Question

有人有没有使用TD Ameritrade流API来与C＃一起使用？他们在https://developer.tdameritrade.com/content/streaming-data上有一些文档和JavaScript示例。我已经在https://js.do/上使用了JavaScript示例，但是无法在.NET中获得任何类似的功能。这是我正在尝试做的简化版本。我无法确切包含要发送的内容，因为我正尝试发送包含帐户信息的登录消息，但是我可以说我将JavaScript测试中使用的确切JSON消息复制并粘贴到了LoginJSON文件中在此示例中为.txt。在此示例中，套接字将在我发送消息后立即关闭，根本没有文本响应。但是，如果我发送了故意格式错误的消息，则实际上会收到文本响应，指出该消息格式错误，然后断开套接字连接。我的理解是他们的支持没有反应，这是正常的。 https://www.youtube.com/channel/UCBsTB02yO0QGwtlfiv5m25Q上有一些python示例，但是我已经看了全部，还没有学到任何帮助我使代码正常工作的东西。

        ClientWebSocket socket = new ClientWebSocket();
        var connectAsync = socket.ConnectAsync(new Uri("wss://streamer-ws.tdameritrade.com/ws"), CancellationToken.None);
        string loginRequest;
        using (StreamReader re = new StreamReader("LoginJSON.txt")) {
            loginRequest = re.ReadToEnd();
        }

        connectAsync.Wait();

        Thread readThread = new Thread(
            delegate(object obj)
            {
                while (true) {
                    if (socket.State == WebSocketState.Open) {
                        Console.Out.WriteLine("Waiting");
                        byte[] recBytes = new byte[1024];
                        var clientBuffer = new ArraySegment<byte>(recBytes);
                        var receiveAsync = socket.ReceiveAsync(clientBuffer, CancellationToken.None);
                        receiveAsync.Wait();
                        switch (receiveAsync.Result.MessageType) {
                            case WebSocketMessageType.Text:
                                var s = Encoding.UTF8.GetString(recBytes);
                                Console.Out.WriteLine(s.Trim());
                                break;
                            case WebSocketMessageType.Close:
                                Console.Out.WriteLine("Close message received");
                                break;
                            default:
                                throw new ArgumentOutOfRangeException();
                        }
                    }
                }
            });

        readThread.Start();
        socket.SendAsync(Encoding.UTF8.GetBytes(loginRequest), WebSocketMessageType.Text, true, CancellationToken.None);
        Console.ReadLine();

Answer 1

我遇到了同样的问题，并且设法解决了。在我的情况下，时间戳记准备不正确，有必要计算时间戳记以获取TokenTimestamp属性，该属性应转换为通用时间。对不起，我的英语翻译来自谷歌翻译。 :)这是正确的代码：

DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
DateTime tokenDate = Convert.ToDateTime(userPrincipal.StreamerInfo.TokenTimestamp);
TimeSpan tokenEpoch = tokenDate.ToUniversalTime() - epoch;
long timestamp = (long)Math.Floor(tokenEpoch.TotalMilliseconds);

var credentials = new Credentials
{
    userid = userPrincipal.Accounts[0].AccountId,
    token = userPrincipal.StreamerInfo.Token,
    company = userPrincipal.Accounts[0].Company,
    segment = userPrincipal.Accounts[0].Segment,
    cddomain = userPrincipal.Accounts[0].AccountCdDomainId,
    usergroup = userPrincipal.StreamerInfo.UserGroup,
    accesslevel = userPrincipal.StreamerInfo.AccessLevel,
    authorized = "Y",
    timestamp = timestamp,
    appid = userPrincipal.StreamerInfo.AppId,
    acl = userPrincipal.StreamerInfo.Acl
};
var credentialArr = credentials.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public).Select(p => new KeyValuePair<string, string>(p.Name, p.GetValue(credentials, null).ToString()));
var loginRequest = new Request
{
    service = "ADMIN",
    command = "LOGIN",
    requestid = "0",
    account = userPrincipal.Accounts[0].AccountId,
    source = userPrincipal.StreamerInfo.AppId,
    parameters = new Parameters
    {
        credential = string.Join("&", credentialArr.Where(c => !string.IsNullOrWhiteSpace(c.Value)).Select(c => string.Format("{0}={1}", HttpUtility.UrlEncode(c.Key, Encoding.UTF8), HttpUtility.UrlEncode(c.Value, Encoding.UTF8)))),
        token = userPrincipal.StreamerInfo.Token,
        version = "1.0",
        qoslevel = "0"
    }
};
var req = JsonConvert.SerializeObject(Requests.ToRequests(loginRequest), Formatting.None, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
socketClient = new WebSocket(string.Format("wss://{0}/ws", userPrincipal.StreamerInfo.StreamerSocketUrl));
if(Environment.OSVersion.Version.Major > 5)
{
    socketClient.SslConfiguration.EnabledSslProtocols = (System.Security.Authentication.SslProtocols)3072;
    socketClient.SslConfiguration.ServerCertificateValidationCallback = (sender, cert, chain, sslPolicyErrors) => { return true; };
}
socketClient.Connect();
socketClient.Send(req);

Answer 2

我尝试了WebSocketClient方法，但从未使其正常运行。我遇到了与您完全相同的错误。究竟。我发现WebSocketClient实际上使使用javascript实现非常简单的事情变得复杂。只需让您的C＃调用javascript函数来执行javascript并将响应发送回给您即可。我已经在Blazor应用程序中使用C＃以这种方式工作，并且可以无缝运行。

Answer 3

@米哈伊尔，你会分享你获取用户主体的代码吗？这是我的代码，但即使我的访问令牌有效，我也得到 status=401（我已经通过 API 页面对其进行了测试）：

    using System;
    using WebSocketSharp;
    using System.Net.Http;
    using System.Threading.Tasks;

namespace TdLogin
{
    class Program
    {
        static async Task  Main(string[] args)
        {
            string accessToken = util.accessToken; // get the access token from util 
            Console.WriteLine("Hello World!");
            var client = new HttpClient();
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("bearer", accessToken);
            var result = await client.GetAsync("https://api.tdamer`enter code here`itrade.com/v1/userprincipals?fields=streamerSubscriptionKeys%2CstreamerConnectionInfo");
            Console.WriteLine("status= {0}", result.StatusCode);
            Console.WriteLine(result.Content);
            Console.ReadKey();
        }
    }
}

TD Ameritrade .NET

3 个答案: