Some random daemon binding to 3000 because it's the express default drives me nuts. I either do a Unix socket, a pick any random port if it has to bind on a port.
reply> So why doesn't everyone run local services over Unix sockets?
reply> The only problems:
3) 40 years of Windows not supporting UDS.
Yeah, that too. Windows supports them nowadays too, just to be clear. I think we're still bottlenecked, right now, on #1 and #2 in the form of Java 8 refusing to die.
replyYeah, doing the math it's actually only 33 years of not supporting AF_UNIX, but that's not really right either, since those versions of Windows didn't support any sockets. I guess the technically correct answer then is that Windows didn't support UDS for 26 years.
replyWhich is still enough for most portable software to go "eh, localhost is fine*"
* resolving localhost is actually a pretty bad idea (yet very common) and it's way more robust to listen directly on a numeric address.