Proxying with puma seems to be unreliable even with non-chunked encoding about rack-streaming-proxy

[whitehat101]

I was just curious, so I wrote a test for your test.

# puma_unreliable_proxying_test.rb
cnt = 0
1000.times do
  str = `curl http://localhost:9292 --silent`
  cnt += 1 if str == "Hello!\n"
end

puts cnt

When I commented the puma require and WEBrick was used, 1000/1000 requests were proxied each time.

When using puma, between 970 and 980 requests would be proxied, and the remainder returned an empty string.

I did two 10k runs. They proxied 9741 and 9734 requests.

puma version 2.11.3
rack-streaming-proxy 2.0.1