Java tutorial
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For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package wh.contrib; import java.io.IOException; import java.io.InterruptedIOException; import java.net.InetSocketAddress; import java.net.URL; import java.util.ArrayList; import java.util.List; import org.apache.http.HttpEntity; import org.apache.http.HttpException; import org.apache.http.HttpHost; import org.apache.http.HttpRequest; import org.apache.http.HttpResponse; import org.apache.http.impl.DefaultConnectionReuseStrategy; import org.apache.http.params.BasicHttpParams; import org.apache.http.impl.nio.DefaultClientIOEventDispatch; import org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor; import org.apache.http.message.BasicHttpRequest; import org.apache.http.nio.NHttpConnection; import org.apache.http.nio.protocol.BufferingHttpClientHandler; import org.apache.http.nio.protocol.EventListener; import org.apache.http.nio.protocol.HttpRequestExecutionHandler; import org.apache.http.nio.reactor.ConnectingIOReactor; import org.apache.http.nio.reactor.IOEventDispatch; import org.apache.http.nio.reactor.SessionRequest; import org.apache.http.params.CoreConnectionPNames; import org.apache.http.params.HttpParams; import org.apache.http.params.CoreProtocolPNames; import org.apache.http.protocol.BasicHttpProcessor; import org.apache.http.protocol.HttpContext; import org.apache.http.protocol.ExecutionContext; import org.apache.http.protocol.RequestConnControl; import org.apache.http.protocol.RequestContent; import org.apache.http.protocol.RequestExpectContinue; import org.apache.http.protocol.RequestTargetHost; import org.apache.http.protocol.RequestUserAgent; import org.apache.http.util.EntityUtils; /** * Copied HttpClient example code, performs a single request to wowhead. */ public class RewardOptimizerHttpClient { public static void main(String[] args) throws Exception { HttpParams params = new BasicHttpParams(); params.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 30000) .setIntParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10000) .setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 64 * 1024) .setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false) .setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true) .setParameter(CoreProtocolPNames.USER_AGENT, "HttpComponents/1.1 (RewardOptimizer - karlthepagan@gmail.com)"); final ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(2, params); BasicHttpProcessor httpproc = new BasicHttpProcessor(); httpproc.addInterceptor(new RequestContent()); httpproc.addInterceptor(new RequestTargetHost()); httpproc.addInterceptor(new RequestConnControl()); httpproc.addInterceptor(new RequestUserAgent()); httpproc.addInterceptor(new RequestExpectContinue()); // We are going to use this object to synchronize between the // I/O event and main threads RequestCount requestCount = new RequestCount(1); BufferingHttpClientHandler handler = new BufferingHttpClientHandler(httpproc, new MyHttpRequestExecutionHandler(requestCount), new DefaultConnectionReuseStrategy(), params); handler.setEventListener(new EventLogger()); final IOEventDispatch ioEventDispatch = new DefaultClientIOEventDispatch(handler, params); Thread t = new Thread(new Runnable() { public void run() { try { ioReactor.execute(ioEventDispatch); } catch (InterruptedIOException ex) { System.err.println("Interrupted"); } catch (IOException e) { System.err.println("I/O error: " + e.getMessage()); } System.out.println("Shutdown"); } }); t.start(); List<SessionRequest> reqs = new ArrayList<SessionRequest>(); // reqs.add(ioReactor.connect( // new InetSocketAddress("www.yahoo.com", 80), // null, // new HttpHost("www.yahoo.com"), // null)); // reqs.add(ioReactor.connect( // new InetSocketAddress("www.google.com", 80), // null, // new HttpHost("www.google.ch"), // null)); // reqs.add(ioReactor.connect( // new InetSocketAddress("www.apache.org", 80), // null, // new HttpHost("www.apache.org"), // null)); reqs.add(ioReactor.connect(new InetSocketAddress("www.wowhead.com", 80), null, new HttpHost("www.wowhead.com"), null)); // Block until all connections signal // completion of the request execution synchronized (requestCount) { while (requestCount.getValue() > 0) { requestCount.wait(); } } System.out.println("Shutting down I/O reactor"); ioReactor.shutdown(); System.out.println("Done"); } static class MyHttpRequestExecutionHandler implements HttpRequestExecutionHandler { private final static String REQUEST_SENT = "request-sent"; private final static String RESPONSE_RECEIVED = "response-received"; private final RequestCount requestCount; public MyHttpRequestExecutionHandler(final RequestCount requestCount) { super(); this.requestCount = requestCount; } public void initalizeContext(final HttpContext context, final Object attachment) { HttpHost targetHost = (HttpHost) attachment; context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, targetHost); } public void finalizeContext(final HttpContext context) { Object flag = context.getAttribute(RESPONSE_RECEIVED); if (flag == null) { // Signal completion of the request execution synchronized (this.requestCount) { this.requestCount.decrement(); this.requestCount.notifyAll(); } } } public HttpRequest submitRequest(final HttpContext context) { HttpHost targetHost = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST); Object flag = context.getAttribute(REQUEST_SENT); if (flag == null) { // Stick some object into the context context.setAttribute(REQUEST_SENT, Boolean.TRUE); System.out.println("--------------"); System.out.println("Sending request to " + targetHost); System.out.println("--------------"); // new URL("http://www.wowhead.com/?items&filter=qu=2:3;minle=" + minlevel + ";maxle=" + maxlevel + ";ub=2;cr=110:18;crs=1:2;crv=0:0"), int minlevel = 0; int maxlevel = 90; return new BasicHttpRequest("GET", "/?items&filter=qu=2:3;minle=" + minlevel + ";maxle=" + maxlevel + ";ub=2;cr=110:18;crs=1:2;crv=0:0"); } else { // No new request to submit return null; } } public void handleResponse(final HttpResponse response, final HttpContext context) { HttpEntity entity = response.getEntity(); try { String content = EntityUtils.toString(entity); System.out.println("--------------"); System.out.println(response.getStatusLine()); System.out.println("--------------"); // TODO parse out the content here System.out.println(content); System.out.println("--------------"); } catch (IOException ex) { System.err.println("I/O error: " + ex.getMessage()); } context.setAttribute(RESPONSE_RECEIVED, Boolean.TRUE); // Signal completion of the request execution synchronized (this.requestCount) { this.requestCount.decrement(); this.requestCount.notifyAll(); } } } static class EventLogger implements EventListener { public void connectionOpen(final NHttpConnection conn) { System.out.println("Connection open: " + conn); } public void connectionTimeout(final NHttpConnection conn) { System.out.println("Connection timed out: " + conn); } public void connectionClosed(final NHttpConnection conn) { System.out.println("Connection closed: " + conn); } public void fatalIOException(final IOException ex, final NHttpConnection conn) { System.err.println("I/O error: " + ex.getMessage()); } public void fatalProtocolException(final HttpException ex, final NHttpConnection conn) { System.err.println("HTTP error: " + ex.getMessage()); } } static class RequestCount { private int value; public RequestCount(int initialValue) { this.value = initialValue; } public int getValue() { return this.value; } public void decrement() { this.value--; } } }