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我在我的 Android 应用程序中进行了很多 http 调用。http 调用大部分是同步的。每隔一段时间，我就会连续收到许多 403 禁止响应，点击相同的 URL。我在导致 403 的调用之前直接进行了登录调用。登录调用返回 200 ok。403 也更多地出现在较新的 Android 平台上。

我如何创建客户端：

    // Create and initialize HTTP parameters
    HttpParams params = new BasicHttpParams();
    ConnManagerParams.setMaxTotalConnections(params, 200);
    ConnPerRoute cpr = new ConnPerRoute() {
        public int getMaxForRoute(HttpRoute httpRoute) {
            return 50;
        }
    };
    ConnManagerParams.setMaxConnectionsPerRoute(params, cpr);
    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);

    // Create and initialize scheme registry 
    SchemeRegistry schemeRegistry = new SchemeRegistry();
    schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));

    // Create an HttpClient with the ThreadSafeClientConnManager.
    ClientConnectionManager cm = new ThreadSafeClientConnManager(params, schemeRegistry);
    _client = new DefaultHttpClient(cm, params);

http调用：

CookieStore cookie_store = HttpSupport.getCookieStoreInstance();   
HttpContext http_context = HttpSupport.getHttpContextInstance(); 
HttpGet get = new HttpGet(StaticFields.DEVICES_RESOURCE);
http_context.setAttribute(ClientContext.COOKIE_STORE, cookie_store);
response = client.execute(get, http_context);
status_code = response.getStatusLine().getStatusCode();

我正在使用我的类 HttpSupport 中包含的静态 CookieStore 和 HttpContext。

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