How can I send message to a specificate client?

[philwu]

Let's see, I already had a running websocket server. How can I take the initiative to send a message to one of them?

Currently, I can only:

Wait a message from a client and make response, or
Make a broadcast so every client can receive the message.
But what I want is sending to a client its own message by some logic.

Anyone help, please.

[GholibjonMadiyarov]

`server = new WebSocketServer(IPAddress.Any, 8000, true);
server.SslConfiguration.ServerCertificate = new X509Certificate2("file", "password");
server.SslConfiguration.EnabledSslProtocols = System.Security.Authentication.SslProtocols.Default | System.Security.Authentication.SslProtocols.Tls11 | System.Security.Authentication.SslProtocols.Tls12;

server.AddWebSocketService("/Web");
server.AddWebSocketService("/Desktop");
server.AddWebSocketService("/Mobile");

server.Log.File = AppDomain.CurrentDomain.BaseDirectory + "/ServerLog.txt";
server.KeepClean = false;

server.Start();

//Client id from db or file
string clientId = "9b0d327304bc433cb2c1968720cd2792";

//Message data
string message = "Hi!";

if (server.WebSocketServices["/Desktop"].Sessions.TryGetSession(clientId, out IWebSocketSession session))
{
//Client is open
if (session.State == WebSocketSharp.WebSocketState.Open)
{
server.WebSocketServices["/Desktop"].Sessions.SendTo(message, clientId);
//session.Context.WebSocket.Send(message);
}
}`