Maybe, but I don't use their proxies, I've overriden them for speed. Phil Bedard <[email protected]> wrote: >On 11/16/13, 7:36 PM, "Jay Ashworth" <[email protected]> wrote: > > >>> Second, a list of CDN nodes is likely impossible to gather & >maintain >>> without the help of the CDNs themselves. There are literally >thousands >>> of them, most do not serve the entire Internet, and they change >>> frequently. And before you ask, I know at least Akamai will _not_ >give >>> you their list, so don't even try to ask them. >> >>I find myself unsurprised. >> >>I was led to a very interesting failure case involving CDN's a couple >>weeks >>ago, that I thought you might find amusing. >> >>I have a Samsung Galaxy S4, with Sprint. On a semi-regular basis, the >>networking gets flaky around 1-2am ish local time, but 3 weekends ago, >>the symptom I saw was DNS lookups failed -- and it wasn't clear to me >>whether it was "just some lookups failed", or that Big Sites were >cached >>at the provider, and *all* outgoing 53 traffic to the greater internet >>wasn't being forwarded by Sprint's customer resolvers. >> >>I know that it was their resolvers, though, as I grabbed a copy of Set >>DNS, >>and pointed my phone to 8.8.8.8, and 4.2.2.1, and OpenDNS, and like >that, >>and everything worked ok. >> >>Except media. >> >>(Patrick is starting to nod and chuckle, now :-) >> >>Both YouTube and The Daily Show's apps worked ok, but refused to play >>video clips for me. If I reset the DNS to normal, I went back to "not >>all sites are reachable, but media plays fine". >> >>My diagnosis was that those sites were CDNed, and the DNS names to >*which* >>they were CDNs were only visible inside Sprint's event horizon, so >when I >>was on alternate DNS resolution, I couldn't get to them. >> >>But that took me over a day to figure out. Don't get old. :-) >> >>Patrick? Is that how (at least some) customers do it? > > >It seems more likely the Sprint resolvers you were using were having >difficulty reaching external authoratative servers but the devices they >proxy all the media content through wasn't... All major media content >these days is CDN'd but I don't think that had anything to do with it. > >Phil
-- Sent from my Android phone with K-9 Mail. Please excuse my brevity.
