Java RMI 连接使用什么端口?
我可以知道 Java RMI 连接使用哪个端口吗?
May I know what port is used by Java RMI connection?
如果我想使用 RMI 连接将 Java 客户端应用程序连接到 Java 服务器应用程序，我需要在服务器计算机上打开什么端口，以便客户端应用程序可以连接到它?
If I want to connect a Java client application to a Java server application using RMI connection, what port I need to open at the server machine so that the client application can connect to it?
我想在服务器机器上设置防火墙，但不知道应该打开哪个端口.
I want to set up a firewall in the server machine but I don't know which port I should open.
推荐答案
RMI 通常不会在防火墙上工作，因为它使用不可预测的端口(它从 1099 开始，然后使用随机端口运行).
RMI generally won't work over a firewall, since it uses unpredictable ports (it starts off on 1099, and then runs off with a random port after that).
在这些情况下，您通常需要借助 HTTP 上的隧道 RMI，这已经很好地描述了 这里.
In these situations, you generally need to resort to tunnelling RMI over HTTP, which is described well here.
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