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组播通信出现 SocketException 异常
2019-01-24 15:00
组播通信出现`Can't assign requested address`的`SocketException`异常 报错信息如下： ``` java.net.SocketException: Can't assign requested address at java.net.PlainDatagramSocketImpl.join(Native Method) at java.net.AbstractPlainDatagramSocketImpl.join(AbstractPlainDatagramSocketImpl.java:179) at java.net.MulticastSocket.joinGroup(MulticastSocket.java:323) at net.yuxianghe.Listener.main(Listener.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) Process finished with exit code 0 ``` 解决方案： 启动的时候VM options加入： `-Djava.net.preferIPv4Stack=true` 或者去配置一个ipv6的组播地址. 这样问题就解决了。
类型：工作
标签：socket,组播,java
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