Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #81779 > unrolled thread

Re: Cherrypy - prevent browser "prefetch"?

Back to article view | Back to comp.lang.python

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: Cherrypy - prevent browser "prefetch"? Ned Batchelder <ned@nedbatchelder.com> - 2014-12-01 16:50 -0500

#81779 — Re: Cherrypy - prevent browser "prefetch"?

On 12/1/14 4:26 PM, Tim Chase wrote:
> On 2014-12-01 11:28, Israel Brewster wrote:
>> I don't know if this is a cherrypy specific question (although it
>> will be implemented in cherrypy for sure), or more of a general
>> http protocol question, but when using cherrypy to serve a web app,
>> is there anyway to prevent browser prefetch? I'm running to a
>> problem, specifically from Safari on the Mac, where I start to type
>> a URL, and Safari auto-fills the rest of a random URL matching what
>> I started to type, and simultaneously sends a request for that URL
>> to my server, occasionally causing unwanted effects.
>
> All this to also say that performing non-idempotent actions on a GET
> request is just begging for trouble. ;-)
>

This is the key point: your web application shouldn't be doing these 
kinds of actions in response to a GET request.  Make them POST requests, 
and Safari won't give you any trouble.

Trying to stop Safari from making the GET requests might work for 
Safari, but then you will find another browser, or a proxy server, or an 
edge-caching accelerator, etc, that makes the GET requests when you 
don't want them.

The way to indicate to a browser that it shouldn't pre-fetch a URL is to 
make it a POST request.

-- 
Ned Batchelder, http://nedbatchelder.com

[toc] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web