is it a socket or is it not?

[Root Boy Jim]

? What's a good method of determining whether a file descriptor
? is a socket or not?  The fstat(2) call does not work well on sockets
? (and it even says so in the man page :-)

Do a getsockopt on it. If you get back ENOTSOCK, it ain't.

? Curtis C. Generous
? DTIC Special Projects Office (DTIC-SPO)
? ARPA: generous at daitc.mil
? UUCP: {uunet,vrdxhq,lll-tis}!daitc!generous

	Root Boy Jim
	Have GNU, Will Travel.