Hi, I know that Unicorn forces TCP disconnection as it's explained at
the top of lib/unicorn/http_response.rb:
# A design decision was made to force the client to not pipeline or
# keepalive requests. HTTP/1.1 pipelining really kills the
# performance due to how it has to be handled and how unclear the
# standard is. To fix this the HttpResponse always gives a
# "Connection: close" header which forces the client to close right
# away. The bonus for this is that it gives a pretty nice speed boost
# to most clients since they can close their connection immediately.
However I want to try TCP permanent connections from the client (or a
proxy) to Unicorn. I've tryed to modify same file as above by changing
at the end:
# Remove "Connection: close":
socket.write("HTTP/1.1 #{status}\r\n" \
"Date: #{Time.now.httpdate}\r\n" \
"Status: #{status}\r\n" \
"#{out.join('')}\r\n")
end
body.each { |chunk| socket.write(chunk) }
# Don't close the socket:
#socket.close # flushes and uncorks the socket immediately
ensure
body.respond_to?(:close) and body.close
But of course this is not enough and it fails. Not sure what exactly
happens, it seems that a Unicorn worker doesn't process requests
anymore until replying the first response.
So I would like to know if it's feasible to make Unicorn work in
persistent mode.
NOTE: I already know that the current design is really good, better
than using persistent connections, but I want to experiment with
persistent connections for other purposes I will explain in a future.
Thanks a lot.
--
Iñaki Baz Castillo
<[email protected]>
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