在Faye Websocket for Ruby上,有一个对我不起作用的具体示例。
https://raw.githubusercontent.com/faye/faye-websocket-ruby/master/examples/app.rb
require 'faye/websocket'
require 'permessage_deflate'
require 'rack'
static = Rack::File.new(File.dirname(__FILE__))
options = {:extensions => [PermessageDeflate], :ping => 5}
App = lambda do |env|
if Faye::WebSocket.websocket?(env)
ws = Faye::WebSocket.new(env, ['irc', 'xmpp'], options)
p [:open, ws.url, ws.version, ws.protocol]
ws.onmessage = lambda do |event|
ws.send(event.data)
end
ws.onclose = lambda do |event|
p [:close, event.code, event.reason]
ws = nil
end
ws.rack_response
elsif Faye::EventSource.eventsource?(env)
es = Faye::EventSource.new(env)
time = es.last_event_id.to_i
p [:open, es.url, es.last_event_id]
loop = EM.add_periodic_timer(2) do
time += 1
es.send("Time: #{time}")
EM.add_timer(1) do
es.send('Update!!', :event => 'update', :id => time) if es
end
end
es.send("Welcome!\n\nThis is an EventSource server.")
es.onclose = lambda do |event|
EM.cancel_timer(loop)
p [:close, es.url]
es = nil
end
es.rack_response
else
static.call(env)
end
end
def App.log(message)
end
该应用程序确实运行,但是条件:
App = lambda do |env|
没有被满足,也没有迭代。这个文件应该由外部源运行吗?缺少文件?
这是通过命令运行文件:
ruby app.rb