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0作为Socket或DatagramSocket构造函数的单个参数。然后，Java将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，在阅读完文档之后，我不认为您可以。您可以绑定到任何端口，然后重新绑定（如果不可接受），或重复绑定到您的范围中的端口，直到成功为止。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，因为它不太优雅，但我真的找不到任何东西否则：/

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

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