tcp connection from unix to java

Question

Hello everybody.

I'm looking for something,I don't know if it exists.

I have a Java server, something like

while (true) {
            try {
                Socket socket = server.accept();
                new ConnectionHandler(socket);
                System.out.println("Waiting for a new client message...");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

What I need, is to do a unix client to connect to this server. I need only to send a message, and my server will launch a process. Is there a way to build a unix client ?

Thanks alot.

Answer 1

• At least for testing, you could use telnet to connect to your service, and issue text commands.

• Netcat could be used as well, just give it the IP address and port where your Java server is running. e.g.

  echo "My Message" | nc 192.168.1.42 10001

• Build your own client in Java.

Answer 2

If you don't want to develop a client in Java you could consider the unix nc (netcat) command. It's a veritable swiss-army knife of TCP and UDP.