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Opera 10 has a nice turbo mode where all requests are re-routed to Opera's servers ( global-turbo-x.opera-mini.net ) where the pages are compressed and sent back to the client browser. Consequently all requests to a site arise from that server instead of the actual server.

Yesterday I was unable to access SO[FU] from Opera. Initially I thought SO[FU] was down, but when I checked from my iPhone, the sites were accessible. I tried again in Opera, this time with "Turbo" mode Off, and yep I was able to access. Turn it on, and SO[FU] just refuses connections.

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4  
Do you really need Turbo mode? –  random Jan 22 '10 at 5:55
    
Yes. The place I'm at has a 2.5GB BW Cap. For a month. –  Sathya Jan 22 '10 at 6:14
4  
That's quite a lot for a cap. You must be outside of Australia. –  random Jan 22 '10 at 6:19
    
@Random I'm from India. Currently at my folks' place, where they have this connection as their usage isn't much. Of course when I'm here the bill hikes up –  Sathya Jan 22 '10 at 6:33
    
I use SO with Opera Mini all the time - no problems. I don't see how you can be so sure Opera is NOT to blame. –  uɐɯsO uɐɥʇɐN Jan 22 '10 at 7:22
    
I have 2 Windows, one with Turbo, other without. Without turbo - it opens. With turbo - above message. –  Sathya Jan 22 '10 at 8:16
10  
Are you playing Gnometris and Freecell at the same time? –  Felix Jan 22 '10 at 10:15
8  
Way to go Opera for trying to revive that "TURBO" button I had on the front my my 33mhz 386. –  snicker Jan 22 '10 at 18:03
1  
@snicker ahahaha I hear ya! –  Sathya Jan 22 '10 at 18:07

1 Answer 1

up vote 18 down vote accepted

The value of this should be fairly limited, since

  • we are pretty aggressive about making sure all our HTTP requests come back compressed

  • the site itself has almost no images

  • we don't host images here in posts (all external image hosts)

  • we run pngout on all our .png images so they're as small as they can be

(now, there are exceptions around stuff that IIS7 has cached, like RSS feeds, which we haven't quite figured out. But in typical use of the site, 95% of your requests should be compressed. Verify in the sniffer if you like.. we have!)

edit: it looks like opera's "Turbo Mode" proxies are intentionally retrieving pages uncompressed and getting banned for anomalous bandwidth use per day. That's ... ironic.

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1  
Oh Opera, what are you doing? –  random Jan 22 '10 at 9:14
4  
that's so Opera! en.wikipedia.org/wiki/That%27s_So_Raven –  Jeff Atwood Jan 22 '10 at 9:20
    
it looks like opera's "Turbo Mode" proxies are intentionally retrieving pages uncompressed Oh dear. –  Sathya Jan 22 '10 at 17:21
    
Opera, my dear, I do say... fail. –  snicker Jan 22 '10 at 18:02
2  
I just did a quick test with Opera Mini 4.2, 5.0, and Opera 10.50 with Turbo. Both of the Mini browsers requested compression while the desktop did not. Maybe Mini could be unblocked? –  Josh Lee Mar 12 '10 at 21:54

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