void Connect()
{
//Make a new client object if needed
if (client == null)
{
client = new NetClient("127.0.0.1", 15900);
client.ReceiveEvent += DoReceive;
client.LogEvent += Log;
client.DisconnectEvent = OnDisconnect;
client.ConnectEvent = OnConnect;
}
//check if connected already
if (!client.IsConnected)
{
client.Connect();
}
else
{
MessageBox.Show("Already connected to server.");
}
}
static void Main(string[] args)
{
NetPeerConfiguration config = new NetPeerConfiguration("garbagethrower");
var client = new NetClient(config);
client.Start();
var target = new IPEndPoint(NetUtility.Resolve("localhost"), 14242);
var buffer = new byte[1024];
var rnd = new Random();
// use RawSend to throw poop at server
while (true)
{
rnd.NextBytes(buffer);
int length = rnd.Next(1, 1023);
switch (rnd.Next(2))
{
case 0:
// complete randomness
break;
case 1:
// semi-sensical
buffer[1] = 0; // not a fragment, sequence number 0
buffer[2] = 0; // not a fragment, sequence number 0
buffer[3] = (byte)length; // correct payload length
buffer[4] = (byte)(length >> 8); // correct payload length
break;
}
// fling teh poop
client.RawSend(buffer, 0, length, target);
Thread.Sleep(1);
}
}
static void Main(string[] args)
{
Config(myCPCC, args[0]);
Disp.ViewOnScreen($"*** CLI {name} ***");
Disp.ViewOnScreen($"Commands: callrequest DST CAP, teardownrequest DST CAP");
NetClient nc = new NetClient(HandleMessage, name);
Client.nc = nc;
Task.Run(() => nc.ListenForMessages());
while (true)
{
string[] str = Console.ReadLine().Split();
switch (str[0])
{
case "interrupt":
break;
case "callrequest": //callrequest DST CAP
myCPCC.CallRequest_req(name, str[1], int.Parse(str[2]), nc);
break;
case "teardownrequest": //teardownrequest DST CAP
myCPCC.CallTeardown_req(str[1], int.Parse(str[2]), nc);
break;
case "true":
Console.WriteLine("Confirm:");
break;
default:
Console.WriteLine("Incorrect command");
break;
}
}
}
public ViewModel()
{
network = new NetClient();
StringsUsers = network.Data;
}
/// <summary>
/// Stops NetworkClient if it working, and creates another one with new host
/// </summary>
/// <param name="host"></param>
public void ResetHost(string host)
{
if(Client.Status == NetClientStatus.Working)
Client.Stop();
Client = new NetClient(host, Client.Port, new GameProtocol(), Encoding.ASCII, Client.SleepTimeout);
}
public GameClient(string host)
{
Client = new NetClient(host, protocol: new GameProtocol(), defaultEncoding: Encoding.ASCII, fireResponseEventAsync: false);
Client.ResponseEvent += OnResponse;
eventSyncDelegate = EventSyncDelegate;
}
static void Main(string[] args)
{
Console.Write("Enter your personal password: "******"Generating authentication code...");
// Generate a password-based Message Authentication Code (with salt to prevent rainbowtables) to verify the user identity against the server
// This string will be used as our database key: a (pseudo-)unique identifier which, for all intents and purposes, can be as public as we like since it doesn't do an attacker any good to know it
string auth = Support.ToHexString(KDF.PBKDF2(KDF.HMAC_SHA1, key.ToUTF8Bytes(), "NoRainbow".ToUTF8Bytes(), 8192, 128));
// Create private encryption/decryption algorithm for processing private (encrypted) data stored on server
Rijndael128 privCrypt = new Rijndael128(key);
RandomProvider provider = new CryptoRandomProvider();
bool connected = false;
bool load = false;
// AES key used for communication is randomly chosen by generating anywhere between 1 and 511 random bytes as the password for PBKDF2-HMAC-SHA1
NetClient client = new NetClient(new Rijndael128(provider.GetBytes(provider.NextInt(511) + 1).ToUTF8String()), ParseIP(), ParsePort(), (string message, out bool keepAlive) =>
{
if (message.StartsWith("M-"))
{
// Handle a blank response
if (message.Length == 2)
{
Console.WriteLine("No messages exist with your password");
}
else
{
string[] msgs = null;
try
{
msgs = Support.DeserializeString(message.Substring(2));
}
catch (Exception) { Console.WriteLine("The server seems to have sent an incorrect message. The stored messages could not be read!"); }
foreach (var cmsg in msgs)
{
try
{
// Decrypt each message with the supplied decryptor
byte[] messages_pad = privCrypt.Decrypt(Convert.FromBase64String(cmsg));
int len = Support.ReadInt(messages_pad, 0);
string messages = messages_pad.SubArray(4, len + 4).ToUTF8String();
Console.WriteLine(messages);
}
catch (Exception) { /* Ignore corrupt message (maybe do something else here?) */ }
}
Console.WriteLine("\nPress any key to continue...");
Console.ReadKey();
Console.Clear();
}
load = false;
}
// Tell the client object to keep the connection alive
keepAlive = true;
// Don't respond
return(null);
}, cli =>
{
Console.WriteLine("Connected to server!");
connected = true;
});
// Server-connection-attempt loop (mostly just UI/UX stuff)
do
{
try
{
Console.WriteLine("Connecting to server...");
client.Connect(); // <----- Only important line in this entire loop
break;
}
catch (Exception)
{
Console.Write("The server rejected the connection (probably because the server isn't running). Try again? (Y/n): ");
if (Console.In.ReadYNBool("n"))
{
Console.WriteLine("OK. Exiting...");
Thread.Sleep(2500);
Environment.Exit(0);
}
Console.Clear();
}
} while (true);
while (!connected)
{
Thread.Sleep(125);
}
Console.WriteLine();
bool alive = true;
while (alive)
{
// Show selection menu
switch (DoSelect())
{
case 1:
{
// Get and send a message to the server
Console.Clear();
Console.Write("Message to send to server: ");
string message = Console.ReadLine();
if (message.Length == 0)
{
message = "\0"; // Blank messages are parsed as a null byte
}
// Encrypt the message with our personal AES object (which hopefully only we know)
byte[] toSend = privCrypt.Encrypt(NetSupport.WithHeader(message.ToUTF8Bytes()));
// Send to the server
if (!client.TrySend("S-" + auth + "-" + Convert.ToBase64String(toSend)))
{
Console.WriteLine("Unfortunately, an error ocurred when attempting to send your message to the server :(");
}
break;
}
case 2:
{
// Send a request to the server for a list of all messages associated with the hex key we generated in the beginning
Console.Clear();
Console.WriteLine("Loading messages...");
// Send the "Load" command along with our db key
if (!client.TrySend("L-" + auth))
{
Console.WriteLine("Unfortunately, an error ocurred when attempting to send your message to the server :(");
}
load = true;
while (load)
{
Thread.Sleep(125);
}
break;
}
case 3:
Console.WriteLine("Exiting...");
// Await client disconnection
try { client.Disconnect(); }
catch (Exception) { }
// Stop program
Environment.Exit(0);
break;
}
}
while (client.IsAlive)
{
Thread.Sleep(250);
}
}
