gurneyalex/pg_activity — pull request #1 by krzyzakp (2013-08-20 14:15:57+00:00)
Title: Fixed exceptions, when using UNIX Socket

Password must be casted to type string-None is not allowed there. Host also must be string, therefore to use UNIX Socket it shouldn't be passed as a param.
Tested on postgresql 9.2 and Debian Squeeze.