[Zope] connection string to postgresql *socket*

[Reinoud van Leeuwen]

Hi,

Since my Postgresql and Zope run on the same box, I would rather like to 
connect Zope to a postgresql socket than to an open port.

I know the connection string to connect to a port is of the form 

"database@host:port user password"

but I cannot find any documentation on the connection string for a socket..

(Zope 2.3.3 on FreeBSD 4.2 with Postgresql 7.1.2 and ZPyGreSQLDA-0-0-3 )

TIA,
Reinoud