java - 如何让 ServerSocket 接受来自同一 IP 的多个连接？

标签 java serversocket connection

我有一个服务器套接字，它接受连接并将它们传递给工作线程。当连接来自不同的 IP 地址时，此功能会同时工作。在该客户端关闭前一个连接之前，它不会接受来自任何给定计算机(IP 地址)的新连接。

我怎样才能做到这一点？

提前致谢。

编辑:来自同一 IP 客户端的请求将被阻止，直到前一个请求完成。

    private ConcurrentLinkedQueue<WorkerThread> queueList = new ConcurrentLinkedQueue<WorkerThread>();

...

public void ServerSocketLoop()
{
    try
    {
    ServerSocket sk = new ServerSocket(iPort);
    while (!sk.isClosed())
    {
        Logger.Log(this, Logger.CONNECTION_ONLY, "Loop: ");
        int cnt = getQueueList().size();
        Socket clientSocket = sk.accept();
        String clIp = clientSocket.getInetAddress().getHostAddress();
        boolean match=false;
        if(!allowedIps.isEmpty())
        {
            for(String alIp : allowedIps.keySet())
            {
                if(clIp.startsWith(alIp))
                {
                    match=true;
                    break;
                }
            }
        }
        else
            match=true;
        if(match)
        {
            try
            {
                Logger.Log(this, Logger.CONNECTION_ONLY, "Accepting connection from: " + clIp);
                WorkerThread scs = new WorkerThread(clientSocket, this);
                getQueueList().add(scs);
            } catch (Exception e)
            {
                Logger.Log(this, e);
            }
        } else
        {
            Logger.Log(this, Logger.CONNECTION_ONLY, "Refused connection from: " + clIp);
        }
    }
    }
    catch(Exception e)
    {
        Logger.Log(this, e);
    }
}

编辑:更多信息。

工作线程启动后读取(客户端)套接字输入流，使用进程构建器执行命令，并通过套接字读取数据，通过套接字输出流将结果写回，然后关闭套接字。

日志输出:注意20:06:10.305来自192.168.1.32的连接

[2013-09-28 20:04:51.181]    Accepting connection from: /0:0:0:0:0:0:0:1%0:49460
[2013-09-28 20:04:51.497]    Accepted socket
[2013-09-28 20:04:51.498]        In: one
[2013-09-28 20:04:51.499]    Looking for wrkr4237846575505157705.out
[2013-09-28 20:04:51.499]        Start process
[2013-09-28 20:05:07.564]    Accepting connection from: /192.168.1.32:32864
[2013-09-28 20:05:07.880]    Accepted socket
[2013-09-28 20:05:07.881]        In: one
[2013-09-28 20:05:07.881]    Looking for wrkr2936790469462792093.out
[2013-09-28 20:05:07.881]        Start process
[2013-09-28 20:05:24.600]        Finished
[2013-09-28 20:05:24.601]        Out: wrkr4237846575505157705 Sat Sep 28 20:04:51 CDT 2013
[2013-09-28 20:05:24.602]        Out: wrkr4237846575505157705 Sat Sep 28 20:04:54 CDT 2013
[2013-09-28 20:05:24.603]        Out: wrkr4237846575505157705 Sat Sep 28 20:04:57 CDT 2013
[2013-09-28 20:05:24.603]        Out: wrkr4237846575505157705 Sat Sep 28 20:05:00 CDT 2013
[2013-09-28 20:05:24.604]        Out: wrkr4237846575505157705 Sat Sep 28 20:05:03 CDT 2013
[2013-09-28 20:05:24.604]        Out: wrkr4237846575505157705 Sat Sep 28 20:05:06 CDT 2013
[2013-09-28 20:05:24.605]        Out: wrkr4237846575505157705 Sat Sep 28 20:05:09 CDT 2013
[2013-09-28 20:05:24.605]        Out: wrkr4237846575505157705 Sat Sep 28 20:05:12 CDT 2013
[2013-09-28 20:05:24.605]        Out: wrkr4237846575505157705 Sat Sep 28 20:05:15 CDT 2013
[2013-09-28 20:05:24.606]        Out: wrkr4237846575505157705 Sat Sep 28 20:05:18 CDT 2013
[2013-09-28 20:05:24.607]        Out: wrkr4237846575505157705 Sat Sep 28 20:05:21 CDT 2013
[2013-09-28 20:05:24.628]    Accepting connection from: /0:0:0:0:0:0:0:1%0:49464
[2013-09-28 20:05:24.993]    Accepted socket
[2013-09-28 20:05:24.995]        In: two
[2013-09-28 20:05:24.996]    Looking for wrkr1946064549539591675.out
[2013-09-28 20:05:24.996]        Start process
[2013-09-28 20:05:40.984]        Finished
[2013-09-28 20:05:40.985]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:07 CDT 2013
[2013-09-28 20:05:40.985]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:10 CDT 2013
[2013-09-28 20:05:40.986]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:13 CDT 2013
[2013-09-28 20:05:40.986]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:16 CDT 2013
[2013-09-28 20:05:40.987]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:19 CDT 2013
[2013-09-28 20:05:40.987]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:22 CDT 2013
[2013-09-28 20:05:40.988]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:25 CDT 2013
[2013-09-28 20:05:40.988]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:28 CDT 2013
[2013-09-28 20:05:40.988]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:31 CDT 2013
[2013-09-28 20:05:40.989]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:34 CDT 2013
[2013-09-28 20:05:40.989]        Out: wrkr2936790469462792093 Sat Sep 28 20:05:37 CDT 2013
[2013-09-28 20:05:58.109]        Finished
[2013-09-28 20:05:58.110]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:25 CDT 2013
[2013-09-28 20:05:58.110]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:28 CDT 2013
[2013-09-28 20:05:58.110]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:31 CDT 2013
[2013-09-28 20:05:58.111]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:34 CDT 2013
[2013-09-28 20:05:58.111]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:37 CDT 2013
[2013-09-28 20:05:58.111]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:40 CDT 2013
[2013-09-28 20:05:58.112]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:43 CDT 2013
[2013-09-28 20:05:58.112]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:46 CDT 2013
[2013-09-28 20:05:58.112]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:49 CDT 2013
[2013-09-28 20:05:58.112]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:52 CDT 2013
[2013-09-28 20:05:58.113]        Out: wrkr1946064549539591675 Sat Sep 28 20:05:55 CDT 2013
[2013-09-28 20:05:58.160]    Accepting connection from: /0:0:0:0:0:0:0:1%0:49470
[2013-09-28 20:05:58.477]    Accepted socket
[2013-09-28 20:05:58.479]        In: three
[2013-09-28 20:05:58.480]    Looking for wrkr7376110979239359337.out
[2013-09-28 20:05:58.480]        Start process
[2013-09-28 20:06:10.305]    Accepting connection from: /192.168.1.32:32870
[2013-09-28 20:06:10.469]    Accepted socket
[2013-09-28 20:06:10.470]        In: laurie
[2013-09-28 20:06:10.470]    Looking for wrkr1695309805515169887.out
[2013-09-28 20:06:10.470]        Start process
[2013-09-28 20:06:31.591]        Finished
[2013-09-28 20:06:31.592]        Out: wrkr7376110979239359337 Sat Sep 28 20:05:58 CDT 2013
[2013-09-28 20:06:31.592]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:01 CDT 2013
[2013-09-28 20:06:31.593]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:04 CDT 2013
[2013-09-28 20:06:31.593]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:07 CDT 2013
[2013-09-28 20:06:31.593]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:10 CDT 2013
[2013-09-28 20:06:31.594]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:13 CDT 2013
[2013-09-28 20:06:31.594]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:16 CDT 2013
[2013-09-28 20:06:31.594]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:19 CDT 2013
[2013-09-28 20:06:31.595]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:22 CDT 2013
[2013-09-28 20:06:31.595]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:25 CDT 2013
[2013-09-28 20:06:31.595]        Out: wrkr7376110979239359337 Sat Sep 28 20:06:28 CDT 2013
[2013-09-28 20:06:31.642]    Accepting connection from: /0:0:0:0:0:0:0:1%0:49472
[2013-09-28 20:06:31.958]    Accepted socket
[2013-09-28 20:06:31.959]        In: four
[2013-09-28 20:06:31.960]    Looking for wrkr1689149287441159516.out
[2013-09-28 20:06:31.960]        Start process
[2013-09-28 20:06:43.581]        Finished
[2013-09-28 20:06:43.582]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:10 CDT 2013
[2013-09-28 20:06:43.582]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:13 CDT 2013
[2013-09-28 20:06:43.583]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:16 CDT 2013
[2013-09-28 20:06:43.583]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:19 CDT 2013
[2013-09-28 20:06:43.583]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:22 CDT 2013
[2013-09-28 20:06:43.584]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:25 CDT 2013
[2013-09-28 20:06:43.584]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:28 CDT 2013
[2013-09-28 20:06:43.584]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:31 CDT 2013
[2013-09-28 20:06:43.584]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:34 CDT 2013
[2013-09-28 20:06:43.585]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:37 CDT 2013
[2013-09-28 20:06:43.585]        Out: wrkr1695309805515169887 Sat Sep 28 20:06:40 CDT 2013
[2013-09-28 20:07:05.061]        Finished
[2013-09-28 20:07:05.062]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:31 CDT 2013
[2013-09-28 20:07:05.062]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:34 CDT 2013
[2013-09-28 20:07:05.062]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:37 CDT 2013
[2013-09-28 20:07:05.063]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:40 CDT 2013
[2013-09-28 20:07:05.063]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:44 CDT 2013
[2013-09-28 20:07:05.063]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:47 CDT 2013
[2013-09-28 20:07:05.064]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:50 CDT 2013
[2013-09-28 20:07:05.064]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:53 CDT 2013
[2013-09-28 20:07:05.064]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:56 CDT 2013
[2013-09-28 20:07:05.065]        Out: wrkr1689149287441159516 Sat Sep 28 20:06:59 CDT 2013
[2013-09-28 20:07:05.065]        Out: wrkr1689149287441159516 Sat Sep 28 20:07:02 CDT 2013
[2013-09-28 20:07:05.093]    Accepting connection from: /0:0:0:0:0:0:0:1%0:49524
[2013-09-28 20:07:05.409]    Accepted socket
[2013-09-28 20:07:05.411]        In: five
[2013-09-28 20:07:05.411]    Looking for wrkr8081329232671108201.out
[2013-09-28 20:07:05.411]        Start process
[2013-09-28 20:07:38.515]        Finished
[2013-09-28 20:07:38.516]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:05 CDT 2013
[2013-09-28 20:07:38.516]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:08 CDT 2013
[2013-09-28 20:07:38.517]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:11 CDT 2013
[2013-09-28 20:07:38.517]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:14 CDT 2013
[2013-09-28 20:07:38.517]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:17 CDT 2013
[2013-09-28 20:07:38.518]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:20 CDT 2013
[2013-09-28 20:07:38.518]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:23 CDT 2013
[2013-09-28 20:07:38.518]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:26 CDT 2013
[2013-09-28 20:07:38.519]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:29 CDT 2013
[2013-09-28 20:07:38.519]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:32 CDT 2013
[2013-09-28 20:07:38.519]        Out: wrkr8081329232671108201 Sat Sep 28 20:07:35 CDT 2013

最佳答案

允许 ServerSocket 接受来自同一 IP 的多个请求并没有什么神奇之处。事实上，它会自然发生......而且看起来你的代码会做到这一点。

但是，您的代码(如图所示)正在创建线程，但没有启动它们。除非您启动一个线程，否则它的 run() 方法将不会运行。

(我假设 WorkerThread 是 Thread 的子类。)

换句话说，您已经接受请求连接，但它是否正在读取和处理请求值得怀疑。

<小时/>

无论如何，通过扩展 Thread 类来编写工作逻辑是一个糟糕的想法。最好实现 Runnable 接口(interface)，并将其作为构造函数参数传递给普通的 Thread 对象。或者更好的方法仍然是使用带有有限线程池的 ThreadPoolExecutor 之类的东西来管理线程的创建和请求的排队。

关于java - 如何让 ServerSocket 接受来自同一 IP 的多个连接？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19073534/

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