如何为 Java 套接字指定端口范围? [英] How do you specify a port range for Java sockets?

问题描述

在 Java 中，您可以将数字零作为 Socket 或 DatagramSocket 构造函数的单个参数.Java 然后将该 Socket 绑定到一个空闲端口.是否可以将端口查找限制在特定范围内?

In Java you can give the number zero as a single parameter for the Socket or DatagramSocket constructor. Java binds that Socket to a free port then. Is it possible to limit the port lookup to a specific range?

推荐答案

Hrm，看完文档后，我认为你不能.您可以绑定到任何端口，如果不可接受则重新绑定，或者重复绑定到您范围内的端口直到成功.第二种方法将是最有效"的.

Hrm, after reading the docs, I don't think you can. You can either bind to any port, then rebind if it is not acceptable, or repeatedly bind to a port in your range until you succeed. The second method is going to be most "efficient".

我对这个答案感到不安，因为它......不优雅，但我真的找不到其他任何东西:/

I am uneasy about this answer, because it is... inelegant, yet I really can't find anything else either :/

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