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=begin
SOAP4R - Stream handler.
Copyright (C) 2000, 2001, 2003  NAKAMURA, Hiroshi.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PRATICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 675 Mass
Ave, Cambridge, MA 02139, USA.
=end


require 'soap/soap'


module SOAP


class StreamHandler
  Client = begin
      require 'http-access2'
      if HTTPAccess2::VERSION < "2.0"
	raise LoadError.new("http-access/2.0 or later is required.")
      end
      HTTPAccess2::Client
    rescue LoadError
      STDERR.puts "Loading http-access2 failed.  Net/http is used." if $DEBUG
      require 'soap/netHttpClient'
      SOAP::NetHttpClient
    end

  RUBY_VERSION_STRING = "ruby #{ RUBY_VERSION } (#{ RUBY_RELEASE_DATE }) [#{ RUBY_PLATFORM }]"

  class ConnectionData
    attr_accessor :send_string
    attr_accessor :send_contenttype
    attr_accessor :receive_string
    attr_accessor :receive_contenttype

    def initialize
      @send_string = nil
      @send_contenttype = nil
      @receive_string = nil
      @receive_contenttype = nil
      @bag = {}
    end

    def [](idx)
      @bag[idx]
    end

    def []=(idx, value)
      @bag[idx] = value
    end
  end

  attr_accessor :endpoint_url

  def initialize(endpoint_url)
    @endpoint_url = endpoint_url
  end

  def self.parse_media_type(str)
    if /^#{ MediaType }(?:\s*;\s*charset=([^"]+|"[^"]+"))?$/i !~ str
      raise StreamError.new("Illegal media type.");
    end
    charset = $1
    charset.gsub!(/"/, '') if charset
    charset
  end

  def self.create_media_type(charset)
    "#{ MediaType }; charset=#{ charset }"
  end
end


class HTTPPostStreamHandler < StreamHandler
  include SOAP

public
  
  attr_accessor :wiredump_dev
  attr_accessor :wiredump_file_base
  attr_accessor :charset
  
  NofRetry = 10       	# [times]
  ConnectTimeout = 20   # [sec]
  SendTimeout = 60	# [sec]
  ReceiveTimeout = 60   # [sec]

  def initialize(endpoint_url, proxy = nil, charset = nil)
    super(endpoint_url)
    @proxy = proxy || ENV['http_proxy'] || ENV['HTTP_PROXY']
    @charset = charset || XSD::Charset.charset_label($KCODE)
    @wiredump_dev = nil	# Set an IO to get wiredump.
    @wiredump_file_base = nil
    @client = Client.new(@proxy, "SOAP4R/#{ Version }")
    @client.session_manager.connect_timeout = ConnectTimeout
    @client.session_manager.send_timeout = SendTimeout
    @client.session_manager.receive_timeout = ReceiveTimeout
  end

  def proxy=(proxy)
    @proxy = proxy
    @client.proxy = @proxy
  end

  def send(soap_string, soapaction = nil, charset = @charset)
    send_post(soap_string, soapaction, charset)
  end

  def reset
    @client.reset(@endpoint_url)
  end

private

  def send_post(soap_string, soapaction, charset)
    data = ConnectionData.new
    data.send_string = soap_string
    data.send_contenttype = StreamHandler.create_media_type(charset)

    wiredump_dev = if @wiredump_dev && @wiredump_dev.respond_to?("<<")
	@wiredump_dev
      else
	nil
      end
    @client.debug_dev = wiredump_dev

    if @wiredump_file_base
      filename = @wiredump_file_base + '_request.xml'
      f = File.open(filename, "w")
      f << soap_string
      f.close
    end

    extra = {}
    extra['Content-Type'] = data.send_contenttype
    extra['SOAPAction'] = "\"#{ soapaction }\""

    wiredump_dev << "Wire dump:\n\n" if wiredump_dev
    begin
      res = @client.post(@endpoint_url, soap_string, extra)
    rescue
      @client.reset(@endpoint_url)
      raise
    end
    wiredump_dev << "\n\n" if wiredump_dev

    receive_string = res.content

    if @wiredump_file_base
      filename = @wiredump_file_base + '_response.xml'
      f = File.open(filename, "w")
      f << receive_string
      f.close
    end

    case res.status
    when 405
      raise PostUnavailableError.new("#{ res.status }: #{ res.reason }")
    when 200, 500
      # Nothing to do.
    else
      raise HTTPStreamError.new("#{ res.status }: #{ res.reason }")
    end

    data.receive_string = receive_string
    data.receive_contenttype = res.contenttype

    return data
  end

  CRLF = "\r\n"
end


end