Java tutorial
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For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package com.vikram.kdtree; import java.io.FileInputStream; import java.io.IOException; import java.io.InterruptedIOException; import java.net.ServerSocket; import java.net.Socket; import java.util.Locale; import java.util.Properties; import javax.net.ssl.SSLServerSocketFactory; import org.apache.http.ConnectionClosedException; import org.apache.http.HttpConnectionFactory; import org.apache.http.HttpEntityEnclosingRequest; import org.apache.http.HttpException; import org.apache.http.HttpRequest; import org.apache.http.HttpResponse; import org.apache.http.HttpServerConnection; import org.apache.http.impl.DefaultBHttpServerConnection; import org.apache.http.impl.DefaultBHttpServerConnectionFactory; import org.apache.http.protocol.BasicHttpContext; import org.apache.http.protocol.HttpContext; import org.apache.http.protocol.HttpProcessor; import org.apache.http.protocol.HttpProcessorBuilder; import org.apache.http.protocol.HttpRequestHandler; import org.apache.http.protocol.HttpService; import org.apache.http.protocol.ResponseConnControl; import org.apache.http.protocol.ResponseContent; import org.apache.http.protocol.ResponseDate; import org.apache.http.protocol.ResponseServer; import org.apache.http.protocol.UriHttpRequestHandlerMapper; import org.apache.http.util.EntityUtils; /** * Basic, yet fully functional and spec compliant, HTTP/1.1 file server. */ public class ElementalHttpServer implements Runnable { @Override public void run() { try { main(null); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) throws Exception { // Set up the HTTP protocol processor HttpProcessor httpproc = HttpProcessorBuilder.create().add(new ResponseDate()) .add(new ResponseServer("Test/1.1")).add(new ResponseContent()).add(new ResponseConnControl()) .build(); // Set up request handlers UriHttpRequestHandlerMapper reqistry = new UriHttpRequestHandlerMapper(); reqistry.register("*", new HttpPostReceiver()); // Set up the HTTP service HttpService httpService = new HttpService(httpproc, reqistry); Properties properties = new Properties(); properties.load(new FileInputStream("Config.properties")); Thread t = new RequestListenerThread(Integer.valueOf(properties.getProperty("requestPort")), httpService, null); t.setDaemon(false); t.start(); } static class HttpPostReceiver implements HttpRequestHandler { public HttpPostReceiver() { super(); } public void handle(final HttpRequest request, final HttpResponse response, final HttpContext context) throws HttpException, IOException { String method = request.getRequestLine().getMethod().toUpperCase(Locale.ENGLISH); System.out.println("\n\nReceived a " + method + " request!"); if (method.equals(AWSDeploymentManager.LayerBRequestType)) { if (request instanceof HttpEntityEnclosingRequest) { String text = EntityUtils.toString(((HttpEntityEnclosingRequest) request).getEntity()); // Push this request into the queue AWSDeploymentManager.requestQueue.add(text.trim()); // Return success code response.setStatusCode(200); response.setReasonPhrase("OK"); } } } } static class RequestListenerThread extends Thread { private final HttpConnectionFactory<DefaultBHttpServerConnection> connFactory; private final ServerSocket serversocket; private final HttpService httpService; public RequestListenerThread(final int port, final HttpService httpService, final SSLServerSocketFactory sf) throws IOException { this.connFactory = DefaultBHttpServerConnectionFactory.INSTANCE; this.serversocket = sf != null ? sf.createServerSocket(port) : new ServerSocket(port); this.httpService = httpService; } @Override public void run() { System.out.println("Listening on port " + this.serversocket.getLocalPort()); while (!Thread.interrupted()) { try { // Set up HTTP connection Socket socket = this.serversocket.accept(); System.out.println("Incoming connection from " + socket.getInetAddress()); HttpServerConnection conn = this.connFactory.createConnection(socket); // Start worker thread Thread t = new WorkerThread(this.httpService, conn); t.setDaemon(true); t.start(); } catch (InterruptedIOException ex) { break; } catch (IOException e) { System.err.println("I/O error initialising connection thread: " + e.getMessage()); break; } } } } static class WorkerThread extends Thread { private final HttpService httpservice; private final HttpServerConnection conn; public WorkerThread(final HttpService httpservice, final HttpServerConnection conn) { super(); this.httpservice = httpservice; this.conn = conn; } @Override public void run() { System.out.println("New connection thread"); HttpContext context = new BasicHttpContext(null); try { while (!Thread.interrupted() && this.conn.isOpen()) { this.httpservice.handleRequest(this.conn, context); } } catch (ConnectionClosedException ex) { System.err.println("Client closed connection"); } catch (IOException ex) { System.err.println("I/O error: " + ex.getMessage()); } catch (HttpException ex) { System.err.println("Unrecoverable HTTP protocol violation: " + ex.getMessage()); } finally { try { this.conn.shutdown(); } catch (IOException ignore) { } } } } }