Vinny Unfortunately python urlfetch does not have any cache bypass options that I can see. I tried fetching from a different name for the same server, and that didn't work. The server doesn't have anything funny in front of it....
I have worked around it now by creating a specific ipv6 only name for my server, and now appengine can reach it. I also wrote another endpoint in my app that does a fetch call to any site, and it appears that I can get to any site apart from my server. This seems very weird indeed. After some more investigation, I can see the inbound SYN from appengine and the responding SYN-ACK, but never the next packet from appengine. This feels like some sort of ip routing problem.... Philip On Friday, November 1, 2013 11:49:55 PM UTC-4, Vinny P wrote: > > On Fri, Nov 1, 2013 at 4:15 PM, <philip.g...@gmail.com <javascript:>> > wrote: > >> I seem to recall that there is a proxy between appengine instances and >> the internet, and I'm wondering if this has problems. >> >> > > There is a caching layer, but it usually doesn't cause this type of > problem. It's worth ruling it out though. > > You can force urlfetches to avoid pulling from cache by setting the > appropriate fetch settings. This varies by language; for instance in Java > you can call URLConnection.setDefaultUseCaches and > URLConnection.setUseCaches to false. > > > On Fri, Nov 1, 2013 at 4:15 PM, <philip.g...@gmail.com <javascript:>> > wrote: > >> This is always trying to fetch data from my server. >> > > > Does your other server have any CDNs or proxies in front of it? They may > be dropping the incoming connections. > > > ----------------- > -Vinny P > Technology & Media Advisor > Chicago, IL > > App Engine Code Samples: http://www.learntogoogleit.com > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine. For more options, visit https://groups.google.com/groups/opt_out.
