how to send json header in websocket tornado python?

Question

 def on_message(self, message):

     for client in ChatWebSocket.clients:
         print(client)
         t=json.loads(message)
         client.write_message(json.dumps('Content-type:application/json\n')) 
         client.write_message(json.dumps({'a':t['b']}))
         print(t['b'])

the problem is client is accepting it like a normal string and not a header please help

eepp · Accepted Answer · 2013-06-13 14:56:49Z

4

From Tornado's documentation:

WebSocketHandler.write_message(message, binary=False)

Sends the given message to the client of this Web Socket.

The message may be either a string or a dict (which will be encoded as json). If the binary argument is false, the message will be sent as utf8; in binary mode any byte string is allowed.

So you don't need to dump anything. Just send the dict as is and Tornado will encode it as JSON anyways: false, the message will be sent as utf8; in binary mode any byte string is allowed.

So you don't need to dump anything. Just send the dict as is and Tornado will

def on_message(self, message):
  for client in ChatWebSocket.clients:
    print(client)
    t = json.loads(message)
    client.write_message({'a': t['b']})
    print(t['b'])

answered Jun 13, 2013 at 14:56

eepp

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