private string ReadPublicKey(TcpClient tcpClient)
{
Message msgKey = new Message();
msgKey.ReadFrom(tcpClient.GetStream());
return(msgKey.Body);
}
private string ReadPublicKey(TcpClient tcpClient)
{
Message msgKey = new Message();
msgKey.ReadFrom(tcpClient.GetStream());
Console.WriteLine("Server receive from client Public key " + msgKey.Body);
return(msgKey.Body);
}
public void Start()
{
//start the server
IPAddress iPAddress = Dns.GetHostEntry(hOST).AddressList[0];
TcpListener = new TcpListener(iPAddress, pORT);
try
{
TcpListener.Start();
Console.WriteLine("Server started...");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
while (true)
{
TcpClient tcpClient = TcpListener.AcceptTcpClient();
//hand shake
//Server send public key to client
SendPublicKey(tcpClient);
//Server read public key from client
string publicKeyFromClient = ReadPublicKey(tcpClient);
//handle login
//Read username and password from user
Message request = new Message();
var rsa = new EncryptionRSA();
rsa.SetPrivateKey(PrivateKey);
request.ReadFrom(tcpClient.GetStream(), rsa);
Message response = handlers[request.Header].Invoke(request);
if (response.Header.Equals("OK"))
{
Console.WriteLine("Client authenticated is connected...");
Console.WriteLine("server sends head: " + response.Header + " body " + response.Body);
var rsa2 = new EncryptionRSA();
rsa2.SetPublicKey(publicKeyFromClient);
response.WriteTo(tcpClient.GetStream(), rsa2);
RegisterClient(response.Body, publicKeyFromClient, tcpClient);
Thread thread = new Thread(() => HandleRequest(tcpClient));
thread.Start();
}
else
{
var rsa2 = new EncryptionRSA();
rsa2.SetPublicKey(publicKeyFromClient);
response.WriteTo(tcpClient.GetStream(), rsa2);
Console.WriteLine("Client failed to connect");
}
}
}
private void HandleRequest(TcpClient tcpClient)
{
while (true)
{
Thread.Sleep(10);
Message message = new Message();
message.ReadFrom(tcpClient.GetStream());
Console.WriteLine("Client send: body" + message.Body + "header" + message.Header);
Message response = handlers[message.Header].Invoke(message);
}
}
public void Start()
{
//start the server
IPAddress iPAddress = Dns.GetHostEntry(hOST).AddressList[0];
TcpListener = new TcpListener(iPAddress, pORT);
try
{
TcpListener.Start();
Console.WriteLine("Server started...");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
while (true)
{
TcpClient tcpClient = TcpListener.AcceptTcpClient();
//handle login
Message message = new Message();
message.ReadFrom(tcpClient.GetStream());
string username = message.Body.Split(';')[0];
Console.WriteLine("username : "******"password : "******"Client authenticated is connected...");
RegisterClient(username, tcpClient);
Message response = new Message();
response.Body = username;
handlers["IS_AUTHENTICATED"].Invoke(response);
Thread thread = new Thread(() => HandleRequest(tcpClient));
thread.Start();
}
else
{
Message response = new Message();
response.Header = "404";
response.Body = "Username of password is not valid";
handlers["AUTHENTICATION_FAILED"].Invoke(response);
}
}
}
private void HandleRequest(TcpClient tcpClient)
{
while (true)
{
Thread.Sleep(10);
Message message = new Message();
var rsa = new EncryptionRSA();
rsa.SetPrivateKey(PrivateKey);
try
{
message.ReadFrom(tcpClient.GetStream(), rsa);
Console.WriteLine("Client send: body" + message.Body + "header" + message.Header);
handlers[message.Header].Invoke(message);
broadcast(message);
}
catch (Exception e)
{
Console.WriteLine("Thread stop listening");
break;
}
}
}
