Solved

Windows Service with UDP

Posted on 2016-11-07
2
36 Views
Last Modified: 2016-11-07
I need to create a Windows Service to receive connections UDP and send a command back to server.


I have this code

protected override void OnStart(string[] args)
{
  _mStarted = true;
  _mWorkReceberComando = new Thread(ReceberComando);
  _mWorkReceberComando.Name = "Recebimento Comando";
  _mWorkReceberComando.Start();
}

 private void ReceberComando()
    {
        _endPoint = new IPEndPoint(IPAddress.Any, _port);
        var udpClient = new UdpClient(_endPoint);
        while (_mStarted)
        {
            var remoteEp = new IPEndPoint(IPAddress.Any, 0);
            var data = udpClient.Receive(ref remoteEp);

            var receivedString = BitConverter.ToString(data);

            var comandoByte = new ObterComandocAck(receivedString);
            var ipEndereco = remoteEp.Address;

            udpClient.Connect(ipEndereco.ToString(), _port);
            udpClient.Send(comandoByte, comandoByte.Length);

            Console.WriteLine(receivedString); 
        }
    }

Open in new window


I'm receiving this erro:

An existing connection was forcibly closed by the remote host

HYRESULT -2147467259
0
Comment
Question by:berechit
2 Comments
 
LVL 40

Accepted Solution

by:
Kyle Abrahams earned 500 total points
ID: 41877889
Did you verify you can connect to the port manually?

Before creating the service I would create  a console application that essentially does the same thing.
Step thru and find out where it's erroring.

Based on that error message the the client doesn't like the connection for some reason.  (Firewall?)
0
 

Author Comment

by:berechit
ID: 41878177
Hi Kyle,

Yes I did.

I'm need to connect to a GPS tracker and that need to open the connection first then I need to send the response in the same connection.

I've changed code to this:

private void ReceberComando()
    {
        _endPoint = new IPEndPoint(IPAddress.Any, _port);
        var udpClient = new UdpClient(_endPoint);
        while (_mStarted)
        {
            var remoteEp = new IPEndPoint(IPAddress.Any, 0);
            var data = udpClient.Receive(ref remoteEp);

            var receivedString = BitConverter.ToString(data);

            var comandoByte = new ObterComandocAck(receivedString);
            var ipEndereco = remoteEp.Address;

            udpClient.Connect(ipEndereco.ToString(), _port);
            udpClient.Send(comandoByte, comandoByte.Length,remoteEp  );

            Console.WriteLine(receivedString); 
        }
    }

Open in new window


Thanks for your help.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Installing IIS after Visual Studio 2015 Community Edition 5 46
How to measure sizes and angles in scanned images ? 3 51
Achieve json result 2 64
ASP.NET 5 Templates 2 65
Summary: Persistence is the capability of an application to store the state of objects and recover it when necessary. This article compares the two common types of serialization in aspects of data access, readability, and runtime cost. A ready-to…
This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
This is a video describing the growing solar energy use in Utah. This is a topic that greatly interests me and so I decided to produce a video about it.
Need to grow your business through quality cloud solutions? With everything required to build a cloud platform and solution, you may feel like the distance between you and the cloud is quite long. Help is here. Spend some time learning about the Con…

919 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now