No connection could be made because the target machine actively refused it 127.0.0.1:3446

C# Problem Overview

I'm using the WCF4.0 template -REST. I'm trying to make a method that uploads a file using a stream.

The problem always occur at

Stream serverStream = request.GetRequestStream();

Class for streaming:

namespace LogicClass
{
    public class StreamClass : IStreamClass
    {
        public bool UploadFile(string filename, Stream fileStream)
        {
            try
            {
                FileStream fileToupload = new FileStream(filename, FileMode.Create);
                byte[] bytearray = new byte[10000];
                int bytesRead, totalBytesRead = 0;
                do
                {
                    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 project:

[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 Form project: for testing

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 = new 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();
    using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
    {
        int statusCode = (int)response.StatusCode;
        StreamReader reader = new StreamReader(response.GetResponseStream());
    }
}

I've turned off the firewall and my Internet connection, but the error still exists. Is there a better way of testing the uploading method?

Stack trace:

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

C# Solutions

Solution 1 - C#

"Actively refused it" means that the host sent a reset instead of an ack when you tried to connect. It is therefore not a problem in your code. Either there is a firewall blocking the connection or the process that is hosting the service is not listening on that port. This may be because it is not running at all or because it is listening on a different port.

Once you start the process hosting your service, try netstat -anb (requires admin privileges) to verify that it is running and listening on the expected port.

update: On Linux you may need to do netstat -anp instead.

Solution 2 - C#

You don't have to restart the PC. Restart IIS instead.

> Run -> 'cmd'(as admin) and type "iisreset"

Solution 3 - C#

I got a similar error message like TCP error code 10061: No connection could be made because the target machine actively refused it in my current project. I find this 10061 error code cannot distinguish the case that the service endpoint is not started and the case that it is blocked by the firewall. Often, the firewall can be switched off, but the problem is still there.

You can test your code in the below two ways.

Insert code to get time A that service is started and time B that client sends the request to the server. If B is earlier than A, it can cause this problem.
Change your server port to another port that is also available in the system. You will find the same error code reported.

Above is my fix. It works on my machine. I hope it helps!

Solution 4 - C#

You must set up your system proxy You have to go through this path controlpanel>>internet option>>connnection>>LAN settings>> proxy no tik:use proxy server

Solution 5 - C#

Check if any other program is using that port.

If an instance of the same program is still active, kill that process.

Solution 6 - C#

If you use WCF storm, can you even log-in to the WCF service endpoint? If not, and you are hosting it in a Windows service, you probably forgot to register that namespace. It's not very well advertised that this step is required, and it is actually annoying to do.

I use this tool to do this; it automates all those cumbersome steps.

Solution 7 - C#

I had a similar issue. In my case the service would work fine on the developer machine but fail when on a QA machine. It turned out that on the QA machine the application wasn't being run as an administrator and didn't have permission to register the endpoint:

> HTTP could not register URL http://+:12345/Foo.svc/]. Your process does > not have access rights to this namespace (see > http://go.microsoft.com/fwlink/?LinkId=70353 for details).

Refer here for how to get it working without being an admin user: https://stackoverflow.com/a/885765/38258

Solution 8 - C#

Check whether the port number in file Web.config of your webpage is the same as the one that is hosted on IIS.

Solution 9 - C#

I had the same problem on my web server "No connection could be made because the target machine actively refused it 161.x.x.235:5672". I asked the Admin to open the port 5672 on the web server, then it worked fine.

Solution 10 - C#

I had a similar problem rejecting localhost and 127.0.0.1. cmd(admin) netstat -anb found the port running on 169.254.80.80 (dont know were that ip came from because my network ip was 10.0.0.5. after putting in this IP it worked. This Gives correct IP:

IPAddress ipAddress = ipHostInfo.AddressList[0];
Console.WriteLine(ipAddress.ToString());

Solution 11 - C#

I could not restart IIexpress. This is the solution that worked for me

Cleaned the build
Rebuild

Solution 12 - C#

With this error I was able to trace it, thanks to @Yaur, you need to basically check the service (WCF) if it's running and also check the outbound and inbound TCP properties on your advance firewall settings.

Solution 13 - C#

With similar pattern, my rest client is calling the service API, the service called successfully when debugging, but not working on the published code. Error was: Unable to connect to the remote server.

Inner Exception: System.Net.Sockets.SocketException (0x80004005): No connection could be made because the target machine actively refused it serviceIP:443 at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)

Resolution: Set the proxy in Web config.

<system.net>
    <defaultProxy useDefaultCredentials="true">
      <proxy proxyaddress="http://proxy_ip:portno/" usesystemdefault="True"/>
    </defaultProxy>
</system.net>

Solution 14 - C#

I also faced problem in .Net Remoting Service in C#.

I got it solved in 3 steps:

Change Port of Protocol in all the files whereever it is being used.
Run your Host Server Program and make it active.
Now run your client program.

Solution 15 - C#

I had a similar issue. In my case VPN proxy app such as Psiphon ، changed the proxy setup in windows so follow this :

>in Windows 10, search change proxy settings and turn of use proxy server in the manual proxy

Solution 16 - C#

Make Sure all services used by your application are on, which are using host and port to utilize them . For e.g, as in my case, This error can come, If your application is utilizing a Redis server and it is not being able to connect to it on given port and host, thus producing this error .

Solution 17 - C#

For my case, I had an Angular SLA project template with ASP.NET Core.

I was trying to run the IIS Express from the Visual Studio WebUI solution, triggering the "Actively refused it" error.

The problem, in this case, wasn't connected with the Firewall blocking the connection.

It turned out that I had to run the Angular server independently of the Kestrel run because the Server was expecting the UI to run on a specific port but wasn't actually.

For more information, check the official Microsoft documentation.

Solution 18 - C#

I had similar problem. In launchSettings, my IIS Express was configured on one port, and there was another launch profile that started on another ApplicationUrl with another port.

Starting the web app up with the IIS Express profile led me to have the error.

Solution 19 - C#

I am using the Apache ActiveMQ Artemis AMQP message broker. I started getting the "No connection could be made because the target machine actively refused it" exception when trying to send and receive messages with the broker after a reboot. On a computer where the same type of broker still worked, netstat -anb showed that the broker was listening on the expected port 5672. On the computer with the error, the broker was not listening. On the computer with the error, starting the broker resulted in the following warning's appearing in Microsoft Event Viewer's "Windows Logs > System":

 The system failed to register host (A or AAAA) resource records for network adapter
 with settings:

            Adapter Name : {286EE2DA-3D81-41AE-VE5G-5D761FD3925E}
            Host Name : mypc
            Primary Domain Suffix : myco.com
            DNS server list :
              	55.77.168.1, 74.86.130.1
            Sent update to server : 186.952.335.157:45
            IP Address(es) :
              182.269.1.437

 Either the DNS server does not support the DNS dynamic update protocol or the authoritative zone for the specified DNS domain name does not accept dynamic updates.

 To register the DNS host (A or AAAA) resource records using the specific DNS domain name and IP addresses for this adapter, contact your DNS server or network systems administrator.

I was able to use the broker without error after I ran the following in a cmd.exe with administrative privileges, rebooted, and waited about fifteen minutes:

       ipconfig /flushdns
       ipconfig /renew
       ipconfig /registerdns

Content Type	Original Author	Original Content on Stackoverflow
Question	fiberOptics	View Question on Stackoverflow
Solution 1 - C#	Yaur	View Answer on Stackoverflow
Solution 2 - C#	gradosevic	View Answer on Stackoverflow
Solution 3 - C#	Cary	View Answer on Stackoverflow
Solution 4 - C#	paiam sahari	View Answer on Stackoverflow
Solution 5 - C#	Tanveer-Ibn- Haresh	View Answer on Stackoverflow
Solution 6 - C#	Matt	View Answer on Stackoverflow
Solution 7 - C#	Nick Gotch	View Answer on Stackoverflow
Solution 8 - C#	Sarath KS	View Answer on Stackoverflow
Solution 9 - C#	Hung Vu	View Answer on Stackoverflow
Solution 10 - C#	Paul Grobbelaar	View Answer on Stackoverflow
Solution 11 - C#	Mankgwanyane Tlaka	View Answer on Stackoverflow
Solution 12 - C#	PinoyDev	View Answer on Stackoverflow
Solution 13 - C#	SFK	View Answer on Stackoverflow
Solution 14 - C#	Amandeep Kaur Arora	View Answer on Stackoverflow
Solution 15 - C#	Ali Besharati	View Answer on Stackoverflow
Solution 16 - C#	Farhan	View Answer on Stackoverflow
Solution 17 - C#	Arsen Khachaturyan	View Answer on Stackoverflow
Solution 18 - C#	GeorgiG	View Answer on Stackoverflow
Solution 19 - C#	dabark	View Answer on Stackoverflow