# File lib/net/http/generic_request.rb, line 11
def initialize(m, reqbody, resbody, uri_or_path, initheader = nil)
  @method = m
  @request_has_body = reqbody
  @response_has_body = resbody

  if URI === uri_or_path then
    raise ArgumentError, "not an HTTP URI" unless URI::HTTP === uri_or_path
    raise ArgumentError, "no host component for URI" unless uri_or_path.hostname
    @uri = uri_or_path.dup
    host = @uri.hostname.dup
    host << ":".freeze << @uri.port.to_s if @uri.port != @uri.default_port
    @path = uri_or_path.request_uri
    raise ArgumentError, "no HTTP request path given" unless @path
  else
    @uri = nil
    host = nil
    raise ArgumentError, "no HTTP request path given" unless uri_or_path
    raise ArgumentError, "HTTP request path is empty" if uri_or_path.empty?
    @path = uri_or_path.dup
  end

  @decode_content = false

  if @response_has_body and Net::HTTP::HAVE_ZLIB then
    if !initheader ||
       !initheader.keys.any? { |k|
         %w[accept-encoding range].include? k.downcase
       } then
      @decode_content = true
      initheader = initheader ? initheader.dup : {}
      initheader["accept-encoding"] =
        "gzip;q=1.0,deflate;q=0.6,identity;q=0.3"
    end
  end

  initialize_http_header initheader
  self['Accept'] ||= '*/*'
  self['User-Agent'] ||= 'Ruby'
  self['Host'] ||= host if host
  @body = nil
  @body_stream = nil
  @body_data = nil
end

# File lib/net/http/generic_request.rb, line 93
def body=(str)
  @body = str
  @body_stream = nil
  @body_data = nil
  str
end

# File lib/net/http/generic_request.rb, line 86
def body_exist?
  warn "Net::HTTPRequest#body_exist? is obsolete; use response_body_permitted?", uplevel: 1 if $VERBOSE
  response_body_permitted?
end

# File lib/net/http/generic_request.rb, line 102
def body_stream=(input)
  @body = nil
  @body_stream = input
  @body_data = nil
  input
end

# File lib/net/http/generic_request.rb, line 64
def inspect
  "\#<#{self.class} #{@method}>"
end

# File lib/net/http/generic_request.rb, line 78
def request_body_permitted?
  @request_has_body
end

# File lib/net/http/generic_request.rb, line 82
def response_body_permitted?
  @response_has_body
end

# File lib/net/http/generic_request.rb, line 237
def encode_multipart_form_data(out, params, opt)
  charset = opt[:charset]
  boundary = opt[:boundary]
  require 'securerandom' unless defined?(SecureRandom)
  boundary ||= SecureRandom.urlsafe_base64(40)
  chunked_p = chunked?

  buf = ''
  params.each do |key, value, h={}|
    key = quote_string(key, charset)
    filename =
      h.key?(:filename) ? h[:filename] :
      value.respond_to?(:to_path) ? File.basename(value.to_path) :
      nil

    buf << "--#{boundary}\r\n"
    if filename
      filename = quote_string(filename, charset)
      type = h[:content_type] || 'application/octet-stream'
      buf << "Content-Disposition: form-data; " \
        "name=\"#{key}\"; filename=\"#{filename}\"\r\n" \
        "Content-Type: #{type}\r\n\r\n"
      if !out.respond_to?(:write) || !value.respond_to?(:read)
        # if +out+ is not an IO or +value+ is not an IO
        buf << (value.respond_to?(:read) ? value.read : value)
      elsif value.respond_to?(:size) && chunked_p
        # if +out+ is an IO and +value+ is a File, use IO.copy_stream
        flush_buffer(out, buf, chunked_p)
        out << "%x\r\n" % value.size if chunked_p
        IO.copy_stream(value, out)
        out << "\r\n" if chunked_p
      else
        # +out+ is an IO, and +value+ is not a File but an IO
        flush_buffer(out, buf, chunked_p)
        1 while flush_buffer(out, value.read(4096), chunked_p)
      end
    else
      # non-file field:
      #   HTML5 says, "The parts of the generated multipart/form-data
      #   resource that correspond to non-file fields must not have a
      #   Content-Type header specified."
      buf << "Content-Disposition: form-data; name=\"#{key}\"\r\n\r\n"
      buf << (value.respond_to?(:read) ? value.read : value)
    end
    buf << "\r\n"
  end
  buf << "--#{boundary}--\r\n"
  flush_buffer(out, buf, chunked_p)
  out << "0\r\n\r\n" if chunked_p
end

# File lib/net/http/generic_request.rb, line 293
def flush_buffer(out, buf, chunked_p)
  return unless buf
  out << "%x\r\n"%buf.bytesize if chunked_p
  out << buf
  out << "\r\n" if chunked_p
  buf.clear
end

# File lib/net/http/generic_request.rb, line 288
def quote_string(str, charset)
  str = str.encode(charset, fallback:->(c){'&#%d;'%c.encode("UTF-8").ord}) if charset
  str.gsub(/[\\"]/, '\\\\\&')
end

# File lib/net/http/generic_request.rb, line 183
def send_request_with_body(sock, ver, path, body)
  self.content_length = body.bytesize
  delete 'Transfer-Encoding'
  supply_default_content_type
  write_header sock, ver, path
  wait_for_continue sock, ver if sock.continue_timeout
  sock.write body
end

# File lib/net/http/generic_request.rb, line 211
def send_request_with_body_data(sock, ver, path, params)
  if /\Amultipart\/form-data\z/i !~ self.content_type
    self.content_type = 'application/x-www-form-urlencoded'
    return send_request_with_body(sock, ver, path, URI.encode_www_form(params))
  end

  opt = @form_option.dup
  require 'securerandom' unless defined?(SecureRandom)
  opt[:boundary] ||= SecureRandom.urlsafe_base64(40)
  self.set_content_type(self.content_type, boundary: opt[:boundary])
  if chunked?
    write_header sock, ver, path
    encode_multipart_form_data(sock, params, opt)
  else
    require 'tempfile'
    file = Tempfile.new('multipart')
    file.binmode
    encode_multipart_form_data(file, params, opt)
    file.rewind
    self.content_length = file.size
    write_header sock, ver, path
    IO.copy_stream(file, sock)
    file.close(true)
  end
end

# File lib/net/http/generic_request.rb, line 192
def send_request_with_body_stream(sock, ver, path, f)
  unless content_length() or chunked?
    raise ArgumentError,
        "Content-Length not given and Transfer-Encoding is not `chunked'"
  end
  supply_default_content_type
  write_header sock, ver, path
  wait_for_continue sock, ver if sock.continue_timeout
  if chunked?
    chunker = Chunker.new(sock)
    IO.copy_stream(f, chunker)
    chunker.finish
  else
    # copy_stream can sendfile() to sock.io unless we use SSL.
    # If sock.io is an SSLSocket, copy_stream will hit SSL_write()
    IO.copy_stream(f, sock.io)
  end
end

# File lib/net/http/generic_request.rb, line 301
def supply_default_content_type
  return if content_type()
  warn 'net/http: Content-Type did not set; using application/x-www-form-urlencoded', uplevel: 1 if $VERBOSE
  set_content_type 'application/x-www-form-urlencoded'
end

# File lib/net/http/generic_request.rb, line 311
def wait_for_continue(sock, ver)
  if ver >= '1.1' and @header['expect'] and
      @header['expect'].include?('100-continue')
    if sock.io.to_io.wait_readable(sock.continue_timeout)
      res = Net::HTTPResponse.read_new(sock)
      unless res.kind_of?(Net::HTTPContinue)
        res.decode_content = @decode_content
        throw :response, res
      end
    end
  end
end

# File lib/net/http/generic_request.rb, line 324
def write_header(sock, ver, path)
  reqline = "#{@method} #{path} HTTP/#{ver}"
  if /[\r\n]/ =~ reqline
    raise ArgumentError, "A Request-Line must not contain CR or LF"
  end
  buf = ""
  buf << reqline << "\r\n"
  each_capitalized do |k,v|
    buf << "#{k}: #{v}\r\n"
  end
  buf << "\r\n"
  sock.write buf
end