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305 Use Proxy
| Posted by HostSentry, 11-15-2011, 02:06 AM |
| I'm interested in researching the HTTP Response Header "305 Use Proxy". I can almost find no documentation as to how it is actually implemented (if at all), in modern browsers.
I'm relatively particular as to how it should be implemented by a browser, but I'm uncertain as to how it is actually implemented.
Is it effectively ignored?
My hope is that it can be used to indicate an alternate HTTP server to satisfy the request, without alerting the user of the browser.
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| Posted by Grumps, 11-15-2011, 03:49 AM |
| 305 is used and it's not ignored by the browser (where did you get this idea?)
A 305 header is much like the 302 header in that the other url is followed by it.
The two are kind of the same, they even have same syntax, but 305 is not a redirect. The difference is really just semantics.
Usage is when:
client wants x.
client requests x from origin server
origin server says get your x from that dude over there instead, I don't like dealing with menial tasks.
the dude on the corner says here's ur file. But don't come to me directly, because I might be fired tomorrow.
Some more explanations
http://www.checkupdown.com/status/E305.html
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| Posted by HostSentry, 11-15-2011, 04:20 AM |
| Do you have an example of a modern browser (ie: firefox 7) following the description you've provided?
I've read the page you linked before I made this topic, but I believe that is an explanation as to how the checkupdown client handles the response header.
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| Posted by Grumps, 11-18-2011, 03:12 AM |
| I'm not sure what kind of example you are seeking...
It's admittedly not that common. So, I can't give you a link that'll definitely give you a 305.
But as I was messing with custom web server (ie, like apache) some time ago, I did test various http response codes. I haven't noticed any browsers misbehaving towards 305 (ie, behaves like 302) -- but it was a test geared to see the functionality of the server, not the browser.
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