Quick HTTP

QuickHandler.java

package quickhttp;

import com.sun.net.httpserver.HttpContext;

public interface QuickHandler {
	byte[] handle(final HttpContext ctx);
}

QuickHost.java

package quickhttp;

import com.sun.net.httpserver.HttpContext;

public class QuickHost {

	public static void main(String[] args) {
		System.out.println("Quick HTTP (version 1.0");
		
		final QuickServer server = QuickServer.create(9998);
		server.register("/quickhttp/help/", "text/plain", new HelpHandler())
		      .start();

	}

	static class HelpHandler implements QuickHandler {

		public byte[] handle(HttpContext ctx) {
			String output = "";
			final long mb = 1024 * 1024;
			
			final Runtime runtime = Runtime.getRuntime();
			output += String.format("free memory: %s MB\n", runtime.freeMemory() / mb);
			output += String.format("max memory: %s MB\n", runtime.maxMemory() / mb);
			output += String.format("total memory: %s MB\n", runtime.totalMemory() / mb);
			
			return output.getBytes();
		}
		
	}
}

QuickServer.java

package quickhttp;

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;

import com.sun.net.httpserver.Headers;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

public class QuickServer {
	private HttpServer server = null;
	
	public static QuickServer create(final int port) {
		return new QuickServer(port);
	}
	
	private QuickServer(final int port) {
		final InetSocketAddress address = new InetSocketAddress(port);
		try {
			this.server = HttpServer.create(address, 0);
		}
		catch (IOException e) {
			System.out.println(e.getMessage());
		}
	}
	
	public QuickServer register(final String path, final String contentType, final QuickHandler handler) {
			
		this.server.createContext(path, new HttpHandler() {

			public void handle(HttpExchange ex) throws IOException {
				byte[] response = handler.handle(ex.getHttpContext());
				
				final Headers headers = ex.getResponseHeaders();
				headers.add("Content-type", contentType);
				
				ex.sendResponseHeaders(200, response.length);
				
				final OutputStream output = ex.getResponseBody();
				output.write(response);
				output.flush();
				output.close();
			}
			
		});
		return this;
	}
	
	public QuickServer start() {
		this.server.setExecutor(null);
		this.server.start();
		return this;
	}
}