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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'
require 'json'
require 'digest'
begin
require 'kcar'
require 'yahns/proxy_pass'
rescue LoadError
end
class TestProxyPass < Testcase
ENV["N"].to_i > 1 and parallelize_me!
include ServerHelper
OMFG = 'a' * (1024 * 1024 * 32)
TRUNCATE_BODY = "HTTP/1.1 200 OK\r\n" \
"Content-Length: 7\r\n" \
"Content-Type: text/PAIN\r\n\r\nshort".freeze
TRUNCATE_HEAD = "HTTP/1.1 200 OK\r\n" \
"Content-Length: 666\r\n".freeze
# not too big, or kcar will reject
BIG_HEADER = [%w(Content-Type text/plain), %W(Content-Length #{OMFG.size})]
3000.times { |i| BIG_HEADER << %W(X-#{i} BIG-HEADER!!!!!!!!!!!!!!) }
BIG_HEADER.freeze
STR4 = 'abcd' * (256 * 1024)
NCHUNK = 50
class ProxiedApp
def call(env)
h = [ %w(Content-Length 3), %w(Content-Type text/plain) ]
case env['REQUEST_METHOD']
when 'GET'
case env['PATH_INFO']
when '/giant-body'
h = [ %W(Content-Length #{OMFG.size}), %w(Content-Type text/plain) ]
[ 200, h, [ OMFG ] ]
when '/giant-chunky-body'
h = [ %w(content-type text/pain), %w(transfer-encoding chunked) ]
chunky = Object.new
def chunky.each
head = STR4.size.to_s(16) << "\r\n"
NCHUNK.times do
yield head
yield STR4
yield "\r\n".freeze
end
yield "0\r\n\r\n"
end
[ 200, h, chunky ]
when '/big-headers'
[ 200, BIG_HEADER, [ OMFG ] ]
when '/oversize-headers'
100000.times { |x| h << %W(X-TOOBIG-#{x} #{x}) }
[ 200, h, [ "big" ] ]
when %r{\A/slow-headers-(\d+(?:\.\d+)?)\z}
delay = $1.to_f
io = env['rack.hijack'].call
[ "HTTP/1.1 200 OK\r\n",
"Content-Length: 7\r\n",
"Content-Type: text/PAIN\r\n",
"connection: close\r\n\r\n",
"HIHIHI!"
].each do |l|
io.write(l)
sleep delay
end
io.close
when '/truncate-body'
io = env['rack.hijack'].call
io.write(TRUNCATE_BODY)
io.close
when '/eof-body-fast'
io = env['rack.hijack'].call
io.write("HTTP/1.0 200 OK\r\n\r\neof-body-fast")
io.close
when '/eof-body-slow'
io = env['rack.hijack'].call
io.write("HTTP/1.0 200 OK\r\n\r\n")
sleep 0.1
io.write("eof-body-slow")
io.close
when '/truncate-head'
io = env['rack.hijack'].call
io.write(TRUNCATE_HEAD)
io.close
when '/response-trailer'
h = [
%w(Content-Type text/pain),
%w(Transfer-Encoding chunked),
%w(Trailer Foo)
]
b = [ "3\r\n", "hi\n", "\r\n", "0\r\n", "Foo: bar", "\r\n", "\r\n" ]
case env['HTTP_X_TRAILER']
when 'fast'
b = [ b.join ]
when 'allslow'
def b.each
size.times do |i|
sleep 0.1
yield self[i]
end
end
when /\Atlrslow(\d+)/
b.instance_variable_set(:@yahns_sleep_thresh, $1.to_i)
def b.each
size.times do |i|
sleep(0.1) if i > @yahns_sleep_thresh
yield self[i]
end
end
end
[ 200, h, b ]
when '/immediate-EOF'
env['rack.hijack'].call.close
when %r{\A/chunky-slow-(\d+(?:\.\d+)?)\z}
delay = $1.to_f
chunky = Object.new
chunky.instance_variable_set(:@delay, delay)
if env['HTTP_VERSION'] == 'HTTP/1.0'
h = [ %w(Content-Type text/pain), %w(Content-Length 3) ]
def chunky.each
%w(H I !).each do |x|
sleep @delay
yield x
end
end
else
h = [ %w(Content-Type text/pain), %w(Transfer-Encoding chunked) ]
def chunky.each
sleep @delay
yield "3\r\nHI!\r\n"
sleep @delay
yield "0\r\n\r\n"
end
end
[ 200, h, chunky ]
else
[ 200, h, [ "hi\n"] ]
end
when 'HEAD'
case env['PATH_INFO']
when '/big-headers'
[ 200, BIG_HEADER, [] ]
else
[ 200, h, [] ]
end
when 'PUT'
case env['PATH_INFO']
when '/forbidden-put'
# ignore rack.input
[ 403, [ %w(Content-Type text/html), %w(Content-Length 0) ], [] ]
when '/forbidden-put-abort'
env['rack.hijack'].call.close
# should not be seen:
[ 123, [ %w(Content-Type text/html), %w(Content-Length 0) ], [] ]
when '/204'
buf = env['rack.input'].read # drain
[ 204, {}, [] ]
else
buf = env['rack.input'].read
[ 201, {
'Content-Length' => buf.bytesize.to_s,
'Content-Type' => 'text/plain',
}, [ buf ] ]
end
end
end
end
def setup
@srv2 = TCPServer.new(ENV["TEST_HOST"] || "127.0.0.1", 0)
server_helper_setup
skip "kcar missing yahns/proxy_pass" unless defined?(Kcar)
end
def teardown
@srv2.close if defined?(@srv2) && !@srv2.closed?
server_helper_teardown
end
def test_unix_socket_no_path
tmpdir = yahns_mktmpdir
unix_path = "#{tmpdir}/proxy_pass.sock"
unix_srv = UNIXServer.new(unix_path)
err, cfg, host, port = @err, Yahns::Config.new, @srv.addr[3], @srv.addr[1]
host2, port2 = @srv2.addr[3], @srv2.addr[1]
pid = mkserver(cfg) do
@srv.autoclose = @srv2.autoclose = false
ENV["YAHNS_FD"] = "#{@srv.fileno},#{@srv2.fileno}"
cfg.instance_eval do
app(:rack, Yahns::ProxyPass.new("unix:#{unix_path}:/$fullpath")) do
listen "#{host}:#{port}"
end
app(:rack, Yahns::ProxyPass.new("unix:#{unix_path}:/foo$fullpath")) do
listen "#{host2}:#{port2}"
end
stderr_path err.path
end
end
pid2 = mkserver(cfg, unix_srv) do
@srv.close
@srv2.close
cfg.instance_eval do
rapp = lambda do |env|
body = env.to_json
hdr = {
'Content-Length' => body.bytesize.to_s,
'Content-Type' => 'application/json',
}
[ 200, hdr, [ body ] ]
end
app(:rack, rapp) { listen unix_path }
stderr_path err.path
end
end
Net::HTTP.start(host, port) do |http|
res = http.request(Net::HTTP::Get.new('/f00'))
assert_equal 200, res.code.to_i
body = JSON.parse(res.body)
assert_equal '/f00', body['PATH_INFO']
res = http.request(Net::HTTP::Get.new('/f00foo'))
assert_equal 200, res.code.to_i
body = JSON.parse(res.body)
assert_equal '/f00foo', body['PATH_INFO']
end
Net::HTTP.start(host2, port2) do |http|
res = http.request(Net::HTTP::Get.new('/Foo'))
assert_equal 200, res.code.to_i
body = JSON.parse(res.body)
assert_equal '/foo/Foo', body['PATH_INFO']
res = http.request(Net::HTTP::Get.new('/Foofoo'))
assert_equal 200, res.code.to_i
body = JSON.parse(res.body)
assert_equal '/foo/Foofoo', body['PATH_INFO']
end
ensure
quit_wait(pid)
quit_wait(pid2)
unix_srv.close if unix_srv
FileUtils.rm_rf(tmpdir) if tmpdir
end
def test_proxy_pass
err, cfg, host, port = @err, Yahns::Config.new, @srv.addr[3], @srv.addr[1]
host2, port2 = @srv2.addr[3], @srv2.addr[1]
pid = mkserver(cfg) do
@srv2.close
cfg.instance_eval do
app(:rack, Yahns::ProxyPass.new("http://#{host2}:#{port2}")) do
listen "#{host}:#{port}"
client_max_body_size nil
end
stderr_path err.path
end
end
pid2 = mkserver(cfg, @srv2) do
@srv.close
cfg.instance_eval do
app(:rack, ProxiedApp.new) do
listen "#{host2}:#{port2}"
client_max_body_size nil
input_buffering :lazy
end
stderr_path err.path
end
end
check_204_on_put(host, port)
check_forbidden_put(host, port)
check_eof_body(host, port)
check_pipelining(host, port)
check_response_trailer(host, port)
gplv3 = File.open('COPYING')
Net::HTTP.start(host, port) do |http|
res = http.request(Net::HTTP::Get.new('/'))
assert_equal 200, res.code.to_i
n = res.body.bytesize
assert_operator n, :>, 1
res = http.request(Net::HTTP::Head.new('/'))
assert_equal 200, res.code.to_i
assert_equal n, res['Content-Length'].to_i
assert_nil res.body
# chunked encoding (PUT)
req = Net::HTTP::Put.new('/')
req.body_stream = gplv3
req.content_type = 'application/octet-stream'
req['Transfer-Encoding'] = 'chunked'
res = http.request(req)
gplv3.rewind
assert_equal gplv3.read, res.body
assert_equal 201, res.code.to_i
# chunked encoding (GET)
res = http.request(Net::HTTP::Get.new('/chunky-slow-0.1'))
assert_equal 200, res.code.to_i
assert_equal 'chunked', res['Transfer-encoding']
assert_equal "HI!", res.body
# slow headers (GET)
res = http.request(Net::HTTP::Get.new('/slow-headers-0.01'))
assert_equal 200, res.code.to_i
assert_equal 'text/PAIN', res['Content-Type']
assert_equal 'HIHIHI!', res.body
# normal content-length (PUT)
gplv3.rewind
req = Net::HTTP::Put.new('/')
req.body_stream = gplv3
req.content_type = 'application/octet-stream'
req.content_length = gplv3.size
res = http.request(req)
gplv3.rewind
assert_equal gplv3.read, res.body
assert_equal 201, res.code.to_i
# giant body
res = http.request(Net::HTTP::Get.new('/giant-body'))
assert_equal 200, res.code.to_i
assert_equal OMFG, res.body
# giant chunky body
sha1 = Digest::SHA1.new
http.request(Net::HTTP::Get.new('/giant-chunky-body')) do |response|
response.read_body do |chunk|
sha1.update(chunk)
end
end
check = Digest::SHA1.new
NCHUNK.times { check.update(STR4) }
assert_equal check.hexdigest, sha1.hexdigest
# giant PUT content-length
req = Net::HTTP::Put.new('/')
req.body_stream = StringIO.new(OMFG)
req.content_type = 'application/octet-stream'
req.content_length = OMFG.size
res = http.request(req)
assert_equal OMFG, res.body
assert_equal 201, res.code.to_i
# giant PUT chunked encoding
req = Net::HTTP::Put.new('/')
req.body_stream = StringIO.new(OMFG)
req.content_type = 'application/octet-stream'
req['Transfer-Encoding'] = 'chunked'
res = http.request(req)
assert_equal OMFG, res.body
assert_equal 201, res.code.to_i
# sometimes upstream feeds kcar too much
req = Net::HTTP::Get.new('/oversize-headers')
res = http.request(req)
errs = File.readlines(@err.path).grep(/ERROR/)
assert_equal 1, errs.size
assert_match %r{upstream response error:}, errs[0]
@err.truncate(0)
end
# ensure we do not chunk responses back to an HTTP/1.0 client even if
# the proxy <-> upstream connection is chunky
%w(0 0.1).each do |delay|
begin
h10 = TCPSocket.new(host, port)
h10.write "GET /chunky-slow-#{delay} HTTP/1.0\r\n\r\n"
res = Timeout.timeout(60) { h10.read }
assert_match %r{^Connection: close\r\n}, res
assert_match %r{^Content-Type: text/pain\r\n}, res
assert_match %r{\r\n\r\nHI!\z}, res
refute_match %r{^Transfer-Encoding:}, res
refute_match %r{\r0\r\n}, res
ensure
h10.close
end
end
check_truncated_upstream(host, port)
check_slow_giant_body(host, port)
check_slow_read_headers(host, port)
ensure
gplv3.close if gplv3
quit_wait pid
quit_wait pid2
end
def check_pipelining(host, port)
pl = TCPSocket.new(host, port)
r1 = ''.dup
r2 = ''.dup
r3 = ''.dup
Timeout.timeout(60) do
pl.write "GET / HTTP/1.1\r\nHost: example.com\r\n\r\nGET /"
until r1 =~ /hi\n/
r1 << pl.readpartial(666)
end
pl.write "chunky-slow-0.1 HTTP/1.1\r\nHost: example.com\r\n\r\nP"
until r2 =~ /\r\n3\r\nHI!\r\n0\r\n\r\n/
r2 << pl.readpartial(666)
end
pl.write "UT / HTTP/1.1\r\nHost: example.com\r\n"
pl.write "Transfer-Encoding: chunked\r\n\r\n"
pl.write "6\r\nchunky\r\n"
pl.write "0\r\n\r\n"
until r3 =~ /chunky/
r3 << pl.readpartial(666)
end
# ensure stuff still works after a chunked upload:
pl.write "GET / HTTP/1.1\r\nHost: example.com\r\n\r\nP"
after_up = ''.dup
until after_up =~ /hi\n/
after_up << pl.readpartial(666)
end
re = /^Date:[^\r\n]+/
assert_equal after_up.sub(re, ''), r1.sub(re, '')
# another upload, this time without chunking
pl.write "UT / HTTP/1.1\r\nHost: example.com\r\n"
pl.write "Content-Length: 8\r\n\r\n"
pl.write "identity"
identity = ''.dup
until identity =~ /identity/
identity << pl.readpartial(666)
end
assert_match %r{identity\z}, identity
assert_match %r{\AHTTP/1\.1 201\b}, identity
# ensure stuff still works after an identity upload:
pl.write "GET / HTTP/1.1\r\nHost: example.com\r\n\r\n"
after_up = ''.dup
until after_up =~ /hi\n/
after_up << pl.readpartial(666)
end
re = /^Date:[^\r\n]+/
assert_equal after_up.sub(re, ''), r1.sub(re, '')
pl.write "GET / HTTP/1.1\r\nHost: example.com"
sleep 0.1 # hope epoll wakes up and reads in this time
pl.write "\r\n\r\nGET / HTTP/1.1\r\nHost: example.com\r\n\r\n"
burst = pl.readpartial(666)
until burst.scan(/^hi$/).size == 2
burst << pl.readpartial(666)
end
assert_equal 2, burst.scan(/^hi$/).size
assert_match %r{\r\n\r\nhi\n\z}, burst
end
r1 = r1.split("\r\n").reject { |x| x =~ /^Date: / }
r2 = r2.split("\r\n").reject { |x| x =~ /^Date: / }
assert_equal 'HTTP/1.1 200 OK', r1[0]
assert_equal 'HTTP/1.1 200 OK', r2[0]
assert_match %r{\r\n\r\nchunky\z}, r3
assert_match %r{\AHTTP/1\.1 201 Created\r\n}, r3
rescue => e
warn [ e.class, e.message ].inspect
warn e.backtrace.join("\n")
ensure
pl.close
end
def check_truncated_upstream(host, port)
# we want to make sure we show the truncated response without extra headers
s = TCPSocket.new(host, port)
check_err
res = Timeout.timeout(60) do
s.write "GET /truncate-body HTTP/1.1\r\nHost: example.com\r\n\r\n"
s.read
end
s.close
exp = "HTTP/1.1 200 OK\r\n" \
"Content-Length: 7\r\n" \
"Content-Type: text/PAIN\r\n" \
"Connection: keep-alive\r\n" \
"\r\nshort"
assert_equal exp, res
errs = File.readlines(@err.path).grep(/\bERROR\b/)
assert_equal 1, errs.size
assert_match(/upstream EOF/, errs[0])
@err.truncate(0)
# truncated headers or no response at all...
# Send a 502 error
%w(immediate-EOF truncate-head).each do |path|
s = TCPSocket.new(host, port)
check_err
res = Timeout.timeout(60) do
s.write "GET /#{path} HTTP/1.1\r\nHost: example.com\r\n\r\n"
s.read(1024)
end
assert_match %r{\AHTTP/1.1 502\s+}, res
s.close
errs = File.readlines(@err.path).grep(/\bERROR\b/)
assert_equal 1, errs.size
assert_match(/upstream EOF/, errs[0])
@err.truncate(0)
end
end
def check_slow_giant_body(host, port)
s = TCPSocket.new(host, port)
s.write "GET /giant-body HTTP/1.0\r\n\r\n"
sleep 0.1
str = ''.dup
buf = ''.dup
assert_raises(EOFError) { loop { str << s.readpartial(400, buf) } }
h, b = str.split(/\r\n\r\n/, 2)
assert_equal OMFG, b
assert_match %r{\AHTTP/1\.1 200\b}, h
ensure
s.close if s
end
def check_slow_read_headers(host, port)
s = TCPSocket.new(host, port)
s.write "GET /big-headers HTTP/1.1\r\nHost: example.com\r\n\r\n"
s.write "HEAD /big-headers HTTP/1.0\r\n\r\n"
buf = ''.dup
res = ''.dup
sleep 0.1
begin
res << s.readpartial(32786, buf)
rescue EOFError
break
end while true
# res = Timeout.timeout(60) { s.read }
assert_match %r{\r\n\r\n\z}, res
assert_match %r{\AHTTP/1\.1 200 OK}, res
ensure
s.close if s
end
def check_response_trailer(host, port)
thrs = [
"X-Trailer: fast\r\n",
"X-Trailer: allslow\r\n",
"X-Trailer: tlrslow1\r\n",
"X-Trailer: tlrslow2\r\n",
"X-Trailer: tlrslow3\r\n",
"X-Trailer: tlrslow4\r\n",
''
].map do |x|
Thread.new do
s = TCPSocket.new(host, port)
s.write "GET /response-trailer HTTP/1.1\r\n#{x}" \
"Host: example.com\r\n\r\n"
res = ''.dup
buf = ''.dup
Timeout.timeout(60) do
until res =~ /Foo: bar\r\n\r\n\z/
res << s.readpartial(16384, buf)
end
end
assert_match(%r{\r\n0\r\nFoo: bar\r\n\r\n\z}, res)
assert_match(%r{^Trailer: Foo\r\n}, res)
assert_match(%r{^Transfer-Encoding: chunked\r\n}, res)
assert_match(%r{\AHTTP/1\.1 200 OK\r\n}, res)
s.close
:OK
end
end
thrs.each { |t| assert_equal(:OK, t.value) }
end
def check_eof_body(host, port)
Timeout.timeout(30) do
s = TCPSocket.new(host, port)
s.write("GET /eof-body-fast HTTP/1.0\r\nConnection:keep-alive\r\n\r\n")
res = s.read
assert_match %r{\AHTTP/1\.[01] 200 OK\r\n}, res
assert_match %r{\r\nConnection: close\r\n}, res
assert_match %r{\r\n\r\neof-body-fast\z}, res
s.close
end
Timeout.timeout(60) do
s = TCPSocket.new(host, port)
s.write("GET /eof-body-fast HTTP/1.0\r\n\r\n")
res = s.read
assert_match %r{\AHTTP/1\.1 200 OK\r\n}, res
assert_match %r{\r\n\r\neof-body-fast\z}, res
s.close
s = TCPSocket.new(host, port)
s.write("GET /eof-body-slow HTTP/1.0\r\n\r\n")
res = s.read
assert_match %r{\AHTTP/1\.1 200 OK\r\n}, res
assert_match %r{\r\n\r\neof-body-slow\z}, res
s.close
# we auto-chunk on 1.1 requests and 1.0 backends
%w(eof-body-slow eof-body-fast).each do |x|
s = TCPSocket.new(host, port)
s.write("GET /#{x} HTTP/1.1\r\nHost: example.com\r\n\r\n")
res = ''.dup
res << s.readpartial(512) until res =~ /0\r\n\r\n\z/
s.close
head, body = res.split("\r\n\r\n", 2)
head = head.split("\r\n")
assert_equal 'HTTP/1.1 200 OK', head[0]
assert head.include?('Connection: keep-alive')
assert head.include?('Transfer-Encoding: chunked')
assert_match %r{\Ad\r\n#{x}\r\n0\r\n\r\n\z}, body
end
end
end
def check_forbidden_put(host, port)
to_close = []
Timeout.timeout(60) do
s = TCPSocket.new(host, port)
to_close << s
s.write("PUT /forbidden-put HTTP/1.1\r\nHost: example.com\r\n" \
"Content-Length: #{OMFG.size}\r\n\r\n")
assert_equal OMFG.size, s.write(OMFG),
"proxy fully buffers, upstream does not"
assert_match %r{\AHTTP/1\.1 403 }, s.readpartial(1024)
assert_raises(EOFError) { s.readpartial(1) }
s = TCPSocket.new(host, port)
to_close << s
s.write("PUT /forbidden-put-abort HTTP/1.1\r\nHost: example.com\r\n" \
"Content-Length: #{OMFG.size}\r\n\r\n")
assert_equal OMFG.size, s.write(OMFG),
"proxy fully buffers, upstream does not"
assert_match %r{\AHTTP/1\.1 502 Bad Gateway}, s.readpartial(1024)
assert_raises(EOFError) { s.readpartial(1) }
@err.truncate(0)
end
ensure
to_close.each(&:close)
end
def check_204_on_put(host, port)
s = TCPSocket.new(host, port)
s.write("PUT /204 HTTP/1.1\r\nHost: example.com\r\n" \
"Content-Length: 11\r\n" \
"Content-Type: application/octet-stream\r\n" \
"\r\nhello worldPUT")
buf = s.readpartial(1024)
assert_match %r{\AHTTP/1\.1 204}, buf
assert_match %r{\r\n\r\n\z}, buf
refute_match %r{^Transfer-Encoding}i, buf
refute_match %r{^Content-Length}i, buf
assert_match %r{^Connection: keep-alive\r\n}, buf
assert_nil IO.select([s], nil, nil, 1), 'connection persists..'
# make sure another on the same connection works
s.write(" / HTTP/1.1\r\nHost: example.com\r\n" \
"Content-Length: 11\r\n" \
"Content-Type: application/octet-stream\r\n" \
"\r\nhello world")
buf = s.readpartial(1024)
assert_match %r{\r\n\r\nhello world\z}, buf
assert_match %r{\AHTTP/1\.1 201}, buf
assert_match(%r{^Content-Length: 11\r\n}, buf)
assert_match %r{^Connection: keep-alive\r\n}, buf
assert_nil IO.select([s], nil, nil, 1), 'connection persists..'
ensure
s.close if s
end
end
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