服务器启动socket服务报错 java.net.BindException:Cannot assign requested address
错误信息:

at

at

at

at

at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:128)
at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:554)
at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1258)
at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:501)
at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:486)
at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:980)
at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:250)
at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:365)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
at java.lang.Thread.run(Thread.java:748)
服务器是阿里云的linux系统,socket是基于netty的socket服务端
socket服务的ip是服务器外网ip,端口是9005
经查看该端口并没有被占用
测试使用内网ip与相同端口启动服务启动成功
经过排查,最终的结果是,这个服务器使用的阿里云专用网络,直接用内网ip启动socket服务, 外部可以使用外网ip直接访问。
最后就是 : 用内网ip与9005端口启动socket服务端, 客户端通过 ws://服务器外网ip:9005 连接即可
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