// <summary>
// The following commands are internally used in the server
// </summary>
public dynamic debug(int commandID, int myserverID, int senderID, int receiverID, ComData comdata, DeviceRouting devices)
{
string CurrentTime = DateTime.Now.ToString("HH:mm:ss");
DeviceRegistry sender = devices.FindByID(receiverID);
if (sender != null)
{//has sender that is acknowledged by the server
{
string message1 = "";
comdata.Get(3, ref message1);
string message2 = "";
comdata.Get(4, ref message2);
Console.WriteLine("'" + sender.Name + "' at " + CurrentTime + ": " + message1 + '\n' + message2);
}
}
else
{
Console.WriteLine("Incoming command doesn't have proper sender at " + CurrentTime);
}
return(null);
}
public bool Remove(DeviceRegistry device)
{
if (device == null)
{
return(false);
}
else
{
return(Remove(FindIDByDevice(device)));
}
}
public int FindIDByDevice(DeviceRegistry device)
{
if (device != null)
{
return(devices.IndexOf(device));
}
else
{
return(-1);
}
}
/// <summary>
/// Allow a PC connection to unregister itself
/// </summary>
/// <param name="deviceID"></param>
public void Exit(int deviceID)
{
if (deviceID > -1)
{
DeviceRegistry device = devices.FindByID(deviceID);
if (device != null)
{
Console.WriteLine(DateTime.Now + " - " + device.Name + ": unregistered from ID '" + deviceID + "'");
devices.Remove(deviceID);
}
}
}
CTrafficMessage()
{
MessagesList = new List <ComData>();
data = new DataInterpretor();
devices = new DeviceRouting();
Commandslist = new Commands();
DeviceRegistry Server = new DeviceRegistry("FTG-SERVER", "server");
devices.Add(Server);
myserverID = devices.FindIDByDevice(Server);
}
public bool Add(DeviceRegistry device)
{
if (FindByName(device.Name) != null)
{
return(false);
}
else
{
devices.Add(device);
livetimes.Add(-1);
routes.Add(-1);
return(true);
}
}
/// <summary>
/// Sends a message to a client
/// </summary>
/// <param name="deviceID"></param>
/// <returns></returns>
public string RetrieveMessage(int deviceID)
{
ComData data;
string message = ",";
DeviceRegistry device = devices.FindByID(deviceID);
if (MessagesList.Count == 0 || device == null)
{
return("{}");
}
else
{
devices.UpdateLiveTime(deviceID);
data = MessagesList[0];
MessagesList.RemoveAt(0);
int i = 0;
while (data.GetType(i) > 0)
{
string messagepiece = "";
data.Get(i, ref messagepiece);
message += messagepiece + ",";
i++;
}
message = message.Substring(0, message.Length - 1);
if (message.Length > 0)
{
message = "{" + message + "}";
}
return(message);
}
}
/// <summary>
/// Perform all handshaking to give and validate ID's as well as device names
/// </summary>
/// <param name="step">the step it is following</param>
/// <param name="givenvalue">any value that is supposed to be supplied per step</param>
/// <returns></returns>
public string Handshake(int step, string givenvalue)
{
if (step > 0)
{
switch (step)
{
//step 1: supplied unique devicename and type in list, requests deviceID from server
case 1:
{
string [] parameters = givenvalue.Split(",".ToArray(), 3);
if (parameters != null)
{
string devicename = parameters[0];
string devicetype = parameters[1];
if (devicename.Length > 0 && devicetype.Length > 0)
{
if (devices.FindByName(devicename) == null)
{
DeviceRegistry device = new DeviceRegistry(devicename, devicetype);
devices.Add(device);
string deviceID = devices.FindIDByDevice(device).ToString();
Console.WriteLine(device.Name + ": registered to ID '" + deviceID + "'");
Console.WriteLine(DateTime.Now + " - Handshake step 1 - Device: " + devicename + " (" + deviceID + ")");
return(deviceID);
}
else
{
Console.WriteLine(DateTime.Now + " - Handshake step failed - Already registered Device: " + devicename);
}
}
}
break;
}
//Step 2: supplied deviceID, requests server name
case 2:
{
int deviceID;
if (Int32.TryParse(givenvalue.ToString(), out deviceID))
{
//validate the existence of the device by id
if (devices.FindByID(deviceID) != null)
{
Console.WriteLine(DateTime.Now + " - Handshake step 2 - DeviceID: " + deviceID);
return(devices.FindByID(myserverID).Name);
}
else
{
Console.WriteLine(DateTime.Now + " - Handshake step failed - tried handshaking with unknown device on id '" + deviceID + "'");
}
}
else
{
}
break;
}
//supplied deviceID, requests serverID
case 3:
{
int deviceID;
if (Int32.TryParse(givenvalue.ToString(), out deviceID))
{
//validate the existence of the device by id
if (devices.FindByID(deviceID) != null)
{
Console.WriteLine(DateTime.Now + " - Handshake step complete - Device: " + devices.FindByID(deviceID).Name + " (" + deviceID + ")");
return(myserverID.ToString());
}
else
{
Console.WriteLine(DateTime.Now + " - Handshake step failed - tried handshaking with unknown device on id '" + deviceID + "'");
}
}
break;
}
}
}
return("");
}
/// <summary>
/// Incoming messages from clientss are processed here.
/// </summary>
/// <param name="message">Stringified version of ComData</param>
public void SendMessage(string message)
{
//Process Stringified ComData
data.addString(message);
//Is it really usable (as ComData)
if (data.usableInput)
{
//Get the comdata
ComData comdata = data.getComData();
int senderID = 0;
int receiverID = 0;
int commandID = 0;
string CurrentTime = DateTime.Now.ToString("HH:mm:ss");
comdata.Get(0, ref senderID);
comdata.Get(1, ref receiverID);
comdata.Get(2, ref commandID);
//Is the command valid?
if (commandID < 1)
{
MessagesList.Add(Commandslist.GenerateErrorMessage(senderID, 1, "Invalid command"));
return;
}
//A message has been received by something, find device
DeviceRegistry receiver = devices.FindByID(receiverID);
//The receiver has not been registered in this system
if (receiver == null)
{
//And the receiver is not supposed to be 'everyone'
if (receiverID != -1)
{
//then stop the code..
//Add the message to return error to sender
MessagesList.Add(Commandslist.GenerateErrorMessage(senderID, 1, "Invalid receiver"));
return;
}
}
//If this message is meant for this server
if (receiverID == myserverID || receiverID == -1)
{
//Does not require a valid senderID
//Switch base handshake commands
dynamic result = Commandslist.ExecuteCommand(commandID, myserverID, senderID, receiverID, comdata, devices);
//if result is a command
if (result is ComData)
{
int param1 = 0;
result.Get(0, ref param1);
Console.WriteLine(param1);
Console.WriteLine(message);
MessagesList.Add(result);
}
}
else//wasn't meant for this server
{
//TODO make code to transmit command to target
}
}
else
{
string CurrentTime = DateTime.Now.ToString("HH:mm:ss");
Console.WriteLine("corrupted message received at " + CurrentTime);
}
}