android https 证书校验问题

在做C/S https请求时，服务端加入了证书校验。我在发送请求时已经做了信任所有证书的动作，但是获取返回数据，进行数据流操作时，报javax.net.ssl.SSLException: Connection closed by peer异常，求大神指点！！！
代码如下：

    public static Response connect(Request request)
    {
        Response response = new Response();
        response.setCorrespondingRequest(request);
        HttpURLConnection httpConn = null;

        System.setProperty("http.keepAlive", "false");

        try
        {
            SSLContext sc = SSLContext.getInstance("SSL");

            sc.init(null, new TrustManager[] { new MyTrustManager() }, null);
            HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
            HttpsURLConnection.setDefaultHostnameVerifier(new MyHostnameVerifier());

            URL url = new URL(request.getUrl());

            if (!url.getProtocol().toLowerCase().equals("https"))
            {
                httpConn = (HttpURLConnection) url.openConnection();
            }
            else
            {
                httpConn = getHttpsConn(url);
            }

            httpConn.setDoInput(true);
            httpConn.setDoOutput(true);
            httpConn.setUseCaches(false);

            // set request method.
            setRequestMethod(request, httpConn);

            // set request property.
            setRequestProperty(request, httpConn);

            httpConn.setConnectTimeout(CONNECT_TIMEOUT);
            httpConn.setReadTimeout(READ_TIMEOUT);

            if (request.getBody() != null)
            {
                // set request content.
                Logger.i(TAG, "request body : \n" + request.getBody());
                byte[] data = request.getBody().getBytes("UTF-8");

                // write data.
                OutputStream os = httpConn.getOutputStream();
                if (request.isGZip())
                {
                    GZIPOutputStream gzos = new GZIPOutputStream(os);
                    gzos.write(data);
                    gzos.flush();
                    gzos.close();
                }
                else
                {
                    os.write(data);
                    os.flush();
                }
                os.close();
            }

            // get response code.
            int responseCode = initResponseCode(response, httpConn);
            // connect OK(200) or Created(201)

        }
        catch 省略

    }

红色OutputStream os = httpConn.getOutputStream();报异常。 --------------------编程问答-------------------- 这个一般是服务器提前关闭或者某个IO流未关闭造成的。 --------------------编程问答-------------------- httpConn.connect();加上试试， --------------------编程问答--------------------

引用 2 楼 birdsaction 的回复:

httpConn.connect();加上试试，

这段代码有，我是放在线程池里做的。只是在上面的代码里没体现出来。 --------------------编程问答--------------------

引用 1 楼 birdsaction 的回复:

这个一般是服务器提前关闭或者某个IO流未关闭造成的。

可是下面有 os.close();呀 --------------------编程问答-------------------- OutputStream os = httpConn.getOutputStream();
这个代码前已经做了httpConn.connect(); ? 咋没看到。

补充：移动开发 ,  Android