[Python-Dev] Asyncore .set_reuse_addr() on Windows

[Jeff Epler]

Do any systems *but* win32 have SO_EXLUSIVEADDRUSE ?  (and if they do,
is it better than SO_REUSEADDR for the same reasons it is on win32?)

.. so why not write
    if hasattr(socket, 'SO_EXCLUSIVEADDRUSE'):
        reuse_constant = socket.SO_EXCLUSIVEADDRUSE
    else:
        reuse_constant = socket.SO_REUSEADDR

SO_EXCLUSIVEADDRUSE sounds like the exact opposite of SO_REUSEADDR,
according to a page I found when trying to find out whether any other
platform has SO_EXCLUSEIVEADDRUSE: