用于 websocket-rails gem 的 Ruby websocket 客户端
我正在开发一个需要使用 websocket 功能与外部 ruby 客户端通信的 rails 网页.为了做到这一点,我在 rails 服务器中使用了 websocket-rails gem,定义了 client_connected client_disconnected 事件和从客户端接收消息的特定操作 (new_message).
I am developing a rails webpage which need to use websocket functionality to communicate with an external ruby client. In order to do this, I am using the websocket-rails gem in the rails server, definning the client_connected client_disconnected event and a specific action to received the messages from the client (new_message).
在客户端,我尝试使用不同的 ruby gems,例如 faye-websocket-ruby 和 websocket-client-simple,但我总是在尝试时遇到错误发送信息.在服务器上,我找不到处理这些消息的方法.两个 gem 都有一个发送方法,只接受一个字符串(不能指定事件的名称)
On the client side I have tried to use different ruby gems like faye-websocket-ruby and websocket-client-simple but I always obtain errors when I try to send a message. On the server I can't find the way to process these messages. Both gems has a send method with only accepts a string (not being able to specify the name of the event)
我一直在使用的代码如下:
The code that I have been using is the following:
服务器端
app/controllers/chat_controller.rb
class ChatController < WebsocketRails::BaseController
def new_message
puts ')'*40
end
def client_connected
puts '-'*40
end
def client_disconnected
puts '&'*40
end
end
config/events.rb
WebsocketRails::EventMap.describe do
subscribe :client_connected, :to => ChatController, :with_method => :client_connected
subscribe :message, :to => ChatController, :with_method => :new_message
subscribe :client_disconnected, :to => ChatController, :with_method => :client_disconnected
end
config/initializers/websocket_rails.rb
WebsocketRails.setup do |config|
config.log_path = "#{Rails.root}/log/websocket_rails.log"
config.log_internal_events = true
config.synchronize = false
end
客户端
websocket-client-simple
require 'rubygems'
require 'websocket-client-simple'
ws = WebSocket::Client::Simple.connect 'ws://localhost:3000/websocket'
ws.on :message do |msg|
puts msg.data
end
ws.on :new_message do
hash = { channel: 'example' }
ws.send hash
end
ws.on :close do |e|
p e
exit 1
end
ws.on :error do |e|
p e
end
hash = { channel: 'Example', message: 'Example' }
ws.send 'new_message', hash
loop do
ws.send STDIN.gets.strip
end
faye-websocket
require 'faye/websocket'
require 'eventmachine'
EM.run {
ws = Faye::WebSocket::Client.new('ws://localhost:3000/websocket')
ws.on :open do |event|
p [:open]
end
ws.on :message do |event|
p [:message, event.data]
end
ws.on :close do |event|
p [:close, event.code, event.reason]
ws = nil
end
ws.send( 'Example Text' )
}
提前致谢.问候.
PD:如果您需要更多代码,请告诉我.
PD: Let me know if you need more code.
我终于找到了解决方案.问题是消息需要使用特定格式构建才能被websocket理解-导轨.
Finally I have found the solution. The problem was that the message needs to be constructed with a certain format in order to be understood by websocket-rails.
示例:ws.send('["new_message",{"data":"示例消息"}]')
其中 new_message 是 websocket-rails 正在侦听的事件.
where new_message is the event which websocket-rails is listening to.