Random failures from Taiwan WPT instance
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07-27-2018, 07:59 PM
(This post was last modified: 07-27-2018 08:04 PM by jakub.)
Post: #4
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RE: Random failures from Taiwan WPT instance
Hi Patrick, thanks for you input and the pcap suggestion!
Some things I forgot to mention / did not emphasise enough: - the issues happen both for static and dynamic resources, I just used a static JSON URL for simplicity - the IP from the WPT logs is 195.8.215.136 which is the expected IP for the domain, resolved in the same way from everywhere (it's not geodistributed / not a CDN) - the issue happens both for http and https requests with equal chance - so far I only reproduced on WPT Taiwan instance, not others (that's a bit weird honestly) My reasoning is: since the IP matches, and issue happens for HTTPS request, and there's no MitM etc. (hence the integrity is guaranteed, no third-party proxies messing with the output), the problem indeed must be on the server side (maybe some anti-bot solution as you mentioned). This is an interesting run where the initial http request is fine (redirects to https) but https gets 503 response: https://www.webpagetest.org/result/18072...1_request2 pcap is here: https://www.webpagetest.org/getgzip.php?...file=2.cap I checked the PCAP for the https request and it looks like it contains the proper cert etc. I will check with the devops again. Thanks! |
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Messages In This Thread |
Random failures from Taiwan WPT instance - jakub - 07-26-2018, 06:47 PM
RE: Random failures from Taiwan WPT instance - pmeenan - 07-26-2018, 11:56 PM
RE: Random failures from Taiwan WPT instance - pmeenan - 07-26-2018, 11:58 PM
RE: Random failures from Taiwan WPT instance - jakub - 07-27-2018 07:59 PM
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