C-Sharp-SslSockets (C# SslSockets)

A Client and Server Socket Library with SSL Encryption. Provides an easy and fast way of creating flexible Client and Server applications.

The library is contained within two files;

• Client.cs (SslSockets.SslClient)
• Server.cs (SslSockets.SslServer)

SslServer (Server.cs)

This is the object used to create a listen server application. This object is marked as abstract, so you will need to create a new child object and implement the abstract members.

This object is also generic, where the type must be of a SslServerClient. SslServerClients are objects used by the server, to store data for each client that is connected to the server.

SslServer Implementation Example

First, you will need to create a child object of SslServer.

// Custom server object using a custom server client
public class MySslSocketServer : SslServer<SslServerClient>
{
    public MySslSocketServer(X509Certificate2 certificate) : base(certificate)
    {
    }
    
    protected override SslServerClient CreateClient(TcpClient tcpClient, SslStream stream)
    {
        // Create my connected custom client data
        return new SslServerClient(stream, tcpClient);
    }
}

CreateClient(TcpClient, SslStream) is an abstract member from SslServer and has to be implemented. This should return a new instance of the generic type of the SslServer (TClient).

After you have created a new instance of your SslServer, you can run the server in your application.

using SslSockets;
static void Main(string[] args)
{
    MySslSocketServer server = new MySslSocketServer(GetCertificate("MyCertificateCN"));

    // Bind the events on the server objects
    server.ClientConnected += OnClientConnected;
    server.ClientDisconnected += OnClientDiconnected;
    server.MessageReceived += OnMessageReceived;

    // Listen on the given endpoint
    server.Listen(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 80));

    Console.WriteLine("Press any key to continue. . .");
    Console.ReadKey(true);
}

SslClient (Client.cs)

This is the object used for creating a client application. Unlike the SslServer this is not marked as abstract, so no child object needs to be created.

SslClient Implementation Example

No child object has to be created, so we can create a new instance in our application.

using SslSockets;

private static bool _bIsConnected = false; 
static void Main(string[] args)
{
    SslClient client = new SslClient();
    
    // Bind the client events
    client.Connected += OnConnected;
    client.Disconnected += OnDisconnected;
    client.MessageReceived += OnMessageReceived;

    // Connect to the endpoint and the matching server certificate subject name
    client.Connect(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 80), "MyServerCertificateCN");

    while(true)
    {
        if(_bIsConnected)
        {
            Console.Clear();
            Console.WriteLine("Enter a message to the server:");

            // Write a message to the server
            string input = Console.ReadLine();
            client.Write(input);
        }
        else
        {
            Console.Clear();
            Console.WriteLine("Connecting. . .");
        }
    }
}