I am developing a RESTFUL webservice using Django. On some occassion, we need to push the server object to the connected client without client polling. We decided to use django-websocket 0.3.0.
I am writing the test cases and tried to connect to the server using nodejs ws client module
My View Function in Django is following:
from django.http import HttpResponse
from django_websocket import accept_websocket, require_websocket
from django.views.decorators.csrf import csrf_exempt
import json, sys, os, time, datetime
@csrf_exempt
@accept_websocket
def home(request) :
if not request.is_websocket():
return HttpResponse('new message')
else:
for message in request.websocket:
message = modify_message(message)
request.websocket.send(message)
request.websocket.close()
My Client Side code in js is like this:-
//Normal Get
var request = require('request');
request('http://127.0.0.1:8000',function(err,resp,flag){
console.log(resp.body);
});
//Opening a websocket
var WebSocket = require('ws');
var ws = new WebSocket('ws://127.0.0.1:8000/', {origin: 'http://127.0.0.1:8000'});
ws.on('open', function() {
console.log('connected');
ws.send(Date.now().toString(), {mask: true});
});
ws.on('close', function() {
console.log('disconnected');
});
ws.on('message', function(data, flags) {
console.log('Roundtrip time: ' + (Date.now() - parseInt(data)) + 'ms', flags);
setTimeout(function() {
ws.send(Date.now().toString(), {mask: true});
}, 500);
});
The first option gets the message as 'new message' On the other side the second call throws the following error on the client side. On the server side, both commands pass through a 200OK
events.js:72
throw er; // Unhandled 'error' event
^
Error: unexpected server response (200)
at ClientRequest.<anonymous> (../ws/lib/WebSocket.js:603:17)
at ClientRequest.g (events.js:175:14)
at ClientRequest.EventEmitter.emit (events.js:95:17)
at HTTPParser.parserOnIncomingClient [as onIncoming] (http.js:1689:21)
at HTTPParser.parserOnHeadersComplete [as onHeadersComplete] (http.js:120:23)
at Socket.socketOnData [as ondata] (http.js:1584:20)
at TCP.onread (net.js:525:27)
On a side note if I log the request.is_websocket() on both calls it returns false meaning on the server side it never goes into the else part.
Please help me understand what mistake I am doing here
Thank you
