c#之无法在 WebSocket 客户端中接收消息

我正在使用 websocket4net在 C# 中创建 WebSocket 客户端并与服务器通信。

我可以发送数据，但无法收到服务器发回的回复。 Client_MessageReceived 根本没有被触发。不过，我可以在 WireShark 中看到回复。

我使用的代码如下:

class CommandRPC 
{ 
    public String jsonrpc; 
    public String method; 
    public Parameter @params; 
    public String id; 
}     
 
class Parameter 
{ 
    public String cmd; 
} 
 
class Program 
{ 
    static WebSocket Client; 
 
    static CommandRPC command; 
 
    static void Main(string[] args) 
    { 
        Client = new WebSocket("ws://10.131.35.32/DIAG"); 
        Client.Opened += new EventHandler(Client_Opened); 
        Client.Error += new EventHandler<SuperSocket.ClientEngine.ErrorEventArgs>(Client_Error); 
        Client.Closed += new EventHandler(Client_Closed); 
        Client.MessageReceived += new EventHandler<MessageReceivedEventArgs>(Client_MessageReceived); 
        Client.DataReceived += new EventHandler<DataReceivedEventArgs>(Client_DataReceived); 
 
 
        command = new CommandRPC(); 
        command.jsonrpc = "2.0"; 
        command.method = "SystemExec"; 
        command.@params = new Parameter(); 
        command.@params.cmd = "ls"; 
        command.id = "8302144"; 
 
        Client.Open(); 
        System.Threading.Thread.Sleep(2000); 
        Console.WriteLine(Client.State); 
        Console.ReadLine(); 
    } 
 
 
    static void Client_DataReceived(object sender, DataReceivedEventArgs e) 
    { 
        Console.WriteLine("DATA received : " + e.Data); 
    } 
 
    static void Client_MessageReceived(object sender, MessageReceivedEventArgs e) 
    { 
        Console.WriteLine("Message received : " + e.Message);             
    } 
 
    static void Client_Closed(object sender, EventArgs e) 
    { 
        Console.WriteLine("Websocket closed"); 
    } 
 
    static void Client_Error(object sender, SuperSocket.ClientEngine.ErrorEventArgs e) 
    { 
        Console.WriteLine("Error thrown trying to open websocket : " + e.Exception.Message); 
    } 
 
    static void Client_Opened(object sender, EventArgs e) 
    { 
        var json = new JavaScriptSerializer().Serialize(command);             
        Console.WriteLine("Websocket connection open."); 
 
        for (int i = 1; i <= 2; i++) 
        { 
            Console.WriteLine("Sending Json: " + i.ToString()); 
            Client.Send(json); 
            System.Threading.Thread.Sleep(500); 
        }    
    } 
} 

请您参考如下方法:

使用

   Task.Delay(300) //instead of Thread.Sleep(2000) 

它应该可以解决问题