public void ReadFromFile()
{
if (File.Exists(currentFile))
{
clients.Clear();
string[] lines = File.ReadAllLines(currentFile);
foreach (var line in lines)
{
if (line.Length > 0)
{
List <string> clientElements = line.Split(",").ToList();
List <string> clientSubjects = clientElements[2].Split("@").ToList();
ClientElements client = new ClientElements(clientElements[0], clientElements[1], clientSubjects);
clients.Add(client);
Console.WriteLine("Added client: " + clientElements[0] + " " + clientElements[1] + " " + client.printSubjects());
}
}
}
}
public Response SwitchCase(string incomingInfo, Socket socket)
{
Response response = new Response();
string[] array = incomingInfo.Split(",");
string val = array[0];
string RQ = null;
string Name = null;
string ipAddress = null;
switch (val)
{
case "REGISTER":
RQ = array[1];
Name = array[2];
ipAddress = array[3];
var User1 = new ClientElements(Name, ipAddress);
response.clientValid = true;
if (clients.Any(i => i.clientName.Equals(Name)))
{
//Register-Denied
response.message = "REGISTER-DENIED,";
response.message += RQ + ",Name is already in use";
response.serverValid = false;
}
else
{
clients.Add(User1);
response.message = "REGISTERED,";
response.message += RQ + "," + Name + "," + ipAddress;
response.serverValid = true;
WriteToFile(clients);
}
return(response);
case "DE-REGISTER":
response.clientValid = true;
RQ = array[1];
Name = array[2];
if (clients.Any(i => i.clientName.Equals(Name)))
{
//de-register
clients.RemoveAll(n => n.clientName.Equals(Name));
response.message = "DE-REGISTERED,";
response.message += Name;
response.serverValid = true;
RemoveClientFromFile(array[2]);
}
else
{
response.serverValid = false;
response.message = "User not registered";
}
return(response);
case "UPDATE":
RQ = array[1];
Name = array[2];
ipAddress = array[3];
response.clientValid = true;
if (clients.Any(i => i.clientName.Equals(Name)))
{
var element = clients.Find(obj => obj.clientName.Equals(Name));
element.changeIP(ipAddress);
clients[clients.FindIndex(obj => obj.clientName.Equals(Name))] = element;
response.message = "UPDATE-CONFIRMED,";
response.message += RQ + "," + Name + "," + ipAddress;
UpdateIPInFile(element.clientName, array[3]);
response.serverValid = true;
}
else
{
response.message = "UPDATE-DENIED,";
response.message += RQ + "," + Name + " does not exist";
response.serverValid = false;
}
return(response);
case "PUBLISH":
RQ = array[1];
Name = array[2];
string subj = array[3];
string userMessage = array[4];
ipAddress = array[5];
bool subjectInterest = false;
response.clientValid = true;
response.message = String.Format("MESSAGE,{0},{1},{2}", Name, subj, userMessage);
foreach (ClientElements element in clients)
{
if (element.clientSubjects.Contains(subj))
{
List <string> ipandPort = element.ipAddress.Split(":").ToList();
IPEndPoint clientIP = new IPEndPoint(IPAddress.Parse(ipandPort[0]),
Int32.Parse(ipandPort[1]));
byte[] userFeed = Encoding.ASCII.GetBytes(response.message);
socket.SendTo(userFeed, 0, userFeed.Length, SocketFlags.None, clientIP);
subjectInterest = true;
}
}
if (!subjectInterest)
{
response.message = String.Format("PUBLISH-DENIED,{0},{1}, Error, no clients contain such a subject", Name, subj);
return(response);
}
response.message = "";
response.serverValid = false;
return(response);
case "SUBJECTS":
RQ = array[1];
Name = array[2];
response.clientValid = true;
List <string> newSubs = array[3].Split("@").ToList();
if (clients.Any(i => i.clientName.Equals(Name)))
{
var element = clients.Find(obj => obj.clientName.Equals(Name));
element.clientSubjects = new List <string>();
element.clientSubjects = newSubs;
response.message = String.Format("SUBJECTS-UPDATED,{0},{1},{2}", RQ, Name, array[3]);
UpdateSubjectsInFile(element.clientName, array[3]);
response.serverValid = true;
}
else
{
response.message = String.Format("SUBJECTS-REJECTED,{0},{1},{2}", RQ, Name, array[3]);
response.serverValid = false;
}
return(response);
case "WAKE-UP":
if (UdpServer.sleeping)
{
string thisServerIP = array[2];
UdpServer.sleeping = false;
foreach (ClientElements element in clients)
{
List <string> ipandPort = element.ipAddress.Split(":").ToList();
IPEndPoint clientIP = new IPEndPoint(IPAddress.Parse(ipandPort[0]),
Int32.Parse(ipandPort[1]));
byte[] userFeed = Encoding.ASCII.GetBytes("CHANGE-SERVER," + thisServerIP);
socket.SendTo(userFeed, 0, userFeed.Length, SocketFlags.None, clientIP);
}
Console.WriteLine("\nI'M AWAKE\nTelling other server to sleep.");
response.serverValid = true;
response.message = "GO-SLEEP";
}
return(response);
case "GO-SLEEP":
Console.WriteLine("\nI'M ASLEEP\nI was told to go sleep, And now I sleep...zzz");
UdpServer.sleeping = true;
response.serverValid = false;
return(response);
case "UPDATE-SERVER":
string otherServerIP = array[1];
foreach (ClientElements element in clients)
{
List <string> ipandPort = element.ipAddress.Split(":").ToList();
IPEndPoint clientIP = new IPEndPoint(IPAddress.Parse(ipandPort[0]),
Int32.Parse(ipandPort[1]));
byte[] userFeed = Encoding.ASCII.GetBytes("UPDATE-OTHER-SERVER," + otherServerIP);
socket.SendTo(userFeed, 0, userFeed.Length, SocketFlags.None, clientIP);
}
//response.serverValid = true;
//response.message = "SENT-FILE," + SendWholeFile();
return(response);
case "SENT-FILE":
var a = incomingInfo.Split(Environment.NewLine).ToArray();
List <string> fullFile = new List <string>();
Console.WriteLine("*INCOMING INFO**");
Console.WriteLine(incomingInfo);
List <string> newClientFile = incomingInfo.Split("\n").ToList();
newClientFile[0] = newClientFile[0].Replace("SENT-FILE,", "");
newClientFile.RemoveAt(newClientFile.Count - 1);
File.WriteAllLines(currentFile, newClientFile);
ReadFromFile();
return(response);
default:
return(response);
}
}