Date: Mon, 19 Feb 2007 14:08:16 -0800 From: Pete Rowley <prowley@xxxxxxxxxx>
This is a feature that exists in OpenLDAP (but has no RFC that I am aware of). Heimdal uses this feature exclusively for its directory interactions (making it incompatible with other LDAP directories), and Samba testing is often performed over unix domain sockets (a convenience for them). There are advantages: no TCP overhead for local connections
This turns out to be pretty significant too - using TCP connections to localhost, a connection soak test will use up all available port numbers in a matter of seconds, after which all connection attempts fail. (Because there is a mandatory 2MSL timeout before a closed port may be made available for reuse.) Using ldapi we can process thousands of connections per second indefinitely. (Perhaps someone ought to suggest to the kernel folks that a 2MSL timeout on loopback sockets is unnecessary, since presumably the TCP close handshake can't get misrouted/lost there. ;)
-- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc Chief Architect, OpenLDAP http://www.openldap.org/project/ -- Fedora-directory-devel mailing list Fedora-directory-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-directory-devel
