Der Titel wird wie folgt umgeschrieben: Die Verbindung zu 127.0.0.1:3446 wurde vom Zielcomputer aktiv abgelehnt

Question

Ich verwende die WCF4.0-Vorlage -REST. Ich versuche, eine Methode zum Hochladen von Dateien mithilfe eines Streams zu erstellen.

问题总是发生在

Stream serverStream = request.GetRequestStream();

流式传输类：

Namespace LogicClass
{
    öffentliche Klasse StreamClass: IStreamClass
    {
        public bool UploadFile(string filename, Stream fileStream)
        {
            versuchen
            {
                FileStream fileToupload = new FileStream(filename, FileMode.Create);
                byte[] bytearray = neues Byte[10000];
                int bytesRead, totalBytesRead = 0;
                Tun
                {
                    bytesRead = fileStream.Read(bytearray, 0, bytearray.Length);
                    totalBytesRead += bytesRead;
                } while (bytesRead > 0);

                fileToupload.Write(bytearray, 0, bytearray.Length);
                fileToupload.Close();
                fileToupload.Dispose();
            }
            Catch (Exception ex) { throw new Exception(ex.Message); }
            return true;
        }
    }
}

REST-Einstellungen:

[WebInvoke(UriTemplate = "AddStream/{filename}", Method = "POST", BodyStyle = WebMessageBodyStyle.Bare)]
public bool AddStream(string filename, System.IO.Stream fileStream)
{
    LogicClass.FileComponent rest = new LogicClass.FileComponent();
    return rest.AddStream(filename, fileStream);
}

Windows 窗体项目:用于测试

private void button24_Click(object sender, EventArgs e)
{
    byte[] fileStream;
    using (FileStream fs = new FileStream("E:stream.txt", FileMode.Open, FileAccess.Read, FileShare.Read))
    {
        fileStream = neues Byte[fs.Length];
        fs.Read(fileStream, 0, (int)fs.Length);
        fs.Close();
        fs.Dispose();
    }

    string baseAddress = "http://localhost:3446/File/AddStream/stream.txt";
    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(baseAddress);
    request.Method = "POST";
    request.ContentType = "text/plain";
    Stream serverStream = request.GetRequestStream();
    serverStream.Write(fileStream, 0, fileStream.Length);
    serverStream.Close();
    Verwenden von (HttpWebResponse Response = request.GetResponse() als HttpWebResponse)
    {
        int statusCode = (int)response.StatusCode;
        StreamReader-Reader = new StreamReader(response.GetResponseStream());
    }
}

我已关闭防火墙和 Internet 连接,但错误仍然存在.Gibt es eine bessere Möglichkeit, die Upload-Methode zu testen?

Stack-Trace:

At System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress Socket-Adresse) at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception&Exception)

Answer 1

您不必重新启动电脑。而是重新启动 IIS。

Answer 2

“主动拒绝”意味着当您尝试连接时主机发送了重置而不是确认。因此，这在您的代码中不是问题。防火墙阻止连接，或者托管服务的进程未侦听该端口。这可能是因为它根本没有运行或者因为它正在侦听不同的端口。

启动托管服务的进程后，请尝试使用netstat -anb（需要管理员权限）来验证它是否正在运行并侦听预期的端口。

更新：在 Linux 上，您可能需要执行 netstat -anp。