小编Nar*_*gir的帖子

我从 SignalR 客户端应用程序连接到 SignalRHub 时遇到问题，下面给出的是错误日志-

info: Microsoft.AspNetCore.Sockets.Client.WebSocketsTransport[0]
      02/01/2018 15:20:13: Connection Id f763a939-3fb9-4812-ae6e-dfe3198ab37b: Starting transport. Transfer mode: Text.
fail: Microsoft.AspNetCore.Sockets.Client.HttpConnection[9]02/01/2018 15:20:13: Connection Id f763a939-3fb9-4812-ae6e-dfe3198ab37b: Failed to start connection. Error starting transport 'WebSocketsTransport'.
System.Net.WebSockets.WebSocketException (0x80004005): Unable to connect to the remote server ---> System.Net.WebException: The remote server returned an error: (404) Not Found.
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task …

我想通过 Signalr 传递附加参数而不进行任何重大更改。

正在使用的 SignalR 集线器 web api 端信号器 nuget 包是“Microsoft.AspNetCore.SignalR”版本=“1.0.3”。正在使用的客户端 nuget 包是 "Microsoft.AspNetCore.SignalR.Client" Version="1.0.3" />

信号器集线器 web api 端的初始代码如下-

public async Task<bool> SendResponse(string uniqueId, string param1, string param2, string param3, string param4, string param5, string param6)
{
    await HubContext.Clients.Group(uniqueId).SendAsync("SendResponse", param1, param2, param3, param4, param5,param6);
    return true;
}

客户端的初始代码-

Connection.On<string, string, string, string, string, string>("SendResponse",
async (param1, param2, param3, param4, param5, param6) =>
{
    //code here.
});

当他想要更新 nuget 包时，此客户端代码通过 nuget 包和它的应用程序所有者与所有人共享。

直到现在一切正常，出现了一个改变的需求（传递一个带有响应的新参数）。

为了满足这个要求，我在下面给出了信号集线器端的代码更改 -

public async Task<bool> SendResponse(string uniqueId, …

我正在开发一个应用程序，在其中使用 WinSCP .NET 程序集（版本 5.5.0.3839）下载文件

我下载文件的代码如下

public bool ReceiveFile(string ftpFilePath,out String downloadedFileName, String DestinationPath)
{
    bool sendingStatus = false;
    downloadedFileName = string.Empty;
    try
    {
        if (sessionOptions != null)
        {
            using (Session session = new Session())
            {
                // Connect
                bool isSessionOpened = OpenSession(session);
                if (isSessionOpened)
                {
                    // Upload files
                    TransferOptions transferOptions = new TransferOptions();
                    transferOptions.TransferMode = TransferMode.Automatic;

                    TransferOperationResult transferResult;
                    transferResult = session.GetFiles(ftpFilePath, DestinationPath, false, transferOptions);
                    // Throw on any error
                    transferResult.Check();

                    // Print results
                    foreach (TransferEventArgs transfer in transferResult.Transfers)
                    {
                        sendingStatus …