// <param name="server"></param>
/// <param name="clientIndex"></param>
/// <param name="serverSocketStatus"></param>
void SocketStatusChange(SecureTCPServer server, uint clientIndex, SocketStatus serverSocketStatus)
{
Debug.Console(2, "Client at {0} ServerSocketStatus {1}",
server.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex), serverSocketStatus.ToString());
if (server.GetServerSocketStatusForSpecificClient(clientIndex) == SocketStatus.SOCKET_STATUS_CONNECTED)
{
if (SharedKeyRequired && !WaitingForSharedKey.Contains(clientIndex))
WaitingForSharedKey.Add(clientIndex);
if (!ConnectedClientsIndexes.Contains(clientIndex))
ConnectedClientsIndexes.Add(clientIndex);
}
else
{
if (ConnectedClientsIndexes.Contains(clientIndex))
ConnectedClientsIndexes.Remove(clientIndex);
if (HeartbeatRequired && HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary.Remove(clientIndex);
}
if (Server.ServerSocketStatus.ToString() != Status)
onConnectionChange();
}
/// <summary>
/// TCP Client Connected to Server Callback
/// </summary>
/// <param name="mySecureTCPServer"></param>
/// <param name="clientIndex"></param>
void ConnectCallback(SecureTCPServer mySecureTCPServer, uint clientIndex)
{
if (mySecureTCPServer.ClientConnected(clientIndex))
{
if (SharedKeyRequired)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(SharedKey + "\n");
mySecureTCPServer.SendDataAsync(clientIndex, b, b.Length, SendDataAsyncCallback);
Debug.Console(2, "Sent Shared Key to client at {0}", mySecureTCPServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex));
}
if (HeartbeatRequired)
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
mySecureTCPServer.ReceiveDataAsync(clientIndex, ReceivedDataAsyncCallback);
if (mySecureTCPServer.State != ServerState.SERVER_LISTENING && MaxClients > 1 && !ServerStopped)
mySecureTCPServer.WaitForConnectionAsync(IPAddress.Any, ConnectCallback);
}
if (mySecureTCPServer.State != ServerState.SERVER_LISTENING && MaxClients > 1 && !ServerStopped)
mySecureTCPServer.WaitForConnectionAsync(IPAddress.Any, ConnectCallback);
}
/// <summary>
/// Send Data Asyc Callback
/// </summary>
/// <param name="mySecureTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="numberOfBytesSent"></param>
void SendDataAsyncCallback(SecureTCPServer mySecureTCPServer, uint clientIndex, int numberOfBytesSent)
{
//Seems there is nothing to do here
}
/// <summary>
/// Received Data Async Callback
/// </summary>
/// <param name="mySecureTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="numberOfBytesReceived"></param>
void ReceivedDataAsyncCallback(SecureTCPServer mySecureTCPServer, uint clientIndex, int numberOfBytesReceived)
{
if (numberOfBytesReceived > 0)
{
string received = "Nothing";
byte[] bytes = mySecureTCPServer.GetIncomingDataBufferForSpecificClient(clientIndex);
received = System.Text.Encoding.GetEncoding(28591).GetString(bytes, 0, numberOfBytesReceived);
if (WaitingForSharedKey.Contains(clientIndex))
{
received = received.Replace("\r", "");
received = received.Replace("\n", "");
if (received != SharedKey)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes("Shared key did not match server. Disconnecting");
Debug.Console(2, "Client at index {0} Shared key did not match the server, disconnecting client", clientIndex);
ErrorLog.Error("Client at index {0} Shared key did not match the server, disconnecting client", clientIndex);
mySecureTCPServer.SendDataAsync(clientIndex, b, b.Length, null);
mySecureTCPServer.Disconnect(clientIndex);
}
if (mySecureTCPServer.NumberOfClientsConnected > 0)
mySecureTCPServer.ReceiveDataAsync(ReceivedDataAsyncCallback);
WaitingForSharedKey.Remove(clientIndex);
byte[] skResponse = Encoding.GetEncoding(28591).GetBytes("Shared Key Match, Connected and ready for communication");
mySecureTCPServer.SendDataAsync(clientIndex, skResponse, skResponse.Length, null);
mySecureTCPServer.ReceiveDataAsync(ReceivedDataAsyncCallback);
}
else
{
mySecureTCPServer.ReceiveDataAsync(ReceivedDataAsyncCallback);
Debug.Console(2, "Server Listening on Port: {0}, client IP: {1}, NumberOfBytesReceived: {2}, Received: {3}\r\n",
mySecureTCPServer.PortNumber, mySecureTCPServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex), numberOfBytesReceived, received);
onTextReceived(received);
}
checkHeartbeat(clientIndex, received);
}
if (mySecureTCPServer.GetServerSocketStatusForSpecificClient(clientIndex) == SocketStatus.SOCKET_STATUS_CONNECTED)
mySecureTCPServer.ReceiveDataAsync(clientIndex, ReceivedDataAsyncCallback);
}
#endregion
#region Methods - EventHelpers/Callbacks
//Private Helper method to call the Connection Change Event
void onConnectionChange()
{
var handler = ClientConnectionChange;
if (handler != null)
handler(this, new DynamicTCPSocketStatusChangeEventArgs(Server, false));
}
//Private Helper Method to call the Text Received Event
void onTextReceived(string text)
{
var handler = TextReceived;
if (handler != null)
handler(this, new GenericCommMethodReceiveTextArgs(text));
}
//Private Helper Method to call the Server State Change Event
void onServerStateChange()
{
var handler = ServerStateChange;
if (handler != null)
handler(this, new DynamicTCPServerStateChangedEventArgs(Server, false));
}
//Private Event Handler method to handle the closing of connections when the program stops
void CrestronEnvironment_ProgramStatusEventHandler(eProgramStatusEventType programEventType)
{
if (programEventType == eProgramStatusEventType.Stopping)
{
Debug.Console(1, this, "Program stopping. Closing server");
DisconnectAllClients();
StopListening();
}
}
#endregion
}
}

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Pepperdash Core/Pepperdash Core/Comm/GenericTcpIpServer.cs Normal file
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@@ -0,0 +1,505 @@
/*PepperDash Technology Corp.
JAG
Copyright: 2017
------------------------------------
***Notice of Ownership and Copyright***
The material in which this notice appears is the property of PepperDash Technology Corporation,
which claims copyright under the laws of the United States of America in the entire body of material
and in all parts thereof, regardless of the use to which it is being put. Any use, in whole or in part,
of this material by another party without the express written permission of PepperDash Technology Corporation is prohibited.
PepperDash Technology Corporation reserves all rights under applicable laws.
------------------------------------ */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Crestron.SimplSharp;
using Crestron.SimplSharp.CrestronSockets;
namespace PepperDash.Core
{
public class GenericTcpIpServer : Device
{
#region Events
/// <summary>
/// Event for Receiving text
/// </summary>
public event EventHandler<GenericCommMethodReceiveTextArgs> TextReceived;
/// <summary>
/// Event for client connection socket status change
/// </summary>
public event EventHandler<DynamicTCPSocketStatusChangeEventArgs> ClientConnectionChange;
/// <summary>
/// Event for Server State Change
/// </summary>
public event EventHandler<DynamicTCPServerStateChangedEventArgs> ServerStateChange;
#endregion
#region Properties/Variables
/// <summary>
/// Text representation of the Socket Status enum values for the server
/// </summary>
public string Status
{
get
{
if (Server != null)
return Server.State.ToString();
else
return ServerState.SERVER_NOT_LISTENING.ToString();
}
}
/// <summary>
/// Bool showing if socket is connected
/// </summary>
public bool IsConnected
{
get { return (Server != null) && (Server.State == ServerState.SERVER_CONNECTED); }
}
/// <summary>
/// S+ helper for IsConnected
/// </summary>
public ushort UIsConnected
{
get { return (ushort)(IsConnected ? 1 : 0); }
}
/// <summary>
/// Bool showing if socket is connected
/// </summary>
public bool IsListening
{
get { return (Server != null) && (Server.State == ServerState.SERVER_LISTENING); }
}
/// <summary>
/// S+ helper for IsConnected
/// </summary>
public ushort UIsListening
{
get { return (ushort)(IsListening ? 1 : 0); }
}
public ushort MaxClients { get; set; } // should be set by parameter in SIMPL+ in the MAIN method, Should not ever need to be configurable
/// <summary>
/// Number of clients currently connected.
/// </summary>
public ushort NumberOfClientsConnected
{
get
{
if (Server != null)
return (ushort)Server.NumberOfClientsConnected;
return 0;
}
}
/// <summary>
/// Port Server should listen on
/// </summary>
public int Port { get; set; }
/// <summary>
/// S+ helper for Port
/// </summary>
public ushort UPort
{
get { return Convert.ToUInt16(Port); }
set { Port = Convert.ToInt32(value); }
}
/// <summary>
/// Bool to show whether the server requires a preshared key. Must be set the same in the client, and if true shared keys must be identical on server/client
/// </summary>
public bool SharedKeyRequired { get; set; }
/// <summary>
/// S+ helper for requires shared key bool
/// </summary>
public ushort USharedKeyRequired
{
set
{
if (value == 1)
SharedKeyRequired = true;
else
SharedKeyRequired = false;
}
}
/// <summary>
/// SharedKey is sent for varification to the server. Shared key can be any text (255 char limit in SIMPL+ Module), but must match the Shared Key on the Server module.
/// If SharedKey changes while server is listening or clients are connected, disconnect and stop listening will be called
/// </summary>
public string SharedKey { get; set; }
/// <summary>
/// Heartbeat Required bool sets whether server disconnects client if heartbeat is not received
/// </summary>
public bool HeartbeatRequired { get; set; }
/// <summary>
/// S+ Helper for Heartbeat Required
/// </summary>
public ushort UHeartbeatRequired
{
set
{
if (value == 1)
HeartbeatRequired = true;
else
HeartbeatRequired = false;
}
}
/// <summary>
/// Milliseconds before server expects another heartbeat. Set by property HeartbeatRequiredIntervalInSeconds which is driven from S+
/// </summary>
public int HeartbeatRequiredIntervalMs { get; set; }
/// <summary>
/// Simpl+ Heartbeat Analog value in seconds
/// </summary>
public ushort HeartbeatRequiredIntervalInSeconds { set { HeartbeatRequiredIntervalMs = (value * 1000); } }
/// <summary>
/// String to Match for heartbeat. If null or empty any string will reset heartbeat timer
/// </summary>
public string HeartbeatStringToMatch { get; set; }
//private timers for Heartbeats per client
Dictionary<uint, CTimer> HeartbeatTimerDictionary = new Dictionary<uint, CTimer>();
//flags to show the server is waiting for client at index to send the shared key
List<uint> WaitingForSharedKey = new List<uint>();
//Store the connected client indexes
List<uint> ConnectedClientsIndexes = new List<uint>();
/// <summary>
/// Defaults to 2000
/// </summary>
public int BufferSize { get; set; }
/// <summary>
/// Private flag to note that the server has stopped intentionally
/// </summary>
private bool ServerStopped { get; set; }
//Servers
TCPServer Server;
#endregion
#region Constructors
/// <summary>
/// constructor
/// </summary>
public GenericTcpIpServer()
: base("Uninitialized Dynamic TCP Server")
{
CrestronEnvironment.ProgramStatusEventHandler += new ProgramStatusEventHandler(CrestronEnvironment_ProgramStatusEventHandler);
BufferSize = 2000;
}
#endregion
#region Methods - Server Actions
/// <summary>
/// Initialize Key for device using client name from SIMPL+. Called on Listen from SIMPL+
/// </summary>
/// <param name="key"></param>
public void Initialize(string key)
{
Key = key;
}
/// <summary>
/// Start listening on the specified port
/// </summary>
public void Listen()
{
try
{
if (Port < 1 || Port > 65535)
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "Server '{0}': Invalid port", Key);
ErrorLog.Warn(string.Format("Server '{0}': Invalid port", Key));
return;
}
if (string.IsNullOrEmpty(SharedKey) && SharedKeyRequired)
{
Debug.Console(1, Debug.ErrorLogLevel.Warning, "Server '{0}': No Shared Key set", Key);
ErrorLog.Warn(string.Format("Server '{0}': No Shared Key set", Key));
return;
}
if (IsListening)
return;
Server = new TCPServer(Port, MaxClients);
Server.SocketStatusChange += new TCPServerSocketStatusChangeEventHandler(SocketStatusChange);
ServerStopped = false;
Server.WaitForConnectionAsync(IPAddress.Any, ConnectCallback);
onServerStateChange();
Debug.Console(2, "Server Status: {0}, Socket Status: {1}\r\n", Server.State.ToString(), Server.ServerSocketStatus);
}
catch (Exception ex)
{
ErrorLog.Error("Error with Dynamic Server: {0}", ex.ToString());
}
}
/// <summary>
/// Stop Listeneing
/// </summary>
public void StopListening()
{
Debug.Console(2, "Stopping Listener");
if (Server != null)
Server.Stop();
ServerStopped = true;
onServerStateChange();
}
/// <summary>
/// Disconnect All Clients
/// </summary>
public void DisconnectAllClients()
{
Debug.Console(2, "Disconnecting All Clients");
if (Server != null)
Server.DisconnectAll();
onConnectionChange();
onServerStateChange(); //State shows both listening and connected
}
/// <summary>
/// Broadcast text from server to all connected clients
/// </summary>
/// <param name="text"></param>
public void BroadcastText(string text)
{
if (ConnectedClientsIndexes.Count > 0)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(text);
foreach (uint i in ConnectedClientsIndexes)
Server.SendDataAsync(i, b, b.Length, SendDataAsyncCallback);
}
}
/// <summary>
/// Not sure this is useful in library, maybe Pro??
/// </summary>
/// <param name="text"></param>
/// <param name="clientIndex"></param>
public void SendTextToClient(string text, uint clientIndex)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(text);
Server.SendDataAsync(clientIndex, b, b.Length, SendDataAsyncCallback);
}
//private method to check heartbeat requirements and start or reset timer
void checkHeartbeat(uint clientIndex, string received)
{
if (HeartbeatRequired)
{
if (!string.IsNullOrEmpty(HeartbeatStringToMatch))
{
if (received == HeartbeatStringToMatch)
{
if (HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary[clientIndex].Reset(HeartbeatRequiredIntervalMs);
else
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
}
}
else
{
if (HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary[clientIndex].Reset(HeartbeatRequiredIntervalMs);
else
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
}
}
}
#endregion
#region Methods - Callbacks
/// <summary>
/// Callback to disconnect if heartbeat timer finishes without being reset
/// </summary>
/// <param name="o"></param>
void HeartbeatTimer_CallbackFunction(object o)
{
uint clientIndex = (uint)o;
string address = Server.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex);
ErrorLog.Error("Heartbeat not received for Client at IP: {0}, DISCONNECTING BECAUSE HEARTBEAT REQUIRED IS TRUE", address);
Debug.Console(2, "Heartbeat not received for Client at IP: {0}, DISCONNECTING BECAUSE HEARTBEAT REQUIRED IS TRUE", address);
SendTextToClient("Heartbeat not received by server, closing connection", clientIndex);
Server.Disconnect(clientIndex);
HeartbeatTimerDictionary.Remove(clientIndex);
}
/// <summary>
/// TCP Server Socket Status Change Callback
/// </summary>
/// <param name="server"></param>
/// <param name="clientIndex"></param>
/// <param name="serverSocketStatus"></param>
void SocketStatusChange(TCPServer server, uint clientIndex, SocketStatus serverSocketStatus)
{
Debug.Console(2, "Client at {0} ServerSocketStatus {1}",
server.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex), serverSocketStatus.ToString());
if (server.GetServerSocketStatusForSpecificClient(clientIndex) == SocketStatus.SOCKET_STATUS_CONNECTED)
{
if (SharedKeyRequired && !WaitingForSharedKey.Contains(clientIndex))
WaitingForSharedKey.Add(clientIndex);
if (!ConnectedClientsIndexes.Contains(clientIndex))
ConnectedClientsIndexes.Add(clientIndex);
}
else
{
if (ConnectedClientsIndexes.Contains(clientIndex))
ConnectedClientsIndexes.Remove(clientIndex);
if (HeartbeatRequired && HeartbeatTimerDictionary.ContainsKey(clientIndex))
HeartbeatTimerDictionary.Remove(clientIndex);
}
if (Server.ServerSocketStatus.ToString() != Status)
onConnectionChange();
}
/// <summary>
/// TCP Client Connected to Server Callback
/// </summary>
/// <param name="myTCPServer"></param>
/// <param name="clientIndex"></param>
void ConnectCallback(TCPServer myTCPServer, uint clientIndex)
{
if (myTCPServer.ClientConnected(clientIndex))
{
if (SharedKeyRequired)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes(SharedKey + "\n");
myTCPServer.SendDataAsync(clientIndex, b, b.Length, SendDataAsyncCallback);
Debug.Console(2, "Sent Shared Key to client at {0}", myTCPServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex));
}
if (HeartbeatRequired)
{
CTimer HeartbeatTimer = new CTimer(HeartbeatTimer_CallbackFunction, clientIndex, HeartbeatRequiredIntervalMs);
HeartbeatTimerDictionary.Add(clientIndex, HeartbeatTimer);
}
myTCPServer.ReceiveDataAsync(clientIndex, ReceivedDataAsyncCallback);
if (myTCPServer.State != ServerState.SERVER_LISTENING && MaxClients > 1 && !ServerStopped)
myTCPServer.WaitForConnectionAsync(IPAddress.Any, ConnectCallback);
}
if (myTCPServer.State != ServerState.SERVER_LISTENING && MaxClients > 1 && !ServerStopped)
myTCPServer.WaitForConnectionAsync(IPAddress.Any, ConnectCallback);
}
/// <summary>
/// Send Data Asyc Callback
/// </summary>
/// <param name="myTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="numberOfBytesSent"></param>
void SendDataAsyncCallback(TCPServer myTCPServer, uint clientIndex, int numberOfBytesSent)
{
//Seems there is nothing to do here
}
/// <summary>
/// Received Data Async Callback
/// </summary>
/// <param name="myTCPServer"></param>
/// <param name="clientIndex"></param>
/// <param name="numberOfBytesReceived"></param>
void ReceivedDataAsyncCallback(TCPServer myTCPServer, uint clientIndex, int numberOfBytesReceived)
{
if (numberOfBytesReceived > 0)
{
string received = "Nothing";
byte[] bytes = myTCPServer.GetIncomingDataBufferForSpecificClient(clientIndex);
received = System.Text.Encoding.GetEncoding(28591).GetString(bytes, 0, numberOfBytesReceived);
if (WaitingForSharedKey.Contains(clientIndex))
{
received = received.Replace("\r", "");
received = received.Replace("\n", "");
if (received != SharedKey)
{
byte[] b = Encoding.GetEncoding(28591).GetBytes("Shared key did not match server. Disconnecting");
Debug.Console(2, "Client at index {0} Shared key did not match the server, disconnecting client", clientIndex);
ErrorLog.Error("Client at index {0} Shared key did not match the server, disconnecting client", clientIndex);
myTCPServer.SendDataAsync(clientIndex, b, b.Length, null);
myTCPServer.Disconnect(clientIndex);
}
if (myTCPServer.NumberOfClientsConnected > 0)
myTCPServer.ReceiveDataAsync(ReceivedDataAsyncCallback);
WaitingForSharedKey.Remove(clientIndex);
byte[] skResponse = Encoding.GetEncoding(28591).GetBytes("Shared Key Match, Connected and ready for communication");
myTCPServer.SendDataAsync(clientIndex, skResponse, skResponse.Length, null);
myTCPServer.ReceiveDataAsync(ReceivedDataAsyncCallback);
}
else
{
myTCPServer.ReceiveDataAsync(ReceivedDataAsyncCallback);
Debug.Console(2, "Server Listening on Port: {0}, client IP: {1}, NumberOfBytesReceived: {2}, Received: {3}\r\n",
myTCPServer.PortNumber, myTCPServer.GetAddressServerAcceptedConnectionFromForSpecificClient(clientIndex), numberOfBytesReceived, received);
onTextReceived(received);
}
checkHeartbeat(clientIndex, received);
}
if (myTCPServer.GetServerSocketStatusForSpecificClient(clientIndex) == SocketStatus.SOCKET_STATUS_CONNECTED)
myTCPServer.ReceiveDataAsync(clientIndex, ReceivedDataAsyncCallback);
}
#endregion
#region Methods - EventHelpers/Callbacks
//Private Helper method to call the Connection Change Event
void onConnectionChange()
{
var handler = ClientConnectionChange;
if (handler != null)
handler(this, new DynamicTCPSocketStatusChangeEventArgs(Server, false));
}
//Private Helper Method to call the Text Received Event
void onTextReceived(string text)
{
var handler = TextReceived;
if (handler != null)
handler(this, new GenericCommMethodReceiveTextArgs(text));
}
//Private Helper Method to call the Server State Change Event
void onServerStateChange()
{
var handler = ServerStateChange;
if (handler != null)
handler(this, new DynamicTCPServerStateChangedEventArgs(Server, false));
}
//Private Event Handler method to handle the closing of connections when the program stops
void CrestronEnvironment_ProgramStatusEventHandler(eProgramStatusEventType programEventType)
{
if (programEventType == eProgramStatusEventType.Stopping)
{
Debug.Console(1, this, "Program stopping. Closing server");
DisconnectAllClients();
StopListening();
}
}
#endregion
}
}

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Pepperdash Core/Pepperdash Core/PepperDash_Core.csproj
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@@ -64,10 +64,13 @@
<ItemGroup>
<Compile Include="CommunicationExtras.cs" />
<Compile Include="Comm\ControlPropertiesConfig.cs" />
<Compile Include="Comm\GenericSecureTcpIpServer.cs" />
<Compile Include="Comm\GenericSecureTcpIpClient.cs">
<SubType>Code</SubType>
</Compile>
<Compile Include="Comm\eControlMethods.cs" />
<Compile Include="Comm\FINISH CommStatic.cs" />
<Compile Include="Comm\CommunicationGather.cs" />
<Compile Include="Comm\GenericSecureTcpClient.cs" />
<Compile Include="Comm\EventArgs.cs" />
<Compile Include="Comm\GenericSshClient.cs" />
<Compile Include="CoreInterfaces.cs" />
@@ -76,6 +79,7 @@
<Compile Include="Debug\DebugMemory.cs" />
<Compile Include="Device.cs" />
<Compile Include="DeviceConfig.cs" />
<Compile Include="Comm\GenericTcpIpServer.cs" />
<Compile Include="EthernetHelper.cs" />
<Compile Include="Comm\GenericTcpIpClient.cs" />
<Compile Include="JsonToSimpl\EventArgs and Constants.cs" />

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@@ -10,8 +10,8 @@
<ArchiveName />
</RequiredInfo>
<OptionalInfo>
<CompiledOn>3/17/2017 10:28:42 AM</CompiledOn>
<CompilerRev>1.0.6285.17060</CompilerRev>
<CompiledOn>3/18/2017 5:00:59 PM</CompiledOn>
<CompilerRev>1.0.6286.28828</CompilerRev>
</OptionalInfo>
<Plugin>
<Version>Crestron.SIMPLSharp, Version=2.0.52.0, Culture=neutral, PublicKeyToken=812d080f93e2de10</Version>

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@@ -1,4 +1,4 @@
MainAssembly=PepperDash_Core.dll:1cb57e7d4dc5c0e9b66ba4c496fb831f
MainAssembly=PepperDash_Core.dll:9f208dcbcc49e496f38e91289aee13c4
MainAssemblyMinFirmwareVersion=1.007.0017
MainAssemblyResource=SimplSharpData.dat:315526abf906cded47fb0c7510266a7e
ü

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