private void ChangeLightRequest(int clientIndex, string actionValue)
{
// Send the message to the client
MessageProtocol changeLightMessage = new MessageProtocol(connectedClients[clientIndex].GetID(), "ChangeLight", actionValue);
sendString(changeLightMessage.GetMessageToSend(), connectedClients[clientIndex].GetIPAddress());
// Update the state on TrafficLightClient object
if (actionValue.Equals("Red_On"))
{
connectedClients[clientIndex].SetIsRedOn(true);
}
if (actionValue.Equals("Amber_On"))
{
connectedClients[clientIndex].SetIsAmberOn(true);
}
if (actionValue.Equals("Green_On"))
{
connectedClients[clientIndex].SetIsGreenOn(true);
}
if (actionValue.Equals("Red_Off"))
{
connectedClients[clientIndex].SetIsRedOn(false);
}
if (actionValue.Equals("Amber_Off"))
{
connectedClients[clientIndex].SetIsAmberOn(false);
}
if (actionValue.Equals("Green_Off"))
{
connectedClients[clientIndex].SetIsGreenOn(false);
}
}
/// <summary>
/// Disconnects all of the clients connected to server
/// </summary>
private void DisconnectAllClients()
{
// Send disconnect message to every client
for (int i = (connectedClients.Count - 1); i >= 0; i--)
{
MessageProtocol changeLightMessage = new MessageProtocol(connectedClients[i].GetID(), "ClientDisconnect", "-");
sendString(changeLightMessage.GetMessageToSend(), connectedClients[i].GetIPAddress());
// Remove clients from the list
connectedClients.RemoveAt(i);
}
}
//*********************************************************************//
// Message was posted back to us. This is to get over the C# threading//
// rules whereby we can only touch the UI components from the thread //
// that created them, which is the form's main thread. //
//*********************************************************************//
public void MessageReceived(Object received)
{
String message = (String)received;
// Display the message with the timestamp
listBoxOutput.Items.Add(DateTime.Now.ToString("h:mm:ss tt") + " " + message);
// Convert the received message to message protocol object
MessageProtocol receivedMessage = new MessageProtocol(message);
// If server receives request for connection
if (receivedMessage.GetActionType().Equals("ConnectionRequest"))
{
// Create a new ID
newestConnectedID++;
string newID = (newestConnectedID).ToString();
// Get the IP address from the message that was sent
string newIPAddress = GetIPFromMessage(message);
// Create a traffic light object & add to the connected Clients list
int trafficLightIndex = connectedClients.Count;
TrafficLightClient newTrafficLight = new TrafficLightClient(newID, newIPAddress, trafficLightIndex, trafficLightsPanel.Width, trafficLightsPanel.Height);
connectedClients.Add(newTrafficLight);
// Assign the client a unique ID
MessageProtocol requestAccepted = new MessageProtocol("#", "ConnectionRequestAccepted", newID);
sendString(requestAccepted.GetMessageToSend(), newTrafficLight.GetIPAddress());
}
// If recieves request to disconnect
else if (receivedMessage.GetActionType().Equals("ClientDisconnecting"))
{
DisconnectAllClients();
}
// If receives a car from traffic light client
else if (receivedMessage.GetActionType().Equals("CarSent"))
{
string clientIDToUpdate = receivedMessage.GetID();
// Find the client id that the car was sent from
for (int i = 0; i < connectedClients.Count; i++)
{
if (connectedClients[i].GetID() == clientIDToUpdate)
{
// Add car to the client if found
connectedClients[i].AddCar();
break;
}
}
}
}
