Passenger on Mac

[Yi Wen]

I installed nginx and passenger on my mac dev machine, I have 4 apps
running and they talk to each other. My problem is: it seems if one
app is not being used for a while, it died. resulting a "broken pipe"
error when another app tries to talk to it like this:

*** Exception Errno::EPIPE in Passenger RequestHandler (Broken pipe)
(process 15879):
from /usr/local/lib/ruby/gems/1.8/gems/passenger-2.2.3/lib/
phusion_passenger/rack/request_handler.rb:108:in `write'
from /usr/local/lib/ruby/gems/1.8/gems/passenger-2.2.3/lib/
phusion_passenger/rack/request_handler.rb:108:in `process_request'


Any clue on why?

I tried to search the google and find no luck, thanks