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sockjs-tornado with tornado.gen interface.
# -*- coding: utf-8 -*-
from tornado import ioloop, web, gen, httpclient
from sockjs.tornado import SockJSConnection, SockJSRouter
class IndexHandler(web.RequestHandler):
"""Regular HTTP handler to serve the ping page"""
def get(self):
self.render('index.html')
# Out broadcast connection
class GrabConnection(SockJSConnection):
def on_message(self, msg):
print '1 - Making request'
self.handle_request(msg)
print '2 - Returned from on_message'
@gen.engine
def handle_request(self, url):
client = httpclient.AsyncHTTPClient()
response = yield gen.Task(client.fetch, url)
self.send(repr(response.headers))
print '3 - Sent data to client'
GrabRouter = SockJSRouter(GrabConnection, '/grab')
if __name__ == "__main__":
import logging
logging.getLogger().setLevel(logging.DEBUG)
# Create application
app = web.Application(
[(r"/", IndexHandler)] +
GrabRouter.urls
)
app.listen(8080)
print 'Listening on 0.0.0.0:8080'
ioloop.IOLoop.instance().start()
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script src="http://cdn.sockjs.org/sockjs-0.3.min.js"></script>
<script>
$(function() {
var conn = new SockJS('http://localhost:8080/grab');
conn.onmessage = function(e) {
$('<div/>').text(e.data).appendTo($('#msg'));
$('#msg').append('<hr/>');
}
$('#grab').click(function() {
conn.send('http://www.google.com/');
return false;
});
});
</script>
</head>
<body>
<h3>Grab it!</h3>
<div id="msg"></div>
</body>
<a id="grab" href="#">Grab!</a>
</html>
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