HttpClientWrapper.java

package com.candc.service;

import android.net.Proxy;
import org.apache.http.HttpHost;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpRequestRetryHandler;
import org.apache.http.client.params.ClientPNames;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.conn.params.ConnPerRoute;
import org.apache.http.conn.params.ConnRouteParams;
import org.apache.http.conn.routing.HttpRoute;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.cookie.*;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.impl.cookie.BrowserCompatSpec;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HttpContext;

import java.io.IOException;

public class HttpClientWrapper {
    private static HttpClientWrapper mInstance;

    private DefaultHttpClient mHttpClient;


    public static HttpClientWrapper getInstance() {
        return mInstance;
    }

    private static void createHttpClient() {
        mInstance = new HttpClientWrapper();

        HttpRequestRetryHandler retryHandler = new HttpRequestRetryHandler() {
            @Override
            public boolean retryRequest(IOException e, int executionCount, HttpContext context) {
                return executionCount < 3;
            }

        };

        HttpParams params = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(params, 5000);
        HttpConnectionParams.setSoTimeout(params, 50000);
        HttpConnectionParams.setSocketBufferSize(params, 8192);
        HttpConnectionParams.setTcpNoDelay(params, true);
        HttpConnectionParams.setStaleCheckingEnabled(params, false);

        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
        HttpProtocolParams.setContentCharset(params, "utf-8");
        HttpProtocolParams.setUseExpectContinue(params, false);

        ConnManagerParams.setMaxTotalConnections(params, 6);
        ConnManagerParams.setMaxConnectionsPerRoute(params, new ConnPerRoute() {
            @Override
            public int getMaxForRoute(HttpRoute httpRoute) {
                return 6;
            }
        });

        SchemeRegistry registry = new SchemeRegistry();
        registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
        ThreadSafeClientConnManager connManager = new ThreadSafeClientConnManager(params, registry);
         

        DefaultHttpClient httpclient = new DefaultHttpClient(connManager, params);
        
        
        CookieSpecFactory csf = new CookieSpecFactory() {
            public CookieSpec newInstance(HttpParams params) {

                return	new BrowserCompatSpec() {
            		
                    @Override
                    public void validate(Cookie cookie, CookieOrigin origin)   throws MalformedCookieException {
                    	 
                    	String domain = cookie.getDomain();
                    	String host = origin.getHost();                    	
                    	android.util.Log.d("HttpClientWrapper", "BrowserCompatSpec validate cookie.getDomain: " + domain + " origin.getHost: " + host);
                    	
                    }
                };
            }
        }; 
        httpclient.getCookieSpecs().register("easy", csf);
        httpclient.getParams().setParameter(   ClientPNames.COOKIE_POLICY, "easy");
        
        
        mInstance.mHttpClient = httpclient;
        mInstance.mHttpClient.setHttpRequestRetryHandler(retryHandler);
    }

    private HttpClientWrapper() { }

    public static synchronized DefaultHttpClient getHttpClient() {
        if (mInstance == null || mInstance.mHttpClient == null) {
            createHttpClient();
        }
        return mInstance.mHttpClient;
    }


    @SuppressWarnings("deprecation")
	public static void setUseProxy (boolean useProxy) {
        HttpParams params = getHttpClient().getParams();
        
        if (useProxy) {
            try {
                params.setParameter(ConnRouteParams.DEFAULT_PROXY, new HttpHost(Proxy.getDefaultHost(), Proxy.getDefaultPort()));
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else {
            params.removeParameter(ConnRouteParams.DEFAULT_PROXY);
        }
    }
}