tornado

问题 I'm trying to use @tornado.web.stream_request_body for upload files. But I have a problem with upload large files. For example, when I upload PDF file larger than 100 MB (https://yadi.sk/i/rzLQ96pk3Tcef6) it loads incorrectly and it doesn't open in viewers. Code example: MAX_STREAMED_SIZE = 1024 * 1024 * 1024 @tornado.web.stream_request_body class UploadHandler(tornado.web.RequestHandler): def prepare(self): self.request.connection.set_max_body_size(MAX_STREAMED_SIZE) self.f = open(os.path

问题 Every request to a handler in my tornado app need to check and validate a key before it processes the request. How could I create a middleware class in Tornado which would check and validate the key before if processes the request? My middleware class function would look something like this. class Checker(object): def process_request(self, request): try: key = request.META['HTTP_X_KEY'] except KeyError: key = None if key and key == os.environ.get('KEY'): #Process the request return None

问题 I am in a weird situation where I have to use Twisted in a system built completely out of Tornado. They can share the same IOLoop so I know they can work together. My question is can I safely use their co-routine decorators in the same function? For example: import tornado.platform.twisted tornado.platform.twisted.install() ... @gen.engine @defer.inlineCallbacks def get(self): ... a = yield gen.Task(getA) # tornado b = yield proxy.callRemote(getB) # twisted ... defer.returnValue(a + b) #

问题 How could I set a break point in my tornado app? I tried pdb, but Tornado app seams to be ignoring my pdb.set_trace() command in my app. 回答1: Where did you put pdb.set_trace() ...? This works for me: #!/usr/bin/python # -*- coding: utf-8 -*- import tornado.httpserver import tornado.ioloop import tornado.options import tornado.web import pdb from tornado.options import define, options define("port", default=8000, help="run on the given port", type=int) class IndexHandler(tornado.web

问题 I am trying to access Google's APIs with OAuth 1.0 and 2.0 in both cases I need to fill Authorization field in the headers with value 'OAuth' followed by access token. I tried following method, but Google throws me an error saying there is problem in Authorization header values. I am using Python-Tornado additional_headers = { "Authorization": "OAuth "+GoogleOAuth2Mixin.access_token, "Accept-Encoding": None } h = httputil.HTTPHeaders() h.parse_line("Authorization: OAuth "+GoogleOAuth2Mixin

问题 I'm trying to run multiple process in Tornado and I tried the suggestions made on this thread : run multiple tornado processess But the error hasn't gone for me. This is the server file. server.py import os import sys import tornado #import pymongo from tornado import ioloop, web, httpserver, websocket from tornado.options import options #Loading default setting files import settings #Motorengine - ODM for mongodb #from motorengine import connect app = tornado.web.Application(handlers=[ (r'/'

问题 I am using some comet techniques including long polling and forever frame. I am using iframes for cross subdomain stuff. The one issue that I ran into while implementing these techniques is when a user refreshes a page or navigates to another page causing a new request, the comet connection is kept open from the old page. My server (tornado) never receives a connection close and from my limited wireshark abilities I don't see any TCP fin packet sent. However, when I close the the browser, the

问题 What would be an alternative for SignalR in Python world? To be precise, I am using tornado with python 2.7.6 on Windows 8; and I found sockjs-tornado (Python noob; sorry for any inconveniences). But sockjs supports just 3 types of events and there are some limitations; I need things like groups, subscribers, propagating and other features that SignalR provides. 回答1: You are probably looking for Twisted, a whole real-time engine for applications. https://twistedmatrix.com/trac/ If you do

问题 I have to use Tornadoweb as RESTfull backend for our existing AngularJs application. The {{}} are heavily used in the angular app. I would like to serve angular files from tornado as static files Is there a way to disable processing templates by tornado to avoid conflicts with {{}} used by tornado? I know how to change the {{}} in the angular app with $interpolateProvider but it will involve a lot of changes in the angular app. As a temporary solution, I put the angular app in the static

问题 When to use RequestHandler.get_argument() , RequestHandler.get_query_argument() and RequestHandler.get_body_argument() ? What is the use-case for each of them? Also what does the request.body and request.argument do in these cases? Which are to be used in which scenarios? And, is there a request.query or something similar too? 回答1: Most HTTP requests store extra parameters (say, form values) in one of two places: the URL (in the form of a ?foo=bar&spam=eggs query string), or in the request