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require 'drb/drb'
require 'net/http'
require 'uri'
module DRb
module HTTP0
class StrStream
def initialize(str='')
@buf = str
end
attr_reader :buf
def read(n)
begin
return @buf[0,n]
ensure
@buf[0,n] = ''
end
end
def write(s)
@buf.concat s
end
end
def self.uri_option(uri, config)
return uri, nil
end
def self.open(uri, config)
unless /^http:/ =~ uri
raise(DRbBadScheme, uri) unless uri =~ /^http:/
raise(DRbBadURI, 'can\'t parse uri:' + uri)
end
ClientSide.new(uri, config)
end
class ClientSide
def initialize(uri, config)
@uri = uri
@res = nil
@config = config
@msg = DRbMessage.new(config)
@proxy = ENV['HTTP_PROXY']
end
def close; end
def alive?; false; end
def send_request(ref, msg_id, *arg, &b)
stream = StrStream.new
@msg.send_request(stream, ref, msg_id, *arg, &b)
@reply_stream = StrStream.new
post(@uri, stream.buf)
end
def recv_reply
@msg.recv_reply(@reply_stream)
end
def post(url, data)
it = URI.parse(url)
path = [(it.path=='' ? '/' : it.path), it.query].compact.join('?')
http = Net::HTTP.new(it.host, it.port)
sio = StrStream.new
http.post(path, data, {'Content-Type'=>'application/octetstream;'}) do |str|
sio.write(str)
if @config[:load_limit] < sio.buf.size
raise TypeError, 'too large packet'
end
end
@reply_stream = sio
end
end
end
DRbProtocol.add_protocol(HTTP0)
end
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