How can a Server open a TCP connection through a Client which was connected to server before? Let say we have simple server like the code shows below; server waits for client connections and a handler thread serves connected clients. Client as below, every time wants to do an operation with the server, reestablish the connection, communicate with server and then close the connection. So, if server would like to open a TCP connection through the client(when there is no an active connection from client to server), how it can be done?
Server Code
public class DServer {
public static void main(String[] args) {
ServerSocket serverSocket = new ServerSocket(7800);
while(true) {
Socket socket = serverSocket.accept();
System.out.println("Server established a new connection");
HandleConnection handler = new HandleConnection(socket);
handler.start();
}
}
}
Client Code
public class DClient{
public static void main(String[] args) {
Socket socket = new Socket("localhost", 7800);
ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
ObjectInputStream in = new ObjectInputStream(socket.getInputStream());
//for every operation you do, first reestablish the connection,
//communicate with server, then close the connection.
}
}
