diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/Site.java b/webmagic-core/src/main/java/us/codecraft/webmagic/Site.java
index b5f8865..33e9b8f 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/Site.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/Site.java
@@ -1,5 +1,6 @@
 package us.codecraft.webmagic;
 
+import org.apache.http.HttpHost;
 import us.codecraft.webmagic.utils.UrlUtils;
 
 import java.util.*;
@@ -40,6 +41,8 @@ public class Site {
 
     private Map<String, String> headers = new HashMap<String, String>();
 
+    private HttpHost httpProxy;
+
     public static interface HeaderConst {
 
         public static final String REFERER = "Referer";
@@ -295,6 +298,20 @@ public class Site {
         return this;
     }
 
+    public HttpHost getHttpProxy() {
+        return httpProxy;
+    }
+
+    /**
+     * set up httpProxy for this site
+     * @param httpProxy
+     * @return
+     */
+    public Site setHttpProxy(HttpHost httpProxy) {
+        this.httpProxy = httpProxy;
+        return this;
+    }
+
     public Task toTask() {
         return new Task() {
             @Override
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientDownloader.java b/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientDownloader.java
index ce4f8cb..2da585f 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientDownloader.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientDownloader.java
@@ -1,9 +1,11 @@
 package us.codecraft.webmagic.downloader;
 
+import com.google.common.collect.Sets;
 import org.apache.http.HttpResponse;
 import org.apache.http.annotation.ThreadSafe;
+import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.CloseableHttpResponse;
-import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.RequestBuilder;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.util.EntityUtils;
 import org.apache.log4j.Logger;
@@ -16,7 +18,7 @@ import us.codecraft.webmagic.selector.PlainText;
 import us.codecraft.webmagic.utils.UrlUtils;
 
 import java.io.IOException;
-import java.util.HashSet;
+import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
 
@@ -32,7 +34,7 @@ public class HttpClientDownloader implements Downloader {
 
     private Logger logger = Logger.getLogger(getClass());
 
-    private volatile CloseableHttpClient httpClient;
+    private final Map<String, CloseableHttpClient> httpClients = new HashMap<String, CloseableHttpClient>();
 
     private int poolSize = 1;
 
@@ -59,10 +61,16 @@ public class HttpClientDownloader implements Downloader {
     }
 
     private CloseableHttpClient getHttpClient(Site site) {
+        if (site == null) {
+            return new HttpClientPool(poolSize).getClient(null);
+        }
+        String domain = site.getDomain();
+        CloseableHttpClient httpClient = httpClients.get(domain);
         if (httpClient == null) {
             synchronized (this) {
                 if (httpClient == null) {
                     httpClient = new HttpClientPool(poolSize).getClient(site);
+                    httpClients.put(domain, httpClient);
                 }
             }
         }
@@ -83,19 +91,25 @@ public class HttpClientDownloader implements Downloader {
             charset = site.getCharset();
             headers = site.getHeaders();
         } else {
-            acceptStatCode = new HashSet<Integer>();
-            acceptStatCode.add(200);
+            acceptStatCode = Sets.newHashSet(200);
         }
         logger.info("downloading page " + request.getUrl());
-        HttpGet httpGet = new HttpGet(request.getUrl());
+        RequestBuilder requestBuilder = RequestBuilder.get().setUri(request.getUrl());
         if (headers != null) {
             for (Map.Entry<String, String> headerEntry : headers.entrySet()) {
-                httpGet.addHeader(headerEntry.getKey(), headerEntry.getValue());
+                requestBuilder.addHeader(headerEntry.getKey(), headerEntry.getValue());
             }
         }
+        RequestConfig.Builder requestConfigBuilder = RequestConfig.custom()
+                .setConnectionRequestTimeout(site.getTimeOut())
+                .setConnectTimeout(site.getTimeOut());
+        if (site.getHttpProxy()!=null){
+            requestConfigBuilder.setProxy(site.getHttpProxy());
+        }
+        requestBuilder.setConfig(requestConfigBuilder.build());
         CloseableHttpResponse httpResponse = null;
         try {
-            httpResponse = getHttpClient(site).execute(httpGet);
+            httpResponse = getHttpClient(site).execute(requestBuilder.build());
             int statusCode = httpResponse.getStatusLine().getStatusCode();
             if (acceptStatCode.contains(statusCode)) {
                 //charset
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientPool.java b/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientPool.java
index 43ee94d..62d8718 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientPool.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientPool.java
@@ -78,7 +78,9 @@ public class HttpClientPool {
             }
 
         });
-        httpClientBuilder.setRetryHandler(new DefaultHttpRequestRetryHandler(site.getRetryTimes(),true));
+        if (site!=null){
+            httpClientBuilder.setRetryHandler(new DefaultHttpRequestRetryHandler(site.getRetryTimes(),true));
+        }
         return httpClientBuilder.build();
     }
 
diff --git a/webmagic-samples/src/main/java/us/codecraft/webmagic/model/samples/OschinaBlog.java b/webmagic-samples/src/main/java/us/codecraft/webmagic/model/samples/OschinaBlog.java
index a7f51ad..d6b9c9d 100644
--- a/webmagic-samples/src/main/java/us/codecraft/webmagic/model/samples/OschinaBlog.java
+++ b/webmagic-samples/src/main/java/us/codecraft/webmagic/model/samples/OschinaBlog.java
@@ -1,10 +1,12 @@
 package us.codecraft.webmagic.model.samples;
 
+import org.apache.http.HttpHost;
 import us.codecraft.webmagic.Site;
+import us.codecraft.webmagic.Task;
 import us.codecraft.webmagic.model.OOSpider;
+import us.codecraft.webmagic.model.PageModelPipeline;
 import us.codecraft.webmagic.model.annotation.ExtractBy;
 import us.codecraft.webmagic.model.annotation.TargetUrl;
-import us.codecraft.webmagic.pipeline.JsonFilePageModelPipeline;
 
 import java.util.List;
 
@@ -24,8 +26,13 @@ public class OschinaBlog{
     private List<String> tags;
 
     public static void main(String[] args) {
-        OOSpider.create(Site.me().addStartUrl("http://my.oschina.net/flashsword/blog")
-                ,new JsonFilePageModelPipeline(), OschinaBlog.class).run();
+        OOSpider.create(Site.me().setUserAgent("Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36").addStartUrl("http://my.oschina.net/flashsword/blog").setSleepTime(0).setHttpProxy(new HttpHost("127.0.0.1",8888))
+                ,new PageModelPipeline() {
+            @Override
+            public void process(Object o, Task task) {
+
+            }
+        }, OschinaBlog.class).thread(10).run();
     }
 
     public String getTitle() {