* See https://bugs.ruby-lang.org/issues/13882#note-6

This reverts commit 5105240b1e851410020b3b3f1a2bead7ffdd4291.

In RFC 2616:

```
   deflate
        The "zlib" format defined in RFC 1950 [31] in combination with
        the "deflate" compression mechanism described in RFC 1951 [29].
```

So "Content-Encoding: deflate" means zlib format, not raw deflate.

[Bug #11268]

Net::HTTP had used `Zlib::Inflate.new(32 + Zlib::MAX_WBITS)` for all
content encoding (deflate, zlib, and gzip).
But the argument `32 + Zlib::MAX_WBITS` means zlib and gzip decoding
with automatic header detection, so (raw) deflate compression had not
been supported.

This change makes it support raw deflate correctly by passing an
argument `-Zlib::MAX_WBITS` (which means raw deflate) to
`Zlib::Inflate.new`.  All deflate-mode tests are fixed too.

[Bug #11268]

* Make links from Net::GenericHTTPRequest work;
* Document +dest+ param of HTTPResponse#read_body;
* Slightly improve reference to particular response
  classes from HTTPResponse class docs.

We no longer need the compressed data once the inflate block is
called; so clear it ASAP to reduce memory overhead.  This is a
small chunk, so it only saves a few hundred kilobytes with the
script below.

before:        RssAnon:     5976 kB
 after:        RssAnon:     5564 kB
------
require 'net/http'
require 'zlib'
response_gz = ARGV.shift or abort "#$0 TEMPORARY_FILE"

 # pre-create response since compressing is slower than decompressing
unless File.readable?(response_gz)
  nr = 16384 * 2
  buf = ((0..255).map(&:chr).join * 128)
  File.open(response_gz, 'wb') do |fp|
    gzip = Zlib::GzipWriter.new(fp)
    nr.times { gzip.write(buf) }
    gzip.close
  end
  buf.clear
end
response_gz = File.open(response_gz)

s = TCPServer.new('127.0.0.1', 0)
pid = fork do
  c = s.accept
  c.readpartial(16384).clear
  c.write("HTTP/1.1 200 OK\r\n" \
          "Content-Length: #{response_gz.stat.size}\r\n" \
          "Content-Encoding: gzip\r\n" \
          "Accept-Ranges: bytes\r\n" \
          "\r\n")
  IO.copy_stream(response_gz, c)
  c.close
end

addr = s.addr
Net::HTTP.start(addr[3], addr[1]) do |http|
  http.request_get(-'/') do |res|
    res.read_body(&:clear)
  end
end
puts File.readlines(-'/proc/self/status').grep(/RssAnon/)[0]
Process.waitpid2(pid)
------
* lib/net/http/response.rb (inflate_adapter): clear compressed_chunk

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61684 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

If uplevel keyword is given, the warning message is prepended
with caller file and line information and the string "warning: ".
The use of the uplevel keyword makes Kernel#warn format output
similar to how rb_warn formats output.

This patch modifies net/ftp and net/imap to use Kernel#warn
instead of $stderr.puts or $stderr.printf, since they are used
for printing warnings.

This makes lib/cgi/core and tempfile use $stderr.puts instead of
warn for debug logging, since they are used for debug printing
and not for warning.

This does not modify bundler, rubygems, or rdoc, as those are
maintained outside of ruby and probably wish to remain backwards
compatible with older ruby versions.

rb_warn_m code is originally from nobu, but I've changed it
so that it only includes the path and lineno from uplevel
(not the method), and also prepends the string "warning: ",
to make it more similar to rb_warn.

From: Jeremy Evans code@jeremyevans.net
Signed-off-by: Urabe Shyouhei shyouhei@ruby-lang.org


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61155 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60288 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Patch by: Dmitry Vorotilin <d.vorotilin@gmail.com> (@route)
Signed-off-by: Akira Matsuda <ronnie@dio.jp>

closes #1475

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56681 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  [fix GH-1411][ci skip] Patch by @stz-seongheon

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56350 b2dd03c8-39d4-4d8f-98ff-823fe69b080e