Connecting to Java server with open localhost does not work

Question

When I use MS telnet, I'm getting every character repeated WITHOUT CRLF but with OSX telnet, my input is not sent to server until I CRLF.

So I found I can first open (MS) telnet and type

set crlf

but then when I try to open the connection, the client sits there and says it's Connecting but then fails!

What's the difference between these commands below and how can I connect by using open command?

Commands:

Working:

telnet localhost 8010 // but I get unwanted auto-send

Not working:

telnet
set crlf

open localhost 8010

Code:

   public class SingleThreadedBlockingServerBasic {

    public static void main(String[] args) throws IOException {


        ServerSocket serverSock = new ServerSocket(8010);


        while (true) {

            // Connect client and serverSock - Tell serverSock to accept client Socket
            Socket client = serverSock.accept();

            InputStream in = client.getInputStream();
            OutputStream out = client.getOutputStream();

            int data;

            // Read the int-read into the 8k buffer at offset 0 from the inputstream. inputstream receives data off
            // of the client Socket.
            in.transferTo(out);
        }
    }
}