Added ajax long polling.

app/controllers/long_polling_controller.rb

@@ -0,0 +1,91 @@
+class LongPollingController < ApplicationController
+
+  # GET /api/message_send
+  def message_send
+    new_connection = false
+
+    # check client id
+    client_id = client_id_check
+    if !client_id
+      new_connection = true
+      client_id = client_id_gen
+      puts 'NEW CLIENT CONNECTION: ' + client_id.to_s
+    else
+      # cerify client id
+      if !client_id_verify
+        render :json => { :error => 'Invalid client_id in send!' }, :status => :unprocessable_entity
+        return
+      end
+    end
+    if !params['data']
+      params['data'] = {}
+    end
+
+    # receive message
+    if params['data']['action'] == 'login'
+      user_id = session[:user_id]
+      user = {}
+      if user_id
+        user = User.user_data_full( user_id )
+      end
+      Session.create( client_id, user, { :type => 'ajax' } )
+    end
+
+    if new_connection
+      result = { :client_id => client_id }
+      render :json => result
+    else
+      render :json => {}
+    end
+  end
+
+  # GET /api/message_receive
+  def message_receive
+
+    # check client id
+    if !client_id_verify
+      render :json => { :error => 'Invalid client_id receive!' }, :status => :unprocessable_entity
+      return
+    end
+
+    # check queue queue to send
+    client_id = client_id_check
+    begin
+      count = 60
+      while true
+        count = count - 1
+        queue = Session.queue( client_id )
+        if queue && queue[0]
+  #        puts "send " + queue.inspect + client_id.to_s
+          render :json => queue
+          return
+        end
+        sleep 2
+        if count == 0
+          render :json => { :action => 'pong' }
+          return
+        end
+      end
+    rescue
+      render :json => { :error => 'Invalid client_id in receive loop!' }, :status => :unprocessable_entity
+      return
+    end
+  end
+
+  private
+    def client_id_check
+      return params[:client_id] if params[:client_id]
+      return
+    end
+    def client_id_gen
+      rand(99999999)
+    end
+    def client_id_verify
+      return if !params[:client_id]
+      sessions = Session.sessions
+      return if !sessions.include?( params[:client_id].to_s )
+#    Session.update( client_id )
+#      Session.touch( params[:client_id] )
+      return true
+    end
+end

config/routes/message.rb

@@ -0,0 +1,10 @@
+module ExtraRoutes
+  def add(map)
+
+    # messages
+    map.match '/api/message_send',                :to => 'long_polling#message_send'
+    map.match '/api/message_receive',             :to => 'long_polling#message_receive'
+
+  end
+  module_function :add
+end