Data Streams over WebSockets and HTTP Long Polling Protocols

1.json

{
  "time": "2:07:04pm",
  "price": "510.83",
  "delta": "69.02",
  "perc": "13.51",
  "vol": 2930
}

{
  "time": "2:07:06pm",
  "price": "512.29",
  "delta": "70.48",
  "perc": "13.76",
  "vol": 5120
}

10.ru

$ gem install pubnub

11.ru

require 'pubnub'

my_logger = Logger.new(STDOUT)

pubnub = Pubnub.new(
    subscribe_key: "demo",
    error_callback: lambda { |msg|
      puts "Error callback says: #{msg.inspect}"
    },
    logger: my_logger
)

options = {
    channel: "hello_world",
    http_sync: true
}

pubnub.subscribe(options) { |data| puts data.msg }

12.py

$ pip install pubnub==3.5.2

13.py

import pubnub

pubnub = Pubnub(subscribe_key="demo", ssl_on=False)

def pn_received(message):
    print(message)
    return True

pubnub.subscribe_sync(channel='hello_world', callback=pn_received)

2.js

<script src="//cdn.pubnub.com/pubnub.min.js"></script>

3.js

<script>
 (function(){
     var pubnub = PUBNUB.init({
         publish_key   : 'demo',
         error: function(e) {
             console.log(e);
         }
     });

     // The message you want to sent can be anything
     // Examples include strings, numbers, arrays, or JavaScript Objects, etc.
     // JavaScript Objects are automatically converted to JSON strings by the SDK
     pubnub.publish({
         channel : "hello_world",
         message : "Hi, from JavaScript"
     });         
})();
</script>

4.ru

$ gem install pubnub

5.ru

require 'pubnub'

my_logger = Logger.new(STDOUT)

pubnub = Pubnub.new(
    publish_key: "demo",
    error_callback: lambda { |msg|
      puts "Error callback says: #{msg.inspect}"
    },
    logger: my_logger
)

options = {
    message: "Hi, from Ruby", 
    channel: "hello_world",
    http_sync: true
}

pubnub.publish(options) do |envelope|
    puts envelope.inspect
end

6.py

$ pip install pubnub==3.5.2

7.py

import pubnub

pubnub = Pubnub(publish_key="demo", ssl_on=False)

def pn_error(message): 
    print ("ERROR: " + str(message))

print pubnub.publish(channel='hello_world', message='Hi, from Python', error=pn_error)

8.js

<script src="//cdn.pubnub.com/pubnub.min.js"></script>

9.js

<script>
 (function(){
     var pubnub = PUBNUB.init({
         subscribe_key   : 'demo',
         error: function(e) {
             console.log(e);
         }
     });

     // Messages received on the specified channel will be sent to the message callback function
     // JSON strings are automatically converted to JavaScript Objects by the SDK
     pubnub.subscribe({
         channel : "hello_world",
         message : function(msg) {  
             console.log(msg);
         }
     });         
})();
</script>