/*
    * Copyright 2012 The Netty Project
    *
    * The Netty Project licenses this file to you under the Apache License,
    * version 2.0 (the "License"); you may not use this file except in compliance
    * with the License. You may obtain a copy of the License at:
    *
    *   http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  package org.jboss.netty.example.http.snoop;
  
  import java.net.InetSocketAddress;
  import java.net.URI;
  import java.util.concurrent.Executors;
  
  import org.jboss.netty.bootstrap.ClientBootstrap;
  import org.jboss.netty.channel.Channel;
  import org.jboss.netty.channel.ChannelFuture;
  import org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
  import org.jboss.netty.handler.codec.http.CookieEncoder;
  import org.jboss.netty.handler.codec.http.DefaultHttpRequest;
  import org.jboss.netty.handler.codec.http.HttpHeaders;
  import org.jboss.netty.handler.codec.http.HttpMethod;
  import org.jboss.netty.handler.codec.http.HttpRequest;
  import org.jboss.netty.handler.codec.http.HttpVersion;
  
  /**
   * A simple HTTP client that prints out the content of the HTTP response to
   * {@link System#out} to test {@link HttpSnoopServer}.
   */
  public class HttpSnoopClient {
  
      private final URI uri;
  
      public HttpSnoopClient(URI uri) {
          this.uri = uri;
      }
  
      public void run() {
          String scheme = uri.getScheme() == null? "http" : uri.getScheme();
          String host = uri.getHost() == null? "localhost" : uri.getHost();
          int port = uri.getPort();
          if (port == -1) {
              if (scheme.equalsIgnoreCase("http")) {
                  port = 80;
              } else if (scheme.equalsIgnoreCase("https")) {
                  port = 443;
              }
          }
  
          if (!scheme.equalsIgnoreCase("http") && !scheme.equalsIgnoreCase("https")) {
              System.err.println("Only HTTP(S) is supported.");
              return;
          }
  
          boolean ssl = scheme.equalsIgnoreCase("https");
  
          // Configure the client.
          ClientBootstrap bootstrap = new ClientBootstrap(
                  new NioClientSocketChannelFactory(
                          Executors.newCachedThreadPool(),
                          Executors.newCachedThreadPool()));
  
          // Set up the event pipeline factory.
          bootstrap.setPipelineFactory(new HttpSnoopClientPipelineFactory(ssl));
  
          // Start the connection attempt.
          ChannelFuture future = bootstrap.connect(new InetSocketAddress(host, port));
  
          // Wait until the connection attempt succeeds or fails.
          Channel channel = future.awaitUninterruptibly().getChannel();
          if (!future.isSuccess()) {
              future.getCause().printStackTrace();
              bootstrap.releaseExternalResources();
              return;
          }
  
          // Prepare the HTTP request.
          HttpRequest request = new DefaultHttpRequest(
                  HttpVersion.HTTP_1_1, HttpMethod.GET, uri.getRawPath());
          request.setHeader(HttpHeaders.Names.HOST, host);
          request.setHeader(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.CLOSE);
          request.setHeader(HttpHeaders.Names.ACCEPT_ENCODING, HttpHeaders.Values.GZIP);
  
          // Set some example cookies.
          CookieEncoder httpCookieEncoder = new CookieEncoder(false);
          httpCookieEncoder.addCookie("my-cookie", "foo");
          httpCookieEncoder.addCookie("another-cookie", "bar");
          request.setHeader(HttpHeaders.Names.COOKIE, httpCookieEncoder.encode());
  
          // Send the HTTP request.
          channel.write(request);
  
         // Wait for the server to close the connection.
         channel.getCloseFuture().awaitUninterruptibly();
 
         // Shut down executor threads to exit.
         bootstrap.releaseExternalResources();
     }
 
     public static void main(String[] args) throws Exception {
         if (args.length != 1) {
             System.err.println(
                     "Usage: " + HttpSnoopClient.class.getSimpleName() +
                     " <URL>");
             return;
         }
 
         URI uri = new URI(args[0]);
         new HttpSnoopClient(uri).run();
     }
 }