David Miller wrote: > From: Rick Jones <[EMAIL PROTECTED]> > Date: Tue, 06 Mar 2007 10:54:00 -0800 > >>> So we're not "disallowing" a backlog argument of zero to >>> listen(). We'll accept that just fine, the only thing that >>> happens is that you'll get what you ask for, that being >>> no connections :-) >> I'm not sure where HP-UX inherited the 0 = 1 bit - perhaps from BSD, nor >> am I sure there is official chapter and verse, but: >> >> <excerpt> >> backlog is limited to the range of 0 to SOMAXCONN, which is defined in >> <sys/socket.h>. SOMAXCONN is currently set to 4096. If any other >> value is specified, the system automatically assigns the closest value >> within the range. A backlog of 0 specifies only 1 pending >> connection is allowed at any given time. >> </excerpt> >> >> I don't have a Solaris, BSD or AIX manpage for listen handy to check >> them but would not be surprised to see they are similar. > > Ok, that seals the deal for me, I'll revert the change :)
Ahh, crap. Even Posix wiesel-words around this issue: > A backlog argument of 0 may allow the socket to accept connections, in which > case > the length of the listen queue may be set to an implementation-defined > minimum value. (from http://www.opengroup.org/onlinepubs/009695399/functions/listen.html) No, to go and fix the SCTP spec.... -vlad - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
