Start or Stop a jetty ServerConnector without server restart

Question

I use jetty server to handle client requests and have a requirement where I need to start or stop one or few ServerConnectors on demand without restarting the server to which these connectors are attached to.

For example.

ServerConnector httpConnector;
ServerConnector httpsConnector;
Server server;
server.addConnector(httpConnector);
server.addConnector(httpsConnector);
server.start()

Need to start/stop/cancel a particular connector without forcing server to restart.

Answer 1

You would have to do the following ...

// TODO: Have a reference to the Connector you are going to work with

// Remove from server first.
server.removeConnector(connector);

// Stop the connector.
// NOTE: Existing connections will still live on.  
// This will only stop accepting new connections.
connector.stop(); // might take a while (waiting for acceptors to close)

// TODO: do what you want with this connector

// Eg: harshly close existing connections
connector.getConnectedEndPoints().forEach((endpoint)-> {
    endpoint.close();
});

// Re-add stopped connector if you want
// This will start connector as well
// This can fail (eg: if port is already in use)
server.addConnector(connector);

Answer 2

You can call stop on the connector to stop it and start to start it again. To get the relevant connector there are two solutions:

• Keep the created connector-instances somewhere and call the methods
• Get all connectors of a server by calling getConnectors , iterate over them, find the one you want to stop and call stop or start on it to stop or start it.