ClientWebSocket.ConnectAsync立即关闭

using System;
using System.Net.WebSockets;
using System.Threading;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        using (ClientWebSocket webSocket = new ClientWebSocket())
        {
            Uri serverUri = new Uri("wss://yourserver.com/websocket");
            CancellationTokenSource cts = new CancellationTokenSource();

            try
            {
                await webSocket.ConnectAsync(serverUri, cts.Token);
                Console.WriteLine("WebSocket connection established.");

                // 处理 WebSocket 消息
                while (webSocket.State == WebSocketState.Open)
                {
                    byte[] buffer = new byte[1024 * 4];
                    WebSocketReceiveResult result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), cts.Token);

                    if (result.MessageType == WebSocketMessageType.Close)
                    {
                        break;
                    }

                    string message = System.Text.Encoding.UTF8.GetString(buffer, 0, result.Count);
                    Console.WriteLine($"Received message: {message}");
                }
            }
            catch (WebSocketException ex)
            {
                Console.WriteLine($"WebSocket error: {ex.Message}");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"General error: {ex.Message}");
            }
        }
    }
}