static void Main(string[] args)
{
TcpListener ServerSocket = new TcpListener(IPAddress.Parse("127.0.0.1"), 1000);
TcpClient ClientSocket = default(TcpClient);
ServerSocket.Start();
Console.WriteLine("Server Started ...");
while (true)
{
try
{
ClientSocket = ServerSocket.AcceptTcpClient();
byte[] BytesFrom = new byte[10025];
string DataFromClient = null;
NetworkStream NetworkStream = ClientSocket.GetStream();
NetworkStream.Read(BytesFrom, 0, 2000);
DataFromClient = System.Text.Encoding.ASCII.GetString(BytesFrom);
DataFromClient = DataFromClient.Substring(0, DataFromClient.IndexOf("$"));
ClientsList.Add(DataFromClient, ClientSocket);
Guid GuidName = Guid.Parse(DataFromClient);
Console.WriteLine(GuidName + " has just joined application ");
HandleClient Client = new HandleClient();
Client.StartClient(ClientSocket, DataFromClient, ClientsList);
}
catch
{
ClientSocket.Close();
ServerSocket.Stop();
Console.WriteLine("exit");
Console.ReadLine();
}
}
}
static void Main(string[] args)
{
int activeClientCount;
TcpListener serverSocket = null;
TcpClient clientSocket = null;
IPAddress serverIP = null;
Int32 serverPort = 0;
bool customIP = false;
bool customPort = false;
if (args.Length >= 1)
{
for (int i = 0; i < args.Length; i++)
{
string arg = args[i];
switch (arg)
{
case "-a":
try
{
i++;
serverIP = IPAddress.Parse(args[i]);
customIP = true;
}
catch (Exception)
{
Console.WriteLine("server: >> Wrong IP syntax");
Console.ReadLine();
return;
}
break;
case "-p":
try
{
i++;
serverPort = Convert.ToInt32(args[i]);
if (serverPort < 1 || serverPort > 65535)
{
throw new FormatException();
}
customPort = true;
}
catch (Exception)
{
Console.WriteLine("server: >> Wrong port syntax");
Console.ReadLine();
return;
}
break;
case "--local":
try
{
serverIP = IPAddress.Parse(LOCALHOST_SERVER_IP);
customIP = true;
}
catch (Exception)
{
Console.WriteLine("server: >> Wrong localhost IP syntax");
Console.ReadLine();
return;
}
break;
case "-h":
PrintHelp();
return;
case "--help":
PrintHelp();
return;
}
}
}
if (customIP == false)
{
try
{
serverIP = IPAddress.Parse(GetLocalIPAddress());
}
catch (Exception)
{
Console.WriteLine("server: >> Wrong IP syntax");
Console.ReadLine();
return;
}
}
if (customPort == false)
{
serverPort = DEFAULT_SERVER_PORT;
}
try
{
try
{
// STEP 1: database initilization
PrintVerboseMessage("server: >> Server started");
if (File.Exists(DATABASE_NAME) == false)
{
SQLiteConnection.CreateFile(DATABASE_NAME);
PrintVerboseMessage("server: >> Database created");
}
DirectoryInfo serverDir = new DirectoryInfo(serverDirPath);
if (serverDir.Exists == false)
{
serverDir.Create();
}
PrintVerboseMessage("server: >> Server directory path: " + serverDirPath);
DirectoryInfo snapshotDir = new DirectoryInfo(snapshotDirPath);
if (snapshotDir.Exists == false)
{
snapshotDir.Create();
}
PrintVerboseMessage("server: >> Server snapshot path: " + snapshotDirPath);
DirectoryInfo tmpDir = new DirectoryInfo(tmpDirPath);
if (tmpDir.Exists == false)
{
tmpDir.Create();
}
PrintVerboseMessage("server: >> Server tmp path: " + tmpDirPath);
PrintVerboseMessage("server: >> Connection with database opening...");
using (SQLiteConnection dbConnection = new SQLiteConnection("Data Source=cloudServerDB.sqlite;Version=3;"))
{
dbConnection.Open();
DBmanager dbManager = new DBmanager(dbConnection);
if (dbManager.dbTableExists("users") == false)
{
string query = "CREATE TABLE users (username VARCHAR(255) PRIMARY KEY NOT NULL, hash_pwd TEXT NOT NULL, salt TEXT NOT NULL, active INTEGER NOT NULL, backup_path VARCHAR(255) NOT NULL, file_table_name VARCHAR(255) NOT NULL, snapshot_table_name VARCHAR(255) NOT NULL, last_login DATETIME, creation_time DATETIME, last_modification DATETIME);";
int modifNumber = dbManager.dbExecuteWriteQuery(query);
if (modifNumber == -1)
{
throw new Exception("DB table creation error");
}
PrintVerboseMessage("server: >> Database 'users' table created");
}
PrintVerboseMessage("server: >> Database ready");
}
PrintVerboseMessage("server: >> Connection with database closed");
// STEP 2: sockets initialization
serverSocket = new TcpListener(serverIP, serverPort);
PrintVerboseMessage("server: >> Server IP address: " + serverIP);
PrintVerboseMessage("server: >> Server port: " + serverPort);
activeClientCount = 0;
clientSocket = default(TcpClient); // inizializzazione neutrale
serverSocket.Start();
PrintVerboseMessage("server: >> Main listener socket started");
PrintVerboseMessage("server: >> Ready to accept TCP connections from client");
while (true)
{
try
{
// STEP 3: connection with a client
PrintVerboseMessage("server: >> Waiting for a new client...");
clientSocket = serverSocket.AcceptTcpClient();
PrintVerboseMessage("server: >> Accepted connections from a client");
activeClientCount++;
PrintVerboseMessage("server: >> Client number " + activeClientCount + " is connected");
// STEP 4: new client in a new thread
HandleClient client = new HandleClient();
client.startClient(clientSocket);
}
catch (Exception)
{
if (clientSocket.Connected)
{
clientSocket.Close();
Console.WriteLine("server: >> Connection with client closed");
}
throw;
}
}
}
catch (IOException e)
{
Console.WriteLine("server:Exception >> IOException: " + e.Message);
throw;
}
catch (ArgumentOutOfRangeException e)
{
Console.WriteLine("server:Exception >> ArgumentOutOfRangeException: " + e.Message);
throw;
}
catch (ArgumentNullException e)
{
Console.WriteLine("server:Exception >> ArgumentNullException: " + e.Message);
throw;
}
catch (FormatException e)
{
Console.WriteLine("server:Exception >> FormatException: " + e.Message);
throw;
}
catch (InvalidOperationException e)
{
Console.WriteLine("server:Exception >> InvalidOperationException: " + e.Message);
throw;
}
catch (SocketException e)
{
Console.WriteLine("server:Exception >> SocketException: " + e.Message);
throw;
}
catch (Exception e)
{
Console.WriteLine("server:Exception >> Execution terminated because of exception: " + e.Message);
throw;
}
}
catch (Exception)
{
if (clientSocket.Connected)
{
clientSocket.Close();
Console.WriteLine("server: >> Connection with client closed");
}
}
finally
{
if (clientSocket.Connected)
{
clientSocket.Close();
PrintVerboseMessage("server: >> Connection with client closed");
}
serverSocket.Stop();
PrintVerboseMessage("server: >> Main server socket closed");
PrintVerboseMessage("server: >> Exiting...");
Console.ReadLine();
}
}
public void ListenForClients()
{
TcpListener newServerSocket = new TcpListener(1337);
newServerSocket.Start();
Console.WriteLine("Server Started You Can Chat :)");
while (true)
{
byte[] bytesFrom = new byte[65536];
string dataFromClient = null;
int flag = 0;
newClientSocket = default(TcpClient);
newClientSocket = newServerSocket.AcceptTcpClient();
NetworkStream networkStream = newClientSocket.GetStream();
networkStream.Read(bytesFrom, 0, (int)newClientSocket.ReceiveBufferSize);
dataFromClient = System.Text.Encoding.ASCII.GetString(bytesFrom);
dataFromClient = dataFromClient.Substring(0, dataFromClient.IndexOf("Cool"));
if (clientsList.Count == 0)
{
clientsList.Add(dataFromClient, newClientSocket);
broadcast(dataFromClient + " Joined ", dataFromClient, false);
Console.WriteLine(dataFromClient + " Joined chat room ");
HandleClient client = new HandleClient();
client.startClient(newClientSocket, dataFromClient);
}
else
{
foreach (KeyValuePair<object, object> Item in clientsList)
{
if ((String)Item.Key == dataFromClient)
{
Byte[] lastMessage = null;
lastMessage = Encoding.ASCII.GetBytes("ChangeName" + "Cool");
networkStream.Write(lastMessage, 0, lastMessage.Length);
networkStream.Flush();
newClientSocket.Close();
flag = 1;
break;
}
else
{
flag = 0;
}
}
if(flag == 0)
{
clientsList.Add(dataFromClient, newClientSocket);
broadcast(dataFromClient + " Joined ", dataFromClient, false);
Console.WriteLine(dataFromClient + " Joined chat room ");
HandleClient client = new HandleClient();
client.startClient(newClientSocket, dataFromClient);
}
}
}
newClientSocket.Close();
newServerSocket.Stop();
Console.WriteLine("exit");
Console.ReadLine();
}
