如何将邮件从服务器发送到特定客户端

Question

I am using WebSockets and trying to set up a code base for my server-client. I know how to send messages from client to server and I also know how to listen those messages from the server side.

However, how can I send a message back to a client ?

// here is the _clientSocket that I accepted
_clientSocket = _serverSocket.Accept();
int received = _clientSocket.Receive(_buffer, 0, _buffer.Length,
    SocketFlags.None);
// here is the message I got from the client
string receivedMsg = Encoding.ASCII.GetString(_buffer);

if (receivedMsg == "1") 
//TO DO: send back to client "This is a test message from server".

Answer 1

Basically you have to use the SendAsync method:

var sendbuffer = new ArraySegment<byte>(Encoding.UTF8.GetBytes("Whatever text you want to send"));

await socket.SendAsync(sendbuffer , WebSocketMessageType.Text, true, CancellationToken.None)
            .ConfigureAwait(false);

Take a look at this example: https://stackoverflow.com/a/26274839/307976

Answer 2

您必须致电：

_clientsocket.Send(...);