持久性TCP客户端响应读取问题

时间:2019-03-13 11:56:57

标签: android tcp tcpclient

我正在尝试使tcp上的连接保持活动状态,为此,我正在使用套接字的静态实例。我的服务器保持其连接处于活动状态,并将响应写入套接字。这是客户端代码。但是我陷入了读取输入流的循环中。有人可以建议更好的方法吗? 我正在发布我正在使用的代码。

public class ConnectionManager {

    private String m_Response = "";
    byte[] m_RequestData;
    boolean m_Read_Response_Completed = false;
    Thread l_WorkerThread;
    ConnectionListener m_ConnectionListener;
    boolean m_IsFetchCompleted;
    Context mContext;
    private static boolean isNeedToStop = false;

    public ConnectionManager(Context context, ConnectionListener f_LoginListener) {
        mContext = context;
        m_ConnectionListener = f_LoginListener;
        m_IsFetchCompleted = false;
    }
    public String request(byte[] f_RequestData) throws Exception {
        m_RequestData = f_RequestData;

        l_WorkerThread = new Thread(new Runnable() {

            @Override
            public void run() {


                try {
                    if (NetworkUtils.m_socket == null || !NetworkUtils.m_socket.isBound() || NetworkUtils.m_socket.isClosed() /*|| Constants.IS_SERVER_CONFIG_CHANGED*/) {
                        NetworkUtils.m_socket = new Socket("IP", PORT);
                        NetworkUtils.m_socket.setKeepAlive(true);
                    }

                    if (m_RequestData == null) {
                        m_Read_Response_Completed = true;
                        if (!NetworkUtils.m_socket.isClosed()) {
                            m_ConnectionListener.notifyReadCompleted("Connected");

//                          return;
                        } else {
                            m_ConnectionListener.notifyReadCompleted("Disconnected");

//                          return;
                        }
                    } else {
                        Log.i(encodePackets(new String(m_RequestData)), "---->Request");
                    }
                    int bytesRead = 0;
                    ArrayList<String> str = new ArrayList<String>();

                    while (!isNeedToStop) {
                        if (NetworkUtils.m_socket != null) {
                            /*if (NetworkUtils.m_socket.getInputStream().available() != 0) {*/

                                ByteArrayOutputStream byteArrayOutputStream =
                                        new ByteArrayOutputStream(1048576);
                                byte[] buffer = new byte[1048576];
                                while ((bytesRead = NetworkUtils.m_socket.getInputStream().read(buffer)) != -1) {
                                    byteArrayOutputStream.write(buffer, 0, bytesRead);
                                    m_Response = byteArrayOutputStream.toString();//JSON ARRAY
                                    m_ConnectionListener.notifyReadCompleted(m_Response);

                                    try {
                                        Thread.sleep(500);
                                    } catch (Exception e) {
                                        Log.i(e);
                                    }
                                }
                            }
                        }
                    //}

                } catch (
                        UnknownHostException e)

                {
                    Log.i(e.getMessage(), "");
                    m_ConnectionListener.notifySocketError(true);
                    NetworkUtils.m_socket = null;
                } catch (
                        SocketTimeoutException e)

                {

                    Log.i(e.getMessage(), "");
                    m_ConnectionListener.notifySocketError(false);
                    NetworkUtils.m_socket = null;
                    e.printStackTrace();
                } catch (
                        SocketException e)

                {

                    Log.i(e.getMessage(), "");
                    m_ConnectionListener.notifySocketError(true);
                    NetworkUtils.m_socket = null;
                    e.printStackTrace();
                } catch (
                        IOException e)

                {

                    Log.i(e.getMessage(), "");
                    m_ConnectionListener.notifySocketError(true);
                    NetworkUtils.m_socket = null;
                    e.printStackTrace();
                }
            }
        });
        l_WorkerThread.start();

        return m_Response;
    }
}

public interface ConnectionListener {

    void notifyReadCompleted(String f_Response);
    void notifySocketError(boolean isServerDown);
    void onReceivePacket(int total, int current);
}

public class NetworkUtils {
    public static Socket m_Socket;

    public static void resetSocket() {
        if (m_Socket != null) {
            try {
                m_Socket.close();
                m_Socket = null;
            } catch (IOException e) {
                Logger.log(e);
                e.printStackTrace();
            }
        }
    }
}

任何帮助将不胜感激。

0 个答案:

没有答案