I’ve been testing using various locations, and I’ve noticed that when I use “Taiwan - GCE” instance (any browser - Chrome, Firefox, Opera), sometimes it results in 503 response.
It is happening for any resource on Dailymotion.com domain (the example is a static JSON file to make things less complicated).
- (HTTP request) https://www.webpagetest.org/result/180725_GW_6b3d7a1f82ce8f8d4c9b32a6c7df8f30/
- (HTTPS request) https://www.webpagetest.org/result/180726_25_2550ce5437534804ff650420da260523/
My question is, how can I be sure the issue is not on WPT Taiwan instance, but on DM server side?
I asked my infra team and they say they don’t see any 503s in the graphs/logs.
Can those 503s come from WPT itself? If so, what could be the reasons?
Does WPT do Man-in-the-Middle and other things like that?
Thanks in advance for any suggestions.