为什么有在异常差异在Windows平台上

Z时代
2024-01-10
分类：问答

在Windows平台上的套接字连接，运行此代码：为什么有在异常差异在Windows平台上

代码：

Socket socket = new Socket(); 
    try { 
     socket.connect(new InetSocketAddress("127.0.0.1", 8080), 500); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    socket = new Socket(); 
    socket.connect(new InetSocketAddress("127.0.0.1", 8080), 1100);

127.0.0.1:8080是无法访问的，但我得到了不同的例外：

java.net.SocketTimeoutException: connect timed out 
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) 
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) 
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) 
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) 
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) 
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) 
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) 
at java.net.Socket.connect(Socket.java:589) 
at com.hash.test.TestRxJava.main(TestRxJava.java:14) 
Exception in thread "main" java.net.ConnectException: Connection refused: connect 
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) 
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) 
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) 
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) 
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) 
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) 
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) 
at java.net.Socket.connect(Socket.java:589) 
at com.hash.test.TestRxJava.main(TestRxJava.java:19)

正如你所看到的，一个是SocketTimeoutException，另一个是ConnectException;

我很困惑，为什么异常是不同的，这个异常导致我正在使用这个框架的一些问题（春天丝带，相关的问题是：ribbon issue）

希望任何人都可以解释：

为什么例外是不同

我什么时候会得到“SocketTimeoutException：合作无限超时“，我什么时候能得到另一个？

韩国社交协会很多

@Jonathan罗塞恩

我reverve的代码，并得到了相同的：

Socket socket = new Socket(); 
    try { 
     socket.connect(new InetSocketAddress("127.0.0.1", 8080), 1100); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    socket = new Socket(); 
    socket.connect(new InetSocketAddress("127.0.0.1", 8080), 500);

结果：

java.net.ConnectException: Connection refused: connect 
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) 
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) 
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) 
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) 
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) 
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) 
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) 
at java.net.Socket.connect(Socket.java:589) 
at com.transsnet.afbet.factsCenter.sdk.SDKTest.main(SDKTest.java:726) 
Exception in thread "main" java.net.SocketTimeoutException: connect timed out 
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) 
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) 
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) 
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) 
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) 
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) 
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) 
at java.net.Socket.connect(Socket.java:589) 
at com.transsnet.afbet.factsCenter.sdk.SDKTest.main(SDKTest.java:731)