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| | # Copyright (C) 2015-2016 all contributors <yahns-public@yhbt.net>
# License: GPL-3.0+ (https://www.gnu.org/licenses/gpl-3.0.txt)
# frozen_string_literal: true
require_relative 'server_helper'
begin
require 'kcar'
rescue LoadError
end
require 'digest/md5'
class TestProxyPassNoBuffering < Testcase
ENV["N"].to_i > 1 and parallelize_me!
include ServerHelper
STR4 = 'abcd' * (256 * 1024)
NCHUNK = 50
class ProxiedApp
def call(env)
case env['REQUEST_METHOD']
when 'GET'
case env['PATH_INFO']
when '/giant-body'
h = [ %W(content-type text/pain),
%W(content-length #{NCHUNK * STR4.size}) ]
body = Object.new
def body.each
NCHUNK.times { yield STR4 }
end
[ 200, h, body ]
end
end
end
end
def setup
@srv2 = TCPServer.new(ENV["TEST_HOST"] || "127.0.0.1", 0)
server_helper_setup
skip "kcar missing yahns/proxy_pass" unless defined?(Kcar)
require 'yahns/proxy_pass'
end
def teardown
@srv2.close if defined?(@srv2) && !@srv2.closed?
server_helper_teardown
end
def check_headers(io)
l = io.gets
assert_match %r{\AHTTP/1\.[01] 200\b}, l
begin
l = io.gets
end until l == "\r\n"
end
def test_proxy_pass_no_buffering
err, cfg, host, port = @err, Yahns::Config.new, @srv.addr[3], @srv.addr[1]
host2, port2 = @srv2.addr[3], @srv2.addr[1]
pxp = Yahns::ProxyPass.new("http://#{host2}:#{port2}",
proxy_buffering: false)
pid = mkserver(cfg) do
ObjectSpace.each_object(Yahns::TmpIO) { |io| io.close unless io.closed? }
@srv2.close
cfg.instance_eval do
app(:rack, pxp) { listen "#{host}:#{port}" }
stderr_path err.path
end
end
pid2 = mkserver(cfg, @srv2) do
ObjectSpace.each_object(Yahns::TmpIO) { |io| io.close unless io.closed? }
@srv.close
cfg.instance_eval do
app(:rack, ProxiedApp.new) do
output_buffering false
listen "#{host2}:#{port2}"
end
stderr_path err.path
end
end
s = TCPSocket.new(host, port)
req = "GET /giant-body HTTP/1.1\r\nHost: example.com\r\n" \
"Connection: close\r\n\r\n"
s.write(req)
bufs = []
sleep 1
10.times do
sleep 0.1
# ensure no files get created
if RUBY_PLATFORM =~ /\blinux\b/ && `which lsof 2>/dev/null`.size >= 4
deleted1 = `lsof -p #{pid}`.split("\n")
deleted1 = deleted1.grep(/\bREG\b.* \(deleted\)/)
deleted2 = `lsof -p #{pid2}`.split("\n")
deleted2 = deleted2.grep(/\bREG\b.* \(deleted\)/)
[ deleted1, deleted2 ].each do |ary|
ary.delete_if { |x| x =~ /\.(?:err|out) \(deleted\)/ }
end
assert_equal 1, deleted1.size, "pid1=#{deleted1.inspect}"
assert_equal 0, deleted2.size, "pid2=#{deleted2.inspect}"
bufs.push(deleted1[0])
end
end
before = bufs.size
bufs.uniq!
assert bufs.size < before, 'unlinked buffer should not grow'
buf = ''.dup
slow = Digest::MD5.new
ft = Thread.new do
fast = Digest::MD5.new
f = TCPSocket.new(host2, port2)
f.write(req)
b2 = ''.dup
check_headers(f)
nf = 0
begin
f.readpartial(1024 * 1024, b2)
nf += b2.bytesize
fast.update(b2)
rescue EOFError
f = f.close
end while f
b2.clear
[ nf, fast.hexdigest ]
end
Thread.abort_on_exception = true
check_headers(s)
n = 0
begin
s.readpartial(1024 * 1024, buf)
slow.update(buf)
n += buf.bytesize
sleep 0.01
rescue EOFError
s = s.close
end while s
ft.join(5)
assert_equal [n, slow.hexdigest ], ft.value
fast = Digest::MD5.new
f = TCPSocket.new(host, port)
f.write(req)
check_headers(f)
begin
f.readpartial(1024 * 1024, buf)
fast.update(buf)
rescue EOFError
f = f.close
end while f
buf.clear
assert_equal slow.hexdigest, fast.hexdigest
ensure
s.close if s
quit_wait(pid)
quit_wait(pid2)
end
end
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