Java: Reasonable timeout period for URLConnection

By default the timeout for URLConnection is 0 which is unlimited. What is a reasonable value for XXXXX?

U开发者_C百科RL url = ...
URLConnection uCon = url.openConnection();
uCon.setConnectTimeout(XXXXXX);

---

It entirely depends on your business logic. How long do you want your program to wait before it decides that it will just give up, rather than wait?

("Maybe if I just wait a little longer, then it'll connect!")

---

Anything is reasonable. Depending on the latency, on the target page. etc. Let's say 30 seconds.