Phantasia4（Java客户端和C服务器）套接字超时

Question

There's an old codebase that uses a server in C and client in Java. The source is here: mudbytes.net/file-890

It used to work just fine years ago, but the socket is now timing out when the two try to communicate. Is there some sort of new Java policy that silently blocks communication if there is no cert or the sort?

[EDIT] Works on http://www.phantasia4.org which is a Slackware machine. But not CentOS.

Answer 1

Is there some sort of new Java policy that silently blocks communication if there is no cert or the sort?

No.

There might be some such restriction on the server containers / machines / networks, but you've given us insufficient information to determine if this is a realistic possibility.

Answer 2

Hmm, networks tend to change over the years. There could be numerous reasons - from target changing the IP address or just falling off the face of the Internet to ISP blocking given port to aliens redirecting your traffic to a black /dev/null . It's all in the details you didn't give.