使用Android HttpClient重用SSL连接

Question

我正在我自己实现的java Web代理(将请求转发给实际的Web服务)和Android应用程序之间开发一个安全的Web服务.

使用标准(不安全)http连接这样做非常有效.现在我想在代理和Android客户端之间使用安全(SSL)连接.

只要我为每个请求实例化一个新的HttpClient,这就会起作用,这就是浪费资源非常慢,因为我正在为每个请求进行双向握手.

所以我正在尝试为每个请求重用HttpClient,这会导致以下异常中的安全连接

java.lang.IllegalStateException:连接已打开.在org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:150)在org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)在org.apache.http.impl .client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient .java:487)org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)

当我将我的代理和客户端更改为no-ssl通信时,它可以正常工作.有人知道我做错了什么吗？非常感谢你的帮助!

顺便说一句,除了使用带有加载证书的SSLServerSocket而不是使用ServerSocket之外,服务器代码完全相似.

客户参数设置

// Set basic data
    HttpParams params = new BasicHttpParams();
    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
    HttpProtocolParams.setContentCharset(params, "UTF-8");
    HttpProtocolParams.setUseExpectContinue(params, true);
    HttpProtocolParams.setUserAgent(params, "Android app/1.0.0");

    // Make pool
    ConnPerRoute connPerRoute = new ConnPerRouteBean(12);
    ConnManagerParams.setMaxConnectionsPerRoute(params, connPerRoute);
    ConnManagerParams.setMaxTotalConnections(params, 20);

    // Set timeout
    HttpConnectionParams.setStaleCheckingEnabled(params, false);
    HttpConnectionParams.setConnectionTimeout(params, connectionTimeoutMillis);
    HttpConnectionParams.setSoTimeout(params, socketTimeoutMillis);
    HttpConnectionParams.setSocketBufferSize(params, 8192);

    // Some client params
    HttpClientParams.setRedirecting(params, false);

Http客户端创建

// load truststore certificate
            InputStream clientTruststoreIs = context.getResources().openRawResource(R.raw.server);
            KeyStore trustStore = KeyStore.getInstance("BKS");
            trustStore.load(clientTruststoreIs, "server".toCharArray());

            // initialize trust manager factory with the read truststore
            TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
            trustManagerFactory.init(trustStore);

            // setup client certificate

            // load client certificate
            InputStream keyStoreStream = context.getResources().openRawResource(R.raw.client);
            KeyStore keyStore = KeyStore.getInstance("BKS");
            keyStore.load(keyStoreStream, "client".toCharArray());

            // initialize key manager factory with the read client
            // certificate
            KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
            keyManagerFactory.init(keyStore, "client".toCharArray());

            // initialize SSLSocketFactory to use the certificates
            SSLSocketFactory socketFactory = new SSLSocketFactory(SSLSocketFactory.TLS, keyStore, "client", trustStore, null, null);

            // Register http/s shemas!
            SchemeRegistry schReg = new SchemeRegistry();
            schReg.register(new Scheme("https", socketFactory, port));
            ClientConnectionManager conMgr = new ThreadSafeClientConnManager(params, schReg);

            httpClient = new DefaultHttpClient(conMgr, params);

客户请求执行

HttpResponse response = httpClient.execute(request);
        HttpEntity entity = response.getEntity();
        in = entity.getContent();
        String result = convertStreamToString(in);
        in.close();

Answer 1

您使用的是线程安全的连接管理器吗？如果不是，如果您在多个线程中使用相同的 HttpClient，则可能会出现问题。

本文有详细信息：http://candrews.integralblue.com/2011/09/best-way-to-use-httpclient-in-android/