Gradle: MessageIOException: 無法將訊息 [EndOfStream] 寫入 127.0.0.1 (Firewall)?

2022-09-03 15:11:45

我写了一个简单的测试项目,它打开端口一段时间并退出:9123

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.charset.Charset;
import java.util.Date;

import org.apache.mina.core.service.IoAcceptor;
import org.apache.mina.core.service.IoHandler;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.textline.TextLineCodecFactory;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
public class TimeServer
{
    private static final int PORT = 9123;
    public static void main( String[] args ) throws IOException
    {
        IoAcceptor acceptor = new NioSocketAcceptor();
        acceptor.getFilterChain().addLast( "logger", new LoggingFilter() );
        acceptor.getFilterChain().addLast( "codec", new ProtocolCodecFilter( new TextLineCodecFactory( Charset.forName( "UTF-8" ))));
        acceptor.setHandler( new TimeServerHandler() );
        acceptor.getSessionConfig().setReadBufferSize( 2048 );
        acceptor.getSessionConfig().setIdleTime( IdleStatus.BOTH_IDLE, 10 );
        acceptor.bind( new InetSocketAddress(PORT) );
    }

    private static class TimeServerHandler extends IoHandlerAdapter {
        @Override
        public void exceptionCaught(IoSession session, Throwable cause ) throws Exception
        {
            cause.printStackTrace();
        }
        @Override
        public void messageReceived( IoSession session, Object message ) throws Exception
        {
            String str = message.toString();
            if( str.trim().equalsIgnoreCase("quit") ) {
                session.close();
                return;
            }
            Date date = new Date();
            session.write( date.toString() );
            System.out.println("Message written...");
        }
        @Override
        public void sessionIdle( IoSession session, IdleStatus status ) throws Exception
        {
            System.out.println( "IDLE " + session.getIdleCount( status ));
        }
    }
}

...

import java.io.IOException;

public class TimeServerTest {


   @Test
   public void runningTimeServerForTime() throws IOException, InterruptedException {

      int period = 15000;

      System.out.println("Running time server for " + period + "ms");

      TimeServer.main(new String[] {});

      Thread.sleep(period);

      System.out.println("Done, exiting");

      System.exit(0);

   }
}

此测试在 IntelliJ 下和 Windows 防火墙关闭时运行 Ok。

当 Windows 防火墙处于打开状态时,它会失败并出现异常

>gradle test
:compileJava
Note: PATH\TimeServer.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
:processResources UP-TO-DATE
:classes
:compileTestJava
:processTestResources UP-TO-DATE
:testClasses
:test
Unexpected exception thrown.
org.gradle.messaging.remote.internal.MessageIOException: Could not write message [EndOfStream] to '/127.0.0.1:58895'.
        at org.gradle.messaging.remote.internal.inet.SocketConnection.dispatch(SocketConnection.java:111)
        at org.gradle.messaging.remote.internal.hub.MessageHub$ConnectionDispatch.run(MessageHub.java:284)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
        at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: An existing connection was forcibly closed by the remote host
        at sun.nio.ch.SocketDispatcher.write0(Native Method)
        at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)
        at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
        at sun.nio.ch.IOUtil.write(IOUtil.java:51)
        at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
        at org.gradle.messaging.remote.internal.inet.SocketConnection$SocketOutputStream.flush(SocketConnection.java:236)
        at org.gradle.messaging.remote.internal.inet.SocketConnection.dispatch(SocketConnection.java:109)
        ... 6 more

BUILD SUCCESSFUL

发生了什么事情?

为什么引用的端口与打开的端口有很大不同?588959123

如何在没有禁用防火墙的情况下运行此测试?

要将哪个程序添加到此测试的Windows防火墙白名单中运行正常?


答案 1

它可能与 gradle 处理呼叫的方式有关,请参阅 GRADLE-2759System.exit()

根据经验,在测试中进行调用不是一个好主意,因为它可能会弄乱测试框架(如果所有内容都是从同一个JVM启动的呢?你会毫不犹豫地关闭它)。您应该添加一种正常关闭服务器的方法。System.exit()

请注意,网络错误似乎与您的网络代码或服务器没有任何关系:您可以从堆栈跟踪()中的软件包名称中看到它来自Gradle。这就是为什么端口与您指定的端口不同且无关的原因。org.gradle.messaging.remote.internal

不知道为什么这会在Windows防火墙关闭的情况下通过。


答案 2

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