Kindling

The fuel that'll ignite your application.

A programmable TLS HTTP/1.1 server written with no dependencies.

Key Features

• SSL/TLS only (using SSLServerSocket)
• No magic with visible control flow
• Light weight
• No Dependencies
• Virtual Threads

Example

Below is an example implementation of a Kindling Server with a simple request handler that responds with a JSON object to a GET request on the / resource.

public class Main {
    public static void main(String[] args) throws KindlingException {
        KindlingServer server = KindlingServer.getInstance();
        server.installRequestHandler(new RequestHandler() {
            /**
             * Tell the server what type of request this handler can work with
             */
            @Override
            public boolean accepts(HttpRequest httpRequest) throws KindlingException {
                return httpRequest.getHttpMethod().equals(HttpMethod.GET) && httpRequest.getResource().equals("/");
            }

            /**
             * Do your business logic here
             */
            @Override
            public HttpResponse handle(HttpRequest httpRequest) throws KindlingException {
                return new HttpResponse.Builder()
                        .status(HttpStatus.OK)
                        .headers(new HashMap<>() {
                            {
                                put("Content-Type", "application/json");
                            }
                        })
                        .content("{\"key\": \"value\"}")
                        .build();
            }
        });

        // serve our server
        server.serve(8443, Path.of("mykeystore.p12"), "password");
    }
}

Let's break down the components above.

• KindlingServer
  • The singleton that contains the application context
  • Manages the SSLServerSocket and the virtual thread that is assigned to each request
• RequestHandler
  • Accepts
    • Called when a request is received
    • Return a boolean telling the server if we can handle this request
  • Handle
    • If the accepts() method returns true, handle() is called
    • Do your business logic here, returning an HttpResponse
• Server Serve
  • Start serving the SSLServerSocket on the provided port with the given P12 keystore