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|
require File.expand_path('../api/event_target', __FILE__)
require File.expand_path('../api/event', __FILE__)
module Faye
class WebSocket
module API
CONNECTING = 0
OPEN = 1
CLOSING = 2
CLOSED = 3
CLOSE_TIMEOUT = 30
include EventTarget
extend Forwardable
def_delegators :@driver, :version
attr_reader :url, :ready_state, :buffered_amount
def initialize(options = {})
@ready_state = CONNECTING
super()
::WebSocket::Driver.validate_options(options, [
:headers, :extensions, :max_length, :ping, :proxy, :tls, :binary_data_format
])
@driver = yield
if headers = options[:headers]
headers.each { |name, value| @driver.set_header(name, value) }
end
[*options[:extensions]].each do |extension|
@driver.add_extension(extension)
end
@ping = options[:ping]
@ping_id = 0
@buffered_amount = 0
@close_params = @close_timer = @ping_timer = @proxy = @stream = nil
@onopen = @onmessage = @onclose = @onerror = nil
@driver.on(:open) { |e| open }
@driver.on(:message) { |e| receive_message(e.data) }
@driver.on(:close) { |e| begin_close(e.reason, e.code, :wait_for_write => true) }
@driver.on(:error) do |error|
emit_error(error.message)
end
if @ping
@ping_timer = EventMachine.add_periodic_timer(@ping) do
@ping_id += 1
ping(@ping_id.to_s)
end
end
end
def write(data)
@stream.write(data)
end
def send(message)
return false if @ready_state > OPEN
case message
when Numeric then
@driver.text(message.to_s)
when String then
if message.encoding == Encoding::BINARY
@driver.binary(message)
else
@driver.text(message)
end
when Array then
@driver.binary(message)
else
false
end
end
def ping(message = '', &callback)
return false if @ready_state > OPEN
@driver.ping(message, &callback)
end
def close(code = nil, reason = nil)
code ||= 1000
reason ||= ''
unless code == 1000 or (code >= 3000 and code <= 4999)
raise ArgumentError, "Failed to execute 'close' on WebSocket: " +
"The code must be either 1000, or between 3000 and 4999. " +
"#{ code } is neither."
end
if @ready_state < CLOSING
@close_timer = EventMachine.add_timer(CLOSE_TIMEOUT) { begin_close('', 1006) }
end
@ready_state = CLOSING unless @ready_state == CLOSED
@driver.close(reason, code)
end
def protocol
@driver.protocol || ''
end
private
def open
return unless @ready_state == CONNECTING
@ready_state = OPEN
event = Event.create('open')
event.init_event('open', false, false)
dispatch_event(event)
end
def receive_message(data)
return unless @ready_state == OPEN
event = Event.create('message', :data => data)
event.init_event('message', false, false)
dispatch_event(event)
end
def emit_error(message)
return if @ready_state >= CLOSING
event = Event.create('error', :message => message)
event.init_event('error', false, false)
dispatch_event(event)
end
def begin_close(reason, code, options = {})
return if @ready_state == CLOSED
@ready_state = CLOSING
@close_params = [reason, code]
if @stream
if options[:wait_for_write]
@stream.close_connection_after_writing
else
@stream.close_connection
end
else
finalize_close
end
end
def finalize_close
return if @ready_state == CLOSED
@ready_state = CLOSED
EventMachine.cancel_timer(@close_timer) if @close_timer
EventMachine.cancel_timer(@ping_timer) if @ping_timer
reason = @close_params ? @close_params[0] : ''
code = @close_params ? @close_params[1] : 1006
event = Event.create('close', :code => code, :reason => reason)
event.init_event('close', false, false)
dispatch_event(event)
end
def parse(data)
worker = @proxy || @driver
worker.parse(data)
end
end
end
end
|
