TcpClient - An existing connection was forcibly closed by the remote host

Question

The Info I have been developing a web http server in c# and decided to add a remote console feature. The console can be used from any location and uses a TcpListener (web server) and a TcpClient (remote console) to send commands and functions through. The Code This is what my server looks like: ``` TcpListener consoleListener = new TcpListener(consolePort); consoleListener.Start(); byte[] bytes = new Byte[256]; string data = null; while (true) { TcpClient client = consoleListener.AcceptTcpClient(); data = null; byte[] msg = { 0 }; int i; while ((i = client.GetStream().Read(bytes, 0, bytes.Length)) != 0) { data = System.Text.Encoding.ASCII.GetString(bytes, 0, i); if (data == "shutdown") { //Server shutdown logic. } //Other commands here... else { msg = Encoding.ASCII.GetBytes("Invalid command. Type 'help' or '?' to get a list of commands."); } client.GetStream().Write(msg, 0, msg.Length); //sends return message to console } client.Close(); //closes connection between client and server…

Accepted Answer

It seems that your client closes the connection after one message.

```
responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes);
client.Close();
return responseData; //returns what server writes
```

If you want to persist the connection you should have a loop on the client similar to the one you have on the server. If you want to establish a new connection every time you should close the stream gracefully on the server and not have a loop like this. You will still need to loop in case the message is longer or you need to specify max length for the command.

TcpClient - An existing connection was forcibly closed by the remote host

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